./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-smsc-smc91c92_cs.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:48:28,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:48:28,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:48:28,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:48:28,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:48:28,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:48:28,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:48:28,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:48:28,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:48:28,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:48:28,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:48:28,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:48:28,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:48:28,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:48:28,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:48:28,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:48:28,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:48:28,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:48:28,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:48:28,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:48:28,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:48:28,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:48:28,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:48:28,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:48:28,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:48:28,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:48:28,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:48:28,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:48:28,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:48:28,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:48:28,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:48:28,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:48:28,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:48:28,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:48:28,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:48:28,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:48:28,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:48:28,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:48:28,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:48:28,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:48:28,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:48:28,737 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 10:48:28,750 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:48:28,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:48:28,750 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:48:28,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:48:28,751 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:48:28,751 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:48:28,751 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:48:28,751 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:48:28,751 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:48:28,751 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:48:28,751 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:48:28,752 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:48:28,752 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:48:28,752 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:48:28,752 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:48:28,752 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:48:28,752 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:48:28,753 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:48:28,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:48:28,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:48:28,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:48:28,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:48:28,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:48:28,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:48:28,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:48:28,754 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:48:28,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:48:28,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:48:28,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:48:28,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:48:28,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:48:28,755 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:48:28,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:48:28,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:48:28,756 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:48:28,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:48:28,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:48:28,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:48:28,756 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_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 [2022-12-14 10:48:28,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:48:28,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:48:28,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:48:28,956 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:48:28,956 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:48:28,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2022-12-14 10:48:31,541 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:48:31,956 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:48:31,957 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2022-12-14 10:48:31,991 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh/data/108c3631c/b02c7c6902ee49dc98d7d6b642e8b49e/FLAG0d2ce3f1f [2022-12-14 10:48:32,005 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh/data/108c3631c/b02c7c6902ee49dc98d7d6b642e8b49e [2022-12-14 10:48:32,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:48:32,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:48:32,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:48:32,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:48:32,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:48:32,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:48:32" (1/1) ... [2022-12-14 10:48:32,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e4d430b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:32, skipping insertion in model container [2022-12-14 10:48:32,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:48:32" (1/1) ... [2022-12-14 10:48:32,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:48:32,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:48:32,868 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-12-14 10:48:32,876 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-12-14 10:48:32,883 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-14 10:48:32,914 WARN L623 FunctionHandler]: Unknown extern function ioremap_nocache [2022-12-14 10:48:32,968 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-12-14 10:48:33,011 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-14 10:48:33,011 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-14 10:48:33,019 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 10:48:33,022 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:48:33,037 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_irq [2022-12-14 10:48:33,241 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:48:33,242 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 10:48:33,246 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:48:33,257 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:48:33,258 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:48:33,259 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:48:33,267 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-12-14 10:48:33,272 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_config [2022-12-14 10:48:33,274 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_window [2022-12-14 10:48:33,275 WARN L623 FunctionHandler]: Unknown extern function pcmcia_map_mem_page [2022-12-14 10:48:33,279 WARN L623 FunctionHandler]: Unknown extern function pcmcia_parse_tuple [2022-12-14 10:48:33,286 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_tuple [2022-12-14 10:48:33,287 WARN L623 FunctionHandler]: Unknown extern function pcmcia_get_tuple [2022-12-14 10:48:33,287 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:48:33,293 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:48:33,300 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:48:33,307 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-12-14 10:48:33,311 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_config [2022-12-14 10:48:33,315 WARN L623 FunctionHandler]: Unknown extern function pcmcia_get_mac_from_cis [2022-12-14 10:48:33,321 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-12-14 10:48:33,321 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-12-14 10:48:33,325 WARN L623 FunctionHandler]: Unknown extern function request_firmware [2022-12-14 10:48:33,326 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:48:33,327 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:48:33,327 WARN L623 FunctionHandler]: Unknown extern function release_firmware [2022-12-14 10:48:33,336 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_tuple [2022-12-14 10:48:33,340 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:48:33,344 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-12-14 10:48:33,349 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:48:33,350 WARN L623 FunctionHandler]: Unknown extern function netif_device_attach [2022-12-14 10:48:33,354 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:48:33,357 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:33,357 WARN L623 FunctionHandler]: Unknown extern function pcmcia_fixup_iowidth [2022-12-14 10:48:33,360 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:48:33,362 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_irq [2022-12-14 10:48:33,363 WARN L623 FunctionHandler]: Unknown extern function pcmcia_enable_device [2022-12-14 10:48:33,364 WARN L623 FunctionHandler]: Unknown extern function dev_notice [2022-12-14 10:48:33,366 WARN L623 FunctionHandler]: Unknown extern function dev_notice [2022-12-14 10:48:33,374 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 10:48:33,374 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:33,375 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:33,375 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:33,376 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:48:33,378 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:33,378 WARN L623 FunctionHandler]: Unknown extern function netdev_notice [2022-12-14 10:48:33,381 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:48:33,382 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-12-14 10:48:33,382 WARN L623 FunctionHandler]: Unknown extern function pcmcia_disable_device [2022-12-14 10:48:33,390 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:48:33,390 WARN L623 FunctionHandler]: Unknown extern function pcmcia_dev_present [2022-12-14 10:48:33,391 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:33,392 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-14 10:48:33,393 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 10:48:33,395 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:48:33,402 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:48:33,403 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-12-14 10:48:33,405 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:33,408 WARN L623 FunctionHandler]: Unknown extern function netdev_notice [2022-12-14 10:48:33,411 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:33,413 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:33,414 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:48:33,414 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 10:48:33,417 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:33,424 WARN L623 FunctionHandler]: Unknown extern function netdev_notice [2022-12-14 10:48:33,431 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:33,436 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:33,437 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:33,439 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:33,443 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:33,444 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:33,449 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:48:33,451 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:33,452 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:33,453 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 10:48:33,454 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-12-14 10:48:33,454 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-14 10:48:33,457 WARN L623 FunctionHandler]: Unknown extern function crc32_le [2022-12-14 10:48:33,458 WARN L623 FunctionHandler]: Unknown extern function bitrev32 [2022-12-14 10:48:33,461 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:33,465 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:33,466 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:48:33,472 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:33,473 WARN L623 FunctionHandler]: Unknown extern function trace_hardirqs_off [2022-12-14 10:48:33,473 WARN L623 FunctionHandler]: Unknown extern function trace_hardirqs_off [2022-12-14 10:48:33,474 WARN L623 FunctionHandler]: Unknown extern function trace_hardirqs_on [2022-12-14 10:48:33,474 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 10:48:33,475 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:33,476 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:33,478 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:33,480 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:33,481 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:33,483 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:33,483 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:33,484 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 10:48:33,485 WARN L623 FunctionHandler]: Unknown extern function mii_link_ok [2022-12-14 10:48:33,521 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 10:48:33,522 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 10:48:33,526 WARN L623 FunctionHandler]: Unknown extern function mii_ethtool_gset [2022-12-14 10:48:33,530 WARN L623 FunctionHandler]: Unknown extern function mii_ethtool_sset [2022-12-14 10:48:33,538 WARN L623 FunctionHandler]: Unknown extern function mii_nway_restart [2022-12-14 