./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur --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 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b --- 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-38b53e6 [2022-11-26 00:28:08,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:28:08,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:28:08,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:28:08,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:28:08,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:28:08,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:28:08,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:28:08,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:28:08,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:28:08,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:28:08,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:28:08,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:28:08,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:28:08,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:28:08,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:28:08,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:28:08,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:28:08,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:28:08,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:28:08,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:28:08,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:28:08,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:28:08,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:28:08,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:28:08,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:28:08,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:28:08,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:28:08,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:28:08,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:28:08,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:28:08,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:28:08,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:28:08,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:28:08,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:28:08,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:28:08,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:28:08,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:28:08,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:28:08,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:28:08,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:28:08,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:28:08,478 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:28:08,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:28:08,479 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:28:08,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:28:08,480 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:28:08,480 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:28:08,480 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:28:08,480 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:28:08,481 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:28:08,481 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:28:08,481 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:28:08,481 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:28:08,481 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:28:08,482 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:28:08,482 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:28:08,482 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:28:08,482 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:28:08,483 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:28:08,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:28:08,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:28:08,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:28:08,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:28:08,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:28:08,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:28:08,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:28:08,485 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:28:08,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:28:08,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:28:08,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:28:08,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:28:08,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:28:08,487 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:28:08,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:28:08,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:28:08,487 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:28:08,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:28:08,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:28:08,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:28:08,488 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_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b [2022-11-26 00:28:08,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:28:08,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:28:08,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:28:08,903 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:28:08,904 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:28:08,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2022-11-26 00:28:12,071 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:28:12,852 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:28:12,853 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6137087-4a74-45df-97b3-b4a582ccdef8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2022-11-26 00:28:12,916 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur/data/f9430d2f8/4ad4f1e3517c428db54de2d528b6f26d/FLAG6d2cdbc58 [2022-11-26 00:28:12,937 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur/data/f9430d2f8/4ad4f1e3517c428db54de2d528b6f26d [2022-11-26 00:28:12,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:28:12,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:28:12,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:28:12,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:28:12,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:28:12,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:28:12" (1/1) ... [2022-11-26 00:28:12,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24249837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:12, skipping insertion in model container [2022-11-26 00:28:12,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:28:12" (1/1) ... [2022-11-26 00:28:12,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:28:13,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:28:14,121 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-11-26 00:28:14,229 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-11-26 00:28:14,290 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-11-26 00:28:14,291 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-26 00:28:14,302 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-26 00:28:14,307 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 00:28:14,436 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-11-26 00:28:14,603 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 00:28:14,605 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-26 00:28:14,614 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 00:28:14,637 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 00:28:14,670 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-11-26 00:28:14,671 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-11-26 00:28:14,681 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 00:28:14,682 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_config [2022-11-26 00:28:14,684 WARN L623 FunctionHandler]: Unknown extern function pcmcia_enable_device [2022-11-26 00:28:14,685 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 00:28:14,686 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 00:28:14,694 WARN L623 FunctionHandler]: Unknown extern function pcmcia_write_config_byte [2022-11-26 00:28:14,697 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 00:28:14,698 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:28:14,700 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:28:14,701 WARN L623 FunctionHandler]: Unknown extern function netdev_notice [2022-11-26 00:28:14,703 WARN L623 FunctionHandler]: Unknown extern function pcmcia_disable_device [2022-11-26 00:28:14,708 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-26 00:28:14,714 WARN L623 FunctionHandler]: Unknown extern function pcmcia_write_config_byte [2022-11-26 00:28:14,715 WARN L623 FunctionHandler]: Unknown extern function netif_device_attach [2022-11-26 00:28:14,729 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 00:28:14,730 WARN L623 FunctionHandler]: Unknown extern function pcmcia_dev_present [2022-11-26 00:28:14,732 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-11-26 00:28:14,734 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-26 00:28:14,737 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 00:28:14,741 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 00:28:14,742 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:28:14,747 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:28:14,748 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-26 00:28:14,750 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:28:14,751 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:28:14,753 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:28:14,755 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:28:14,756 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-26 00:28:14,764 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:28:14,768 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-11-26 00:28:14,822 WARN L623 FunctionHandler]: Unknown extern function dev_trans_start [2022-11-26 00:28:14,825 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:28:14,834 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:28:14,837 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:28:14,840 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:28:14,845 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-26 00:28:14,849 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:28:14,851 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:28:14,853 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-26 00:28:14,859 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-26 00:28:14,860 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-26 00:28:14,871 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:28:14,877 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:28:14,887 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:28:14,902 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:28:14,903 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:28:14,904 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-26 00:28:14,905 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-11-26 00:28:14,919 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-11-26 00:28:14,920 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:28:14,922 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:28:14,927 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:28:14,932 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 00:28:14,933 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 00:28:14,955 WARN L623 FunctionHandler]: Unknown extern function crc32_le [2022-11-26 00:28:14,957 WARN L623 FunctionHandler]: Unknown extern function bitrev32 [2022-11-26 00:28:14,967 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:28:14,975 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-26 00:28:15,209 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-11-26 00:28:15,210 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-11-26 00:28:15,211 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-11-26 00:28:15,214 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-26 00:28:15,218 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-26 00:28:15,219 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-26 00:28:15,224 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-11-26 00:28:15,235 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-26 00:28:15,236 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-26 00:28:15,238 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-11-26 00:28:15,239 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-26 00:28:15,240 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-26 00:28:15,240 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-11-26 00:28:15,242 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-26 00:28:15,280 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-26 00:28:15,281 WARN L623 FunctionHandler]: Unknown extern function pcmcia_register_driver [2022-11-26 00:28:15,282 WARN L623 FunctionHandler]: Unknown extern function pcmcia_unregister_driver [2022-11-26 00:28:15,282 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 00:28:15,283 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 00:28:15,283 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 00:28:15,284 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 00:28:15,284 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 00:28:15,285 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 00:28:15,285 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 00:28:15,285 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 00:28:15,362 