./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-binfmt_misc.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh --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 2c6afaf5bedcc2af934f5b2a4cc6fb91099717aaf97d30d9787d5c01855a1a43 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 06:09:23,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:09:23,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:09:23,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:09:23,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:09:23,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:09:23,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:09:23,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:09:23,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:09:23,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:09:23,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:09:23,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:09:23,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:09:23,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:09:23,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:09:23,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:09:23,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:09:23,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:09:23,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:09:23,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:09:23,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:09:23,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:09:23,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:09:23,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:09:23,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:09:23,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:09:23,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:09:23,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:09:23,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:09:23,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:09:23,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:09:23,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:09:23,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:09:23,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:09:23,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:09:23,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:09:23,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:09:23,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:09:23,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:09:23,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:09:23,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:09:23,525 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 06:09:23,539 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:09:23,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:09:23,540 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:09:23,540 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:09:23,540 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:09:23,541 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:09:23,541 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:09:23,541 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:09:23,541 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:09:23,541 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:09:23,541 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:09:23,541 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:09:23,541 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:09:23,541 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:09:23,542 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:09:23,542 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:09:23,542 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:09:23,542 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:09:23,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:09:23,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:09:23,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:09:23,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:09:23,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:09:23,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:09:23,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:09:23,543 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:09:23,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:09:23,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:09:23,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:09:23,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:09:23,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:09:23,544 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:09:23,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:09:23,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:09:23,544 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:09:23,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:09:23,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:09:23,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:09:23,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c6afaf5bedcc2af934f5b2a4cc6fb91099717aaf97d30d9787d5c01855a1a43 [2022-12-14 06:09:23,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:09:23,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:09:23,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:09:23,726 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:09:23,727 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:09:23,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i [2022-12-14 06:09:26,301 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:09:26,619 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:09:26,620 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i [2022-12-14 06:09:26,654 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/data/8f6f9ce31/fd05e6c2114a495ebdda613c062cc908/FLAG3f5975d48 [2022-12-14 06:09:26,667 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/data/8f6f9ce31/fd05e6c2114a495ebdda613c062cc908 [2022-12-14 06:09:26,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:09:26,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:09:26,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:09:26,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:09:26,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:09:26,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:09:26" (1/1) ... [2022-12-14 06:09:26,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a86abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:09:26, skipping insertion in model container [2022-12-14 06:09:26,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:09:26" (1/1) ... [2022-12-14 06:09:26,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:09:26,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:09:27,049 WARN L623 FunctionHandler]: Unknown extern function __list_add [2022-12-14 06:09:27,060 WARN L623 FunctionHandler]: Unknown extern function __list_del_entry [2022-12-14 06:09:27,170 WARN L623 FunctionHandler]: Unknown extern function lockref_get [2022-12-14 06:09:27,277 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 06:09:27,278 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 06:09:27,279 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 06:09:27,279 WARN L623 FunctionHandler]: Unknown extern function __copy_from_user_overflow [2022-12-14 06:09:27,285 WARN L623 FunctionHandler]: Unknown extern function __register_binfmt [2022-12-14 06:09:27,313 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,322 WARN L623 FunctionHandler]: Unknown extern function string_unescape [2022-12-14 06:09:27,345 WARN L623 FunctionHandler]: Unknown extern function strrchr [2022-12-14 06:09:27,355 WARN L623 FunctionHandler]: Unknown extern function _raw_read_lock [2022-12-14 06:09:27,356 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 06:09:27,357 WARN L623 FunctionHandler]: Unknown extern function _raw_read_unlock [2022-12-14 06:09:27,357 WARN L623 FunctionHandler]: Unknown extern function remove_arg_zero [2022-12-14 06:09:27,358 WARN L623 FunctionHandler]: Unknown extern function get_unused_fd_flags [2022-12-14 06:09:27,358 WARN L623 FunctionHandler]: Unknown extern function fd_install [2022-12-14 06:09:27,359 WARN L623 FunctionHandler]: Unknown extern function would_dump [2022-12-14 06:09:27,360 WARN L623 FunctionHandler]: Unknown extern function fput [2022-12-14 06:09:27,360 WARN L623 FunctionHandler]: Unknown extern function copy_strings_kernel [2022-12-14 06:09:27,361 WARN L623 FunctionHandler]: Unknown extern function copy_strings_kernel [2022-12-14 06:09:27,362 WARN L623 FunctionHandler]: Unknown extern function bprm_change_interp [2022-12-14 06:09:27,362 WARN L623 FunctionHandler]: Unknown extern function open_exec [2022-12-14 06:09:27,363 WARN L623 FunctionHandler]: Unknown extern function kernel_read [2022-12-14 06:09:27,364 WARN L623 FunctionHandler]: Unknown extern function prepare_binprm [2022-12-14 06:09:27,364 WARN L623 FunctionHandler]: Unknown extern function search_binary_handler [2022-12-14 06:09:27,365 WARN L623 FunctionHandler]: Unknown extern function sys_close [2022-12-14 06:09:27,387 WARN L623 FunctionHandler]: Unknown extern function simple_strtoul [2022-12-14 06:09:27,394 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 06:09:27,395 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 06:09:27,405 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:09:27,406 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:09:27,421 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:09:27,421 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:09:27,422 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:09:27,423 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:09:27,424 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:09:27,429 WARN L623 FunctionHandler]: Unknown extern function new_inode [2022-12-14 06:09:27,429 WARN L623 FunctionHandler]: Unknown extern function get_next_ino [2022-12-14 06:09:27,430 WARN L623 FunctionHandler]: Unknown extern function current_fs_time [2022-12-14 06:09:27,433 WARN L623 FunctionHandler]: Unknown extern function clear_inode [2022-12-14 06:09:27,433 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 06:09:27,436 WARN L623 FunctionHandler]: Unknown extern function _raw_write_lock [2022-12-14 06:09:27,437 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 06:09:27,437 WARN L623 FunctionHandler]: Unknown extern function drop_nlink [2022-12-14 06:09:27,438 WARN L623 FunctionHandler]: Unknown extern function d_drop [2022-12-14 06:09:27,446 WARN L623 FunctionHandler]: Unknown extern function dput [2022-12-14 06:09:27,446 WARN L623 FunctionHandler]: Unknown extern function simple_release_fs [2022-12-14 06:09:27,450 WARN L623 FunctionHandler]: Unknown extern function __get_free_pages [2022-12-14 06:09:27,451 WARN L623 FunctionHandler]: Unknown extern function simple_read_from_buffer [2022-12-14 06:09:27,451 WARN L623 FunctionHandler]: Unknown extern function free_pages [2022-12-14 06:09:27,455 WARN L623 FunctionHandler]: Unknown extern function dput [2022-12-14 06:09:27,460 WARN L623 FunctionHandler]: Unknown extern function lookup_one_len [2022-12-14 06:09:27,461 WARN L623 FunctionHandler]: Unknown extern function simple_pin_fs [2022-12-14 06:09:27,462 WARN L623 FunctionHandler]: Unknown extern function iput [2022-12-14 06:09:27,462 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-12-14 06:09:27,463 WARN L623 FunctionHandler]: Unknown extern function _raw_write_lock [2022-12-14 06:09:27,463 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 06:09:27,463 WARN L623 FunctionHandler]: Unknown extern function dput [2022-12-14 06:09:27,464 WARN L623 FunctionHandler]: Unknown extern function dput [2022-12-14 06:09:27,464 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 06:09:27,467 WARN L623 FunctionHandler]: Unknown extern function simple_read_from_buffer [2022-12-14 06:09:27,472 WARN L623 FunctionHandler]: Unknown extern function dput [2022-12-14 06:09:27,477 WARN L623 FunctionHandler]: Unknown extern function simple_fill_super [2022-12-14 06:09:27,480 WARN L623 FunctionHandler]: Unknown extern function mount_single [2022-12-14 06:09:27,488 WARN L623 FunctionHandler]: Unknown extern function unregister_binfmt [2022-12-14 06:09:27,589 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,590 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,590 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,590 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,590 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,591 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,591 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,591 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,592 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,592 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,592 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,592 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,592 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,593 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,593 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,593 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,593 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,594 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,594 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,594 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,594 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,595 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,595 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,595 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,597 WARN L623 FunctionHandler]: Unknown extern function kill_litter_super [2022-12-14 06:09:27,598 WARN L623 FunctionHandler]: Unknown extern function simple_statfs [2022-12-14 06:09:27,616 WARN L623 FunctionHandler]: Unknown extern function default_llseek [2022-12-14 06:09:27,619 WARN L623 FunctionHandler]: Unknown extern function noop_llseek [2022-12-14 06:09:27,620 WARN L623 FunctionHandler]: Unknown extern function default_llseek [2022-12-14 06:09:27,628 WARN L623 FunctionHandler]: Unknown extern function register_filesystem [2022-12-14 06:09:27,629 WARN L623 FunctionHandler]: Unknown extern function unregister_filesystem [2022-12-14 06:09:27,656 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-14 06:09:27,656 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-14 06:09:27,661 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-14 06:09:27,749 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193323,193336] [2022-12-14 06:09:27,752 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193489,193502] [2022-12-14 06:09:27,753 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193653,193666] [2022-12-14 06:09:27,753 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193818,193831] [2022-12-14 06:09:27,761 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,761 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,762 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,762 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:09:27,782 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:09:27,836 WARN L623 FunctionHandler]: Unknown extern function __list_add [2022-12-14 06:09:27,836 WARN L623 FunctionHandler]: Unknown extern function __list_del_entry [2022-12-14 06:09:27,838 WARN L623 FunctionHandler]: Unknown extern function lockref_get [2022-12-14 06:09:27,840 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 06:09:27,841 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 06:09:27,841 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 06:09:27,841 WARN L623 FunctionHandler]: Unknown extern function __copy_from_user_overflow [2022-12-14 06:09:27,841 WARN L623 FunctionHandler]: Unknown extern function __register_binfmt [2022-12-14 06:09:27,842 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,842 WARN L623 FunctionHandler]: Unknown extern function string_unescape [2022-12-14 06:09:27,843 WARN L623 FunctionHandler]: Unknown extern function strrchr [2022-12-14 06:09:27,847 WARN L623 FunctionHandler]: Unknown extern function _raw_read_lock [2022-12-14 06:09:27,847 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 06:09:27,848 WARN L623 FunctionHandler]: Unknown extern function _raw_read_unlock [2022-12-14 06:09:27,848 WARN L623 FunctionHandler]: Unknown extern function remove_arg_zero [2022-12-14 06:09:27,848 WARN L623 FunctionHandler]: Unknown extern function get_unused_fd_flags [2022-12-14 06:09:27,849 WARN L623 FunctionHandler]: Unknown extern function fd_install [2022-12-14 06:09:27,849 WARN L623 FunctionHandler]: Unknown extern function would_dump [2022-12-14 06:09:27,849 WARN L623 FunctionHandler]: Unknown extern function fput [2022-12-14 06:09:27,850 WARN L623 FunctionHandler]: Unknown extern function copy_strings_kernel [2022-12-14 06:09:27,850 WARN L623 FunctionHandler]: Unknown extern function copy_strings_kernel [2022-12-14 06:09:27,850 WARN L623 FunctionHandler]: Unknown extern function bprm_change_interp [2022-12-14 06:09:27,851 WARN L623 FunctionHandler]: Unknown extern function open_exec [2022-12-14 06:09:27,851 WARN L623 FunctionHandler]: Unknown extern function kernel_read [2022-12-14 06:09:27,852 WARN L623 FunctionHandler]: Unknown extern function prepare_binprm [2022-12-14 06:09:27,852 WARN L623 FunctionHandler]: Unknown extern function search_binary_handler [2022-12-14 06:09:27,852 WARN L623 FunctionHandler]: Unknown extern function sys_close [2022-12-14 06:09:27,858 WARN L623 FunctionHandler]: Unknown extern function simple_strtoul [2022-12-14 06:09:27,863 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 06:09:27,863 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 06:09:27,866 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:09:27,867 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:09:27,868 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:09:27,868 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:09:27,869 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:09:27,869 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:09:27,870 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:09:27,871 WARN L623 FunctionHandler]: Unknown extern function new_inode [2022-12-14 06:09:27,871 WARN L623 FunctionHandler]: Unknown extern function get_next_ino [2022-12-14 06:09:27,872 WARN L623 FunctionHandler]: Unknown extern function current_fs_time [2022-12-14 06:09:27,874 WARN L623 FunctionHandler]: Unknown extern function clear_inode [2022-12-14 06:09:27,874 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 06:09:27,874 WARN L623 FunctionHandler]: Unknown extern function _raw_write_lock [2022-12-14 06:09:27,875 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 06:09:27,875 WARN L623 FunctionHandler]: Unknown extern function drop_nlink [2022-12-14 06:09:27,876 WARN L623 FunctionHandler]: Unknown extern function d_drop [2022-12-14 06:09:27,876 WARN L623 FunctionHandler]: Unknown extern function dput [2022-12-14 06:09:27,876 WARN L623 FunctionHandler]: Unknown extern function simple_release_fs [2022-12-14 06:09:27,877 WARN L623 FunctionHandler]: Unknown extern function __get_free_pages [2022-12-14 06:09:27,878 WARN L623 FunctionHandler]: Unknown extern function simple_read_from_buffer [2022-12-14 06:09:27,878 WARN L623 FunctionHandler]: Unknown extern function free_pages [2022-12-14 06:09:27,880 WARN L623 FunctionHandler]: Unknown extern function dput [2022-12-14 06:09:27,882 WARN L623 FunctionHandler]: Unknown extern function lookup_one_len [2022-12-14 06:09:27,883 WARN L623 FunctionHandler]: Unknown extern function simple_pin_fs [2022-12-14 06:09:27,883 WARN L623 FunctionHandler]: Unknown extern function iput [2022-12-14 06:09:27,884 WARN L623 FunctionHandler]: Unknown extern function d_instantiate [2022-12-14 06:09:27,884 WARN L623 FunctionHandler]: Unknown extern function _raw_write_lock [2022-12-14 06:09:27,885 WARN L623 FunctionHandler]: Unknown extern function _raw_write_unlock [2022-12-14 06:09:27,885 WARN L623 FunctionHandler]: Unknown extern function dput [2022-12-14 