10:48:33,540 WARN L623 FunctionHandler]: Unknown extern function generic_mii_ioctl [2022-12-14 10:48:33,756 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-14 10:48:33,757 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-14 10:48:33,757 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-14 10:48:33,761 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 10:48:33,763 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 10:48:33,763 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 10:48:33,765 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 10:48:33,765 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 10:48:33,768 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-12-14 10:48:33,780 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 10:48:33,780 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 10:48:33,781 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-12-14 10:48:33,782 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 10:48:33,782 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 10:48:33,783 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-12-14 10:48:33,783 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 10:48:33,784 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 10:48:33,784 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-12-14 10:48:33,784 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:48:33,785 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:48:33,786 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:48:33,786 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:48:33,786 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:48:33,786 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:48:33,786 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:48:33,787 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:48:33,787 WARN L623 FunctionHandler]: Unknown extern function pcmcia_register_driver [2022-12-14 10:48:33,787 WARN L623 FunctionHandler]: Unknown extern function pcmcia_unregister_driver [2022-12-14 10:48:33,837 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-14 10:48:33,837 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-14 10:48:33,844 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-14 10:48:34,249 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_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2022-12-14 10:48:34,252 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_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2022-12-14 10:48:34,253 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_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2022-12-14 10:48:34,253 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_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2022-12-14 10:48:34,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:48:34,301 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:48:34,398 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-12-14 10:48:34,398 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-12-14 10:48:34,398 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-14 10:48:34,399 WARN L623 FunctionHandler]: Unknown extern function ioremap_nocache [2022-12-14 10:48:34,400 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-12-14 10:48:34,402 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-14 10:48:34,402 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-14 10:48:34,403 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 10:48:34,404 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:48:34,404 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_irq [2022-12-14 10:48:34,409 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:48:34,410 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 10:48:34,411 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:48:34,413 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:48:34,414 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:48:34,414 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:48:34,416 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-12-14 10:48:34,417 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_config [2022-12-14 10:48:34,418 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_window [2022-12-14 10:48:34,419 WARN L623 FunctionHandler]: Unknown extern function pcmcia_map_mem_page [2022-12-14 10:48:34,420 WARN L623 FunctionHandler]: Unknown extern function pcmcia_parse_tuple [2022-12-14 10:48:34,423 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_tuple [2022-12-14 10:48:34,424 WARN L623 FunctionHandler]: Unknown extern function pcmcia_get_tuple [2022-12-14 10:48:34,424 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 10:48:34,426 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:48:34,427 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:48:34,429 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-12-14 10:48:34,430 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_config [2022-12-14 10:48:34,431 WARN L623 FunctionHandler]: Unknown extern function pcmcia_get_mac_from_cis [2022-12-14 10:48:34,432 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-12-14 10:48:34,433 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-12-14 10:48:34,433 WARN L623 FunctionHandler]: Unknown extern function request_firmware [2022-12-14 10:48:34,434 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:48:34,434 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:48:34,435 WARN L623 FunctionHandler]: Unknown extern function release_firmware [2022-12-14 10:48:34,437 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_tuple [2022-12-14 10:48:34,440 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:48:34,441 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-12-14 10:48:34,443 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:48:34,444 WARN L623 FunctionHandler]: Unknown extern function netif_device_attach [2022-12-14 10:48:34,445 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:48:34,447 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:34,447 WARN L623 FunctionHandler]: Unknown extern function pcmcia_fixup_iowidth [2022-12-14 10:48:34,449 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:48:34,451 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_irq [2022-12-14 10:48:34,451 WARN L623 FunctionHandler]: Unknown extern function pcmcia_enable_device [2022-12-14 10:48:34,451 WARN L623 FunctionHandler]: Unknown extern function dev_notice [2022-12-14 10:48:34,453 WARN L623 FunctionHandler]: Unknown extern function dev_notice [2022-12-14 10:48:34,459 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 10:48:34,460 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:34,460 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:34,461 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:34,461 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:48:34,462 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:34,463 WARN L623 FunctionHandler]: Unknown extern function netdev_notice [2022-12-14 10:48:34,465 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:48:34,466 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-12-14 10:48:34,466 WARN L623 FunctionHandler]: Unknown extern function pcmcia_disable_device [2022-12-14 10:48:34,470 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:48:34,471 WARN L623 FunctionHandler]: Unknown extern function pcmcia_dev_present [2022-12-14 10:48:34,471 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:34,472 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-14 10:48:34,472 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 10:48:34,474 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:48:34,476 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:48:34,476 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-12-14 10:48:34,477 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:34,480 WARN L623 FunctionHandler]: Unknown extern function netdev_notice [2022-12-14 10:48:34,481 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:34,483 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:34,483 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:48:34,484 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 10:48:34,486 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:34,489 WARN L623 FunctionHandler]: Unknown extern function netdev_notice [2022-12-14 10:48:34,491 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:34,494 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:34,495 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:34,496 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:34,499 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:34,500 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:34,503 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:48:34,504 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:34,505 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:34,506 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 10:48:34,507 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-12-14 10:48:34,507 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-14 10:48:34,509 WARN L623 FunctionHandler]: Unknown extern function crc32_le [2022-12-14 10:48:34,509 WARN L623 FunctionHandler]: Unknown extern function bitrev32 [2022-12-14 10:48:34,511 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:34,513 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:48:34,514 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:48:34,517 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:34,517 WARN L623 FunctionHandler]: Unknown extern function trace_hardirqs_off [2022-12-14 10:48:34,518 WARN L623 FunctionHandler]: Unknown extern function trace_hardirqs_off [2022-12-14 10:48:34,518 WARN L623 FunctionHandler]: Unknown extern function trace_hardirqs_on [2022-12-14 10:48:34,518 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 10:48:34,519 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:34,519 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:34,520 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:34,521 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:34,521 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:34,522 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:34,522 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:48:34,523 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 10:48:34,524 WARN L623 FunctionHandler]: Unknown extern function mii_link_ok [2022-12-14 10:48:34,526 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 10:48:34,526 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 10:48:34,527 WARN L623 FunctionHandler]: Unknown extern function mii_ethtool_gset [2022-12-14 10:48:34,528 WARN L623 FunctionHandler]: Unknown extern function mii_ethtool_sset [2022-12-14 10:48:34,529 WARN L623 FunctionHandler]: Unknown extern function mii_nway_restart [2022-12-14 10:48:34,530 WARN L623 FunctionHandler]: Unknown extern function generic_mii_ioctl [2022-12-14 10:48:34,539 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-14 10:48:34,540 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-14 10:48:34,540 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-14 10:48:34,542 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 10:48:34,544 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 10:48:34,544 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 10:48:34,545 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 10:48:34,546 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 10:48:34,548 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-12-14 10:48:34,565 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 10:48:34,565 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 10:48:34,568 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-12-14 10:48:34,568 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 10:48:34,568 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 10:48:34,568 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-12-14 10:48:34,569 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 10:48:34,569 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 10:48:34,569 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-12-14 10:48:34,570 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:48:34,570 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:48:34,570 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:48:34,571 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:48:34,571 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:48:34,571 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:48:34,571 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:48:34,572 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:48:34,572 WARN L623 FunctionHandler]: Unknown extern function pcmcia_register_driver [2022-12-14 10:48:34,572 WARN L623 FunctionHandler]: Unknown extern function pcmcia_unregister_driver [2022-12-14 10:48:34,586 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-14 10:48:34,587 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-14 10:48:34,587 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-14 10:48:34,601 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_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2022-12-14 10:48:34,601 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_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2022-12-14 10:48:34,601 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_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2022-12-14 10:48:34,602 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_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2022-12-14 10:48:34,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:48:34,732 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:48:34,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:34 WrapperNode [2022-12-14 10:48:34,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:48:34,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:48:34,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:48:34,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:48:34,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:34" (1/1) ... [2022-12-14 10:48:34,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:34" (1/1) ... [2022-12-14 10:48:34,885 INFO L138 Inliner]: procedures = 407, calls = 2608, calls flagged for inlining = 197, calls inlined = 171, statements flattened = 5040 [2022-12-14 10:48:34,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:48:34,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:48:34,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:48:34,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:48:34,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:34" (1/1) ... [2022-12-14 