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-11-26 00:28:15,362 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-11-26 00:28:15,371 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-11-26 00:28:15,914 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_b6137087-4a74-45df-97b3-b4a582ccdef8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2022-11-26 00:28:15,918 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_b6137087-4a74-45df-97b3-b4a582ccdef8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2022-11-26 00:28:15,919 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_b6137087-4a74-45df-97b3-b4a582ccdef8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2022-11-26 00:28:15,920 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_b6137087-4a74-45df-97b3-b4a582ccdef8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2022-11-26 00:28:15,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:28:16,008 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:28:16,132 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-11-26 00:28:16,135 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-11-26 00:28:16,138 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-11-26 00:28:16,139 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-26 00:28:16,141 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-26 00:28:16,142 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 00:28:16,145 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-11-26 00:28:16,152 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 00:28:16,154 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-26 00:28:16,159 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 00:28:16,163 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 00:28:16,173 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-11-26 00:28:16,174 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-11-26 00:28:16,177 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 00:28:16,178 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_config [2022-11-26 00:28:16,179 WARN L623 FunctionHandler]: Unknown extern function pcmcia_enable_device [2022-11-26 00:28:16,223 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 00:28:16,224 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 00:28:16,229 WARN L623 FunctionHandler]: Unknown extern function pcmcia_write_config_byte [2022-11-26 00:28:16,235 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 00:28:16,236 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:28:16,238 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:28:16,239 WARN L623 FunctionHandler]: Unknown extern function netdev_notice [2022-11-26 00:28:16,240 WARN L623 FunctionHandler]: Unknown extern function pcmcia_disable_device [2022-11-26 00:28:16,241 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-26 00:28:16,242 WARN L623 FunctionHandler]: Unknown extern function pcmcia_write_config_byte [2022-11-26 00:28:16,242 WARN L623 FunctionHandler]: Unknown extern function netif_device_attach [2022-11-26 00:28:16,250 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 00:28:16,251 WARN L623 FunctionHandler]: Unknown extern function pcmcia_dev_present [2022-11-26 00:28:16,252 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-11-26 00:28:16,253 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-26 00:28:16,256 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 00:28:16,261 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 00:28:16,262 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:28:16,268 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:28:16,271 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-26 00:28:16,272 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:28:16,273 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:28:16,279 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:28:16,281 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:28:16,284 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-26 00:28:16,300 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:28:16,305 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-11-26 00:28:16,330 WARN L623 FunctionHandler]: Unknown extern function dev_trans_start [2022-11-26 00:28:16,332 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:28:16,339 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:28:16,342 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:28:16,345 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:28:16,353 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-26 00:28:16,356 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:28:16,363 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:28:16,364 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-26 00:28:16,378 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-26 00:28:16,378 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-26 00:28:16,382 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:28:16,384 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:28:16,389 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:28:16,391 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:28:16,393 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:28:16,393 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-26 00:28:16,394 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-11-26 00:28:16,395 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-11-26 00:28:16,396 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:28:16,397 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:28:16,400 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:28:16,401 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 00:28:16,401 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 00:28:16,406 WARN L623 FunctionHandler]: Unknown extern function crc32_le [2022-11-26 00:28:16,407 WARN L623 FunctionHandler]: Unknown extern function bitrev32 [2022-11-26 00:28:16,417 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:28:16,420 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-26 00:28:16,430 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-11-26 00:28:16,433 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-11-26 00:28:16,433 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-11-26 00:28:16,438 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-26 00:28:16,441 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-26 00:28:16,442 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-26 00:28:16,446 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-11-26 00:28:16,488 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-26 00:28:16,489 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-26 00:28:16,495 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-11-26 00:28:16,496 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-26 00:28:16,496 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-26 00:28:16,497 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-11-26 00:28:16,498 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-26 00:28:16,499 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-26 00:28:16,500 WARN L623 FunctionHandler]: Unknown extern function pcmcia_register_driver [2022-11-26 00:28:16,501 WARN L623 FunctionHandler]: Unknown extern function pcmcia_unregister_driver [2022-11-26 00:28:16,501 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 00:28:16,502 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 00:28:16,502 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 00:28:16,503 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 00:28:16,504 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 00:28:16,505 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 00:28:16,505 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 00:28:16,506 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 00:28:16,510 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-11-26 00:28:16,510 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-11-26 00:28:16,511 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-11-26 00:28:16,544 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_b6137087-4a74-45df-97b3-b4a582ccdef8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2022-11-26 00:28:16,545 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_b6137087-4a74-45df-97b3-b4a582ccdef8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2022-11-26 00:28:16,546 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_b6137087-4a74-45df-97b3-b4a582ccdef8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2022-11-26 00:28:16,547 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_b6137087-4a74-45df-97b3-b4a582ccdef8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2022-11-26 00:28:16,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:28:16,723 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:28:16,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:16 WrapperNode [2022-11-26 00:28:16,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:28:16,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:28:16,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:28:16,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:28:16,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:16" (1/1) ... [2022-11-26 00:28:16,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:16" (1/1) ... [2022-11-26 00:28:17,013 INFO L138 Inliner]: procedures = 370, calls = 2251, calls flagged for inlining = 172, calls inlined = 152, statements flattened = 4153 [2022-11-26 00:28:17,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:28:17,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:28:17,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:28:17,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:28:17,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:16" (1/1) ... [2022-11-26 00:28:17,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:16" (1/1) ... [2022-11-26 00:28:17,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:16" (1/1) ... [2022-11-26 00:28:17,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:16" (1/1) ... [2022-11-26 00:28:17,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:16" (1/1) ... [2022-11-26 00:28:17,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:16" (1/1) ... [2022-11-26 00:28:17,275 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:16" (1/1) ... [2022-11-26 00:28:17,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:16" (1/1) ... [2022-11-26 00:28:17,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:28:17,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:28:17,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:28:17,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:28:17,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:16" (1/1) ... [2022-11-26 00:28:17,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:28:17,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:28:17,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:28:17,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:28:17,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_page_lock_of_ei_device [2022-11-26 00:28:17,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_page_lock_of_ei_device [2022-11-26 00:28:17,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-26 00:28:17,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-26 00:28:17,423 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_detach [2022-11-26 00:28:17,423 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_detach [2022-11-26 00:28:17,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-26 00:28:17,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-26 00:28:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-26 00:28:17,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-26 00:28:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-26 00:28:17,424 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-26 00:28:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure AX88190_init [2022-11-26 00:28:17,425 INFO L138 BoogieDeclarations]: Found implementation of procedure AX88190_init [2022-11-26 00:28:17,425 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-26 00:28:17,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-26 00:28:17,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-26 00:28:17,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-26 00:28:17,425 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2022-11-26 00:28:17,425 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2022-11-26 00:28:17,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-26 00:28:17,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-26 00:28:17,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_70 [2022-11-26 00:28:17,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_70 [2022-11-26 00:28:17,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-26 00:28:17,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-26 00:28:17,426 INFO L130 BoogieDeclarations]: Found specification of procedure ei_receive [2022-11-26 00:28:17,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_receive [2022-11-26 00:28:17,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-26 00:28:17,427 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-26 00:28:17,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_axnet_cs_driver_exit_14_2 [2022-11-26 00:28:17,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_axnet_cs_driver_exit_14_2 [2022-11-26 00:28:17,427 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-26 00:28:17,428 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-26 00:28:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_release [2022-11-26 00:28:17,432 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_release [2022-11-26 