06:09:27,885 WARN L623 FunctionHandler]: Unknown extern function dput [2022-12-14 06:09:27,886 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 06:09:27,886 WARN L623 FunctionHandler]: Unknown extern function simple_read_from_buffer [2022-12-14 06:09:27,888 WARN L623 FunctionHandler]: Unknown extern function dput [2022-12-14 06:09:27,890 WARN L623 FunctionHandler]: Unknown extern function simple_fill_super [2022-12-14 06:09:27,892 WARN L623 FunctionHandler]: Unknown extern function mount_single [2022-12-14 06:09:27,894 WARN L623 FunctionHandler]: Unknown extern function unregister_binfmt [2022-12-14 06:09:27,897 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,897 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,897 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,897 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,897 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,898 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,898 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,898 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,898 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,899 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,899 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,899 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,899 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,899 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,900 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,900 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,900 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,900 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,900 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,900 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,901 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,901 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,901 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,901 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,902 WARN L623 FunctionHandler]: Unknown extern function kill_litter_super [2022-12-14 06:09:27,902 WARN L623 FunctionHandler]: Unknown extern function simple_statfs [2022-12-14 06:09:27,912 WARN L623 FunctionHandler]: Unknown extern function default_llseek [2022-12-14 06:09:27,913 WARN L623 FunctionHandler]: Unknown extern function noop_llseek [2022-12-14 06:09:27,913 WARN L623 FunctionHandler]: Unknown extern function default_llseek [2022-12-14 06:09:27,918 WARN L623 FunctionHandler]: Unknown extern function register_filesystem [2022-12-14 06:09:27,919 WARN L623 FunctionHandler]: Unknown extern function unregister_filesystem [2022-12-14 06:09:27,922 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-14 06:09:27,922 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-14 06:09:27,922 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-14 06:09:27,930 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193323,193336] [2022-12-14 06:09:27,930 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193489,193502] [2022-12-14 06:09:27,931 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193653,193666] [2022-12-14 06:09:27,931 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193818,193831] [2022-12-14 06:09:27,933 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,933 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,934 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,934 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 06:09:27,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:09:27,969 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:09:27,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:09:27 WrapperNode [2022-12-14 06:09:27,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:09:27,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:09:27,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:09:27,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:09:27,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:09:27" (1/1) ... [2022-12-14 06:09:28,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:09:27" (1/1) ... [2022-12-14 06:09:28,115 INFO L138 Inliner]: procedures = 238, calls = 1015, calls flagged for inlining = 130, calls inlined = 118, statements flattened = 3029 [2022-12-14 06:09:28,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:09:28,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:09:28,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:09:28,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:09:28,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:09:27" (1/1) ... [2022-12-14 06:09:28,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:09:27" (1/1) ... [2022-12-14 06:09:28,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:09:27" (1/1) ... [2022-12-14 06:09:28,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:09:27" (1/1) ... [2022-12-14 06:09:28,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:09:27" (1/1) ... [2022-12-14 06:09:28,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:09:27" (1/1) ... [2022-12-14 06:09:28,222 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:09:27" (1/1) ... [2022-12-14 06:09:28,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:09:27" (1/1) ... [2022-12-14 06:09:28,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:09:28,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:09:28,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:09:28,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:09:28,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:09:27" (1/1) ... [2022-12-14 06:09:28,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:09:28,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:09:28,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:09:28,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:09:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure dput [2022-12-14 06:09:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure dput [2022-12-14 06:09:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-12-14 06:09:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-12-14 06:09:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2022-12-14 06:09:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2022-12-14 06:09:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2022-12-14 06:09:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2022-12-14 06:09:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-14 06:09:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-14 06:09:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure dget [2022-12-14 06:09:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure dget [2022-12-14 06:09:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure copy_strings_kernel [2022-12-14 06:09:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_strings_kernel [2022-12-14 06:09:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure simple_statfs [2022-12-14 06:09:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_statfs [2022-12-14 06:09:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 06:09:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 06:09:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-12-14 06:09:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-12-14 06:09:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:09:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure kill_node [2022-12-14 06:09:28,314 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_node [2022-12-14 06:09:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_i_mutex_of_inode [2022-12-14 06:09:28,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_i_mutex_of_inode [2022-12-14 06:09:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 06:09:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-12-14 06:09:28,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-12-14 06:09:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure allow_write_access [2022-12-14 06:09:28,314 INFO L138 BoogieDeclarations]: Found implementation of procedure allow_write_access [2022-12-14 06:09:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-12-14 06:09:28,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-12-14 06:09:28,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-12-14 06:09:28,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-12-14 06:09:28,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_exit_misc_binfmt_7_2 [2022-12-14 06:09:28,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_exit_misc_binfmt_7_2 [2022-12-14 06:09:28,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:09:28,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 06:09:28,315 INFO L130 BoogieDeclarations]: Found specification of procedure bm_evict_inode [2022-12-14 06:09:28,315 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_evict_inode [2022-12-14 06:09:28,315 INFO L130 BoogieDeclarations]: Found specification of procedure kill_litter_super [2022-12-14 06:09:28,315 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_litter_super [2022-12-14 06:09:28,315 INFO L130 BoogieDeclarations]: Found specification of procedure simple_read_from_buffer [2022-12-14 06:09:28,316 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_read_from_buffer [2022-12-14 06:09:28,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-12-14 06:09:28,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-12-14 06:09:28,316 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-12-14 06:09:28,316 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-12-14 06:09:28,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-12-14 06:09:28,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-12-14 06:09:28,316 INFO L130 BoogieDeclarations]: Found specification of procedure parse_command [2022-12-14 06:09:28,316 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_command [2022-12-14 06:09:28,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 06:09:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-12-14 06:09:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-12-14 06:09:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure bm_register_write [2022-12-14 06:09:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_register_write [2022-12-14 06:09:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure bm_entry_read [2022-12-14 06:09:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_entry_read [2022-12-14 06:09:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-12-14 06:09:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-12-14 06:09:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-12-14 06:09:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-12-14 06:09:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure bm_status_write [2022-12-14 06:09:28,318 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_status_write [2022-12-14 06:09:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-12-14 06:09:28,318 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-12-14 06:09:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-12-14 06:09:28,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-12-14 06:09:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 06:09:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure scanarg [2022-12-14 06:09:28,318 INFO L138 BoogieDeclarations]: Found implementation of procedure scanarg [2022-12-14 06:09:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-14 06:09:28,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-14 06:09:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 06:09:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-12-14 06:09:28,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-12-14 06:09:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-12-14 06:09:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-12-14 06:09:28,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-12-14 06:09:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-12-14 06:09:28,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-12-14 06:09:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2022-12-14 06:09:28,319 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2022-12-14 06:09:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-12-14 06:09:28,319 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-12-14 06:09:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure bm_entry_write [2022-12-14 06:09:28,320 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_entry_write [2022-12-14 06:09:28,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:09:28,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-12-14 06:09:28,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-12-14 06:09:28,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 06:09:28,320 INFO L130 BoogieDeclarations]: Found specification of procedure string_unescape_inplace [2022-12-14 06:09:28,320 INFO L138 BoogieDeclarations]: Found implementation of procedure string_unescape_inplace [2022-12-14 06:09:28,320 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2022-12-14 06:09:28,320 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2022-12-14 06:09:28,320 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-12-14 06:09:28,320 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-12-14 06:09:28,320 INFO L130 BoogieDeclarations]: Found specification of procedure bm_status_read [2022-12-14 06:09:28,320 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_status_read [2022-12-14 06:09:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-12-14 06:09:28,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-12-14 06:09:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-12-14 06:09:28,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-12-14 06:09:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:09:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-12-14 06:09:28,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-12-14 06:09:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:09:28,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:09:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i_mutex_of_inode [2022-12-14 06:09:28,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i_mutex_of_inode [2022-12-14 06:09:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-12-14 06:09:28,321 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-12-14 06:09:28,703 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:09:28,705 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:09:28,881 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-12-14 06:09:30,206 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-12-14 06:09:30,265 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:09:30,599 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:09:30,599 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 06:09:30,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:09:30 BoogieIcfgContainer [2022-12-14 06:09:30,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:09:30,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:09:30,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:09:30,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:09:30,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:09:26" (1/3) ... [2022-12-14 06:09:30,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f516dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:09:30, skipping insertion in model container [2022-12-14 06:09:30,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:09:27" (2/3) ... [2022-12-14 06:09:30,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f516dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:09:30, skipping insertion in model container [2022-12-14 06:09:30,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:09:30" (3/3) ... [2022-12-14 06:09:30,608 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i [2022-12-14 06:09:30,623 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:09:30,623 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-14 06:09:30,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:09:30,675 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e10c4cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:09:30,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-14 06:09:30,681 INFO L276 IsEmpty]: Start isEmpty. Operand has 766 states, 476 states have (on average 1.3718487394957983) internal successors, (653), 483 states have internal predecessors, (653), 238 states have call successors, (238), 50 states have call predecessors, (238), 49 states have return successors, (231), 231 states have call predecessors, (231), 231 states have call successors, (231) [2022-12-14 06:09:30,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-12-14 06:09:30,697 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:30,698 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 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] [2022-12-14 06:09:30,698 INFO L420 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:09:30,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:30,702 INFO L85 PathProgramCache]: Analyzing trace with hash -753222004, now seen corresponding path program 1 times [2022-12-14 06:09:30,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:30,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991206350] [2022-12-14 06:09:30,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:30,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:31,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2259 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2259 trivial. 0 not checked. [2022-12-14 06:09:31,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:31,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991206350] [2022-12-14 06:09:31,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991206350] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:31,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:31,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:09:31,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468501058] [2022-12-14 06:09:31,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:31,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:09:31,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:31,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:09:31,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:09:31,306 INFO L87 Difference]: Start difference. First operand has 766 states, 476 states have (on average 1.3718487394957983) internal successors, (653), 483 states have internal predecessors, (653), 238 states have call successors, (238), 50 states have call predecessors, (238), 49 states have return successors, (231), 231 states have call predecessors, (231), 231 states have call successors, (231) Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-12-14 06:09:34,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:09:34,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:34,344 INFO L93 Difference]: Finished difference Result 2128 states and 3158 transitions. [2022-12-14 06:09:34,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:09:34,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 264 [2022-12-14 06:09:34,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:34,368 INFO L225 Difference]: With dead ends: 2128 [2022-12-14 06:09:34,368 INFO L226 Difference]: Without dead ends: 1400 [2022-12-14 06:09:34,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:09:34,375 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 974 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:34,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 2060 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 339 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 06:09:34,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2022-12-14 06:09:34,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1396. [2022-12-14 06:09:34,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 886 states have (on average 1.3690744920993227) internal successors, (1213), 899 states have internal predecessors, (1213), 413 states have call successors, (413), 95 states have call predecessors, (413), 94 states have return successors, (409), 409 states have call predecessors, (409), 409 states have call successors, (409) [2022-12-14 06:09:34,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 2035 transitions. [2022-12-14 06:09:34,491 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 2035 transitions. Word has length 264 [2022-12-14 06:09:34,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:34,492 INFO L495 AbstractCegarLoop]: Abstraction has 1396 states and 2035 transitions. [2022-12-14 06:09:34,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-12-14 06:09:34,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 2035 transitions. [2022-12-14 06:09:34,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-12-14 06:09:34,499 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:34,499 INFO L195 NwaCegarLoop]: trace histogram [28, 24, 24, 24, 24, 24, 24, 5, 5, 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] [2022-12-14 06:09:34,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:09:34,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:09:34,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:34,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2100890407, now seen corresponding path program 1 times [2022-12-14 06:09:34,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:34,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96519736] [2022-12-14 06:09:34,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:34,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:35,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2447 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2447 trivial. 