10:48:34,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:34" (1/1) ... [2022-12-14 10:48:34,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:34" (1/1) ... [2022-12-14 10:48:34,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:34" (1/1) ... [2022-12-14 10:48:34,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:34" (1/1) ... [2022-12-14 10:48:35,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:34" (1/1) ... [2022-12-14 10:48:35,018 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:34" (1/1) ... [2022-12-14 10:48:35,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:34" (1/1) ... [2022-12-14 10:48:35,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:48:35,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:48:35,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:48:35,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:48:35,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:34" (1/1) ... [2022-12-14 10:48:35,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:48:35,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:48:35,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:48:35,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:48:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-12-14 10:48:35,102 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-12-14 10:48:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_detach [2022-12-14 10:48:35,102 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_detach [2022-12-14 10:48:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-12-14 10:48:35,102 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-12-14 10:48:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-12-14 10:48:35,102 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-12-14 10:48:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure mhz_3288_power [2022-12-14 10:48:35,102 INFO L138 BoogieDeclarations]: Found implementation of procedure mhz_3288_power [2022-12-14 10:48:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-14 10:48:35,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-14 10:48:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_request_io [2022-12-14 10:48:35,103 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_request_io [2022-12-14 10:48:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_70 [2022-12-14 10:48:35,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_70 [2022-12-14 10:48:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-12-14 10:48:35,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-12-14 10:48:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-12-14 10:48:35,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-12-14 10:48:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-12-14 10:48:35,103 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-12-14 10:48:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_resume [2022-12-14 10:48:35,103 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_resume [2022-12-14 10:48:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-12-14 10:48:35,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-12-14 10:48:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:48:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_suspend [2022-12-14 10:48:35,103 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_suspend [2022-12-14 10:48:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-12-14 10:48:35,103 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-12-14 10:48:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-12-14 10:48:35,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-12-14 10:48:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-12-14 10:48:35,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-12-14 10:48:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:48:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-12-14 10:48:35,104 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-12-14 10:48:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-12-14 10:48:35,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-12-14 10:48:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-12-14 10:48:35,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-12-14 10:48:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure cvt_ascii_address [2022-12-14 10:48:35,104 INFO L138 BoogieDeclarations]: Found implementation of procedure cvt_ascii_address [2022-12-14 10:48:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-12-14 10:48:35,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-12-14 10:48:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:48:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-12-14 10:48:35,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-12-14 10:48:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-12-14 10:48:35,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-12-14 10:48:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smc91c92_cs_driver_exit_13_2 [2022-12-14 10:48:35,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smc91c92_cs_driver_exit_13_2 [2022-12-14 10:48:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:48:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-12-14 10:48:35,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-12-14 10:48:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-12-14 10:48:35,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-12-14 10:48:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 10:48:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-12-14 10:48:35,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-12-14 10:48:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure smc_tx_timeout [2022-12-14 10:48:35,105 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_tx_timeout [2022-12-14 10:48:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-12-14 10:48:35,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-12-14 10:48:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure smc_reset [2022-12-14 10:48:35,105 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_reset [2022-12-14 10:48:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-12-14 10:48:35,105 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-12-14 10:48:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-12-14 10:48:35,105 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-12-14 10:48:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:48:35,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:48:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-12-14 10:48:35,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-12-14 10:48:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure smc_hardware_send_packet [2022-12-14 10:48:35,105 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_hardware_send_packet [2022-12-14 10:48:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-12-14 10:48:35,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-12-14 10:48:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-12-14 10:48:35,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-12-14 10:48:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_smc_private [2022-12-14 10:48:35,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_smc_private [2022-12-14 10:48:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure osi_load_firmware [2022-12-14 10:48:35,106 INFO L138 BoogieDeclarations]: Found implementation of procedure osi_load_firmware [2022-12-14 10:48:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-12-14 10:48:35,106 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-12-14 10:48:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure smc_set_xcvr [2022-12-14 10:48:35,106 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_set_xcvr [2022-12-14 10:48:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-12-14 10:48:35,106 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-12-14 10:48:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:48:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-12-14 10:48:35,106 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-12-14 10:48:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 10:48:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-12-14 10:48:35,106 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-12-14 10:48:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure mot_config [2022-12-14 10:48:35,106 INFO L138 BoogieDeclarations]: Found implementation of procedure mot_config [2022-12-14 10:48:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 10:48:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2022-12-14 10:48:35,107 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2022-12-14 10:48:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-12-14 10:48:35,107 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-12-14 10:48:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-12-14 10:48:35,107 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-12-14 10:48:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-12-14 10:48:35,107 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-12-14 10:48:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-12-14 10:48:35,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-12-14 10:48:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-12-14 10:48:35,107 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-12-14 10:48:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2022-12-14 10:48:35,107 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2022-12-14 10:48:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-12-14 10:48:35,107 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-12-14 10:48:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-12-14 10:48:35,107 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-12-14 10:48:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-12-14 10:48:35,107 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-12-14 10:48:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:48:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_tuple [2022-12-14 10:48:35,107 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_tuple [2022-12-14 10:48:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_release [2022-12-14 10:48:35,108 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_release [2022-12-14 10:48:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-14 10:48:35,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-14 10:48:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_smc_private [2022-12-14 10:48:35,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_smc_private [2022-12-14 10:48:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_config [2022-12-14 10:48:35,108 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_config [2022-12-14 10:48:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-12-14 10:48:35,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-12-14 10:48:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure smc_interrupt [2022-12-14 10:48:35,108 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_interrupt [2022-12-14 10:48:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-12-14 10:48:35,108 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-12-14 10:48:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:48:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-12-14 10:48:35,108 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-12-14 10:48:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-12-14 10:48:35,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-12-14 10:48:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-12-14 10:48:35,108 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-12-14 10:48:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-12-14 10:48:35,108 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-12-14 10:48:35,620 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:48:35,623 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:48:35,871 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-12-14 10:48:39,235 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-12-14 10:48:39,342 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:48:40,085 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:48:40,086 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:48:40,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:48:40 BoogieIcfgContainer [2022-12-14 10:48:40,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:48:40,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:48:40,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:48:40,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:48:40,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:48:32" (1/3) ... [2022-12-14 10:48:40,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64556764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:48:40, skipping insertion in model container [2022-12-14 10:48:40,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:34" (2/3) ... [2022-12-14 10:48:40,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64556764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:48:40, skipping insertion in model container [2022-12-14 10:48:40,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:48:40" (3/3) ... [2022-12-14 10:48:40,094 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2022-12-14 10:48:40,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:48:40,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-14 10:48:40,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:48:40,167 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;@45246be9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:48:40,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-14 10:48:40,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 1226 states, 693 states have (on average 1.2972582972582973) internal successors, (899), 714 states have internal predecessors, (899), 464 states have call successors, (464), 67 states have call predecessors, (464), 66 states have return successors, (458), 456 states have call predecessors, (458), 458 states have call successors, (458) [2022-12-14 10:48:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-14 10:48:40,185 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:40,186 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:48:40,186 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)] === [2022-12-14 10:48:40,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:40,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1465367942, now seen corresponding path program 1 