./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2be7d4-ede0-444e-ad24-ac72b3690b03/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2be7d4-ede0-444e-ad24-ac72b3690b03/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2be7d4-ede0-444e-ad24-ac72b3690b03/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2be7d4-ede0-444e-ad24-ac72b3690b03/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2be7d4-ede0-444e-ad24-ac72b3690b03/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2be7d4-ede0-444e-ad24-ac72b3690b03/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3fe54d83d46de95e8e0767545626d085bd64ef94fa067827f6d89c4bc8eb39d0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:20:24,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:20:24,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:20:24,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:20:24,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:20:24,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:20:24,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:20:24,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:20:24,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:20:24,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:20:24,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:20:24,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:20:24,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:20:24,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:20:24,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:20:24,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:20:24,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:20:24,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:20:24,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:20:24,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:20:24,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:20:24,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:20:24,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:20:24,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:20:24,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:20:24,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:20:24,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:20:24,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:20:24,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:20:24,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:20:24,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:20:24,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:20:24,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:20:24,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:20:24,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:20:24,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:20:24,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:20:24,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:20:24,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:20:24,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:20:24,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:20:24,401 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2be7d4-ede0-444e-ad24-ac72b3690b03/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:20:24,447 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:20:24,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:20:24,448 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:20:24,448 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:20:24,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:20:24,449 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:20:24,450 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:20:24,450 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:20:24,450 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:20:24,451 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:20:24,452 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:20:24,452 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:20:24,452 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:20:24,452 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:20:24,453 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:20:24,453 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:20:24,453 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:20:24,454 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:20:24,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:20:24,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:20:24,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:20:24,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:20:24,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:20:24,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:20:24,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:20:24,457 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:20:24,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:20:24,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:20:24,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:20:24,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:20:24,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:20:24,459 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:20:24,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:20:24,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:20:24,459 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:20:24,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:20:24,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:20:24,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:20:24,461 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_5f2be7d4-ede0-444e-ad24-ac72b3690b03/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2be7d4-ede0-444e-ad24-ac72b3690b03/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fe54d83d46de95e8e0767545626d085bd64ef94fa067827f6d89c4bc8eb39d0 [2022-11-26 00:20:24,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:20:24,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:20:24,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:20:24,783 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:20:24,784 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:20:24,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2be7d4-ede0-444e-ad24-ac72b3690b03/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2022-11-26 00:20:28,121 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:20:28,820 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:20:28,821 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2be7d4-ede0-444e-ad24-ac72b3690b03/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2022-11-26 00:20:28,876 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2be7d4-ede0-444e-ad24-ac72b3690b03/bin/utaipan-ByfvJB40ur/data/f753b6a69/bd20887fb76a48b4832f9cf107ff0e70/FLAG667b395db [2022-11-26 00:20:28,896 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2be7d4-ede0-444e-ad24-ac72b3690b03/bin/utaipan-ByfvJB40ur/data/f753b6a69/bd20887fb76a48b4832f9cf107ff0e70 [2022-11-26 00:20:28,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:20:28,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:20:28,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:20:28,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:20:28,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:20:28,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:20:28" (1/1) ... [2022-11-26 00:20:28,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f779d09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:28, skipping insertion in model container [2022-11-26 