0 not checked. [2022-12-14 06:09:35,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:35,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96519736] [2022-12-14 06:09:35,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96519736] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:35,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:35,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:09:35,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491636877] [2022-12-14 06:09:35,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:35,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:09:35,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:35,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:09:35,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:09:35,299 INFO L87 Difference]: Start difference. First operand 1396 states and 2035 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-12-14 06:09:37,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:09:39,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:09:41,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:09:41,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:41,490 INFO L93 Difference]: Finished difference Result 1472 states and 2110 transitions. [2022-12-14 06:09:41,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:09:41,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 309 [2022-12-14 06:09:41,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:41,501 INFO L225 Difference]: With dead ends: 1472 [2022-12-14 06:09:41,501 INFO L226 Difference]: Without dead ends: 1470 [2022-12-14 06:09:41,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:09:41,503 INFO L413 NwaCegarLoop]: 941 mSDtfsCounter, 944 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:41,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 2907 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 510 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-12-14 06:09:41,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2022-12-14 06:09:41,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1470. [2022-12-14 06:09:41,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 925 states have (on average 1.3556756756756756) internal successors, (1254), 938 states have internal predecessors, (1254), 429 states have call successors, (429), 114 states have call predecessors, (429), 113 states have return successors, (425), 425 states have call predecessors, (425), 425 states have call successors, (425) [2022-12-14 06:09:41,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2108 transitions. [2022-12-14 06:09:41,597 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2108 transitions. Word has length 309 [2022-12-14 06:09:41,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:41,598 INFO L495 AbstractCegarLoop]: Abstraction has 1470 states and 2108 transitions. [2022-12-14 06:09:41,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-12-14 06:09:41,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2108 transitions. [2022-12-14 06:09:41,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-12-14 06:09:41,606 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:41,606 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:09:41,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:09:41,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:09:41,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:41,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1065468395, now seen corresponding path program 1 times [2022-12-14 06:09:41,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:41,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196867596] [2022-12-14 06:09:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:41,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:41,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2283 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2283 trivial. 0 not checked. [2022-12-14 06:09:41,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:41,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196867596] [2022-12-14 06:09:41,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196867596] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:41,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:41,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:09:41,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90213310] [2022-12-14 06:09:41,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:41,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:09:41,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:41,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:09:41,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:09:41,876 INFO L87 Difference]: Start difference. First operand 1470 states and 2108 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-12-14 06:09:45,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:09:45,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:45,602 INFO L93 Difference]: Finished difference Result 3213 states and 4569 transitions. [2022-12-14 06:09:45,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:09:45,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 318 [2022-12-14 06:09:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:45,613 INFO L225 Difference]: With dead ends: 3213 [2022-12-14 06:09:45,613 INFO L226 Difference]: Without dead ends: 1792 [2022-12-14 06:09:45,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:09:45,620 INFO L413 NwaCegarLoop]: 1080 mSDtfsCounter, 709 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:45,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 1988 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 352 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-12-14 06:09:45,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2022-12-14 06:09:45,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1770. [2022-12-14 06:09:45,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1118 states have (on average 1.338103756708408) internal successors, (1496), 1138 states have internal predecessors, (1496), 501 states have call successors, (501), 149 states have call predecessors, (501), 148 states have return successors, (497), 492 states have call predecessors, (497), 497 states have call successors, (497) [2022-12-14 06:09:45,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2494 transitions. [2022-12-14 06:09:45,731 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2494 transitions. Word has length 318 [2022-12-14 06:09:45,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:45,731 INFO L495 AbstractCegarLoop]: Abstraction has 1770 states and 2494 transitions. [2022-12-14 06:09:45,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-12-14 06:09:45,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2494 transitions. [2022-12-14 06:09:45,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-12-14 06:09:45,739 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:45,739 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 5, 5, 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] [2022-12-14 06:09:45,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 06:09:45,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:09:45,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:45,740 INFO L85 PathProgramCache]: Analyzing trace with hash -452622214, now seen corresponding path program 1 times [2022-12-14 06:09:45,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:45,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883727870] [2022-12-14 06:09:45,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:45,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:45,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2295 trivial. 0 not checked. [2022-12-14 06:09:45,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:45,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883727870] [2022-12-14 06:09:45,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883727870] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:45,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:45,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:09:45,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284891312] [2022-12-14 06:09:45,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:45,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:09:45,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:45,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:09:45,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:09:45,956 INFO L87 Difference]: Start difference. First operand 1770 states and 2494 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-12-14 06:09:48,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:09:48,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:48,643 INFO L93 Difference]: Finished difference Result 4539 states and 6372 transitions. [2022-12-14 06:09:48,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:09:48,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 320 [2022-12-14 06:09:48,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:48,658 INFO L225 Difference]: With dead ends: 4539 [2022-12-14 06:09:48,658 INFO L226 Difference]: Without dead ends: 2818 [2022-12-14 06:09:48,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:09:48,662 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 906 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:48,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 2057 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 358 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 06:09:48,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2022-12-14 06:09:48,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2795. [2022-12-14 06:09:48,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2795 states, 1788 states have (on average 1.3389261744966443) internal successors, (2394), 1822 states have internal predecessors, (2394), 754 states have call successors, (754), 251 states have call predecessors, (754), 250 states have return successors, (752), 734 states have call predecessors, (752), 750 states have call successors, (752) [2022-12-14 06:09:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 3900 transitions. [2022-12-14 06:09:48,771 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 3900 transitions. Word has length 320 [2022-12-14 06:09:48,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:48,771 INFO L495 AbstractCegarLoop]: Abstraction has 2795 states and 3900 transitions. [2022-12-14 06:09:48,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-12-14 06:09:48,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 3900 transitions. [2022-12-14 06:09:48,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-12-14 06:09:48,775 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:48,776 INFO L195 NwaCegarLoop]: trace histogram [28, 24, 24, 24, 24, 24, 24, 4, 4, 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] [2022-12-14 06:09:48,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 06:09:48,776 INFO L420 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:09:48,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:48,776 INFO L85 PathProgramCache]: Analyzing trace with hash -115732417, now seen corresponding path program 1 times [2022-12-14 06:09:48,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:48,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780341340] [2022-12-14 06:09:48,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:48,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:49,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2443 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2441 trivial. 0 not checked. [2022-12-14 06:09:49,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:49,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780341340] [2022-12-14 06:09:49,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780341340] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:49,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:49,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:09:49,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349704890] [2022-12-14 06:09:49,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:49,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:09:49,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:49,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:09:49,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:09:49,266 INFO L87 Difference]: Start difference. First operand 2795 states and 3900 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-12-14 06:09:51,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:09:52,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:52,116 INFO L93 Difference]: Finished difference Result 2801 states and 3905 transitions. [2022-12-14 06:09:52,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:09:52,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 312 [2022-12-14 06:09:52,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:52,128 INFO L225 Difference]: With dead ends: 2801 [2022-12-14 06:09:52,129 INFO L226 Difference]: Without dead ends: 2797 [2022-12-14 06:09:52,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:09:52,130 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 1019 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:52,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 2798 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-14 06:09:52,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2022-12-14 06:09:52,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2797. [2022-12-14 06:09:52,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 1790 states have (on average 1.3379888268156424) internal successors, (2395), 1823 states have internal predecessors, (2395), 754 states have call successors, (754), 252 states have call predecessors, (754), 250 states have return successors, (752), 734 states have call predecessors, (752), 750 states have call successors, (752) [2022-12-14 06:09:52,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 3901 transitions. [2022-12-14 06:09:52,287 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 3901 transitions. Word has length 312 [2022-12-14 06:09:52,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:52,288 INFO L495 AbstractCegarLoop]: Abstraction has 2797 states and 3901 transitions. [2022-12-14 06:09:52,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-12-14 06:09:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 3901 transitions. [2022-12-14 06:09:52,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-12-14 06:09:52,295 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:52,295 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 5, 5, 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] [2022-12-14 06:09:52,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 06:09:52,295 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:09:52,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:52,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2042111470, now seen corresponding path program 1 times [2022-12-14 06:09:52,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:52,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450052416] [2022-12-14 06:09:52,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:52,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:52,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2295 trivial. 0 not checked. [2022-12-14 06:09:52,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:52,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450052416] [2022-12-14 06:09:52,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450052416] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:52,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:52,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:09:52,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416916320] [2022-12-14 06:09:52,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:52,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:09:52,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:52,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:09:52,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:09:52,458 INFO L87 Difference]: Start difference. First operand 2797 states and 3901 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-12-14 06:09:53,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:53,590 INFO L93 Difference]: Finished difference Result 7353 states and 10273 transitions. [2022-12-14 06:09:53,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:09:53,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 322 [2022-12-14 06:09:53,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:53,610 INFO L225 Difference]: With dead ends: 7353 [2022-12-14 06:09:53,610 INFO L226 Difference]: Without dead ends: 4605 [2022-12-14 06:09:53,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:09:53,620 INFO L413 NwaCegarLoop]: 1208 mSDtfsCounter, 909 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:53,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 2116 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 06:09:53,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2022-12-14 06:09:53,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 4581. [2022-12-14 06:09:53,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4581 states, 2971 states have (on average 1.3423089868731066) internal successors, (3988), 3034 states have internal predecessors, (3988), 1193 states have call successors, (1193), 416 states have call predecessors, (1193), 414 states have return successors, (1193), 1152 states have call predecessors, (1193), 1189 states have call successors, (1193) [2022-12-14 06:09:53,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 6374 transitions. [2022-12-14 06:09:53,861 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 6374 transitions. Word has length 322 [2022-12-14 06:09:53,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:53,861 INFO L495 AbstractCegarLoop]: Abstraction has 4581 states and 6374 transitions. [2022-12-14 06:09:53,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-12-14 06:09:53,862 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 6374 transitions. [2022-12-14 06:09:53,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-12-14 06:09:53,868 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:53,868 INFO L195 NwaCegarLoop]: trace histogram [28, 24, 24, 24, 24, 24, 24, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:09:53,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 06:09:53,869 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:09:53,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:53,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1144399837, now seen corresponding path program 1 times [2022-12-14 06:09:53,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:53,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429095697] [2022-12-14 06:09:53,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:53,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:09:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:09:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2449 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2445 trivial. 