times [2022-12-14 10:48:40,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:48:40,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326310810] [2022-12-14 10:48:40,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:40,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:48:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:40,752 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-12-14 10:48:40,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:48:40,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326310810] [2022-12-14 10:48:40,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326310810] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:48:40,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:48:40,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:48:40,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571610326] [2022-12-14 10:48:40,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:48:40,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:48:40,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:48:40,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:48:40,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:48:40,781 INFO L87 Difference]: Start difference. First operand has 1226 states, 693 states have (on average 1.2972582972582973) internal successors, (899), 714 states have internal predecessors, (899), 464 states have call successors, (464), 67 states have call predecessors, (464), 66 states have return successors, (458), 456 states have call predecessors, (458), 458 states have call successors, (458) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-14 10:48:42,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:42,780 INFO L93 Difference]: Finished difference Result 3554 states and 5367 transitions. [2022-12-14 10:48:42,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:48:42,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2022-12-14 10:48:42,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:42,801 INFO L225 Difference]: With dead ends: 3554 [2022-12-14 10:48:42,801 INFO L226 Difference]: Without dead ends: 2343 [2022-12-14 10:48:42,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:48:42,813 INFO L413 NwaCegarLoop]: 2002 mSDtfsCounter, 1695 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 3550 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:42,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1695 Valid, 3550 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 10:48:42,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2022-12-14 10:48:43,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2339. [2022-12-14 10:48:43,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2339 states, 1336 states have (on average 1.2911676646706587) internal successors, (1725), 1377 states have internal predecessors, (1725), 872 states have call successors, (872), 129 states have call predecessors, (872), 128 states have return successors, (868), 864 states have call predecessors, (868), 868 states have call successors, (868) [2022-12-14 10:48:43,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2339 states to 2339 states and 3465 transitions. [2022-12-14 10:48:43,051 INFO L78 Accepts]: Start accepts. Automaton has 2339 states and 3465 transitions. Word has length 141 [2022-12-14 10:48:43,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:43,052 INFO L495 AbstractCegarLoop]: Abstraction has 2339 states and 3465 transitions. [2022-12-14 10:48:43,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-14 10:48:43,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2339 states and 3465 transitions. [2022-12-14 10:48:43,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-12-14 10:48:43,059 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:43,059 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:48:43,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:48:43,060 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)] === [2022-12-14 10:48:43,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:43,060 INFO L85 PathProgramCache]: Analyzing trace with hash -760505959, now seen corresponding path program 1 times [2022-12-14 10:48:43,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:48:43,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292638821] [2022-12-14 10:48:43,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:43,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:48:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-12-14 10:48:43,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:48:43,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292638821] [2022-12-14 10:48:43,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292638821] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:48:43,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:48:43,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:48:43,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695364473] [2022-12-14 10:48:43,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:48:43,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:48:43,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:48:43,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:48:43,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:48:43,406 INFO L87 Difference]: Start difference. First operand 2339 states and 3465 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 10:48:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:45,186 INFO L93 Difference]: Finished difference Result 6545 states and 9657 transitions. [2022-12-14 10:48:45,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:48:45,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2022-12-14 10:48:45,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:45,212 INFO L225 Difference]: With dead ends: 6545 [2022-12-14 10:48:45,212 INFO L226 Difference]: Without dead ends: 4231 [2022-12-14 10:48:45,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:48:45,225 INFO L413 NwaCegarLoop]: 1932 mSDtfsCounter, 1424 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 3457 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:45,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 3457 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 10:48:45,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2022-12-14 10:48:45,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 4202. [2022-12-14 10:48:45,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4202 states, 2401 states have (on average 1.2811328613077884) internal successors, (3076), 2481 states have internal predecessors, (3076), 1555 states have call successors, (1555), 248 states have call predecessors, (1555), 243 states have return successors, (1551), 1532 states have call predecessors, (1551), 1551 states have call successors, (1551) [2022-12-14 10:48:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4202 states to 4202 states and 6182 transitions. [2022-12-14 10:48:45,427 INFO L78 Accepts]: Start accepts. Automaton has 4202 states and 6182 transitions. Word has length 149 [2022-12-14 10:48:45,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:45,427 INFO L495 AbstractCegarLoop]: Abstraction has 4202 states and 6182 transitions. [2022-12-14 10:48:45,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 10:48:45,427 INFO L276 IsEmpty]: Start isEmpty. Operand 4202 states and 6182 transitions. [2022-12-14 10:48:45,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-14 10:48:45,429 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:45,429 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:48:45,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:48:45,429 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)] === [2022-12-14 10:48:45,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:45,430 INFO L85 PathProgramCache]: Analyzing trace with hash -997873180, now seen corresponding path program 1 times [2022-12-14 10:48:45,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:48:45,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889265092] [2022-12-14 10:48:45,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:45,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:48:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:45,732 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-12-14 10:48:45,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:48:45,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889265092] [2022-12-14 10:48:45,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889265092] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:48:45,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:48:45,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:48:45,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808590645] [2022-12-14 10:48:45,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:48:45,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:48:45,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:48:45,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:48:45,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:48:45,735 INFO L87 Difference]: Start difference. First operand 4202 states and 6182 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-14 10:48:46,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:46,966 INFO L93 Difference]: Finished difference Result 8345 states and 12266 transitions. [2022-12-14 10:48:46,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:48:46,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 159 [2022-12-14 10:48:46,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:46,980 INFO L225 Difference]: With dead ends: 8345 [2022-12-14 10:48:46,980 INFO L226 Difference]: Without dead ends: 4168 [2022-12-14 10:48:46,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:48:46,990 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 1730 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:46,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 1609 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 10:48:46,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4168 states. [2022-12-14 10:48:47,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4168 to 4168. [2022-12-14 10:48:47,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4168 states, 2387 states have (on average 1.278173439463762) internal successors, (3051), 2467 states have internal predecessors, (3051), 1531 states have call successors, (1531), 252 states have call predecessors, (1531), 247 states have return successors, (1527), 1508 states have call predecessors, (1527), 1527 states have call successors, (1527) [2022-12-14 10:48:47,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4168 states to 4168 states and 6109 transitions. [2022-12-14 10:48:47,212 INFO L78 Accepts]: Start accepts. Automaton has 4168 states and 6109 transitions. Word has length 159 [2022-12-14 10:48:47,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:47,212 INFO L495 AbstractCegarLoop]: Abstraction has 4168 states and 6109 transitions. [2022-12-14 10:48:47,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-14 10:48:47,213 INFO L276 IsEmpty]: Start isEmpty. Operand 4168 states and 6109 transitions. [2022-12-14 10:48:47,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-14 10:48:47,214 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:47,214 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:48:47,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:48:47,215 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)] === [2022-12-14 10:48:47,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:47,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1030945476, now seen corresponding path program 1 times [2022-12-14 10:48:47,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:48:47,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94329351] [2022-12-14 10:48:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:47,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:48:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:47,584 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-12-14 10:48:47,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:48:47,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94329351] [2022-12-14 10:48:47,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94329351] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:48:47,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:48:47,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:48:47,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405493924] [2022-12-14 10:48:47,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:48:47,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:48:47,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:48:47,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:48:47,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:48:47,586 INFO L87 Difference]: Start difference. First operand 4168 states and 6109 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-14 10:48:48,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:48,631 INFO L93 Difference]: Finished difference Result 7535 states and 11000 transitions. [2022-12-14 10:48:48,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:48:48,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 158 [2022-12-14 10:48:48,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:48,642 INFO L225 Difference]: With dead ends: 7535 [2022-12-14 10:48:48,642 INFO L226 Difference]: Without dead ends: 3410 [2022-12-14 10:48:48,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:48:48,651 INFO L413 NwaCegarLoop]: 1321 mSDtfsCounter, 1467 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:48,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 1372 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 10:48:48,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2022-12-14 10:48:48,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 3410. [2022-12-14 10:48:48,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3410 states, 1991 states have (on average 1.2903063787041689) internal successors, (2569), 2049 states have internal predecessors, (2569), 1185 states have call successors, (1185), 236 states have call predecessors, (1185), 231 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-12-14 10:48:48,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 4935 transitions. [2022-12-14 10:48:48,832 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 4935 transitions. Word has length 158 [2022-12-14 10:48:48,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:48,832 INFO L495 AbstractCegarLoop]: Abstraction has 3410 states and 4935 transitions. [2022-12-14 