00:20:28,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:20:28" (1/1) ... [2022-11-26 00:20:28,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:20:29,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:20:29,999 WARN L623 FunctionHandler]: Unknown extern function __local_bh_disable_ip [2022-11-26 00:20:30,012 WARN L623 FunctionHandler]: Unknown extern function __local_bh_enable_ip [2022-11-26 00:20:30,052 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-11-26 00:20:30,069 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_bh [2022-11-26 00:20:30,085 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-11-26 00:20:30,107 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_bh [2022-11-26 00:20:30,128 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-11-26 00:20:30,187 WARN L623 FunctionHandler]: Unknown extern function ioremap_nocache [2022-11-26 00:20:30,324 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-11-26 00:20:30,336 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-11-26 00:20:30,337 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-11-26 00:20:30,352 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-11-26 00:20:30,372 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-11-26 00:20:30,385 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-11-26 00:20:30,393 WARN L623 FunctionHandler]: Unknown extern function debug_dma_mapping_error [2022-11-26 00:20:30,428 WARN L623 FunctionHandler]: Unknown extern function debug_dma_alloc_coherent [2022-11-26 00:20:30,442 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-26 00:20:30,446 WARN L623 FunctionHandler]: Unknown extern function debug_dma_free_coherent [2022-11-26 00:20:30,488 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-11-26 00:20:30,539 WARN L623 FunctionHandler]: Unknown extern function __napi_schedule [2022-11-26 00:20:30,549 WARN L623 FunctionHandler]: Unknown extern function __might_sleep [2022-11-26 00:20:30,558 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-11-26 00:20:30,618 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-26 00:20:30,632 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-11-26 00:20:30,633 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-26 00:20:30,644 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-26 00:20:30,645 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 00:20:30,675 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_any [2022-11-26 00:20:30,703 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-26 00:20:30,704 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-26 00:20:30,705 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-26 00:20:30,706 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-26 00:20:30,706 WARN L623 FunctionHandler]: Unknown extern function __bad_size_call_parameter [2022-11-26 00:20:30,720 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-26 00:20:30,721 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-26 00:20:30,722 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-26 00:20:30,723 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-26 00:20:30,723 WARN L623 FunctionHandler]: Unknown extern function __bad_size_call_parameter [2022-11-26 00:20:30,802 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-11-26 00:20:30,840 WARN L623 FunctionHandler]: Unknown extern function irq_set_irq_wake [2022-11-26 00:20:30,845 WARN L623 FunctionHandler]: Unknown extern function irq_set_irq_wake [2022-11-26 00:20:30,875 WARN L623 FunctionHandler]: Unknown extern function get_random_bytes [2022-11-26 00:20:30,957 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 00:20:30,968 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:30,979 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:30,982 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:30,985 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:31,029 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:31,038 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:31,042 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:31,045 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-26 00:20:31,046 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-26 00:20:31,067 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-26 00:20:31,068 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-26 00:20:31,075 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:31,078 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-26 00:20:31,102 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:31,117 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-26 00:20:31,123 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-26 00:20:31,131 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:31,134 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:31,134 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-26 00:20:31,135 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-11-26 00:20:31,136 WARN L623 FunctionHandler]: Unknown extern function netif_receive_skb [2022-11-26 00:20:31,136 WARN L623 FunctionHandler]: Unknown extern function napi_gro_receive [2022-11-26 00:20:31,142 WARN L623 FunctionHandler]: Unknown extern function napi_complete [2022-11-26 00:20:31,155 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:31,157 WARN L623 FunctionHandler]: Unknown extern function crc32_le [2022-11-26 00:20:31,157 WARN L623 FunctionHandler]: Unknown extern function bitrev32 [2022-11-26 00:20:31,162 WARN L623 FunctionHandler]: Unknown extern function crc32_le [2022-11-26 00:20:31,162 WARN L623 FunctionHandler]: Unknown extern function bitrev32 [2022-11-26 00:20:31,170 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:31,178 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:31,185 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:31,186 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:31,187 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:31,188 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:31,189 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:31,195 WARN L623 FunctionHandler]: Unknown extern function disable_irq [2022-11-26 00:20:31,195 WARN L623 FunctionHandler]: Unknown extern function enable_irq [2022-11-26 00:20:31,252 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-26 00:20:31,264 WARN L623 FunctionHandler]: Unknown extern function device_set_wakeup_enable [2022-11-26 00:20:31,264 WARN L623 FunctionHandler]: Unknown extern function device_set_wakeup_enable [2022-11-26 00:20:31,271 WARN L623 FunctionHandler]: Unknown extern function platform_get_resource [2022-11-26 00:20:31,272 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-11-26 00:20:31,273 WARN L623 FunctionHandler]: Unknown extern function ether_setup [2022-11-26 00:20:31,274 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-26 00:20:31,274 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-11-26 00:20:31,275 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-11-26 00:20:31,276 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:31,277 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:20:31,278 WARN L623 FunctionHandler]: Unknown extern function platform_get_irq [2022-11-26 00:20:31,278 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:31,279 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:31,280 WARN L623 FunctionHandler]: Unknown extern function platform_get_irq [2022-11-26 00:20:31,280 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:31,281 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:31,282 WARN L623 FunctionHandler]: Unknown extern function device_set_wakeup_capable [2022-11-26 00:20:31,284 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-26 00:20:31,284 