0 not checked. [2022-12-14 06:09:54,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:09:54,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429095697] [2022-12-14 06:09:54,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429095697] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:09:54,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:09:54,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:09:54,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8182577] [2022-12-14 06:09:54,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:09:54,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:09:54,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:09:54,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:09:54,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:09:54,373 INFO L87 Difference]: Start difference. First operand 4581 states and 6374 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-12-14 06:09:57,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:09:59,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:09:59,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:09:59,709 INFO L93 Difference]: Finished difference Result 4581 states and 6374 transitions. [2022-12-14 06:09:59,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:09:59,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 317 [2022-12-14 06:09:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:09:59,721 INFO L225 Difference]: With dead ends: 4581 [2022-12-14 06:09:59,721 INFO L226 Difference]: Without dead ends: 4491 [2022-12-14 06:09:59,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:09:59,724 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 1015 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:09:59,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 2795 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 477 Invalid, 2 Unknown, 0 Unchecked, 5.1s Time] [2022-12-14 06:09:59,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4491 states. [2022-12-14 06:09:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4491 to 4491. [2022-12-14 06:09:59,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4491 states, 2946 states have (on average 1.3370672097759675) internal successors, (3939), 2985 states have internal predecessors, (3939), 1139 states have call successors, (1139), 404 states have call predecessors, (1139), 404 states have return successors, (1143), 1123 states have call predecessors, (1143), 1139 states have call successors, (1143) [2022-12-14 06:09:59,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 6221 transitions. [2022-12-14 06:09:59,930 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 6221 transitions. Word has length 317 [2022-12-14 06:09:59,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:09:59,931 INFO L495 AbstractCegarLoop]: Abstraction has 4491 states and 6221 transitions. [2022-12-14 06:09:59,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-12-14 06:09:59,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 6221 transitions. [2022-12-14 06:09:59,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2022-12-14 06:09:59,938 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:09:59,939 INFO L195 NwaCegarLoop]: trace histogram [29, 24, 24, 24, 24, 24, 24, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:09:59,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 06:09:59,939 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:09:59,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:09:59,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1968445159, now seen corresponding path program 1 times [2022-12-14 06:09:59,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:09:59,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39009658] [2022-12-14 06:09:59,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:09:59,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:10:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:10:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2570 trivial. 0 not checked. [2022-12-14 06:10:00,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:10:00,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39009658] [2022-12-14 06:10:00,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39009658] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:10:00,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:10:00,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:10:00,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975159966] [2022-12-14 06:10:00,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:10:00,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:10:00,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:10:00,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:10:00,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:10:00,100 INFO L87 Difference]: Start difference. First operand 4491 states and 6221 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-12-14 06:10:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:10:01,576 INFO L93 Difference]: Finished difference Result 10309 states and 14270 transitions. [2022-12-14 06:10:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:10:01,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 379 [2022-12-14 06:10:01,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:10:01,592 INFO L225 Difference]: With dead ends: 10309 [2022-12-14 06:10:01,592 INFO L226 Difference]: Without dead ends: 6074 [2022-12-14 06:10:01,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:10:01,600 INFO L413 NwaCegarLoop]: 1248 mSDtfsCounter, 688 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:10:01,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 2117 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 06:10:01,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6074 states. [2022-12-14 06:10:01,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6074 to 6068. [2022-12-14 06:10:01,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6068 states, 3989 states have (on average 1.3329155176736025) internal successors, (5317), 4042 states have internal predecessors, (5317), 1517 states have call successors, (1517), 560 states have call predecessors, (1517), 560 states have return successors, (1521), 1493 states have call predecessors, (1521), 1517 states have call successors, (1521) [2022-12-14 06:10:01,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6068 states to 6068 states and 8355 transitions. [2022-12-14 06:10:01,842 INFO L78 Accepts]: Start accepts. Automaton has 6068 states and 8355 transitions. Word has length 379 [2022-12-14 06:10:01,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:10:01,843 INFO L495 AbstractCegarLoop]: Abstraction has 6068 states and 8355 transitions. [2022-12-14 06:10:01,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-12-14 06:10:01,843 INFO L276 IsEmpty]: Start isEmpty. Operand 6068 states and 8355 transitions. [2022-12-14 06:10:01,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2022-12-14 06:10:01,853 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:10:01,854 INFO L195 NwaCegarLoop]: trace histogram [29, 24, 24, 24, 24, 24, 24, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:10:01,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 06:10:01,854 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:10:01,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:10:01,855 INFO L85 PathProgramCache]: Analyzing trace with hash 239246376, now seen corresponding path program 1 times [2022-12-14 06:10:01,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:10:01,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484695378] [2022-12-14 06:10:01,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:10:01,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:10:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:10:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2594 trivial. 0 not checked. [2022-12-14 06:10:02,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:10:02,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484695378] [2022-12-14 06:10:02,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484695378] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:10:02,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:10:02,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:10:02,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750946832] [2022-12-14 06:10:02,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:10:02,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:10:02,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:10:02,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:10:02,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:10:02,077 INFO L87 Difference]: Start difference. First operand 6068 states and 8355 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-12-14 06:10:03,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:10:03,420 INFO L93 Difference]: Finished difference Result 14481 states and 19968 transitions. [2022-12-14 06:10:03,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:10:03,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 381 [2022-12-14 06:10:03,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:10:03,450 INFO L225 Difference]: With dead ends: 14481 [2022-12-14 06:10:03,450 INFO L226 Difference]: Without dead ends: 8669 [2022-12-14 06:10:03,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:10:03,460 INFO L413 NwaCegarLoop]: 1281 mSDtfsCounter, 886 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 2150 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:10:03,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 2150 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 06:10:03,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8669 states. [2022-12-14 06:10:03,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8669 to 8663. [2022-12-14 06:10:03,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8663 states, 5719 states have (on average 1.333624759573352) internal successors, (7627), 5794 states have internal predecessors, (7627), 2135 states have call successors, (2135), 807 states have call predecessors, (2135), 807 states have return successors, (2139), 2099 states have call predecessors, (2139), 2135 states have call successors, (2139) [2022-12-14 06:10:03,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8663 states to 8663 states and 11901 transitions. [2022-12-14 06:10:03,939 INFO L78 Accepts]: Start accepts. Automaton has 8663 states and 11901 transitions. Word has length 381 [2022-12-14 06:10:03,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:10:03,940 INFO L495 AbstractCegarLoop]: Abstraction has 8663 states and 11901 transitions. [2022-12-14 06:10:03,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-12-14 06:10:03,940 INFO L276 IsEmpty]: Start isEmpty. Operand 8663 states and 11901 transitions. [2022-12-14 06:10:03,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-12-14 06:10:03,945 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:10:03,945 INFO L195 NwaCegarLoop]: trace histogram [29, 24, 24, 24, 24, 24, 24, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:10:03,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 06:10:03,945 INFO L420 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:10:03,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:10:03,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1418639936, now seen corresponding path program 1 times [2022-12-14 06:10:03,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:10:03,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903678492] [2022-12-14 06:10:03,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:10:03,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:10:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:10:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2594 trivial. 0 not checked. [2022-12-14 06:10:04,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:10:04,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903678492] [2022-12-14 06:10:04,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903678492] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:10:04,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:10:04,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:10:04,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202682170] [2022-12-14 06:10:04,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:10:04,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:10:04,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:10:04,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:10:04,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:10:04,083 INFO L87 Difference]: Start difference. First operand 8663 states and 11901 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-12-14 06:10:05,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:10:05,796 INFO L93 Difference]: Finished difference Result 20723 states and 28518 transitions. [2022-12-14 06:10:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:10:05,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 383 [2022-12-14 06:10:05,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:10:05,832 INFO L225 Difference]: With dead ends: 20723 [2022-12-14 06:10:05,832 INFO L226 Difference]: Without dead ends: 12316 [2022-12-14 06:10:05,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:10:05,849 INFO L413 NwaCegarLoop]: 1305 mSDtfsCounter, 888 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 2174 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:10:05,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 2174 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 06:10:05,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12316 states. [2022-12-14 06:10:06,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12316 to 12310. [2022-12-14 06:10:06,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12310 states, 8166 states have (on average 1.334557923095763) internal successors, (10898), 8276 states have internal predecessors, (10898), 2987 states have call successors, (2987), 1155 states have call predecessors, (2987), 1155 states have return successors, (2993), 2932 states have call predecessors, (2993), 2987 states have call successors, (2993) [2022-12-14 06:10:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12310 states to 12310 states and 16878 transitions. [2022-12-14 06:10:06,350 INFO L78 Accepts]: Start accepts. Automaton has 12310 states and 16878 transitions. Word has length 383 [2022-12-14 06:10:06,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:10:06,351 INFO L495 AbstractCegarLoop]: Abstraction has 12310 states and 16878 transitions. [2022-12-14 06:10:06,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-12-14 06:10:06,351 INFO L276 IsEmpty]: Start isEmpty. Operand 12310 states and 16878 transitions. [2022-12-14 06:10:06,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-12-14 06:10:06,363 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:10:06,363 INFO L195 NwaCegarLoop]: trace histogram [32, 24, 24, 24, 24, 24, 24, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:10:06,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 06:10:06,364 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:10:06,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:10:06,364 INFO L85 PathProgramCache]: Analyzing trace with hash 2086716756, now seen corresponding path program 1 times [2022-12-14 06:10:06,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:10:06,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79352858] [2022-12-14 06:10:06,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:10:06,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:10:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:10:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2936 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2936 trivial. 0 not checked. [2022-12-14 06:10:06,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:10:06,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79352858] [2022-12-14 06:10:06,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79352858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:10:06,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:10:06,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:10:06,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490986613] [2022-12-14 06:10:06,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:10:06,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:10:06,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:10:06,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:10:06,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:10:06,958 INFO L87 Difference]: Start difference. First operand 12310 states and 16878 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-12-14 06:10:08,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:10:08,820 INFO L93 Difference]: Finished difference Result 29771 states and 42019 transitions. [2022-12-14 06:10:08,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:10:08,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 438 [2022-12-14 06:10:08,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:10:08,859 INFO L225 Difference]: With dead ends: 29771 [2022-12-14 06:10:08,859 INFO L226 Difference]: Without dead ends: 17717 [2022-12-14 06:10:08,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:10:08,878 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 1362 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:10:08,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 2230 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 06:10:08,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17717 states. [2022-12-14 06:10:09,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17717 to 11910. [2022-12-14 06:10:09,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11910 states, 7928 states have (on average 1.3332492431886982) internal successors, (10570), 8020 states have internal predecessors, (10570), 2851 states have call successors, (2851), 1129 states have call predecessors, (2851), 1129 states have return successors, (2854), 2796 states have call predecessors, (2854), 2851 states have call successors, (2854) [2022-12-14 06:10:09,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11910 states to 11910 states and 16275 transitions. [2022-12-14 06:10:09,453 INFO L78 Accepts]: Start accepts. Automaton has 11910 states and 16275 transitions. Word has length 438 [2022-12-14 06:10:09,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:10:09,454 INFO L495 AbstractCegarLoop]: Abstraction has 11910 states and 16275 transitions. [2022-12-14 06:10:09,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-12-14 06:10:09,455 INFO L276 IsEmpty]: Start isEmpty. Operand 11910 states and 16275 transitions. [2022-12-14 06:10:09,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2022-12-14 06:10:09,465 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:10:09,465 INFO L195 NwaCegarLoop]: trace histogram [32, 24, 24, 24, 24, 24, 24, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:10:09,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 06:10:09,465 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:10:09,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:10:09,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1222951416, now seen corresponding path program 1 times [2022-12-14 06:10:09,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:10:09,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233574560] [2022-12-14 06:10:09,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:10:09,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:10:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:10:09,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2973 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2022-12-14 06:10:09,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:10:09,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233574560] [2022-12-14 06:10:09,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233574560] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:10:09,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446275031] [2022-12-14 06:10:09,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:10:09,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:10:09,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:10:09,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:10:09,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 06:10:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:10:10,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:10:10,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:10:10,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2973 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 2734 trivial. 