00:28:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_write_config_byte [2022-11-26 00:28:17,433 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_write_config_byte [2022-11-26 00:28:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure insw [2022-11-26 00:28:17,433 INFO L138 BoogieDeclarations]: Found implementation of procedure insw [2022-11-26 00:28:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure PRIV [2022-11-26 00:28:17,434 INFO L138 BoogieDeclarations]: Found implementation of procedure PRIV [2022-11-26 00:28:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-26 00:28:17,436 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-26 00:28:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:28:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-26 00:28:17,437 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-26 00:28:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:28:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-26 00:28:17,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-26 00:28:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-26 00:28:17,437 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-26 00:28:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2022-11-26 00:28:17,438 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2022-11-26 00:28:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-26 00:28:17,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-26 00:28:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure NS8390_trigger_send [2022-11-26 00:28:17,438 INFO L138 BoogieDeclarations]: Found implementation of procedure NS8390_trigger_send [2022-11-26 00:28:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure ei_tx_intr [2022-11-26 00:28:17,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_tx_intr [2022-11-26 00:28:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:28:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-26 00:28:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-26 00:28:17,439 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-26 00:28:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-26 00:28:17,439 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-26 00:28:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-26 00:28:17,439 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-26 00:28:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-26 00:28:17,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-26 00:28:17,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-26 00:28:17,440 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2022-11-26 00:28:17,440 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2022-11-26 00:28:17,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-26 00:28:17,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-26 00:28:17,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-26 00:28:17,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:28:17,440 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-26 00:28:17,440 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-26 00:28:17,441 INFO L130 BoogieDeclarations]: Found specification of procedure ei_irq_wrapper [2022-11-26 00:28:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_irq_wrapper [2022-11-26 00:28:17,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-26 00:28:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-26 00:28:17,441 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-26 00:28:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-26 00:28:17,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-26 00:28:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-26 00:28:17,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:28:17,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-26 00:28:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-26 00:28:17,442 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_reset_8390 [2022-11-26 00:28:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_reset_8390 [2022-11-26 00:28:17,442 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_tx_timeout [2022-11-26 00:28:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_tx_timeout [2022-11-26 00:28:17,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-26 00:28:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-26 00:28:17,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:28:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-11-26 00:28:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-11-26 00:28:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-26 00:28:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-26 00:28:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_cs_driver_exit [2022-11-26 00:28:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_cs_driver_exit [2022-11-26 00:28:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:28:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-26 00:28:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-26 00:28:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-26 00:28:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-26 00:28:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 00:28:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-26 00:28:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-26 00:28:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-26 00:28:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-26 00:28:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-26 00:28:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-26 00:28:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2022-11-26 00:28:17,445 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2022-11-26 00:28:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-26 00:28:17,445 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-26 00:28:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure do_set_multicast_list [2022-11-26 00:28:17,446 INFO L138 BoogieDeclarations]: Found implementation of procedure do_set_multicast_list [2022-11-26 00:28:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:28:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-26 00:28:17,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-26 00:28:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-26 00:28:17,446 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-26 00:28:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:28:17,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:28:18,242 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:28:18,245 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:28:18,688 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-26 00:28:25,236 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-26 00:28:25,383 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:28:26,389 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:28:26,389 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:28:26,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:28:26 BoogieIcfgContainer [2022-11-26 00:28:26,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:28:26,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:28:26,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:28:26,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:28:26,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:28:12" (1/3) ... [2022-11-26 00:28:26,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56745e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:28:26, skipping insertion in model container [2022-11-26 00:28:26,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:16" (2/3) ... [2022-11-26 00:28:26,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56745e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:28:26, skipping insertion in model container [2022-11-26 00:28:26,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:28:26" (3/3) ... [2022-11-26 00:28:26,409 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2022-11-26 00:28:26,431 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:28:26,431 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-26 00:28:26,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:28:26,517 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;@17001df6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:28:26,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-26 00:28:26,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 953 states, 528 states have (on average 1.303030303030303) internal successors, (688), 552 states have internal predecessors, (688), 368 states have call successors, (368), 56 states have call predecessors, (368), 55 states have return successors, (362), 354 states have call predecessors, (362), 362 states have call successors, (362) [2022-11-26 00:28:26,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-26 00:28:26,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:26,563 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:26,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:28:26,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:26,575 INFO L85 PathProgramCache]: Analyzing trace with hash -407081453, now seen corresponding path program 1 times [2022-11-26 00:28:26,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:26,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610163170] [2022-11-26 00:28:26,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:26,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:27,495 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-26 00:28:27,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:27,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610163170] [2022-11-26 00:28:27,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610163170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:27,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:27,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:28:27,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752099354] [2022-11-26 00:28:27,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:27,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:27,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:27,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:27,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:27,563 INFO L87 Difference]: Start difference. First operand has 953 states, 528 states have (on average 1.303030303030303) internal successors, (688), 552 states have internal predecessors, (688), 368 states have call successors, (368), 56 states have call predecessors, (368), 55 states have return successors, (362), 354 states have call predecessors, (362), 362 states have call successors, (362) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-26 00:28:30,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:30,837 INFO L93 Difference]: Finished difference Result 2749 states and 4166 transitions. [2022-11-26 00:28:30,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:30,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2022-11-26 00:28:30,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:30,868 INFO L225 Difference]: With dead ends: 2749 [2022-11-26 00:28:30,868 INFO L226 Difference]: Without dead ends: 1801 [2022-11-26 00:28:30,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:30,883 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 1301 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:30,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 2732 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-26 00:28:30,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2022-11-26 00:28:31,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1797. [2022-11-26 00:28:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1005 states have (on average 1.2935323383084578) internal successors, (1300), 1050 states have internal predecessors, (1300), 683 states have call successors, (683), 107 states have call predecessors, (683), 106 states have return successors, (679), 663 states have call predecessors, (679), 679 states have call successors, (679) [2022-11-26 00:28:31,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2662 transitions. [2022-11-26 00:28:31,121 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2662 transitions. Word has length 91 [2022-11-26 00:28:31,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:31,122 INFO L495 AbstractCegarLoop]: Abstraction has 1797 states and 2662 transitions. [2022-11-26 00:28:31,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-26 00:28:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2662 transitions. [2022-11-26 00:28:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-26 00:28:31,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:31,136 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:31,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:28:31,137 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:28:31,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:31,137 INFO L85 PathProgramCache]: Analyzing trace with hash -864878540, now seen corresponding path program 1 times [2022-11-26 00:28:31,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:31,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364825536] [2022-11-26 00:28:31,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:31,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-26 00:28:31,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:31,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364825536] [2022-11-26 00:28:31,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364825536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:31,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:31,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:28:31,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575739421] [2022-11-26 