WARN L623 FunctionHandler]: Unknown extern function netif_napi_add [2022-11-26 00:20:31,285 WARN L623 FunctionHandler]: Unknown extern function netif_napi_del [2022-11-26 00:20:31,285 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-11-26 00:20:31,286 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-11-26 00:20:31,292 WARN L623 FunctionHandler]: Unknown extern function netif_napi_del [2022-11-26 00:20:31,292 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-11-26 00:20:31,293 WARN L623 FunctionHandler]: Unknown extern function platform_get_resource [2022-11-26 00:20:31,293 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-11-26 00:20:31,304 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-26 00:20:31,312 WARN L623 FunctionHandler]: Unknown extern function netif_device_attach [2022-11-26 00:20:31,685 WARN L623 FunctionHandler]: Unknown extern function ethtool_op_get_link [2022-11-26 00:20:31,686 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-26 00:20:31,691 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-26 00:20:31,691 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-26 00:20:31,693 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-26 00:20:31,694 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-26 00:20:31,703 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-11-26 00:20:31,720 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-11-26 00:20:31,731 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-11-26 00:20:31,733 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-11-26 00:20:31,734 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-26 00:20:31,734 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-26 00:20:31,735 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-26 00:20:31,735 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-26 00:20:31,736 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-26 00:20:31,736 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-26 00:20:31,737 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-26 00:20:31,737 WARN L623 FunctionHandler]: Unknown extern function __platform_driver_register [2022-11-26 00:20:31,738 WARN L623 FunctionHandler]: Unknown extern function platform_driver_unregister [2022-11-26 00:20:31,790 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-11-26 00:20:31,791 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-11-26 00:20:31,800 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-11-26 00:20:32,340 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_5f2be7d4-ede0-444e-ad24-ac72b3690b03/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358326,358339] [2022-11-26 00:20:32,345 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_5f2be7d4-ede0-444e-ad24-ac72b3690b03/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358495,358508] [2022-11-26 00:20:32,346 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_5f2be7d4-ede0-444e-ad24-ac72b3690b03/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358662,358675] [2022-11-26 00:20:32,347 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_5f2be7d4-ede0-444e-ad24-ac72b3690b03/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358830,358843] [2022-11-26 00:20:32,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:20:32,527 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:20:32,670 WARN L623 FunctionHandler]: Unknown extern function __local_bh_disable_ip [2022-11-26 00:20:32,670 WARN L623 FunctionHandler]: Unknown extern function __local_bh_enable_ip [2022-11-26 00:20:32,671 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-11-26 00:20:32,672 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_bh [2022-11-26 00:20:32,672 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-11-26 00:20:32,673 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_bh [2022-11-26 00:20:32,673 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-11-26 00:20:32,676 WARN L623 FunctionHandler]: Unknown extern function ioremap_nocache [2022-11-26 00:20:32,689 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-11-26 00:20:32,695 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-11-26 00:20:32,695 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-11-26 00:20:32,699 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-11-26 00:20:32,700 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-11-26 00:20:32,702 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-11-26 00:20:32,703 WARN L623 FunctionHandler]: Unknown extern function debug_dma_mapping_error [2022-11-26 00:20:32,707 WARN L623 FunctionHandler]: Unknown extern function debug_dma_alloc_coherent [2022-11-26 00:20:32,708 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-26 00:20:32,709 WARN L623 FunctionHandler]: Unknown extern function debug_dma_free_coherent [2022-11-26 00:20:32,718 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-11-26 00:20:32,721 WARN L623 FunctionHandler]: Unknown extern function __napi_schedule [2022-11-26 00:20:32,722 WARN L623 FunctionHandler]: Unknown extern function __might_sleep [2022-11-26 00:20:32,722 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-11-26 00:20:32,724 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-26 00:20:32,726 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-11-26 00:20:32,727 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-26 00:20:32,728 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-26 00:20:32,729 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 00:20:32,731 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_any [2022-11-26 00:20:32,733 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-26 00:20:32,736 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-26 00:20:32,737 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-26 00:20:32,737 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-26 00:20:32,738 WARN L623 FunctionHandler]: Unknown extern function __bad_size_call_parameter [2022-11-26 00:20:32,740 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-26 00:20:32,741 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-26 00:20:32,741 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-26 00:20:32,742 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-26 00:20:32,742 WARN L623 FunctionHandler]: Unknown extern function __bad_size_call_parameter [2022-11-26 00:20:32,744 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-11-26 00:20:32,745 WARN L623 FunctionHandler]: Unknown extern function irq_set_irq_wake [2022-11-26 00:20:32,746 WARN L623 FunctionHandler]: Unknown extern function irq_set_irq_wake [2022-11-26 00:20:32,748 WARN L623 FunctionHandler]: Unknown extern function get_random_bytes [2022-11-26 00:20:32,755 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 00:20:32,758 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:32,763 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:32,766 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:32,769 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:32,793 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:32,799 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:32,805 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:32,806 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-26 00:20:32,807 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-26 00:20:32,811 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-26 00:20:32,812 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-26 00:20:32,815 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:32,816 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-26 00:20:32,826 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:32,831 