0 not checked. [2022-12-14 06:10:10,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:10:10,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446275031] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:10:10,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 06:10:10,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-12-14 06:10:10,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675518710] [2022-12-14 06:10:10,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:10:10,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:10:10,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:10:10,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:10:10,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:10:10,491 INFO L87 Difference]: Start difference. First operand 11910 states and 16275 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-12-14 06:10:13,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:10:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:10:14,410 INFO L93 Difference]: Finished difference Result 27205 states and 37156 transitions. [2022-12-14 06:10:14,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:10:14,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 441 [2022-12-14 06:10:14,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:10:14,460 INFO L225 Difference]: With dead ends: 27205 [2022-12-14 06:10:14,460 INFO L226 Difference]: Without dead ends: 15551 [2022-12-14 06:10:14,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:10:14,483 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 855 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 3683 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:10:14,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 3683 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1114 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-12-14 06:10:14,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15551 states. [2022-12-14 06:10:15,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15551 to 15542. [2022-12-14 06:10:15,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15542 states, 10362 states have (on average 1.332657788071801) internal successors, (13809), 10481 states have internal predecessors, (13809), 3671 states have call successors, (3671), 1507 states have call predecessors, (3671), 1507 states have return successors, (3677), 3595 states have call predecessors, (3677), 3671 states have call successors, (3677) [2022-12-14 06:10:15,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15542 states to 15542 states and 21157 transitions. [2022-12-14 06:10:15,509 INFO L78 Accepts]: Start accepts. Automaton has 15542 states and 21157 transitions. Word has length 441 [2022-12-14 06:10:15,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:10:15,509 INFO L495 AbstractCegarLoop]: Abstraction has 15542 states and 21157 transitions. [2022-12-14 06:10:15,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-12-14 06:10:15,510 INFO L276 IsEmpty]: Start isEmpty. Operand 15542 states and 21157 transitions. [2022-12-14 06:10:15,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-12-14 06:10:15,516 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:10:15,517 INFO L195 NwaCegarLoop]: trace histogram [32, 24, 24, 24, 24, 24, 24, 13, 13, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:10:15,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:10:15,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 06:10:15,719 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:10:15,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:10:15,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1967474919, now seen corresponding path program 1 times [2022-12-14 06:10:15,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:10:15,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112416264] [2022-12-14 06:10:15,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:10:15,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:10:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:10:16,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2980 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 2960 trivial. 0 not checked. [2022-12-14 06:10:16,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:10:16,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112416264] [2022-12-14 06:10:16,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112416264] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:10:16,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:10:16,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:10:16,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645823936] [2022-12-14 06:10:16,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:10:16,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:10:16,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:10:16,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:10:16,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:10:16,065 INFO L87 Difference]: Start difference. First operand 15542 states and 21157 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2022-12-14 06:10:19,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:10:19,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:10:19,347 INFO L93 Difference]: Finished difference Result 35034 states and 47617 transitions. [2022-12-14 06:10:19,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:10:19,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 445 [2022-12-14 06:10:19,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:10:19,392 INFO L225 Difference]: With dead ends: 35034 [2022-12-14 06:10:19,392 INFO L226 Difference]: Without dead ends: 19748 [2022-12-14 06:10:19,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:10:19,449 INFO L413 NwaCegarLoop]: 1456 mSDtfsCounter, 720 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:10:19,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 2600 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 06:10:19,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19748 states. [2022-12-14 06:10:20,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19748 to 19742. [2022-12-14 06:10:20,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19742 states, 13180 states have (on average 1.3294385432473446) internal successors, (17522), 13333 states have internal predecessors, (17522), 4595 states have call successors, (4595), 1965 states have call predecessors, (4595), 1965 states have return successors, (4601), 4495 states have call predecessors, (4601), 4595 states have call successors, (4601) [2022-12-14 06:10:20,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19742 states to 19742 states and 26718 transitions. [2022-12-14 06:10:20,877 INFO L78 Accepts]: Start accepts. Automaton has 19742 states and 26718 transitions. Word has length 445 [2022-12-14 06:10:20,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:10:20,877 INFO L495 AbstractCegarLoop]: Abstraction has 19742 states and 26718 transitions. [2022-12-14 06:10:20,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2022-12-14 06:10:20,877 INFO L276 IsEmpty]: Start isEmpty. Operand 19742 states and 26718 transitions. [2022-12-14 06:10:20,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2022-12-14 06:10:20,884 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:10:20,884 INFO L195 NwaCegarLoop]: trace histogram [32, 24, 24, 24, 24, 24, 24, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:10:20,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 06:10:20,884 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:10:20,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:10:20,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1237641476, now seen corresponding path program 1 times [2022-12-14 06:10:20,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:10:20,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754128881] [2022-12-14 06:10:20,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:10:20,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:10:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:10:21,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2952 trivial. 0 not checked. [2022-12-14 06:10:21,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:10:21,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754128881] [2022-12-14 06:10:21,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754128881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:10:21,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:10:21,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:10:21,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307467933] [2022-12-14 06:10:21,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:10:21,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:10:21,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:10:21,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:10:21,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:10:21,126 INFO L87 Difference]: Start difference. First operand 19742 states and 26718 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-12-14 06:10:25,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:10:26,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:10:26,627 INFO L93 Difference]: Finished difference Result 45043 states and 60962 transitions. [2022-12-14 06:10:26,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:10:26,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 441 [2022-12-14 06:10:26,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:10:26,690 INFO L225 Difference]: With dead ends: 45043 [2022-12-14 06:10:26,690 INFO L226 Difference]: Without dead ends: 25557 [2022-12-14 06:10:26,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:10:26,719 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 875 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:10:26,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 2832 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-14 06:10:26,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25557 states. [2022-12-14 06:10:27,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25557 to 25551. [2022-12-14 06:10:27,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25551 states, 17114 states have (on average 1.3300222040434733) internal successors, (22762), 17313 states have internal predecessors, (22762), 5852 states have call successors, (5852), 2583 states have call predecessors, (5852), 2583 states have return successors, (5860), 5718 states have call predecessors, (5860), 5852 states have call successors, (5860) [2022-12-14 06:10:28,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25551 states to 25551 states and 34474 transitions. [2022-12-14 06:10:28,024 INFO L78 Accepts]: Start accepts. Automaton has 25551 states and 34474 transitions. Word has length 441 [2022-12-14 06:10:28,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:10:28,025 INFO L495 AbstractCegarLoop]: Abstraction has 25551 states and 34474 transitions. [2022-12-14 06:10:28,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-12-14 06:10:28,025 INFO L276 IsEmpty]: Start isEmpty. Operand 25551 states and 34474 transitions. [2022-12-14 06:10:28,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-12-14 06:10:28,038 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:10:28,038 INFO L195 NwaCegarLoop]: trace histogram [34, 24, 24, 24, 24, 24, 24, 14, 14, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:10:28,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 06:10:28,038 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:10:28,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:10:28,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1424752, now seen corresponding path program 1 times [2022-12-14 06:10:28,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:10:28,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123996265] [2022-12-14 06:10:28,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:10:28,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:10:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:10:28,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3181 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3175 trivial. 0 not checked. [2022-12-14 06:10:28,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:10:28,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123996265] [2022-12-14 06:10:28,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123996265] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:10:28,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767837657] [2022-12-14 06:10:28,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:10:28,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:10:28,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:10:28,363 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:10:28,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 06:10:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:10:28,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 3030 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:10:28,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:10:29,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3181 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 2908 trivial. 0 not checked. [2022-12-14 06:10:29,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:10:29,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767837657] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:10:29,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 06:10:29,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-12-14 06:10:29,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808349496] [2022-12-14 06:10:29,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:10:29,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:10:29,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:10:29,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:10:29,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:10:29,028 INFO L87 Difference]: Start difference. First operand 25551 states and 34474 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-12-14 06:10:33,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:10:35,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:10:36,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:10:36,380 INFO L93 Difference]: Finished difference Result 56787 states and 76654 transitions. [2022-12-14 06:10:36,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:10:36,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 476 [2022-12-14 06:10:36,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:10:36,451 INFO L225 Difference]: With dead ends: 56787 [2022-12-14 06:10:36,451 INFO L226 Difference]: Without dead ends: 31492 [2022-12-14 06:10:36,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:10:36,492 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 847 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 3686 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:10:36,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 3686 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1121 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-12-14 06:10:36,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31492 states. [2022-12-14 06:10:37,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31492 to 31486. [2022-12-14 06:10:37,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31486 states, 21147 states have (on average 1.3308743557005722) internal successors, (28144), 21386 states have internal predecessors, (28144), 7137 states have call successors, (7137), 3200 states have call predecessors, (7137), 3200 states have return successors, (7145), 6971 states have call predecessors, (7145), 7137 states have call successors, (7145) [2022-12-14 06:10:37,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31486 states to 31486 states and 42426 transitions. [2022-12-14 06:10:37,966 INFO L78 Accepts]: Start accepts. Automaton has 31486 states and 42426 transitions. Word has length 476 [2022-12-14 06:10:37,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:10:37,967 INFO L495 AbstractCegarLoop]: Abstraction has 31486 states and 42426 transitions. [2022-12-14 06:10:37,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-12-14 06:10:37,967 INFO L276 IsEmpty]: Start isEmpty. Operand 31486 states and 42426 transitions. [2022-12-14 06:10:37,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-12-14 06:10:37,980 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:10:37,980 INFO L195 NwaCegarLoop]: trace histogram [34, 24, 24, 24, 24, 24, 24, 14, 14, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:10:37,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 06:10:38,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 06:10:38,182 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:10:38,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:10:38,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2016859759, now seen corresponding path program 1 times [2022-12-14 06:10:38,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:10:38,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354149757] [2022-12-14 06:10:38,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:10:38,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:10:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:10:38,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3175 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3175 trivial. 