00:28:31,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:31,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:31,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:31,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:31,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:31,582 INFO L87 Difference]: Start difference. First operand 1797 states and 2662 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-26 00:28:34,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:34,572 INFO L93 Difference]: Finished difference Result 5055 states and 7458 transitions. [2022-11-26 00:28:34,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:34,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-11-26 00:28:34,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:34,610 INFO L225 Difference]: With dead ends: 5055 [2022-11-26 00:28:34,610 INFO L226 Difference]: Without dead ends: 3273 [2022-11-26 00:28:34,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:34,625 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 1115 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:34,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 2720 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-26 00:28:34,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2022-11-26 00:28:34,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 3242. [2022-11-26 00:28:34,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3242 states, 1810 states have (on average 1.2834254143646409) internal successors, (2323), 1892 states have internal predecessors, (2323), 1222 states have call successors, (1222), 206 states have call predecessors, (1222), 207 states have return successors, (1224), 1189 states have call predecessors, (1224), 1218 states have call successors, (1224) [2022-11-26 00:28:34,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3242 states to 3242 states and 4769 transitions. [2022-11-26 00:28:34,970 INFO L78 Accepts]: Start accepts. Automaton has 3242 states and 4769 transitions. Word has length 99 [2022-11-26 00:28:34,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:34,971 INFO L495 AbstractCegarLoop]: Abstraction has 3242 states and 4769 transitions. [2022-11-26 00:28:34,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-26 00:28:34,971 INFO L276 IsEmpty]: Start isEmpty. Operand 3242 states and 4769 transitions. [2022-11-26 00:28:34,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-26 00:28:34,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:34,975 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 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] [2022-11-26 00:28:34,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:28:34,976 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:28:34,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:34,976 INFO L85 PathProgramCache]: Analyzing trace with hash -126244400, now seen corresponding path program 1 times [2022-11-26 00:28:34,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:34,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712893640] [2022-11-26 00:28:34,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:34,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-26 00:28:35,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:35,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712893640] [2022-11-26 00:28:35,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712893640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:35,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:35,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:28:35,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041211891] [2022-11-26 00:28:35,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:35,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:35,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:35,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:35,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:35,464 INFO L87 Difference]: Start difference. First operand 3242 states and 4769 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-26 00:28:38,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:38,627 INFO L93 Difference]: Finished difference Result 8940 states and 13097 transitions. [2022-11-26 00:28:38,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:38,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 103 [2022-11-26 00:28:38,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:38,676 INFO L225 Difference]: With dead ends: 8940 [2022-11-26 00:28:38,676 INFO L226 Difference]: Without dead ends: 5713 [2022-11-26 00:28:38,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:38,702 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 1114 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:38,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 2684 Invalid, 383 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-26 00:28:38,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5713 states. [2022-11-26 00:28:39,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5713 to 5680. [2022-11-26 00:28:39,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5680 states, 3184 states have (on average 1.2792085427135678) internal successors, (4073), 3322 states have internal predecessors, (4073), 2108 states have call successors, (2108), 388 states have call predecessors, (2108), 385 states have return successors, (2116), 2035 states have call predecessors, (2116), 2104 states have call successors, (2116) [2022-11-26 00:28:39,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5680 states to 5680 states and 8297 transitions. [2022-11-26 00:28:39,225 INFO L78 Accepts]: Start accepts. Automaton has 5680 states and 8297 transitions. Word has length 103 [2022-11-26 00:28:39,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:39,225 INFO L495 AbstractCegarLoop]: Abstraction has 5680 states and 8297 transitions. [2022-11-26 00:28:39,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-26 00:28:39,226 INFO L276 IsEmpty]: Start isEmpty. Operand 5680 states and 8297 transitions. [2022-11-26 00:28:39,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-26 00:28:39,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:39,229 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:39,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:28:39,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:28:39,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:39,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1612790898, now seen corresponding path program 1 times [2022-11-26 00:28:39,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:39,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215295501] [2022-11-26 00:28:39,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:39,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:39,599 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-26 00:28:39,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:39,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215295501] [2022-11-26 00:28:39,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215295501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:39,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:39,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:28:39,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091796420] [2022-11-26 00:28:39,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:39,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:39,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:39,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:39,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:39,603 INFO L87 Difference]: Start difference. First operand 5680 states and 8297 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-26 00:28:42,541 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 [] [2022-11-26 00:28:42,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:42,881 INFO L93 Difference]: Finished difference Result 10086 states and 14720 transitions. [2022-11-26 00:28:42,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:42,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 118 [2022-11-26 00:28:42,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:42,915 INFO L225 Difference]: With dead ends: 10086 [2022-11-26 00:28:42,915 INFO L226 Difference]: Without dead ends: 4421 [2022-11-26 00:28:42,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:42,953 INFO L413 NwaCegarLoop]: 1651 mSDtfsCounter, 1260 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 2279 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:42,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 2279 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-26 00:28:42,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2022-11-26 00:28:43,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 4382. [2022-11-26 00:28:43,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 2512 states have (on average 1.273487261146497) internal successors, (3199), 2656 states have internal predecessors, (3199), 1551 states have call successors, (1551), 355 states have call predecessors, (1551), 316 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-11-26 00:28:43,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 6333 transitions. [2022-11-26 00:28:43,365 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 6333 transitions. Word has length 118 [2022-11-26 00:28:43,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:43,366 INFO L495 AbstractCegarLoop]: Abstraction has 4382 states and 6333 transitions. [2022-11-26 00:28:43,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-26 00:28:43,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 6333 transitions. [2022-11-26 00:28:43,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-26 00:28:43,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:43,369 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 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] [2022-11-26 00:28:43,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:28:43,369 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:28:43,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:43,370 INFO L85 PathProgramCache]: Analyzing trace with hash -2099420447, now seen corresponding path program 1 times [2022-11-26 00:28:43,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:43,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850823594] [2022-11-26 00:28:43,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:43,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:44,080 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-11-26 00:28:44,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:44,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850823594] [2022-11-26 00:28:44,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850823594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:44,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:44,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:44,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361445596] [2022-11-26 00:28:44,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:44,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:44,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:44,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:44,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:44,084 INFO L87 Difference]: Start difference. First operand 4382 states and 6333 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-26 00:28:47,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:47,191 INFO L93 Difference]: Finished difference Result 4388 states and 6338 transitions. [2022-11-26 00:28:47,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:28:47,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2022-11-26 00:28:47,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:47,223 INFO L225 Difference]: With dead ends: 4388 [2022-11-26 00:28:47,224 INFO L226 Difference]: Without dead ends: 4386 [2022-11-26 00:28:47,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:47,228 INFO L413 NwaCegarLoop]: 1198 mSDtfsCounter, 1344 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:47,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 3581 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-26 00:28:47,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2022-11-26 00:28:47,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 4386. [2022-11-26 00:28:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 2515 states have (on average 1.2731610337972168) internal successors, (3202), 2659 states have internal predecessors, (3202), 1551 states have call successors, (1551), 356 states have call predecessors, (1551), 317 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-11-26 00:28:47,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 6336 transitions. [2022-11-26 00:28:47,623 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 6336 transitions. Word has length 133 [2022-11-26 00:28:47,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:47,625 INFO L495 AbstractCegarLoop]: Abstraction has 4386 states and 6336 transitions. [2022-11-26 00:28:47,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-26 00:28:47,626 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 6336 transitions. [2022-11-26 00:28:47,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-26 00:28:47,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:47,633 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 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] [2022-11-26 00:28:47,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:28:47,633 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:28:47,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:47,634 