10:48:48,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-14 10:48:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 4935 transitions. [2022-12-14 10:48:48,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-12-14 10:48:48,835 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:48,836 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:48:48,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 10:48:48,836 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)] === [2022-12-14 10:48:48,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:48,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1949407577, now seen corresponding path program 1 times [2022-12-14 10:48:48,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:48:48,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435130573] [2022-12-14 10:48:48,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:48,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:48:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2022-12-14 10:48:49,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:48:49,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435130573] [2022-12-14 10:48:49,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435130573] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:48:49,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:48:49,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:48:49,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642269069] [2022-12-14 10:48:49,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:48:49,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:48:49,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:48:49,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:48:49,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:48:49,284 INFO L87 Difference]: Start difference. First operand 3410 states and 4935 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 10:48:51,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:51,361 INFO L93 Difference]: Finished difference Result 3416 states and 4940 transitions. [2022-12-14 10:48:51,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:48:51,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 183 [2022-12-14 10:48:51,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:51,374 INFO L225 Difference]: With dead ends: 3416 [2022-12-14 10:48:51,375 INFO L226 Difference]: Without dead ends: 3414 [2022-12-14 10:48:51,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:48:51,377 INFO L413 NwaCegarLoop]: 1304 mSDtfsCounter, 1456 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:51,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 3899 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 10:48:51,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2022-12-14 10:48:51,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 3414. [2022-12-14 10:48:51,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3414 states, 1994 states have (on average 1.2898696088264794) internal successors, (2572), 2052 states have internal predecessors, (2572), 1185 states have call successors, (1185), 237 states have call predecessors, (1185), 232 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-12-14 10:48:51,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3414 states to 3414 states and 4938 transitions. [2022-12-14 10:48:51,604 INFO L78 Accepts]: Start accepts. Automaton has 3414 states and 4938 transitions. Word has length 183 [2022-12-14 10:48:51,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:51,605 INFO L495 AbstractCegarLoop]: Abstraction has 3414 states and 4938 transitions. [2022-12-14 10:48:51,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 10:48:51,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3414 states and 4938 transitions. [2022-12-14 10:48:51,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-12-14 10:48:51,607 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:51,608 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 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] [2022-12-14 10:48:51,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:48:51,608 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)] === [2022-12-14 10:48:51,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:51,608 INFO L85 PathProgramCache]: Analyzing trace with hash 159246581, now seen corresponding path program 1 times [2022-12-14 10:48:51,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:48:51,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372901430] [2022-12-14 10:48:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:51,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:48:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2022-12-14 10:48:52,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:48:52,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372901430] [2022-12-14 10:48:52,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372901430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:48:52,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:48:52,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:48:52,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864107665] [2022-12-14 10:48:52,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:48:52,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:48:52,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:48:52,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:48:52,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:48:52,113 INFO L87 Difference]: Start difference. First operand 3414 states and 4938 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2022-12-14 10:48:53,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:53,794 INFO L93 Difference]: Finished difference Result 3420 states and 4943 transitions. [2022-12-14 10:48:53,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:48:53,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 191 [2022-12-14 10:48:53,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:53,807 INFO L225 Difference]: With dead ends: 3420 [2022-12-14 10:48:53,807 INFO L226 Difference]: Without dead ends: 3418 [2022-12-14 10:48:53,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:48:53,809 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:53,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 10:48:53,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2022-12-14 10:48:53,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 3418. [2022-12-14 10:48:53,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 1997 states have (on average 1.2894341512268404) internal successors, (2575), 2055 states have internal predecessors, (2575), 1185 states have call successors, (1185), 238 states have call predecessors, (1185), 233 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-12-14 10:48:54,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 4941 transitions. [2022-12-14 10:48:54,002 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 4941 transitions. Word has length 191 [2022-12-14 10:48:54,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:54,002 INFO L495 AbstractCegarLoop]: Abstraction has 3418 states and 4941 transitions. [2022-12-14 10:48:54,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2022-12-14 10:48:54,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 4941 transitions. [2022-12-14 10:48:54,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-12-14 10:48:54,005 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:54,005 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:48:54,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 10:48:54,006 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)] === [2022-12-14 10:48:54,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:54,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1496530095, now seen corresponding path program 1 times [2022-12-14 10:48:54,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:48:54,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993185378] [2022-12-14 10:48:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:54,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:48:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2022-12-14 10:48:54,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:48:54,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993185378] [2022-12-14 10:48:54,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993185378] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:48:54,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:48:54,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:48:54,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374303727] [2022-12-14 10:48:54,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:48:54,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:48:54,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:48:54,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:48:54,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:48:54,412 INFO L87 Difference]: Start difference. First operand 3418 states and 4941 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2022-12-14 10:48:55,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:55,973 INFO L93 Difference]: Finished difference Result 3424 states and 4946 transitions. [2022-12-14 10:48:55,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:48:55,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 197 [2022-12-14 10:48:55,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:55,985 INFO L225 Difference]: With dead ends: 3424 [2022-12-14 10:48:55,986 INFO L226 Difference]: Without dead ends: 3422 [2022-12-14 10:48:55,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:48:55,988 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:55,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1459 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 10:48:55,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2022-12-14 10:48:56,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 3422. [2022-12-14 10:48:56,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3422 states, 2000 states have (on average 1.289) internal successors, (2578), 2058 states have internal predecessors, (2578), 1185 states have call successors, (1185), 239 states have call predecessors, (1185), 234 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-12-14 10:48:56,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 4944 transitions. [2022-12-14 10:48:56,260 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 4944 transitions. Word has length 197 [2022-12-14 10:48:56,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:56,260 INFO L495 AbstractCegarLoop]: Abstraction has 3422 states and 4944 transitions. [2022-12-14 10:48:56,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2022-12-14 10:48:56,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 4944 transitions. [2022-12-14 10:48:56,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-12-14 10:48:56,263 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:56,263 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:48:56,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 10:48:56,263 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)] === [2022-12-14 10:48:56,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:56,264 INFO L85 PathProgramCache]: Analyzing trace with hash -781350347, now seen corresponding path program 1 times [2022-12-14 10:48:56,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:48:56,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990144050] [2022-12-14 10:48:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:56,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:48:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:56,658 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2022-12-14 10:48:56,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:48:56,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990144050] [2022-12-14 10:48:56,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990144050] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:48:56,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:48:56,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:48:56,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862042282] [2022-12-14 10:48:56,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:48:56,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:48:56,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:48:56,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:48:56,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:48:56,660 INFO L87 Difference]: Start difference. First operand 3422 states and 4944 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2022-12-14 10:48:58,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:58,308 INFO L93 Difference]: Finished difference Result 3428 states and 4949 transitions. [2022-12-14 10:48:58,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:48:58,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 201 [2022-12-14 10:48:58,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:58,319 INFO L225 Difference]: With dead ends: 3428 [2022-12-14 10:48:58,319 INFO L226 Difference]: Without dead ends: 3426 [2022-12-14 10:48:58,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:48:58,321 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:58,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 10:48:58,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2022-12-14 10:48:58,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 3426. [2022-12-14 10:48:58,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 2003 states have (on average 1.288567149276086) internal successors, (2581), 2061 states have internal predecessors, (2581), 1185 states have call successors, (1185), 240 states have call predecessors, (1185), 235 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-12-14 10:48:58,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 4947 transitions. [2022-12-14 10:48:58,504 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 4947 transitions. Word has length 201 [2022-12-14 10:48:58,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:58,505 INFO L495 AbstractCegarLoop]: Abstraction has 3426 states and 4947 transitions. [2022-12-14 10:48:58,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2022-12-14 10:48:58,505 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 4947 transitions. [2022-12-14 10:48:58,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-12-14 10:48:58,507 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:58,508 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:48:58,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 