0 not checked. [2022-12-14 06:10:38,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:10:38,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354149757] [2022-12-14 06:10:38,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354149757] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:10:38,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:10:38,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:10:38,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160853534] [2022-12-14 06:10:38,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:10:38,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:10:38,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:10:38,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:10:38,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:10:38,457 INFO L87 Difference]: Start difference. First operand 31486 states and 42426 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2022-12-14 06:10:42,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:10:44,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:10:44,050 INFO L93 Difference]: Finished difference Result 62900 states and 84774 transitions. [2022-12-14 06:10:44,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:10:44,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) Word has length 474 [2022-12-14 06:10:44,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:10:44,143 INFO L225 Difference]: With dead ends: 62900 [2022-12-14 06:10:44,143 INFO L226 Difference]: Without dead ends: 31670 [2022-12-14 06:10:44,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:10:44,196 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 2 mSDsluCounter, 2662 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3551 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:10:44,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3551 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 639 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-12-14 06:10:44,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31670 states. [2022-12-14 06:10:45,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31670 to 31606. [2022-12-14 06:10:45,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31606 states, 21247 states have (on average 1.3293170800583611) internal successors, (28244), 21486 states have internal predecessors, (28244), 7137 states have call successors, (7137), 3200 states have call predecessors, (7137), 3220 states have return successors, (7169), 6991 states have call predecessors, (7169), 7137 states have call successors, (7169) [2022-12-14 06:10:45,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31606 states to 31606 states and 42550 transitions. [2022-12-14 06:10:45,822 INFO L78 Accepts]: Start accepts. Automaton has 31606 states and 42550 transitions. Word has length 474 [2022-12-14 06:10:45,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:10:45,823 INFO L495 AbstractCegarLoop]: Abstraction has 31606 states and 42550 transitions. [2022-12-14 06:10:45,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2022-12-14 06:10:45,823 INFO L276 IsEmpty]: Start isEmpty. Operand 31606 states and 42550 transitions. [2022-12-14 06:10:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-12-14 06:10:45,837 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:10:45,837 INFO L195 NwaCegarLoop]: trace histogram [34, 24, 24, 24, 24, 24, 24, 14, 14, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:10:45,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 06:10:45,838 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:10:45,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:10:45,838 INFO L85 PathProgramCache]: Analyzing trace with hash 337775453, now seen corresponding path program 1 times [2022-12-14 06:10:45,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:10:45,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211789226] [2022-12-14 06:10:45,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:10:45,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:10:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:10:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3175 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3175 trivial. 0 not checked. [2022-12-14 06:10:46,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:10:46,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211789226] [2022-12-14 06:10:46,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211789226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:10:46,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:10:46,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:10:46,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920500327] [2022-12-14 06:10:46,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:10:46,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:10:46,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:10:46,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:10:46,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:10:46,147 INFO L87 Difference]: Start difference. First operand 31606 states and 42550 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2022-12-14 06:10:49,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:10:50,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:10:50,003 INFO L93 Difference]: Finished difference Result 63160 states and 85042 transitions. [2022-12-14 06:10:50,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:10:50,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) Word has length 475 [2022-12-14 06:10:50,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:10:50,096 INFO L225 Difference]: With dead ends: 63160 [2022-12-14 06:10:50,096 INFO L226 Difference]: Without dead ends: 31810 [2022-12-14 06:10:50,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:10:50,142 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 4 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3569 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:10:50,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3569 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 06:10:50,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31810 states. [2022-12-14 06:10:51,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31810 to 31706. [2022-12-14 06:10:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31706 states, 21327 states have (on average 1.3299573310826651) internal successors, (28364), 21566 states have internal predecessors, (28364), 7137 states have call successors, (7137), 3200 states have call predecessors, (7137), 3240 states have return successors, (7193), 7011 states have call predecessors, (7193), 7137 states have call successors, (7193) [2022-12-14 06:10:51,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31706 states to 31706 states and 42694 transitions. [2022-12-14 06:10:51,646 INFO L78 Accepts]: Start accepts. Automaton has 31706 states and 42694 transitions. Word has length 475 [2022-12-14 06:10:51,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:10:51,646 INFO L495 AbstractCegarLoop]: Abstraction has 31706 states and 42694 transitions. [2022-12-14 06:10:51,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2022-12-14 06:10:51,647 INFO L276 IsEmpty]: Start isEmpty. Operand 31706 states and 42694 transitions. [2022-12-14 06:10:51,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-12-14 06:10:51,660 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:10:51,660 INFO L195 NwaCegarLoop]: trace histogram [34, 24, 24, 24, 24, 24, 24, 14, 14, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:10:51,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 06:10:51,660 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:10:51,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:10:51,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1899447191, now seen corresponding path program 1 times [2022-12-14 06:10:51,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:10:51,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774962552] [2022-12-14 06:10:51,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:10:51,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:10:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:10:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 3152 trivial. 0 not checked. [2022-12-14 06:10:51,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:10:51,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774962552] [2022-12-14 06:10:51,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774962552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:10:51,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:10:51,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:10:51,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511472487] [2022-12-14 06:10:51,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:10:51,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:10:51,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:10:51,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:10:51,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:10:51,882 INFO L87 Difference]: Start difference. First operand 31706 states and 42694 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-12-14 06:10:54,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:10:54,935 INFO L93 Difference]: Finished difference Result 69891 states and 94076 transitions. [2022-12-14 06:10:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:10:54,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 479 [2022-12-14 06:10:54,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:10:55,025 INFO L225 Difference]: With dead ends: 69891 [2022-12-14 06:10:55,026 INFO L226 Difference]: Without dead ends: 38441 [2022-12-14 06:10:55,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:10:55,078 INFO L413 NwaCegarLoop]: 1449 mSDtfsCounter, 709 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:10:55,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 2598 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 06:10:55,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38441 states. [2022-12-14 06:10:56,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38441 to 38435. [2022-12-14 06:10:56,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38435 states, 25912 states have (on average 1.328882371102192) internal successors, (34434), 26204 states have internal predecessors, (34434), 8551 states have call successors, (8551), 3920 states have call predecessors, (8551), 3970 states have return successors, (8619), 8395 states have call predecessors, (8619), 8551 states have call successors, (8619) [2022-12-14 06:10:56,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38435 states to 38435 states and 51604 transitions. [2022-12-14 06:10:56,918 INFO L78 Accepts]: Start accepts. Automaton has 38435 states and 51604 transitions. Word has length 479 [2022-12-14 06:10:56,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:10:56,919 INFO L495 AbstractCegarLoop]: Abstraction has 38435 states and 51604 transitions. [2022-12-14 06:10:56,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-12-14 06:10:56,919 INFO L276 IsEmpty]: Start isEmpty. Operand 38435 states and 51604 transitions. [2022-12-14 06:10:56,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2022-12-14 06:10:56,935 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:10:56,936 INFO L195 NwaCegarLoop]: trace histogram [34, 24, 24, 24, 24, 24, 24, 14, 14, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:10:56,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 06:10:56,936 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:10:56,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:10:56,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1377590180, now seen corresponding path program 1 times [2022-12-14 06:10:56,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:10:56,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476261681] [2022-12-14 06:10:56,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:10:56,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:10:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:10:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3175 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 3143 trivial. 0 not checked. [2022-12-14 06:10:57,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:10:57,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476261681] [2022-12-14 06:10:57,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476261681] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:10:57,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:10:57,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:10:57,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741896579] [2022-12-14 06:10:57,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:10:57,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:10:57,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:10:57,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:10:57,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:10:57,261 INFO L87 Difference]: Start difference. First operand 38435 states and 51604 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-12-14 06:11:02,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:11:04,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:11:04,142 INFO L93 Difference]: Finished difference Result 85400 states and 114714 transitions. [2022-12-14 06:11:04,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:11:04,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 489 [2022-12-14 06:11:04,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:11:04,249 INFO L225 Difference]: With dead ends: 85400 [2022-12-14 06:11:04,249 INFO L226 Difference]: Without dead ends: 47221 [2022-12-14 06:11:04,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:11:04,307 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 855 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 3688 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:11:04,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 3688 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1125 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-12-14 06:11:04,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47221 states. [2022-12-14 06:11:06,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47221 to 47195. [2022-12-14 06:11:06,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47195 states, 31898 states have (on average 1.3299893410245156) internal successors, (42424), 32257 states have internal predecessors, (42424), 10394 states have call successors, (10394), 4851 states have call predecessors, (10394), 4901 states have return successors, (10464), 10186 states have call predecessors, (10464), 10394 states have call successors, (10464) [2022-12-14 06:11:06,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47195 states to 47195 states and 63282 transitions. [2022-12-14 06:11:06,594 INFO L78 Accepts]: Start accepts. Automaton has 47195 states and 63282 transitions. Word has length 489 [2022-12-14 06:11:06,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:11:06,595 INFO L495 AbstractCegarLoop]: Abstraction has 47195 states and 63282 transitions. [2022-12-14 06:11:06,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-12-14 06:11:06,595 INFO L276 IsEmpty]: Start isEmpty. Operand 47195 states and 63282 transitions. [2022-12-14 06:11:06,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2022-12-14 06:11:06,616 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:11:06,616 INFO L195 NwaCegarLoop]: trace histogram [36, 24, 24, 24, 24, 24, 24, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-12-14 06:11:06,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 06:11:06,616 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:11:06,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:11:06,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1811613563, now seen corresponding path program 1 times [2022-12-14 06:11:06,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:11:06,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531656190] [2022-12-14 06:11:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:11:06,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:11:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:11:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3408 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 3358 trivial. 0 not checked. [2022-12-14 06:11:06,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:11:06,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531656190] [2022-12-14 06:11:06,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531656190] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:11:06,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:11:06,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:11:06,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822998546] [2022-12-14 06:11:06,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:11:06,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:11:06,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:11:06,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:11:06,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:11:06,933 INFO L87 Difference]: Start difference. First operand 47195 states and 63282 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2022-12-14 06:11:14,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:11:16,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:11:16,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:11:16,728 INFO L93 Difference]: Finished difference Result 102902 states and 137982 transitions. [2022-12-14 06:11:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:11:16,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 506 [2022-12-14 06:11:16,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:11:16,874 INFO L225 Difference]: With dead ends: 102902 [2022-12-14 06:11:16,874 INFO L226 Difference]: Without dead ends: 55963 [2022-12-14 06:11:16,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:11:16,947 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 827 mSDsluCounter, 4034 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 5624 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:11:16,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 5624 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1074 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2022-12-14 06:11:16,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55963 states. [2022-12-14 06:11:19,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55963 to 55697. [2022-12-14 06:11:19,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55697 states, 37676 states have (on average 1.3312453551332413) internal successors, (50156), 38095 states have internal predecessors, (50156), 12228 states have call successors, (12228), 5706 states have call predecessors, (12228), 5791 states have return successors, (12333), 12005 states have call predecessors, (12333), 12228 states have call successors, (12333) [2022-12-14 06:11:19,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55697 states to 55697 states and 74717 transitions. [2022-12-14 06:11:19,646 INFO L78 Accepts]: Start accepts. Automaton has 55697 states and 74717 transitions. Word has length 506 [2022-12-14 06:11:19,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:11:19,646 INFO L495 AbstractCegarLoop]: Abstraction has 55697 states and 74717 transitions. [2022-12-14 06:11:19,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2022-12-14 06:11:19,647 INFO L276 IsEmpty]: Start isEmpty. Operand 55697 states and 74717 transitions. [2022-12-14 06:11:19,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-12-14 06:11:19,670 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:11:19,671 INFO L195 NwaCegarLoop]: trace histogram [36, 24, 24, 24, 24, 24, 24, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:11:19,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 06:11:19,671 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:11:19,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:11:19,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2064217124, now seen corresponding path program 1 times [2022-12-14 06:11:19,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:11:19,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693485459] [2022-12-14 06:11:19,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:11:19,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:11:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:11:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3408 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3399 trivial. 0 not checked. [2022-12-14 06:11:19,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:11:19,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693485459] [2022-12-14 06:11:19,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693485459] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:11:19,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274894935] [2022-12-14 06:11:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:11:19,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:11:19,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:11:19,973 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:11:19,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 06:11:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:11:20,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 3106 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 06:11:20,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:11:20,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3408 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3408 trivial. 