INFO L85 PathProgramCache]: Analyzing trace with hash -53366470, now seen corresponding path program 1 times [2022-11-26 00:28:47,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:47,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649092090] [2022-11-26 00:28:47,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:47,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-11-26 00:28:48,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:48,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649092090] [2022-11-26 00:28:48,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649092090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:48,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:48,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:48,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188832944] [2022-11-26 00:28:48,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:48,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:48,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:48,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:48,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:48,318 INFO L87 Difference]: Start difference. First operand 4386 states and 6336 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-26 00:28:50,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:28:52,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:28:54,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:28:54,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:54,759 INFO L93 Difference]: Finished difference Result 4392 states and 6341 transitions. [2022-11-26 00:28:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:28:54,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2022-11-26 00:28:54,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:54,795 INFO L225 Difference]: With dead ends: 4392 [2022-11-26 00:28:54,796 INFO L226 Difference]: Without dead ends: 4390 [2022-11-26 00:28:54,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:54,801 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1339 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:54,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 576 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-11-26 00:28:54,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4390 states. [2022-11-26 00:28:55,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4390 to 4390. [2022-11-26 00:28:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4390 states, 2518 states have (on average 1.272835583796664) internal successors, (3205), 2662 states have internal predecessors, (3205), 1551 states have call successors, (1551), 357 states have call predecessors, (1551), 318 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-11-26 00:28:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 6339 transitions. [2022-11-26 00:28:55,300 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 6339 transitions. Word has length 138 [2022-11-26 00:28:55,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:55,301 INFO L495 AbstractCegarLoop]: Abstraction has 4390 states and 6339 transitions. [2022-11-26 00:28:55,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-26 00:28:55,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 6339 transitions. [2022-11-26 00:28:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-26 00:28:55,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:55,306 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 3, 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] [2022-11-26 00:28:55,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:28:55,306 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:28:55,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:55,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1297779265, now seen corresponding path program 1 times [2022-11-26 00:28:55,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:55,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657865420] [2022-11-26 00:28:55,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:55,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-11-26 00:28:55,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:55,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657865420] [2022-11-26 00:28:55,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657865420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:55,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:55,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:55,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475070473] [2022-11-26 00:28:55,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:55,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:55,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:55,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:55,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:55,959 INFO L87 Difference]: Start difference. First operand 4390 states and 6339 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-26 00:28:59,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:59,131 INFO L93 Difference]: Finished difference Result 4396 states and 6344 transitions. [2022-11-26 00:28:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:28:59,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 143 [2022-11-26 00:28:59,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:59,177 INFO L225 Difference]: With dead ends: 4396 [2022-11-26 00:28:59,184 INFO L226 Difference]: Without dead ends: 4394 [2022-11-26 00:28:59,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:59,188 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1339 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:59,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-26 00:28:59,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2022-11-26 00:28:59,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 4394. [2022-11-26 00:28:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4394 states, 2521 states have (on average 1.2725109083696946) internal successors, (3208), 2665 states have internal predecessors, (3208), 1551 states have call successors, (1551), 358 states have call predecessors, (1551), 319 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-11-26 00:28:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4394 states to 4394 states and 6342 transitions. [2022-11-26 00:28:59,557 INFO L78 Accepts]: Start accepts. Automaton has 4394 states and 6342 transitions. Word has length 143 [2022-11-26 00:28:59,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:59,559 INFO L495 AbstractCegarLoop]: Abstraction has 4394 states and 6342 transitions. [2022-11-26 00:28:59,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-26 00:28:59,559 INFO L276 IsEmpty]: Start isEmpty. Operand 4394 states and 6342 transitions. [2022-11-26 00:28:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-26 00:28:59,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:59,563 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 5, 5, 4, 3, 3, 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] [2022-11-26 00:28:59,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:28:59,563 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:28:59,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:59,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1251737035, now seen corresponding path program 1 times [2022-11-26 00:28:59,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:59,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086080778] [2022-11-26 00:28:59,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:59,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:00,204 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-11-26 00:29:00,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:00,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086080778] [2022-11-26 00:29:00,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086080778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:00,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:00,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:29:00,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643603873] [2022-11-26 00:29:00,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:00,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:29:00,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:29:00,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:29:00,208 INFO L87 Difference]: Start difference. First operand 4394 states and 6342 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-26 00:29:02,419 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 [] [2022-11-26 00:29:04,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:05,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:05,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:05,651 INFO L93 Difference]: Finished difference Result 4400 states and 6347 transitions. [2022-11-26 00:29:05,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:29:05,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 155 [2022-11-26 00:29:05,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:05,678 INFO L225 Difference]: With dead ends: 4400 [2022-11-26 00:29:05,678 INFO L226 Difference]: Without dead ends: 4398 [2022-11-26 00:29:05,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:29:05,683 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1338 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:05,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-26 00:29:05,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2022-11-26 00:29:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 4398. [2022-11-26 00:29:06,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4398 states, 2524 states have (on average 1.2721870047543582) internal successors, (3211), 2668 states have internal predecessors, (3211), 1551 states have call successors, (1551), 359 states have call predecessors, (1551), 320 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-11-26 00:29:06,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4398 states to 4398 states and 6345 transitions. [2022-11-26 00:29:06,266 INFO L78 Accepts]: Start accepts. Automaton has 4398 states and 6345 transitions. Word has length 155 [2022-11-26 00:29:06,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:06,269 INFO L495 AbstractCegarLoop]: Abstraction has 4398 states and 6345 transitions. [2022-11-26 00:29:06,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-26 00:29:06,269 INFO L276 IsEmpty]: Start isEmpty. Operand 4398 states and 6345 transitions. [2022-11-26 00:29:06,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-26 00:29:06,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:06,274 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:06,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:29:06,274 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:29:06,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:06,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1346686374, now seen corresponding path program 1 times [2022-11-26 00:29:06,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:06,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010600436] [2022-11-26 00:29:06,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:06,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-11-26 00:29:06,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:06,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010600436] [2022-11-26 00:29:06,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010600436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:06,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:06,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:29:06,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075275936] [2022-11-26 00:29:06,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:06,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:29:06,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:29:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:29:06,862 INFO L87 Difference]: Start difference. First operand 4398 states and 6345 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 00:29:10,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:11,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:12,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:12,402 INFO L93 Difference]: Finished difference Result 4404 states and 6350 transitions. [2022-11-26 00:29:12,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:29:12,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 160 [2022-11-26 00:29:12,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:12,427 INFO L225 Difference]: With dead ends: 4404 [2022-11-26 00:29:12,427 INFO L226 Difference]: Without dead ends: 4402 [2022-11-26 00:29:12,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:29:12,430 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1338 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:12,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-26 00:29:12,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4402 states. [2022-11-26 00:29:12,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4402 to 4402. [2022-11-26 00:29:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 2527 states have (on average 1.2718638702018203) internal successors, (3214), 2671 states have internal predecessors, (3214), 1551 states have call successors, (1551), 360 states have call predecessors, (1551), 321 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-11-26 00:29:12,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 6348 transitions. [2022-11-26 00:29:12,826 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 6348 transitions. Word has length 160 [2022-11-26 