10:48:58,508 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)] === [2022-12-14 10:48:58,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:58,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1544729561, now seen corresponding path program 1 times [2022-12-14 10:48:58,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:48:58,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630329535] [2022-12-14 10:48:58,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:58,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:48:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2022-12-14 10:48:58,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:48:58,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630329535] [2022-12-14 10:48:58,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630329535] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:48:58,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:48:58,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:48:58,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306343518] [2022-12-14 10:48:58,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:48:58,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:48:58,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:48:58,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:48:58,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:48:58,850 INFO L87 Difference]: Start difference. First operand 3426 states and 4947 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (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) [2022-12-14 10:49:00,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:49:00,567 INFO L93 Difference]: Finished difference Result 3432 states and 4952 transitions. [2022-12-14 10:49:00,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:49:00,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (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 203 [2022-12-14 10:49:00,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:49:00,577 INFO L225 Difference]: With dead ends: 3432 [2022-12-14 10:49:00,577 INFO L226 Difference]: Without dead ends: 3430 [2022-12-14 10:49:00,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:49:00,579 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1451 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:49:00,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 10:49:00,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2022-12-14 10:49:00,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 3430. [2022-12-14 10:49:00,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 2006 states have (on average 1.2881355932203389) internal successors, (2584), 2064 states have internal predecessors, (2584), 1185 states have call successors, (1185), 241 states have call predecessors, (1185), 236 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-12-14 10:49:00,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 4950 transitions. [2022-12-14 10:49:00,755 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 4950 transitions. Word has length 203 [2022-12-14 10:49:00,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:49:00,755 INFO L495 AbstractCegarLoop]: Abstraction has 3430 states and 4950 transitions. [2022-12-14 10:49:00,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (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) [2022-12-14 10:49:00,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 4950 transitions. [2022-12-14 10:49:00,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-12-14 10:49:00,758 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:49:00,759 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 6, 5, 5, 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] [2022-12-14 10:49:00,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 10:49:00,759 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)] === [2022-12-14 10:49:00,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:49:00,759 INFO L85 PathProgramCache]: Analyzing trace with hash -247568425, now seen corresponding path program 1 times [2022-12-14 10:49:00,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:49:00,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896119298] [2022-12-14 10:49:00,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:00,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:49:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2022-12-14 10:49:01,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:49:01,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896119298] [2022-12-14 10:49:01,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896119298] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:49:01,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:49:01,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:49:01,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748252488] [2022-12-14 10:49:01,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:49:01,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:49:01,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:49:01,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:49:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:49:01,113 INFO L87 Difference]: Start difference. First operand 3430 states and 4950 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2022-12-14 10:49:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:49:02,425 INFO L93 Difference]: Finished difference Result 3436 states and 4955 transitions. [2022-12-14 10:49:02,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:49:02,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 212 [2022-12-14 10:49:02,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:49:02,434 INFO L225 Difference]: With dead ends: 3436 [2022-12-14 10:49:02,434 INFO L226 Difference]: Without dead ends: 3434 [2022-12-14 10:49:02,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:49:02,435 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:49:02,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1456 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 10:49:02,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2022-12-14 10:49:02,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3434. [2022-12-14 10:49:02,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 2009 states have (on average 1.2877053260328521) internal successors, (2587), 2067 states have internal predecessors, (2587), 1185 states have call successors, (1185), 242 states have call predecessors, (1185), 237 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-12-14 10:49:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 4953 transitions. [2022-12-14 10:49:02,618 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 4953 transitions. Word has length 212 [2022-12-14 10:49:02,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:49:02,618 INFO L495 AbstractCegarLoop]: Abstraction has 3434 states and 4953 transitions. [2022-12-14 10:49:02,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2022-12-14 10:49:02,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 4953 transitions. [2022-12-14 10:49:02,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-12-14 10:49:02,622 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:49:02,622 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:49:02,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 10:49:02,622 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:49:02,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:49:02,622 INFO L85 PathProgramCache]: Analyzing trace with hash 647143143, now seen corresponding path program 1 times [2022-12-14 10:49:02,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:49:02,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032524279] [2022-12-14 10:49:02,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:02,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:49:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2022-12-14 10:49:03,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:49:03,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032524279] [2022-12-14 10:49:03,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032524279] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:49:03,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:49:03,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:49:03,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228128189] [2022-12-14 10:49:03,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:49:03,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:49:03,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:49:03,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:49:03,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:49:03,011 INFO L87 Difference]: Start difference. First operand 3434 states and 4953 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (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) [2022-12-14 10:49:04,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:49:04,766 INFO L93 Difference]: Finished difference Result 3548 states and 5070 transitions. [2022-12-14 10:49:04,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:49:04,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (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 213 [2022-12-14 10:49:04,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:49:04,774 INFO L225 Difference]: With dead ends: 3548 [2022-12-14 10:49:04,774 INFO L226 Difference]: Without dead ends: 3546 [2022-12-14 10:49:04,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:49:04,775 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 1245 mSDsluCounter, 2851 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 4170 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:49:04,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 4170 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 10:49:04,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3546 states. [2022-12-14 10:49:04,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3546 to 3546. [2022-12-14 10:49:04,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3546 states, 2070 states have (on average 1.2821256038647344) internal successors, (2654), 2132 states have internal predecessors, (2654), 1209 states have call successors, (1209), 269 states have call predecessors, (1209), 264 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-12-14 10:49:05,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 5068 transitions. [2022-12-14 10:49:05,007 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 5068 transitions. Word has length 213 [2022-12-14 10:49:05,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:49:05,007 INFO L495 AbstractCegarLoop]: Abstraction has 3546 states and 5068 transitions. [2022-12-14 10:49:05,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (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) [2022-12-14 10:49:05,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 5068 transitions. [2022-12-14 10:49:05,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-12-14 10:49:05,010 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:49:05,010 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:49:05,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 10:49:05,010 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)] === [2022-12-14 10:49:05,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:49:05,010 INFO L85 PathProgramCache]: Analyzing trace with hash -184878881, now seen corresponding path program 1 times [2022-12-14 10:49:05,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:49:05,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117501810] [2022-12-14 10:49:05,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:05,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:49:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2022-12-14 10:49:05,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:49:05,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117501810] [2022-12-14 10:49:05,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117501810] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:49:05,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:49:05,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:49:05,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417582642] [2022-12-14 10:49:05,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:49:05,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:49:05,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:49:05,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:49:05,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:49:05,378 INFO L87 Difference]: Start difference. First operand 3546 states and 5068 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (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) [2022-12-14 10:49:07,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:49:07,197 INFO L93 Difference]: Finished difference Result 3552 states and 5073 transitions. [2022-12-14 10:49:07,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:49:07,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (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 218 [2022-12-14 10:49:07,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:49:07,207 INFO L225 Difference]: With dead ends: 3552 [2022-12-14 10:49:07,207 INFO L226 Difference]: Without dead ends: 3550 [2022-12-14 10:49:07,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:49:07,208 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1451 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:49:07,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 10:49:07,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2022-12-14 10:49:07,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 3550. [2022-12-14 10:49:07,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 2073 states have (on average 1.281717317896768) internal successors, (2657), 2135 states have internal predecessors, (2657), 1209 states have call successors, (1209), 270 states have call predecessors, (1209), 265 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-12-14 10:49:07,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 5071 transitions. [2022-12-14 10:49:07,484 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 5071 transitions. Word has length 218 [2022-12-14 10:49:07,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:49:07,484 INFO L495 AbstractCegarLoop]: Abstraction has 3550 states and 5071 transitions. [2022-12-14 10:49:07,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (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) [2022-12-14 10:49:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 