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-26 00:20:32,836 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-26 00:20:32,845 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:32,847 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:32,850 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-26 00:20:32,851 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-11-26 00:20:32,851 WARN L623 FunctionHandler]: Unknown extern function netif_receive_skb [2022-11-26 00:20:32,852 WARN L623 FunctionHandler]: Unknown extern function napi_gro_receive [2022-11-26 00:20:32,853 WARN L623 FunctionHandler]: Unknown extern function napi_complete [2022-11-26 00:20:32,856 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:32,857 WARN L623 FunctionHandler]: Unknown extern function crc32_le [2022-11-26 00:20:32,857 WARN L623 FunctionHandler]: Unknown extern function bitrev32 [2022-11-26 00:20:32,859 WARN L623 FunctionHandler]: Unknown extern function crc32_le [2022-11-26 00:20:32,860 WARN L623 FunctionHandler]: Unknown extern function bitrev32 [2022-11-26 00:20:32,863 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:32,866 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 00:20:32,868 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:32,869 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:32,869 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:32,870 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:32,871 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:32,872 WARN L623 FunctionHandler]: Unknown extern function disable_irq [2022-11-26 00:20:32,873 WARN L623 FunctionHandler]: Unknown extern function enable_irq [2022-11-26 00:20:32,888 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-26 00:20:32,890 WARN L623 FunctionHandler]: Unknown extern function device_set_wakeup_enable [2022-11-26 00:20:32,891 WARN L623 FunctionHandler]: Unknown extern function device_set_wakeup_enable [2022-11-26 00:20:32,893 WARN L623 FunctionHandler]: Unknown extern function platform_get_resource [2022-11-26 00:20:32,894 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-11-26 00:20:32,897 WARN L623 FunctionHandler]: Unknown extern function ether_setup [2022-11-26 00:20:32,897 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-26 00:20:32,898 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-11-26 00:20:32,899 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-11-26 00:20:32,900 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:32,900 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 00:20:32,901 WARN L623 FunctionHandler]: Unknown extern function platform_get_irq [2022-11-26 00:20:32,902 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:32,902 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:32,903 WARN L623 FunctionHandler]: Unknown extern function platform_get_irq [2022-11-26 00:20:32,904 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:32,905 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 00:20:32,906 WARN L623 FunctionHandler]: Unknown extern function device_set_wakeup_capable [2022-11-26 00:20:32,907 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-26 00:20:32,908 WARN L623 FunctionHandler]: Unknown extern function netif_napi_add [2022-11-26 00:20:32,908 WARN L623 FunctionHandler]: Unknown extern function netif_napi_del [2022-11-26 00:20:32,909 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-11-26 00:20:32,909 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-11-26 00:20:32,912 WARN L623 FunctionHandler]: Unknown extern function netif_napi_del [2022-11-26 00:20:32,913 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-11-26 00:20:32,913 WARN L623 FunctionHandler]: Unknown extern function platform_get_resource [2022-11-26 00:20:32,914 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-11-26 00:20:32,916 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-26 00:20:32,918 WARN L623 FunctionHandler]: Unknown extern function netif_device_attach [2022-11-26 00:20:32,934 WARN L623 FunctionHandler]: Unknown extern function ethtool_op_get_link [2022-11-26 00:20:32,935 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-26 00:20:32,938 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-26 00:20:32,938 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-26 00:20:32,939 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-26 00:20:32,940 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-26 00:20:32,947 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-11-26 00:20:33,026 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-11-26 00:20:33,038 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-11-26 00:20:33,040 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-11-26 00:20:33,041 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-26 00:20:33,041 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-26 00:20:33,042 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-26 00:20:33,042 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-26 00:20:33,043 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-11-26 00:20:33,043 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-26 00:20:33,044 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-26 00:20:33,044 WARN L623 FunctionHandler]: Unknown extern function __platform_driver_register [2022-11-26 00:20:33,045 WARN L623 FunctionHandler]: Unknown extern function platform_driver_unregister [2022-11-26 00:20:33,048 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-11-26 00:20:33,049 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-11-26 00:20:33,049 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-11-26 00:20:33,074 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_5f2be7d4-ede0-444e-ad24-ac72b3690b03/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358326,358339] [2022-11-26 00:20:33,075 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_5f2be7d4-ede0-444e-ad24-ac72b3690b03/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358495,358508] [2022-11-26 00:20:33,075 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_5f2be7d4-ede0-444e-ad24-ac72b3690b03/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358662,358675] [2022-11-26 00:20:33,076 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_5f2be7d4-ede0-444e-ad24-ac72b3690b03/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358830,358843] [2022-11-26 00:20:33,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:20:33,389 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:20:33,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:33 WrapperNode [2022-11-26 00:20:33,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:20:33,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:20:33,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:20:33,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:20:33,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:33" (1/1) ... [2022-11-26 00:20:33,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:33" (1/1) ... [2022-11-26 00:20:33,798 INFO L138 Inliner]: procedures = 502, calls = 2414, calls flagged for inlining = 253, calls inlined = 226, statements flattened = 5432 [2022-11-26 00:20:33,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:20:33,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:20:33,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:20:33,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:20:33,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:33" (1/1) ... [2022-11-26 00:20:33,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:33" (1/1) ... [2022-11-26 00:20:33,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:33" (1/1) ... [2022-11-26 