00:29:12,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:12,828 INFO L495 AbstractCegarLoop]: Abstraction has 4402 states and 6348 transitions. [2022-11-26 00:29:12,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 00:29:12,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 6348 transitions. [2022-11-26 00:29:12,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-26 00:29:12,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:12,833 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:12,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:29:12,834 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:29:12,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:12,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1441032043, now seen corresponding path program 1 times [2022-11-26 00:29:12,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:12,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834697451] [2022-11-26 00:29:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:12,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-11-26 00:29:13,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:13,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834697451] [2022-11-26 00:29:13,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834697451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:13,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:13,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:29:13,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876268729] [2022-11-26 00:29:13,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:13,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:29:13,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:13,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:29:13,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:29:13,577 INFO L87 Difference]: Start difference. First operand 4402 states and 6348 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-26 00:29:16,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:17,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:19,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:19,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:19,810 INFO L93 Difference]: Finished difference Result 4408 states and 6353 transitions. [2022-11-26 00:29:19,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:29:19,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 165 [2022-11-26 00:29:19,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:19,843 INFO L225 Difference]: With dead ends: 4408 [2022-11-26 00:29:19,843 INFO L226 Difference]: Without dead ends: 4406 [2022-11-26 00:29:19,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:29:19,848 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1338 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:19,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 576 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-11-26 00:29:19,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4406 states. [2022-11-26 00:29:20,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4406 to 4406. [2022-11-26 00:29:20,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 2530 states have (on average 1.2715415019762846) internal successors, (3217), 2674 states have internal predecessors, (3217), 1551 states have call successors, (1551), 361 states have call predecessors, (1551), 322 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-11-26 00:29:20,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 6351 transitions. [2022-11-26 00:29:20,363 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 6351 transitions. Word has length 165 [2022-11-26 00:29:20,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:20,364 INFO L495 AbstractCegarLoop]: Abstraction has 4406 states and 6351 transitions. [2022-11-26 00:29:20,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-26 00:29:20,364 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 6351 transitions. [2022-11-26 00:29:20,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-26 00:29:20,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:20,369 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 6, 6, 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] [2022-11-26 00:29:20,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-26 00:29:20,369 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:29:20,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:20,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1063096354, now seen corresponding path program 1 times [2022-11-26 00:29:20,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:20,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613685553] [2022-11-26 00:29:20,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:20,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-26 00:29:20,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:20,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613685553] [2022-11-26 00:29:20,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613685553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:20,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:20,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:29:20,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479783325] [2022-11-26 00:29:20,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:20,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:29:20,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:20,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:29:20,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:29:20,745 INFO L87 Difference]: Start difference. First operand 4406 states and 6351 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-26 00:29:23,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:23,569 INFO L93 Difference]: Finished difference Result 9705 states and 14001 transitions. [2022-11-26 00:29:23,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:29:23,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 165 [2022-11-26 00:29:23,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:23,598 INFO L225 Difference]: With dead ends: 9705 [2022-11-26 00:29:23,598 INFO L226 Difference]: Without dead ends: 5368 [2022-11-26 00:29:23,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:29:23,621 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 466 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:23,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 2768 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-26 00:29:23,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5368 states. [2022-11-26 00:29:24,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5368 to 5313. [2022-11-26 00:29:24,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5313 states, 3075 states have (on average 1.272520325203252) internal successors, (3913), 3265 states have internal predecessors, (3913), 1835 states have call successors, (1835), 472 states have call predecessors, (1835), 400 states have return successors, (1879), 1610 states have call predecessors, (1879), 1831 states have call successors, (1879) [2022-11-26 00:29:24,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5313 states to 5313 states and 7627 transitions. [2022-11-26 00:29:24,143 INFO L78 Accepts]: Start accepts. Automaton has 5313 states and 7627 transitions. Word has length 165 [2022-11-26 00:29:24,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:24,144 INFO L495 AbstractCegarLoop]: Abstraction has 5313 states and 7627 transitions. [2022-11-26 00:29:24,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-26 00:29:24,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5313 states and 7627 transitions. [2022-11-26 00:29:24,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-26 00:29:24,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:24,148 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:24,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 00:29:24,148 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:29:24,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:24,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1357275846, now seen corresponding path program 1 times [2022-11-26 00:29:24,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:24,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095796414] [2022-11-26 00:29:24,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:24,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-26 00:29:24,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:24,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095796414] [2022-11-26 00:29:24,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095796414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:24,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:24,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:29:24,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321561872] [2022-11-26 00:29:24,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:24,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:29:24,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:24,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:29:24,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:29:24,715 INFO L87 Difference]: Start difference. First operand 5313 states and 7627 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-26 00:29:27,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:28,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:28,363 INFO L93 Difference]: Finished difference Result 5334 states and 7645 transitions. [2022-11-26 00:29:28,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:29:28,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 170 [2022-11-26 00:29:28,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:28,389 INFO L225 Difference]: With dead ends: 5334 [2022-11-26 00:29:28,390 INFO L226 Difference]: Without dead ends: 5332 [2022-11-26 00:29:28,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:29:28,395 INFO L413 NwaCegarLoop]: 1207 mSDtfsCounter, 1332 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:28,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 3611 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 588 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-11-26 00:29:28,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5332 states. [2022-11-26 00:29:28,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5332 to 5332. [2022-11-26 00:29:28,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5332 states, 3086 states have (on average 1.2718729747245625) internal successors, (3925), 3277 states have internal predecessors, (3925), 1837 states have call successors, (1837), 478 states have call predecessors, (1837), 406 states have return successors, (1881), 1612 states have call predecessors, (1881), 1833 states have call successors, (1881) [2022-11-26 00:29:29,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5332 states to 5332 states and 7643 transitions. [2022-11-26 00:29:29,002 INFO L78 Accepts]: Start accepts. Automaton has 5332 states and 7643 transitions. Word has length 170 [2022-11-26 00:29:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:29,003 INFO L495 AbstractCegarLoop]: Abstraction has 5332 states and 7643 transitions. [2022-11-26 00:29:29,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-26 00:29:29,003 INFO L276 IsEmpty]: Start isEmpty. Operand 5332 states and 7643 transitions. [2022-11-26 00:29:29,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-26 00:29:29,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:29,008 INFO L195 NwaCegarLoop]: trace histogram [11, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:29,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-26 00:29:29,008 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:29:29,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:29,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1594124021, now seen corresponding path program 1 times [2022-11-26 00:29:29,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:29,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77006646] [2022-11-26 00:29:29,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:29,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-26 00:29:29,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:29,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77006646] [2022-11-26 00:29:29,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77006646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:29,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:29,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:29:29,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858540272] [2022-11-26 00:29:29,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:29,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:29:29,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:29,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:29:29,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:29:29,542 INFO L87 Difference]: Start difference. First operand 5332 states and 7643 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-26 00:29:33,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:33,940 INFO L93 Difference]: Finished difference Result 5338 states and 7648 transitions. [2022-11-26 00:29:33,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:29:33,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 175 [2022-11-26 00:29:33,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:33,964 INFO L225 Difference]: With dead ends: 5338 [2022-11-26 00:29:33,964 INFO L226 Difference]: Without dead ends: 5336 [2022-11-26 00:29:33,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:29:33,968 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1338 