5071 transitions. [2022-12-14 10:49:07,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-12-14 10:49:07,487 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:49:07,487 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 9, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:49:07,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 10:49:07,487 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)] === [2022-12-14 10:49:07,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:49:07,488 INFO L85 PathProgramCache]: Analyzing trace with hash -161418351, now seen corresponding path program 1 times [2022-12-14 10:49:07,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:49:07,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794806912] [2022-12-14 10:49:07,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:07,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:49:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2022-12-14 10:49:07,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:49:07,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794806912] [2022-12-14 10:49:07,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794806912] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:49:07,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:49:07,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:49:07,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804551425] [2022-12-14 10:49:07,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:49:07,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:49:07,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:49:07,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:49:07,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:49:07,805 INFO L87 Difference]: Start difference. First operand 3550 states and 5071 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-12-14 10:49:10,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:49:10,294 INFO L93 Difference]: Finished difference Result 3556 states and 5076 transitions. [2022-12-14 10:49:10,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:49:10,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 226 [2022-12-14 10:49:10,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:49:10,303 INFO L225 Difference]: With dead ends: 3556 [2022-12-14 10:49:10,303 INFO L226 Difference]: Without dead ends: 3554 [2022-12-14 10:49:10,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:49:10,305 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:49:10,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 10:49:10,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2022-12-14 10:49:10,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 3554. [2022-12-14 10:49:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 2076 states have (on average 1.28131021194605) internal successors, (2660), 2138 states have internal predecessors, (2660), 1209 states have call successors, (1209), 271 states have call predecessors, (1209), 266 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-12-14 10:49:10,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 5074 transitions. [2022-12-14 10:49:10,553 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 5074 transitions. Word has length 226 [2022-12-14 10:49:10,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:49:10,554 INFO L495 AbstractCegarLoop]: Abstraction has 3554 states and 5074 transitions. [2022-12-14 10:49:10,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-12-14 10:49:10,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 5074 transitions. [2022-12-14 10:49:10,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-12-14 10:49:10,556 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:49:10,557 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 10, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:49:10,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 10:49:10,557 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)] === [2022-12-14 10:49:10,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:49:10,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1330851317, now seen corresponding path program 1 times [2022-12-14 10:49:10,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:49:10,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967423928] [2022-12-14 10:49:10,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:10,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:49:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 814 trivial. 0 not checked. [2022-12-14 10:49:10,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:49:10,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967423928] [2022-12-14 10:49:10,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967423928] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:49:10,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:49:10,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:49:10,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996584125] [2022-12-14 10:49:10,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:49:10,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:49:10,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:49:10,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:49:10,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:49:10,881 INFO L87 Difference]: Start difference. First operand 3554 states and 5074 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 10:49:12,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:49:12,691 INFO L93 Difference]: Finished difference Result 3560 states and 5079 transitions. [2022-12-14 10:49:12,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:49:12,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 231 [2022-12-14 10:49:12,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:49:12,699 INFO L225 Difference]: With dead ends: 3560 [2022-12-14 10:49:12,699 INFO L226 Difference]: Without dead ends: 3558 [2022-12-14 10:49:12,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:49:12,701 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:49:12,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 10:49:12,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2022-12-14 10:49:12,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 3558. [2022-12-14 10:49:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 2079 states have (on average 1.280904280904281) internal successors, (2663), 2141 states have internal predecessors, (2663), 1209 states have call successors, (1209), 272 states have call predecessors, (1209), 267 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-12-14 10:49:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 5077 transitions. [2022-12-14 10:49:12,949 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 5077 transitions. Word has length 231 [2022-12-14 10:49:12,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:49:12,949 INFO L495 AbstractCegarLoop]: Abstraction has 3558 states and 5077 transitions. [2022-12-14 10:49:12,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 10:49:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 5077 transitions. [2022-12-14 10:49:12,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-12-14 10:49:12,952 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:49:12,952 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 11, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:49:12,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 10:49:12,952 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)] === [2022-12-14 10:49:12,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:49:12,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2076638105, now seen corresponding path program 1 times [2022-12-14 10:49:12,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:49:12,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129975608] [2022-12-14 10:49:12,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:12,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:49:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 843 trivial. 0 not checked. [2022-12-14 10:49:13,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:49:13,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129975608] [2022-12-14 10:49:13,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129975608] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:49:13,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:49:13,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:49:13,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155280083] [2022-12-14 10:49:13,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:49:13,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:49:13,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:49:13,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:49:13,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:49:13,247 INFO L87 Difference]: Start difference. First operand 3558 states and 5077 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-12-14 10:49:14,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:49:14,971 INFO L93 Difference]: Finished difference Result 3564 states and 5082 transitions. [2022-12-14 10:49:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:49:14,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 233 [2022-12-14 10:49:14,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:49:14,979 INFO L225 Difference]: With dead ends: 3564 [2022-12-14 10:49:14,979 INFO L226 Difference]: Without dead ends: 3560 [2022-12-14 10:49:14,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:49:14,980 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1451 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:49:14,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 10:49:14,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2022-12-14 10:49:15,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 3560. [2022-12-14 10:49:15,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 2081 states have (on average 1.280153772224892) internal successors, (2664), 2142 states have internal predecessors, (2664), 1209 states have call successors, (1209), 273 states have call predecessors, (1209), 267 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-12-14 10:49:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 5078 transitions. [2022-12-14 10:49:15,242 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 5078 transitions. Word has length 233 [2022-12-14 10:49:15,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:49:15,242 INFO L495 AbstractCegarLoop]: Abstraction has 3560 states and 5078 transitions. [2022-12-14 10:49:15,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-12-14 10:49:15,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 5078 transitions. [2022-12-14 10:49:15,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-12-14 10:49:15,245 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:49:15,245 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 12, 11, 11, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:49:15,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 10:49:15,245 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)] === [2022-12-14 10:49:15,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:49:15,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1567419369, now seen corresponding path program 1 times [2022-12-14 10:49:15,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:49:15,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138372554] [2022-12-14 10:49:15,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:15,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:49:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:15,551 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 891 trivial. 0 not checked. [2022-12-14 10:49:15,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:49:15,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138372554] [2022-12-14 10:49:15,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138372554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:49:15,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:49:15,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:49:15,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638517419] [2022-12-14 10:49:15,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:49:15,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:49:15,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:49:15,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:49:15,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:49:15,554 INFO L87 Difference]: Start difference. First operand 3560 states and 5078 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-12-14 10:49:17,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:49:17,544 INFO L93 Difference]: Finished difference Result 3560 states and 5078 transitions. [2022-12-14 10:49:17,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:49:17,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 242 [2022-12-14 10:49:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:49:17,552 INFO L225 Difference]: With dead ends: 3560 [2022-12-14 10:49:17,552 INFO L226 Difference]: Without dead ends: 3479 [2022-12-14 10:49:17,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:49:17,553 INFO L413 NwaCegarLoop]: 1305 mSDtfsCounter, 1446 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:49:17,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 3899 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 10:49:17,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2022-12-14 10:49:17,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3479. [2022-12-14 10:49:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 2041 states have (on average 1.282704556589907) internal successors, (2618), 2096 states have internal predecessors, (2618), 1182 states have call successors, (1182), 258 states have call predecessors, (1182), 254 states have return successors, (1182), 1166 states have call predecessors, (1182), 1182 states have call successors, (1182) [2022-12-14 10:49:17,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 4982 transitions. [2022-12-14 10:49:17,820 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 4982 transitions. Word has length 242 [2022-12-14 10:49:17,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:49:17,820 INFO L495 AbstractCegarLoop]: Abstraction has 3479 states and 4982 transitions. [2022-12-14 10:49:17,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-12-14 10:49:17,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 4982 transitions. [2022-12-14 10:49:17,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-12-14 