00:20:33,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:33" (1/1) ... [2022-11-26 00:20:34,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:33" (1/1) ... [2022-11-26 00:20:34,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:33" (1/1) ... [2022-11-26 00:20:34,141 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:33" (1/1) ... [2022-11-26 00:20:34,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:33" (1/1) ... [2022-11-26 00:20:34,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:20:34,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:20:34,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:20:34,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:20:34,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:33" (1/1) ... [2022-11-26 00:20:34,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:20:34,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2be7d4-ede0-444e-ad24-ac72b3690b03/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:20:34,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2be7d4-ede0-444e-ad24-ac72b3690b03/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:20:34,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f2be7d4-ede0-444e-ad24-ac72b3690b03/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:20:34,319 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2022-11-26 00:20:34,319 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2022-11-26 00:20:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-26 00:20:34,320 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-26 00:20:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2022-11-26 00:20:34,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2022-11-26 00:20:34,320 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_buf_addr [2022-11-26 00:20:34,321 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_buf_addr [2022-11-26 00:20:34,321 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-26 00:20:34,321 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-26 00:20:34,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-26 00:20:34,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-26 00:20:34,322 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_interrupt [2022-11-26 00:20:34,322 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_interrupt [2022-11-26 00:20:34,322 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-26 00:20:34,322 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-26 00:20:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_rx_refill [2022-11-26 00:20:34,323 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_rx_refill [2022-11-26 00:20:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-26 00:20:34,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-26 00:20:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2022-11-26 00:20:34,324 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2022-11-26 00:20:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-26 00:20:34,324 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-26 00:20:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-26 00:20:34,324 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-26 00:20:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_poll_controller [2022-11-26 00:20:34,325 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_poll_controller [2022-11-26 00:20:34,325 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-26 00:20:34,325 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-26 00:20:34,325 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_set_mac_addr [2022-11-26 00:20:34,325 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_set_mac_addr [2022-11-26 00:20:34,325 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_unlock [2022-11-26 00:20:34,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_unlock [2022-11-26 00:20:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_tx_timeout [2022-11-26 00:20:34,326 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_tx_timeout [2022-11-26 00:20:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-26 00:20:34,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-26 00:20:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-26 00:20:34,326 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-26 00:20:34,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-26 00:20:34,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-26 00:20:34,327 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2022-11-26 00:20:34,327 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2022-11-26 00:20:34,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:20:34,327 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-26 00:20:34,327 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-26 00:20:34,328 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-26 00:20:34,328 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-26 00:20:34,328 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-26 00:20:34,328 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-26 00:20:34,328 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_buf_addr_and_size [2022-11-26 00:20:34,328 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_buf_addr_and_size [2022-11-26 00:20:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-26 00:20:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-26 00:20:34,329 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-26 00:20:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_probe [2022-11-26 00:20:34,329 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_probe [2022-11-26 00:20:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-26 00:20:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-26 00:20:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-26 00:20:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:20:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_buf_len [2022-11-26 00:20:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_buf_len [2022-11-26 00:20:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-26 00:20:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-26 00:20:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-26 00:20:34,331 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-26 00:20:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-26 00:20:34,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-26 00:20:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-26 00:20:34,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-26 00:20:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_suspend [2022-11-26 00:20:34,332 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_suspend [2022-11-26 00:20:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_lock [2022-11-26 00:20:34,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_lock [2022-11-26 00:20:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_open [2022-11-26 00:20:34,332 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_open [2022-11-26 00:20:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_buf_len [2022-11-26 00:20:34,332 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_buf_len [2022-11-26 00:20:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2022-11-26 00:20:34,333 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2022-11-26 00:20:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-26 00:20:34,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-26 00:20:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:20:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-26 00:20:34,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-26 