0 not checked. [2022-12-14 06:11:20,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:11:20,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274894935] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:11:20,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 06:11:20,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-12-14 06:11:20,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144322744] [2022-12-14 06:11:20,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:11:20,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:11:20,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:11:20,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:11:20,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:11:20,575 INFO L87 Difference]: Start difference. First operand 55697 states and 74717 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (54), 2 states have call predecessors, (54), 3 states have return successors, (51), 3 states have call predecessors, (51), 2 states have call successors, (51) [2022-12-14 06:11:25,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:11:27,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:11:27,193 INFO L93 Difference]: Finished difference Result 111353 states and 149403 transitions. [2022-12-14 06:11:27,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:11:27,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (54), 2 states have call predecessors, (54), 3 states have return successors, (51), 3 states have call predecessors, (51), 2 states have call successors, (51) Word has length 507 [2022-12-14 06:11:27,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:11:27,334 INFO L225 Difference]: With dead ends: 111353 [2022-12-14 06:11:27,334 INFO L226 Difference]: Without dead ends: 55912 [2022-12-14 06:11:27,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:11:27,421 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 3 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3543 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:11:27,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3543 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 646 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-12-14 06:11:27,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55912 states. [2022-12-14 06:11:30,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55912 to 55837. [2022-12-14 06:11:30,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55837 states, 37796 states have (on average 1.330193671287967) internal successors, (50276), 38210 states have internal predecessors, (50276), 12228 states have call successors, (12228), 5706 states have call predecessors, (12228), 5811 states have return successors, (12353), 12030 states have call predecessors, (12353), 12228 states have call successors, (12353) [2022-12-14 06:11:30,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55837 states to 55837 states and 74857 transitions. [2022-12-14 06:11:30,293 INFO L78 Accepts]: Start accepts. Automaton has 55837 states and 74857 transitions. Word has length 507 [2022-12-14 06:11:30,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:11:30,294 INFO L495 AbstractCegarLoop]: Abstraction has 55837 states and 74857 transitions. [2022-12-14 06:11:30,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (54), 2 states have call predecessors, (54), 3 states have return successors, (51), 3 states have call predecessors, (51), 2 states have call successors, (51) [2022-12-14 06:11:30,294 INFO L276 IsEmpty]: Start isEmpty. Operand 55837 states and 74857 transitions. [2022-12-14 06:11:30,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-12-14 06:11:30,318 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:11:30,318 INFO L195 NwaCegarLoop]: trace histogram [36, 24, 24, 24, 24, 24, 24, 15, 15, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:11:30,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 06:11:30,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4352bf5f-5299-4c55-a8ba-ffbd36b2ab47/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:11:30,520 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:11:30,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:11:30,520 INFO L85 PathProgramCache]: Analyzing trace with hash 464007868, now seen corresponding path program 1 times [2022-12-14 06:11:30,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:11:30,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502856144] [2022-12-14 06:11:30,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:11:30,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:11:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:11:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3410 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 3363 trivial. 0 not checked. [2022-12-14 06:11:30,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:11:30,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502856144] [2022-12-14 06:11:30,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502856144] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:11:30,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:11:30,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:11:30,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300638687] [2022-12-14 06:11:30,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:11:30,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:11:30,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:11:30,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:11:30,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:11:30,777 INFO L87 Difference]: Start difference. First operand 55837 states and 74857 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (54), 4 states have call predecessors, (54), 3 states have call successors, (54) [2022-12-14 06:11:36,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:11:36,646 INFO L93 Difference]: Finished difference Result 120935 states and 162061 transitions. [2022-12-14 06:11:36,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:11:36,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (54), 4 states have call predecessors, (54), 3 states have call successors, (54) Word has length 508 [2022-12-14 06:11:36,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:11:36,813 INFO L225 Difference]: With dead ends: 120935 [2022-12-14 06:11:36,814 INFO L226 Difference]: Without dead ends: 65354 [2022-12-14 06:11:36,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:11:36,896 INFO L413 NwaCegarLoop]: 1452 mSDtfsCounter, 678 mSDsluCounter, 3758 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 5210 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:11:36,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 5210 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 06:11:36,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65354 states. [2022-12-14 06:11:39,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65354 to 65116. [2022-12-14 06:11:39,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65116 states, 44100 states have (on average 1.3301133786848072) internal successors, (58658), 44589 states have internal predecessors, (58658), 14201 states have call successors, (14201), 6657 states have call predecessors, (14201), 6813 states have return successors, (14379), 13995 states have call predecessors, (14379), 14201 states have call successors, (14379) [2022-12-14 06:11:40,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65116 states to 65116 states and 87238 transitions. [2022-12-14 06:11:40,103 INFO L78 Accepts]: Start accepts. Automaton has 65116 states and 87238 transitions. Word has length 508 [2022-12-14 06:11:40,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:11:40,104 INFO L495 AbstractCegarLoop]: Abstraction has 65116 states and 87238 transitions. [2022-12-14 06:11:40,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (54), 4 states have call predecessors, (54), 3 states have call successors, (54) [2022-12-14 06:11:40,104 INFO L276 IsEmpty]: Start isEmpty. Operand 65116 states and 87238 transitions. [2022-12-14 06:11:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2022-12-14 06:11:40,128 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:11:40,128 INFO L195 NwaCegarLoop]: trace histogram [36, 24, 24, 24, 24, 24, 24, 15, 15, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:11:40,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 06:11:40,128 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:11:40,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:11:40,129 INFO L85 PathProgramCache]: Analyzing trace with hash -256784381, now seen corresponding path program 1 times [2022-12-14 06:11:40,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:11:40,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244751239] [2022-12-14 06:11:40,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:11:40,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:11:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:11:41,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3410 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3406 trivial. 0 not checked. [2022-12-14 06:11:41,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:11:41,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244751239] [2022-12-14 06:11:41,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244751239] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:11:41,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:11:41,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 06:11:41,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623248345] [2022-12-14 06:11:41,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:11:41,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 06:11:41,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:11:41,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 06:11:41,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-12-14 06:11:41,891 INFO L87 Difference]: Start difference. First operand 65116 states and 87238 transitions. Second operand has 13 states, 8 states have (on average 13.875) internal successors, (111), 10 states have internal predecessors, (111), 5 states have call successors, (56), 2 states have call predecessors, (56), 4 states have return successors, (53), 5 states have call predecessors, (53), 5 states have call successors, (53) [2022-12-14 06:11:47,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:11:49,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:11:50,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:11:52,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:11:54,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:11:56,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:11:58,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:12:00,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:12:02,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:12:03,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:12:04,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:12:04,421 INFO L93 Difference]: Finished difference Result 130336 states and 174650 transitions. [2022-12-14 06:12:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 06:12:04,428 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 13.875) internal successors, (111), 10 states have internal predecessors, (111), 5 states have call successors, (56), 2 states have call predecessors, (56), 4 states have return successors, (53), 5 states have call predecessors, (53), 5 states have call successors, (53) Word has length 509 [2022-12-14 06:12:04,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:12:04,602 INFO L225 Difference]: With dead ends: 130336 [2022-12-14 06:12:04,602 INFO L226 Difference]: Without dead ends: 65476 [2022-12-14 06:12:04,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-12-14 06:12:04,707 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 21 mSDsluCounter, 9612 mSDsCounter, 0 mSdLazyCounter, 2093 mSolverCounterSat, 8 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10492 SdHoareTripleChecker+Invalid, 2106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2093 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:12:04,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 10492 Invalid, 2106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2093 Invalid, 5 Unknown, 0 Unchecked, 19.2s Time] [2022-12-14 06:12:04,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65476 states. [2022-12-14 06:12:07,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65476 to 65306. [2022-12-14 06:12:07,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65306 states, 44225 states have (on average 1.3291803278688525) internal successors, (58783), 44719 states have internal predecessors, (58783), 14261 states have call successors, (14261), 6657 states have call predecessors, (14261), 6818 states have return successors, (14444), 14055 states have call predecessors, (14444), 14261 states have call successors, (14444) [2022-12-14 06:12:07,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65306 states to 65306 states and 87488 transitions. [2022-12-14 06:12:08,009 INFO L78 Accepts]: Start accepts. Automaton has 65306 states and 87488 transitions. Word has length 509 [2022-12-14 06:12:08,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:12:08,009 INFO L495 AbstractCegarLoop]: Abstraction has 65306 states and 87488 transitions. [2022-12-14 06:12:08,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 13.875) internal successors, (111), 10 states have internal predecessors, (111), 5 states have call successors, (56), 2 states have call predecessors, (56), 4 states have return successors, (53), 5 states have call predecessors, (53), 5 states have call successors, (53) [2022-12-14 06:12:08,010 INFO L276 IsEmpty]: Start isEmpty. Operand 65306 states and 87488 transitions. [2022-12-14 06:12:08,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-12-14 06:12:08,037 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:12:08,037 INFO L195 NwaCegarLoop]: trace histogram [37, 25, 25, 25, 25, 25, 25, 15, 15, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:12:08,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 06:12:08,037 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:12:08,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:12:08,038 INFO L85 PathProgramCache]: Analyzing trace with hash -149927085, now seen corresponding path program 1 times [2022-12-14 06:12:08,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:12:08,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338108181] [2022-12-14 06:12:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:12:08,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:12:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:12:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3626 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3622 trivial. 0 not checked. [2022-12-14 06:12:09,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:12:09,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338108181] [2022-12-14 06:12:09,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338108181] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:12:09,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:12:09,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 06:12:09,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837541971] [2022-12-14 06:12:09,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:12:09,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 06:12:09,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:12:09,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 06:12:09,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-12-14 06:12:09,508 INFO L87 Difference]: Start difference. First operand 65306 states and 87488 transitions. Second operand has 13 states, 8 states have (on average 14.125) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (54), 6 states have call predecessors, (54), 5 states have call successors, (54) [2022-12-14 06:12:15,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:12:18,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:12:20,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:12:21,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:12:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:12:23,222 INFO L93 Difference]: Finished difference Result 130766 states and 175200 transitions. [2022-12-14 06:12:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 06:12:23,227 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 14.125) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (54), 6 states have call predecessors, (54), 5 states have call successors, (54) Word has length 520 [2022-12-14 06:12:23,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:12:23,382 INFO L225 Difference]: With dead ends: 130766 [2022-12-14 06:12:23,382 INFO L226 Difference]: Without dead ends: 65716 [2022-12-14 06:12:23,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-12-14 06:12:23,478 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 119 mSDsluCounter, 9605 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 10496 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:12:23,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 10496 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2099 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2022-12-14 06:12:23,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65716 states. [2022-12-14 06:12:26,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65716 to 65246. [2022-12-14 06:12:26,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65246 states, 44195 states have (on average 1.3294037787079986) internal successors, (58753), 44689 states have internal predecessors, (58753), 14231 states have call successors, (14231), 6657 states have call predecessors, (14231), 6818 states have return successors, (14414), 14025 states have call predecessors, (14414), 14231 states have call successors, (14414) [2022-12-14 06:12:26,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65246 states to 65246 states and 87398 transitions. [2022-12-14 06:12:26,838 INFO L78 Accepts]: Start accepts. Automaton has 65246 states and 87398 transitions. Word has length 520 [2022-12-14 06:12:26,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:12:26,839 INFO L495 AbstractCegarLoop]: Abstraction has 65246 states and 87398 transitions. [2022-12-14 06:12:26,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 14.125) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (54), 6 states have call predecessors, (54), 5 states have call successors, (54) [2022-12-14 06:12:26,839 INFO L276 IsEmpty]: Start isEmpty. Operand 65246 states and 87398 transitions. [2022-12-14 06:12:26,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2022-12-14 06:12:26,866 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:12:26,867 INFO L195 NwaCegarLoop]: trace histogram [36, 24, 24, 24, 24, 24, 24, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:12:26,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 06:12:26,867 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:12:26,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:12:26,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1079913638, now seen corresponding path program 1 times [2022-12-14 06:12:26,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:12:26,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045731698] [2022-12-14 06:12:26,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:12:26,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:12:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:12:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3396 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 3352 trivial. 