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:33,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-26 00:29:33,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5336 states. [2022-11-26 00:29:34,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5336 to 5336. [2022-11-26 00:29:34,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5336 states, 3089 states have (on average 1.2716089349303983) internal successors, (3928), 3280 states have internal predecessors, (3928), 1837 states have call successors, (1837), 479 states have call predecessors, (1837), 407 states have return successors, (1881), 1612 states have call predecessors, (1881), 1833 states have call successors, (1881) [2022-11-26 00:29:34,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5336 states to 5336 states and 7646 transitions. [2022-11-26 00:29:34,543 INFO L78 Accepts]: Start accepts. Automaton has 5336 states and 7646 transitions. Word has length 175 [2022-11-26 00:29:34,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:34,544 INFO L495 AbstractCegarLoop]: Abstraction has 5336 states and 7646 transitions. [2022-11-26 00:29:34,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-26 00:29:34,545 INFO L276 IsEmpty]: Start isEmpty. Operand 5336 states and 7646 transitions. [2022-11-26 00:29:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-26 00:29:34,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:34,548 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:34,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-26 00:29:34,549 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:29:34,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:34,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1755725850, now seen corresponding path program 1 times [2022-11-26 00:29:34,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:34,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46383569] [2022-11-26 00:29:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:34,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-11-26 00:29:35,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:35,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46383569] [2022-11-26 00:29:35,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46383569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:35,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:35,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:29:35,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225020988] [2022-11-26 00:29:35,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:35,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:29:35,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:35,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:29:35,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:29:35,134 INFO L87 Difference]: Start difference. First operand 5336 states and 7646 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-26 00:29:37,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:38,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:40,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:41,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:41,866 INFO L93 Difference]: Finished difference Result 6193 states and 8743 transitions. [2022-11-26 00:29:41,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:29:41,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 180 [2022-11-26 00:29:41,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:41,899 INFO L225 Difference]: With dead ends: 6193 [2022-11-26 00:29:41,899 INFO L226 Difference]: Without dead ends: 6191 [2022-11-26 00:29:41,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:29:41,905 INFO L413 NwaCegarLoop]: 1373 mSDtfsCounter, 930 mSDsluCounter, 3347 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 4720 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:41,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 4720 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-26 00:29:41,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6191 states. [2022-11-26 00:29:42,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6191 to 6149. [2022-11-26 00:29:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6149 states, 3489 states have (on average 1.2553740326741187) internal successors, (4380), 3694 states have internal predecessors, (4380), 2131 states have call successors, (2131), 634 states have call predecessors, (2131), 526 states have return successors, (2181), 1864 states have call predecessors, (2181), 2127 states have call successors, (2181) [2022-11-26 00:29:42,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6149 states to 6149 states and 8692 transitions. [2022-11-26 00:29:42,845 INFO L78 Accepts]: Start accepts. Automaton has 6149 states and 8692 transitions. Word has length 180 [2022-11-26 00:29:42,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:42,845 INFO L495 AbstractCegarLoop]: Abstraction has 6149 states and 8692 transitions. [2022-11-26 00:29:42,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-26 00:29:42,846 INFO L276 IsEmpty]: Start isEmpty. Operand 6149 states and 8692 transitions. [2022-11-26 00:29:42,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-26 00:29:42,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:42,850 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 9, 9, 7, 7, 7, 7, 7, 7, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:42,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-26 00:29:42,851 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:29:42,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:42,851 INFO L85 PathProgramCache]: Analyzing trace with hash 301493589, now seen corresponding path program 1 times [2022-11-26 00:29:42,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:42,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048520337] [2022-11-26 00:29:42,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:42,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-11-26 00:29:43,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:43,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048520337] [2022-11-26 00:29:43,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048520337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:43,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:43,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:29:43,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45390074] [2022-11-26 00:29:43,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:43,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:29:43,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:43,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:29:43,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:29:43,378 INFO L87 Difference]: Start difference. First operand 6149 states and 8692 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-26 00:29:46,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:48,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:48,555 INFO L93 Difference]: Finished difference Result 6155 states and 8697 transitions. [2022-11-26 00:29:48,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:29:48,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 185 [2022-11-26 00:29:48,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:48,588 INFO L225 Difference]: With dead ends: 6155 [2022-11-26 00:29:48,588 INFO L226 Difference]: Without dead ends: 6153 [2022-11-26 00:29:48,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:29:48,594 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1338 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:48,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-26 00:29:48,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6153 states. [2022-11-26 00:29:49,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6153 to 6153. [2022-11-26 00:29:49,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6153 states, 3492 states have (on average 1.2551546391752577) internal successors, (4383), 3697 states have internal predecessors, (4383), 2131 states have call successors, (2131), 635 states have call predecessors, (2131), 527 states have return successors, (2181), 1864 states have call predecessors, (2181), 2127 states have call successors, (2181) [2022-11-26 00:29:49,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6153 states to 6153 states and 8695 transitions. [2022-11-26 00:29:49,441 INFO L78 Accepts]: Start accepts. Automaton has 6153 states and 8695 transitions. Word has length 185 [2022-11-26 00:29:49,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:49,442 INFO L495 AbstractCegarLoop]: Abstraction has 6153 states and 8695 transitions. [2022-11-26 00:29:49,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-26 00:29:49,442 INFO L276 IsEmpty]: Start isEmpty. Operand 6153 states and 8695 transitions. [2022-11-26 00:29:49,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-26 00:29:49,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:49,446 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 7, 7, 7, 7, 7, 7, 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] [2022-11-26 00:29:49,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-26 00:29:49,447 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:29:49,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:49,447 INFO L85 PathProgramCache]: Analyzing trace with hash -521342493, now seen corresponding path program 1 times [2022-11-26 00:29:49,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:49,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302059247] [2022-11-26 00:29:49,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:49,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2022-11-26 00:29:50,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:50,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302059247] [2022-11-26 00:29:50,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302059247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:50,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:50,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:29:50,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747775295] [2022-11-26 00:29:50,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:50,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:29:50,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:50,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:29:50,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:29:50,054 INFO L87 Difference]: Start difference. First operand 6153 states and 8695 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-26 00:29:52,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:55,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:55,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:55,757 INFO L93 Difference]: Finished difference Result 6159 states and 8700 transitions. [2022-11-26 00:29:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:29:55,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 191 [2022-11-26 00:29:55,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:55,783 INFO L225 Difference]: With dead ends: 6159 [2022-11-26 00:29:55,783 INFO L226 Difference]: Without dead ends: 6155 [2022-11-26 00:29:55,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:29:55,788 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1338 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:55,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 576 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-26 00:29:55,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6155 states. [2022-11-26 00:29:56,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6155 to 6155. [2022-11-26 00:29:56,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6155 states, 3494 states have (on average 1.254722381224957) internal successors, (4384), 3698 states have internal predecessors, (4384), 2131 states have call successors, (2131), 636 states have call predecessors, (2131), 527 states have return successors, (2181), 1864 states have call predecessors, (2181), 2127 states have call successors, (2181) [2022-11-26 00:29:56,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6155 states to 6155 states and 8696 transitions. [2022-11-26 00:29:56,530 INFO L78 Accepts]: Start accepts. Automaton has 6155 states and 8696 transitions. Word has length 191 [2022-11-26 00:29:56,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:56,531 INFO L495 AbstractCegarLoop]: Abstraction has 6155 states and 8696 transitions. [2022-11-26 00:29:56,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-26 00:29:56,531 INFO L276 IsEmpty]: Start isEmpty. Operand 6155 states and 8696 transitions. [2022-11-26 00:29:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-26 00:29:56,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:56,535 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 7, 7, 7, 7, 7, 7, 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] [2022-11-26 00:29:56,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-26 00:29:56,536 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:29:56,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:56,536 INFO L85 PathProgramCache]: Analyzing trace with hash 430973176, now seen corresponding path program 1 times [2022-11-26 00:29:56,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:56,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548464145] [2022-11-26 00:29:56,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:56,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2022-11-26 00:29:57,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:57,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548464145] [2022-11-26 