00:20:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-26 00:20:34,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-26 00:20:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-26 00:20:34,334 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-26 00:20:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:20:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_pmt [2022-11-26 00:20:34,335 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_pmt [2022-11-26 00:20:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-26 00:20:34,335 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-26 00:20:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-26 00:20:34,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-26 00:20:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 00:20:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_free_tx_skbufs [2022-11-26 00:20:34,336 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_free_tx_skbufs [2022-11-26 00:20:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-26 00:20:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-26 00:20:34,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-26 00:20:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-26 00:20:34,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-26 00:20:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2022-11-26 00:20:34,337 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2022-11-26 00:20:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-26 00:20:34,337 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-26 00:20:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-26 00:20:34,337 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-26 00:20:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-26 00:20:34,337 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-26 00:20:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-26 00:20:34,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-26 00:20:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2022-11-26 00:20:34,338 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2022-11-26 00:20:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-26 00:20:34,339 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-26 00:20:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-26 00:20:34,340 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-26 00:20:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-26 00:20:34,340 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-26 00:20:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:20:34,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:20:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_mac_disable [2022-11-26 00:20:34,340 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_mac_disable [2022-11-26 00:20:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-26 00:20:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-26 00:20:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-26 00:20:34,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-26 00:20:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure desc_init_tx_desc [2022-11-26 00:20:34,341 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_init_tx_desc [2022-11-26 00:20:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-26 00:20:34,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-26 00:20:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-26 00:20:34,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-26 00:20:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-26 00:20:34,342 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-26 00:20:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-26 00:20:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-26 00:20:34,418 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-26 00:20:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-26 00:20:34,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-26 00:20:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2022-11-26 00:20:34,418 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2022-11-26 00:20:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-26 00:20:34,419 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-26 00:20:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2022-11-26 00:20:34,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2022-11-26 00:20:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-26 00:20:34,419 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-26 00:20:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-26 00:20:34,419 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-26 00:20:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_mac_enable [2022-11-26 00:20:34,419 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_mac_enable [2022-11-26 00:20:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-26 00:20:34,419 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-26 00:20:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-26 00:20:34,419 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-26 00:20:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:20:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_stop [2022-11-26 00:20:34,420 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_stop [2022-11-26 00:20:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_tx_owner [2022-11-26 00:20:34,420 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_tx_owner [2022-11-26 00:20:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-26 00:20:34,420 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-26 00:20:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_irq [2022-11-26 00:20:34,420 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_irq [2022-11-26 00:20:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:20:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-26 00:20:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-26 00:20:34,421 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-26 00:20:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-26 00:20:34,421 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-26 00:20:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-26 00:20:34,421 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-26 00:20:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-26 00:20:34,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-26 00:20:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-26 00:20:34,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-26 00:20:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-26 00:20:34,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-26 00:20:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_set_flow_ctrl [2022-11-26 00:20:34,421 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_set_flow_ctrl [2022-11-26 00:20:34,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-26 00:20:34,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-26 00:20:34,422 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_resume [2022-11-26 00:20:34,422 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_resume [2022-11-26 00:20:34,422 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-26 00:20:34,422 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-26 00:20:34,422 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-26 00:20:34,422 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-26 00:20:34,422 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-26 00:20:34,422 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-26 00:20:34,422 INFO L130 BoogieDeclarations]: Found specification of procedure irq_set_irq_wake [2022-11-26 