0 not checked. [2022-12-14 06:12:27,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:12:27,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045731698] [2022-12-14 06:12:27,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045731698] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:12:27,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:12:27,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:12:27,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706100805] [2022-12-14 06:12:27,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:12:27,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:12:27,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:12:27,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:12:27,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:12:27,109 INFO L87 Difference]: Start difference. First operand 65246 states and 87398 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2022-12-14 06:12:33,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:12:35,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:12:37,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:12:39,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:12:39,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:12:39,674 INFO L93 Difference]: Finished difference Result 141963 states and 190233 transitions. [2022-12-14 06:12:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:12:39,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 517 [2022-12-14 06:12:39,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:12:39,872 INFO L225 Difference]: With dead ends: 141963 [2022-12-14 06:12:39,872 INFO L226 Difference]: Without dead ends: 76973 [2022-12-14 06:12:39,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:12:39,970 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 833 mSDsluCounter, 4038 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 5630 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:12:39,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 5630 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1077 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2022-12-14 06:12:40,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76973 states. [2022-12-14 06:12:43,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76973 to 76773. [2022-12-14 06:12:43,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76773 states, 52034 states have (on average 1.330860591151939) internal successors, (69250), 52621 states have internal predecessors, (69250), 16702 states have call successors, (16702), 7819 states have call predecessors, (16702), 8035 states have return successors, (16942), 16476 states have call predecessors, (16942), 16702 states have call successors, (16942) [2022-12-14 06:12:43,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76773 states to 76773 states and 102894 transitions. [2022-12-14 06:12:43,865 INFO L78 Accepts]: Start accepts. Automaton has 76773 states and 102894 transitions. Word has length 517 [2022-12-14 06:12:43,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:12:43,866 INFO L495 AbstractCegarLoop]: Abstraction has 76773 states and 102894 transitions. [2022-12-14 06:12:43,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2022-12-14 06:12:43,866 INFO L276 IsEmpty]: Start isEmpty. Operand 76773 states and 102894 transitions. [2022-12-14 06:12:43,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-12-14 06:12:43,897 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:12:43,898 INFO L195 NwaCegarLoop]: trace histogram [36, 24, 24, 24, 24, 24, 24, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:12:43,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-14 06:12:43,898 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:12:43,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:12:43,899 INFO L85 PathProgramCache]: Analyzing trace with hash -797734925, now seen corresponding path program 1 times [2022-12-14 06:12:43,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:12:43,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826421700] [2022-12-14 06:12:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:12:43,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:12:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:12:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3396 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3396 trivial. 0 not checked. [2022-12-14 06:12:44,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:12:44,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826421700] [2022-12-14 06:12:44,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826421700] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:12:44,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:12:44,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:12:44,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397922509] [2022-12-14 06:12:44,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:12:44,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:12:44,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:12:44,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:12:44,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:12:44,584 INFO L87 Difference]: Start difference. First operand 76773 states and 102894 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-12-14 06:12:49,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:12:50,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:12:50,453 INFO L93 Difference]: Finished difference Result 76773 states and 102894 transitions. [2022-12-14 06:12:50,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:12:50,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 518 [2022-12-14 06:12:50,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:12:50,685 INFO L225 Difference]: With dead ends: 76773 [2022-12-14 06:12:50,685 INFO L226 Difference]: Without dead ends: 76771 [2022-12-14 06:12:50,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:12:50,713 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 842 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:12:50,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 2770 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 06:12:50,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76771 states. [2022-12-14 06:12:54,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76771 to 76771. [2022-12-14 06:12:54,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76771 states, 52033 states have (on average 1.329118059692887) internal successors, (69158), 52619 states have internal predecessors, (69158), 16702 states have call successors, (16702), 7819 states have call predecessors, (16702), 8035 states have return successors, (16942), 16476 states have call predecessors, (16942), 16702 states have call successors, (16942) [2022-12-14 06:12:55,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76771 states to 76771 states and 102802 transitions. [2022-12-14 06:12:55,091 INFO L78 Accepts]: Start accepts. Automaton has 76771 states and 102802 transitions. Word has length 518 [2022-12-14 06:12:55,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:12:55,092 INFO L495 AbstractCegarLoop]: Abstraction has 76771 states and 102802 transitions. [2022-12-14 06:12:55,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-12-14 06:12:55,092 INFO L276 IsEmpty]: Start isEmpty. Operand 76771 states and 102802 transitions. [2022-12-14 06:12:55,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2022-12-14 06:12:55,129 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:12:55,130 INFO L195 NwaCegarLoop]: trace histogram [36, 24, 24, 24, 24, 24, 24, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:12:55,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-14 06:12:55,130 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:12:55,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:12:55,130 INFO L85 PathProgramCache]: Analyzing trace with hash -853467970, now seen corresponding path program 1 times [2022-12-14 06:12:55,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:12:55,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365060985] [2022-12-14 06:12:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:12:55,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:12:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:12:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3408 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 3374 trivial. 0 not checked. [2022-12-14 06:12:55,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:12:55,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365060985] [2022-12-14 06:12:55,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365060985] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:12:55,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:12:55,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:12:55,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935149150] [2022-12-14 06:12:55,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:12:55,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:12:55,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:12:55,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:12:55,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:12:55,592 INFO L87 Difference]: Start difference. First operand 76771 states and 102802 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-12-14 06:13:04,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:13:06,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:13:07,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:13:07,207 INFO L93 Difference]: Finished difference Result 222455 states and 297800 transitions. [2022-12-14 06:13:07,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:13:07,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 534 [2022-12-14 06:13:07,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:13:07,657 INFO L225 Difference]: With dead ends: 222455 [2022-12-14 06:13:07,657 INFO L226 Difference]: Without dead ends: 145940 [2022-12-14 06:13:07,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:13:07,775 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 921 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-14 06:13:07,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 2531 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 478 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-12-14 06:13:07,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145940 states. [2022-12-14 06:13:15,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145940 to 145902. [2022-12-14 06:13:15,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145902 states, 100179 states have (on average 1.32845207079328) internal successors, (133083), 100939 states have internal predecessors, (133083), 30323 states have call successors, (30323), 14973 states have call predecessors, (30323), 15399 states have return successors, (30821), 30277 states have call predecessors, (30821), 30323 states have call successors, (30821) [2022-12-14 06:13:15,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145902 states to 145902 states and 194227 transitions. [2022-12-14 06:13:15,632 INFO L78 Accepts]: Start accepts. Automaton has 145902 states and 194227 transitions. Word has length 534 [2022-12-14 06:13:15,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:13:15,633 INFO L495 AbstractCegarLoop]: Abstraction has 145902 states and 194227 transitions. [2022-12-14 06:13:15,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2022-12-14 06:13:15,633 INFO L276 IsEmpty]: Start isEmpty. Operand 145902 states and 194227 transitions. [2022-12-14 06:13:15,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2022-12-14 06:13:15,686 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:13:15,686 INFO L195 NwaCegarLoop]: trace histogram [38, 24, 24, 24, 24, 24, 24, 16, 16, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:13:15,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-14 06:13:15,687 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:13:15,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:13:15,687 INFO L85 PathProgramCache]: Analyzing trace with hash 602072828, now seen corresponding path program 1 times [2022-12-14 06:13:15,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:13:15,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100264950] [2022-12-14 06:13:15,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:13:15,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:13:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:13:16,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3632 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3632 trivial. 0 not checked. [2022-12-14 06:13:16,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:13:16,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100264950] [2022-12-14 06:13:16,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100264950] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:13:16,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:13:16,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:13:16,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020557111] [2022-12-14 06:13:16,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:13:16,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:13:16,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:13:16,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:13:16,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:13:16,204 INFO L87 Difference]: Start difference. First operand 145902 states and 194227 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (61), 3 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 1 states have call successors, (58) [2022-12-14 06:13:23,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:13:26,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:13:27,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:13:27,116 INFO L93 Difference]: Finished difference Result 145902 states and 194227 transitions. [2022-12-14 06:13:27,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:13:27,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (61), 3 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 1 states have call successors, (58) Word has length 555 [2022-12-14 06:13:27,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:13:27,131 INFO L225 Difference]: With dead ends: 145902 [2022-12-14 06:13:27,132 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 06:13:27,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:13:27,290 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 108 mSDsluCounter, 2650 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:13:27,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 3562 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 632 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-12-14 06:13:27,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 06:13:27,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 06:13:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:13:27,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 06:13:27,299 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 555 [2022-12-14 06:13:27,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:13:27,299 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 06:13:27,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (61), 3 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 1 states have call successors, (58) [2022-12-14 06:13:27,299 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 06:13:27,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 06:13:27,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-14 06:13:27,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-12-14 06:13:27,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-12-14 06:13:27,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-14 06:13:27,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 06:13:39,203 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:13:44,762 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:13:49,841 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:13:57,153 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:14:02,193 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:14:08,967 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:14:14,165 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:14:19,222 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:14:24,408 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:14:29,462 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:14:35,156 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:14:44,881 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:14:53,870 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:14:59,761 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:15:05,593 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:15:14,649 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:15:27,720 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:15:37,999 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:15:43,586 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:15:49,138 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:15:54,515 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:15:59,711 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:16:04,821 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:16:12,033 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:16:20,351 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 568 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:16:40,929 WARN L233 SmtUtils]: Spent 17.24s on a formula simplification. DAG size of input: 84 DAG size of output: 78 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:16:46,107 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:16:54,175 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:17:01,961 WARN L233 SmtUtils]: Spent 6.23s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:17:13,253 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:17:19,232 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:17:31,624 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:17:38,175 WARN L233 SmtUtils]: Spent 6.45s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:17:43,245 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:18:01,230 WARN L233 SmtUtils]: Spent 17.14s on a formula simplification. DAG size of input: 84 DAG size of output: 78 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:18:07,130 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:18:12,885 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:18:18,334 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:18:25,222 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:18:33,167 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:18:38,227 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:18:44,307 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:18:51,048 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:18:58,261 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:19:03,308 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:19:12,262 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:19:17,679 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:19:24,041 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:19:29,097 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:19:34,939 WARN L233 SmtUtils]: Spent 5.16s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:19:40,475 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:19:47,615 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:19:56,034 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:20:04,519 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:20:09,864 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:20:16,025 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:20:21,412 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:20:26,626 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:20:34,101 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:20:39,678 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:20:45,015 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:20:50,354 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 06:20:56,147 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)