00:29:57,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548464145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:57,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:57,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:29:57,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007115883] [2022-11-26 00:29:57,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:57,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:29:57,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:57,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:29:57,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:29:57,242 INFO L87 Difference]: Start difference. First operand 6155 states and 8696 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-26 00:30:00,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:30:01,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:30:01,981 INFO L93 Difference]: Finished difference Result 6155 states and 8696 transitions. [2022-11-26 00:30:01,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:30:01,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 196 [2022-11-26 00:30:01,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:30:02,008 INFO L225 Difference]: With dead ends: 6155 [2022-11-26 00:30:02,008 INFO L226 Difference]: Without dead ends: 5996 [2022-11-26 00:30:02,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:30:02,015 INFO L413 NwaCegarLoop]: 1199 mSDtfsCounter, 1334 mSDsluCounter, 2382 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:30:02,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 3581 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-26 00:30:02,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5996 states. [2022-11-26 00:30:03,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5996 to 5996. [2022-11-26 00:30:03,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5996 states, 3440 states have (on average 1.2482558139534883) internal successors, (4294), 3608 states have internal predecessors, (4294), 2042 states have call successors, (2042), 609 states have call predecessors, (2042), 512 states have return successors, (2096), 1822 states have call predecessors, (2096), 2042 states have call successors, (2096) [2022-11-26 00:30:03,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5996 states to 5996 states and 8432 transitions. [2022-11-26 00:30:03,086 INFO L78 Accepts]: Start accepts. Automaton has 5996 states and 8432 transitions. Word has length 196 [2022-11-26 00:30:03,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:30:03,087 INFO L495 AbstractCegarLoop]: Abstraction has 5996 states and 8432 transitions. [2022-11-26 00:30:03,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-26 00:30:03,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5996 states and 8432 transitions. [2022-11-26 00:30:03,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-26 00:30:03,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:30:03,091 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:30:03,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-26 00:30:03,092 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:30:03,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:30:03,092 INFO L85 PathProgramCache]: Analyzing trace with hash -479486756, now seen corresponding path program 1 times [2022-11-26 00:30:03,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:30:03,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587160530] [2022-11-26 00:30:03,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:30:03,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:30:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:30:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2022-11-26 00:30:04,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:30:04,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587160530] [2022-11-26 00:30:04,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587160530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:30:04,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:30:04,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:30:04,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404715341] [2022-11-26 00:30:04,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:30:04,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:30:04,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:30:04,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:30:04,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:30:04,078 INFO L87 Difference]: Start difference. First operand 5996 states and 8432 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-26 00:30:09,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:30:10,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:30:10,418 INFO L93 Difference]: Finished difference Result 6009 states and 8443 transitions. [2022-11-26 00:30:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:30:10,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 208 [2022-11-26 00:30:10,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:30:10,446 INFO L225 Difference]: With dead ends: 6009 [2022-11-26 00:30:10,446 INFO L226 Difference]: Without dead ends: 6007 [2022-11-26 00:30:10,450 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 [2022-11-26 00:30:10,451 INFO L413 NwaCegarLoop]: 1322 mSDtfsCounter, 856 mSDsluCounter, 3262 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 4584 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:30:10,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 4584 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-26 00:30:10,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6007 states. [2022-11-26 00:30:11,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6007 to 5996. [2022-11-26 00:30:11,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5996 states, 3440 states have (on average 1.2450581395348836) internal successors, (4283), 3608 states have internal predecessors, (4283), 2042 states have call successors, (2042), 609 states have call predecessors, (2042), 512 states have return successors, (2096), 1822 states have call predecessors, (2096), 2042 states have call successors, (2096) [2022-11-26 00:30:11,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5996 states to 5996 states and 8421 transitions. [2022-11-26 00:30:11,179 INFO L78 Accepts]: Start accepts. Automaton has 5996 states and 8421 transitions. Word has length 208 [2022-11-26 00:30:11,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:30:11,180 INFO L495 AbstractCegarLoop]: Abstraction has 5996 states and 8421 transitions. [2022-11-26 00:30:11,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-26 00:30:11,180 INFO L276 IsEmpty]: Start isEmpty. Operand 5996 states and 8421 transitions. [2022-11-26 00:30:11,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2022-11-26 00:30:11,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:30:11,191 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 13, 7, 7, 7, 7, 7, 7, 5, 3, 3, 3, 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] [2022-11-26 00:30:11,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-26 00:30:11,192 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:30:11,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:30:11,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1529763751, now seen corresponding path program 1 times [2022-11-26 00:30:11,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:30:11,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864326853] [2022-11-26 00:30:11,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:30:11,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:30:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:30:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2725 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2725 trivial. 0 not checked. [2022-11-26 00:30:12,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:30:12,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864326853] [2022-11-26 00:30:12,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864326853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:30:12,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:30:12,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:30:12,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411995663] [2022-11-26 00:30:12,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:30:12,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:30:12,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:30:12,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:30:12,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:30:12,092 INFO L87 Difference]: Start difference. First operand 5996 states and 8421 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-26 00:30:15,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:30:15,467 INFO L93 Difference]: Finished difference Result 11963 states and 16887 transitions. [2022-11-26 00:30:15,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:30:15,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 552 [2022-11-26 00:30:15,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:30:15,495 INFO L225 Difference]: With dead ends: 11963 [2022-11-26 00:30:15,495 INFO L226 Difference]: Without dead ends: 6036 [2022-11-26 00:30:15,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:30:15,520 INFO L413 NwaCegarLoop]: 1155 mSDtfsCounter, 2 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:30:15,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2303 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-26 00:30:15,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2022-11-26 00:30:16,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 6004. [2022-11-26 00:30:16,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6004 states, 3448 states have (on average 1.2444895591647331) internal successors, (4291), 3616 states have internal predecessors, (4291), 2042 states have call successors, (2042), 609 states have call predecessors, (2042), 512 states have return successors, (2096), 1822 states have call predecessors, (2096), 2042 states have call successors, (2096) [2022-11-26 00:30:16,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6004 states to 6004 states and 8429 transitions. [2022-11-26 00:30:16,118 INFO L78 Accepts]: Start accepts. Automaton has 6004 states and 8429 transitions. Word has length 552 [2022-11-26 00:30:16,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:30:16,119 INFO L495 AbstractCegarLoop]: Abstraction has 6004 states and 8429 transitions. [2022-11-26 00:30:16,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-26 00:30:16,120 INFO L276 IsEmpty]: Start isEmpty. Operand 6004 states and 8429 transitions. [2022-11-26 00:30:16,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2022-11-26 00:30:16,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:30:16,134 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 13, 7, 7, 7, 7, 7, 7, 5, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:30:16,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-26 00:30:16,136 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:30:16,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:30:16,136 INFO L85 PathProgramCache]: Analyzing trace with hash -132276092, now seen corresponding path program 1 times [2022-11-26 00:30:16,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:30:16,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415971380] [2022-11-26 00:30:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:30:16,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:30:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:30:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3225 trivial. 0 not checked. [2022-11-26 00:30:17,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:30:17,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415971380] [2022-11-26 00:30:17,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415971380] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:30:17,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586707639] [2022-11-26 00:30:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:30:17,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:30:17,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:30:17,006 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:30:17,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6137087-4a74-45df-97b3-b4a582ccdef8/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:30:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:30:18,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 6634 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:30:18,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:30:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3226 backedges. 588 proven. 1 refuted. 0 times theorem prover too weak. 2637 trivial. 0 not checked. [2022-11-26 00:30:18,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:30:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3225 trivial. 0 not checked. [2022-11-26 00:30:19,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586707639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:30:19,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [593225428] [2022-11-26 00:30:20,031 INFO L159 IcfgInterpreter]: Started Sifa with 201 locations of interest [2022-11-26 00:30:20,031 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:30:20,039 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:30:20,045 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:30:20,046 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:30:30,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-26 00:30:30,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-26 00:30:32,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21