00:20:34,422 INFO L138 BoogieDeclarations]: Found implementation of procedure irq_set_irq_wake [2022-11-26 00:20:34,423 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_tx_fs [2022-11-26 00:20:34,423 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_tx_fs [2022-11-26 00:20:34,423 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-26 00:20:34,423 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-26 00:20:34,423 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_set_rx_mode [2022-11-26 00:20:34,423 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_set_rx_mode [2022-11-26 00:20:34,423 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-26 00:20:34,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-26 00:20:34,423 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-26 00:20:34,423 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-26 00:20:34,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:20:34,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-26 00:20:34,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-26 00:20:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-26 00:20:34,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-26 00:20:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-26 00:20:34,424 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-26 00:20:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-26 00:20:34,424 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-26 00:20:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-26 00:20:34,424 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-26 00:20:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure __readl [2022-11-26 00:20:34,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __readl [2022-11-26 00:20:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-26 00:20:34,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-26 00:20:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-26 00:20:34,425 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-26 00:20:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-26 00:20:34,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-26 00:20:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure __writel [2022-11-26 00:20:34,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __writel [2022-11-26 00:20:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2022-11-26 00:20:34,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2022-11-26 00:20:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-26 00:20:34,425 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-26 00:20:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-26 00:20:34,426 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-26 00:20:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-26 00:20:34,426 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-26 00:20:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_remove [2022-11-26 00:20:34,426 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_remove [2022-11-26 00:20:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:20:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_buf_addr [2022-11-26 00:20:34,429 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_buf_addr [2022-11-26 00:20:34,429 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-26 00:20:34,429 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-26 00:20:34,429 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2022-11-26 00:20:34,429 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2022-11-26 00:20:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-26 00:20:34,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-26 00:20:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_tx_ls [2022-11-26 00:20:34,430 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_tx_ls [2022-11-26 00:20:35,535 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:20:35,540 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:20:36,219 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-26 00:26:53,418 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-26 00:26:53,523 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:26:57,034 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:26:57,035 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-26 00:26:57,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:26:57 BoogieIcfgContainer [2022-11-26 00:26:57,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:26:57,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:26:57,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:26:57,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:26:57,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:20:28" (1/3) ... [2022-11-26 00:26:57,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14227d62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:26:57, skipping insertion in model container [2022-11-26 00:26:57,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:33" (2/3) ... [2022-11-26 00:26:57,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14227d62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:26:57, skipping insertion in model container [2022-11-26 00:26:57,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:26:57" (3/3) ... [2022-11-26 00:26:57,049 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2022-11-26 00:26:57,069 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:26:57,069 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-26 00:26:57,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:26:57,165 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;@6eb174a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:26:57,166 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-26 00:26:57,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 1536 states, 890 states have (on average 1.2651685393258427) internal successors, (1126), 911 states have internal predecessors, (1126), 528 states have call successors, (528), 116 states have call predecessors, (528), 115 states have return successors, (521), 516 states have call predecessors, (521), 521 states have call successors, (521) [2022-11-26 00:26:57,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-26 00:26:57,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:26:57,212 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:26:57,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:26:57,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:26:57,219 INFO L85 PathProgramCache]: Analyzing trace with hash -28605198, now seen corresponding path program 1 times [2022-11-26 00:26:57,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:26:57,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940544226] [2022-11-26 00:26:57,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:26:57,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:26:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:26:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-26 00:26:59,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:26:59,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940544226] [2022-11-26 00:26:59,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940544226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:26:59,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:26:59,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:26:59,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797620864] [2022-11-26 00:26:59,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:26:59,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:26:59,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:26:59,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:26:59,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:26:59,908 