10:49:17,823 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:49:17,823 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 12, 12, 12, 12, 12, 12, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:49:17,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 10:49:17,823 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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)] === [2022-12-14 10:49:17,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:49:17,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1207071153, now seen corresponding path program 1 times [2022-12-14 10:49:17,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:49:17,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377205728] [2022-12-14 10:49:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:17,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:49:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:18,179 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2022-12-14 10:49:18,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:49:18,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377205728] [2022-12-14 10:49:18,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377205728] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:49:18,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:49:18,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:49:18,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573770892] [2022-12-14 10:49:18,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:49:18,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:49:18,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:49:18,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:49:18,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:49:18,182 INFO L87 Difference]: Start difference. First operand 3479 states and 4982 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-12-14 10:49:20,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:49:20,193 INFO L93 Difference]: Finished difference Result 5949 states and 8505 transitions. [2022-12-14 10:49:20,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:49:20,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 247 [2022-12-14 10:49:20,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:49:20,198 INFO L225 Difference]: With dead ends: 5949 [2022-12-14 10:49:20,198 INFO L226 Difference]: Without dead ends: 2513 [2022-12-14 10:49:20,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:49:20,205 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 716 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 10:49:20,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 2919 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 10:49:20,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2022-12-14 10:49:20,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2507. [2022-12-14 10:49:20,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 1501 states have (on average 1.2698201199200534) internal successors, (1906), 1538 states have internal predecessors, (1906), 815 states have call successors, (815), 191 states have call predecessors, (815), 189 states have return successors, (815), 804 states have call predecessors, (815), 815 states have call successors, (815) [2022-12-14 10:49:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3536 transitions. [2022-12-14 10:49:20,395 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3536 transitions. Word has length 247 [2022-12-14 10:49:20,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:49:20,395 INFO L495 AbstractCegarLoop]: Abstraction has 2507 states and 3536 transitions. [2022-12-14 10:49:20,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-12-14 10:49:20,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3536 transitions. [2022-12-14 10:49:20,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-12-14 10:49:20,397 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:49:20,397 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 12, 12, 12, 12, 12, 12, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:49:20,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 10:49:20,397 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)] === [2022-12-14 10:49:20,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:49:20,398 INFO L85 PathProgramCache]: Analyzing trace with hash 225324530, now seen corresponding path program 1 times [2022-12-14 10:49:20,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:49:20,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497921777] [2022-12-14 10:49:20,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:20,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:49:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-12-14 10:49:20,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:49:20,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497921777] [2022-12-14 10:49:20,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497921777] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:49:20,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:49:20,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:49:20,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200452908] [2022-12-14 10:49:20,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:49:20,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:49:20,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:49:20,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:49:20,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:49:20,683 INFO L87 Difference]: Start difference. First operand 2507 states and 3536 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-12-14 10:49:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:49:22,182 INFO L93 Difference]: Finished difference Result 5577 states and 7886 transitions. [2022-12-14 10:49:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:49:22,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 294 [2022-12-14 10:49:22,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:49:22,189 INFO L225 Difference]: With dead ends: 5577 [2022-12-14 10:49:22,190 INFO L226 Difference]: Without dead ends: 3172 [2022-12-14 10:49:22,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:49:22,194 INFO L413 NwaCegarLoop]: 1854 mSDtfsCounter, 724 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:49:22,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 3081 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 10:49:22,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2022-12-14 10:49:22,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 3166. [2022-12-14 10:49:22,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3166 states, 1899 states have (on average 1.2669826224328593) internal successors, (2406), 1945 states have internal predecessors, (2406), 1020 states have call successors, (1020), 247 states have call predecessors, (1020), 245 states have return successors, (1020), 1006 states have call predecessors, (1020), 1020 states have call successors, (1020) [2022-12-14 10:49:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3166 states to 3166 states and 4446 transitions. [2022-12-14 10:49:22,428 INFO L78 Accepts]: Start accepts. Automaton has 3166 states and 4446 transitions. Word has length 294 [2022-12-14 10:49:22,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:49:22,428 INFO L495 AbstractCegarLoop]: Abstraction has 3166 states and 4446 transitions. [2022-12-14 10:49:22,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-12-14 10:49:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3166 states and 4446 transitions. [2022-12-14 10:49:22,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-12-14 10:49:22,431 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:49:22,431 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 12, 12, 12, 12, 12, 12, 7, 7, 4, 3, 3, 3, 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] [2022-12-14 10:49:22,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 10:49:22,431 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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)] === [2022-12-14 10:49:22,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:49:22,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1670150524, now seen corresponding path program 1 times [2022-12-14 10:49:22,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:49:22,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115036757] [2022-12-14 10:49:22,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:22,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:49:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2022-12-14 10:49:22,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:49:22,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115036757] [2022-12-14 10:49:22,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115036757] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:49:22,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:49:22,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:49:22,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502608958] [2022-12-14 10:49:22,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:49:22,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:49:22,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:49:22,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:49:22,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:49:22,699 INFO L87 Difference]: Start difference. First operand 3166 states and 4446 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, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-12-14 10:49:24,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:49:24,227 INFO L93 Difference]: Finished difference Result 6242 states and 8809 transitions. [2022-12-14 10:49:24,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:49:24,227 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, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 338 [2022-12-14 10:49:24,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:49:24,234 INFO L225 Difference]: With dead ends: 6242 [2022-12-14 10:49:24,234 INFO L226 Difference]: Without dead ends: 3178 [2022-12-14 10:49:24,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:49:24,240 INFO L413 NwaCegarLoop]: 1261 mSDtfsCounter, 1 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:49:24,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2517 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 10:49:24,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2022-12-14 10:49:24,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 3170. [2022-12-14 10:49:24,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3170 states, 1903 states have (on average 1.2664214398318445) internal successors, (2410), 1949 states have internal predecessors, (2410), 1020 states have call successors, (1020), 247 states have call predecessors, (1020), 245 states have return successors, (1020), 1006 states have call predecessors, (1020), 1020 states have call successors, (1020) [2022-12-14 10:49:24,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 4450 transitions. [2022-12-14 10:49:24,465 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 4450 transitions. Word has length 338 [2022-12-14 10:49:24,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:49:24,466 INFO L495 AbstractCegarLoop]: Abstraction has 3170 states and 4450 transitions. [2022-12-14 10:49:24,466 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, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-12-14 10:49:24,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 4450 transitions. [2022-12-14 10:49:24,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-12-14 10:49:24,468 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:49:24,469 INFO L195 NwaCegarLoop]: trace histogram [18, 15, 12, 12, 12, 12, 12, 12, 7, 7, 4, 3, 3, 3, 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] [2022-12-14 10:49:24,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 10:49:24,469 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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)] === [2022-12-14 10:49:24,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:49:24,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2105400706, now seen corresponding path program 1 times [2022-12-14 10:49:24,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:49:24,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538190835] [2022-12-14 10:49:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:24,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:49:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2022-12-14 10:49:24,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:49:24,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538190835] [2022-12-14 10:49:24,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538190835] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:49:24,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903532984] [2022-12-14 10:49:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:24,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:49:24,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:49:24,782 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:49:24,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24fa1ff8-878e-4a2b-91bb-960f0c9f7628/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:49:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:25,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 4608 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:49:25,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:49:25,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 106 proven. 1 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2022-12-14 10:49:25,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:49:25,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2022-12-14 10:49:25,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903532984] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:49:25,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [515519052] [2022-12-14 10:49:25,735 INFO L159 IcfgInterpreter]: Started Sifa with 176 locations of interest [2022-12-14 10:49:25,735 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:49:25,739 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:49:25,743 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:49:25,744 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:49:38,451 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 [2022-12-14 10:49:39,739 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 [2022-12-14 10:49:41,244 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