INFO L87 Difference]: Start difference. First operand has 1536 states, 890 states have (on average 1.2651685393258427) internal successors, (1126), 911 states have internal predecessors, (1126), 528 states have call successors, (528), 116 states have call predecessors, (528), 115 states have return successors, (521), 516 states have call predecessors, (521), 521 states have call successors, (521) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-11-26 00:27:02,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:27:05,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:27:08,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:27:08,070 INFO L93 Difference]: Finished difference Result 4489 states and 6433 transitions. [2022-11-26 00:27:08,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:27:08,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 147 [2022-11-26 00:27:08,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:27:08,124 INFO L225 Difference]: With dead ends: 4489 [2022-11-26 00:27:08,125 INFO L226 Difference]: Without dead ends: 2968 [2022-11-26 00:27:08,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:27:08,145 INFO L413 NwaCegarLoop]: 2342 mSDtfsCounter, 2071 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 4165 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:27:08,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2071 Valid, 4165 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 640 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-26 00:27:08,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2022-11-26 00:27:08,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2964. [2022-11-26 00:27:08,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 1730 states have (on average 1.2595375722543352) internal successors, (2179), 1770 states have internal predecessors, (2179), 1004 states have call successors, (1004), 228 states have call predecessors, (1004), 227 states have return successors, (1001), 991 states have call predecessors, (1001), 1001 states have call successors, (1001) [2022-11-26 00:27:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 4184 transitions. [2022-11-26 00:27:08,452 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 4184 transitions. Word has length 147 [2022-11-26 00:27:08,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:27:08,456 INFO L495 AbstractCegarLoop]: Abstraction has 2964 states and 4184 transitions. [2022-11-26 00:27:08,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-11-26 00:27:08,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 4184 transitions. [2022-11-26 00:27:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-26 00:27:08,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:27:08,474 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:27:08,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:27:08,475 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:27:08,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:27:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1872096164, now seen corresponding path program 1 times [2022-11-26 00:27:08,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:27:08,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060086536] [2022-11-26 00:27:08,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:27:08,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:27:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:27:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-26 00:27:10,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:27:10,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060086536] [2022-11-26 00:27:10,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060086536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:27:10,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:27:10,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:27:10,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436886698] [2022-11-26 00:27:10,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:27:10,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:27:10,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:27:10,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:27:10,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:27:10,137 INFO L87 Difference]: Start difference. First operand 2964 states and 4184 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-26 00:27:12,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:27:19,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:27:19,253 INFO L93 Difference]: Finished difference Result 8240 states and 11620 transitions. [2022-11-26 00:27:19,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:27:19,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 161 [2022-11-26 00:27:19,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:27:19,295 INFO L225 Difference]: With dead ends: 8240 [2022-11-26 00:27:19,295 INFO L226 Difference]: Without dead ends: 5303 [2022-11-26 00:27:19,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:27:19,312 INFO L413 NwaCegarLoop]: 2245 mSDtfsCounter, 1670 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1670 SdHoareTripleChecker+Valid, 4024 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:27:19,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1670 Valid, 4024 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 683 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-11-26 00:27:19,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5303 states. [2022-11-26 00:27:19,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5303 to 5274. [2022-11-26 00:27:19,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5274 states, 3077 states have (on average 1.2512187195320117) internal successors, (3850), 3151 states have internal predecessors, (3850), 1757 states have call successors, (1757), 440 states have call predecessors, (1757), 437 states have return successors, (1822), 1724 states have call predecessors, (1822), 1754 states have call successors, (1822) [2022-11-26 00:27:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 7429 transitions. [2022-11-26 00:27:19,628 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 7429 transitions. Word has length 161 [2022-11-26 00:27:19,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:27:19,630 INFO L495 AbstractCegarLoop]: Abstraction has 5274 states and 7429 transitions. [2022-11-26 00:27:19,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-26 00:27:19,631 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 7429 transitions. [2022-11-26 00:27:19,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-26 00:27:19,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:27:19,636 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:27:19,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:27:19,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:27:19,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:27:19,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1516155204, now seen corresponding path program 1 times [2022-11-26 00:27:19,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:27:19,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906837867] [2022-11-26 00:27:19,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:27:19,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:27:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:27:21,258 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-26 00:27:21,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:27:21,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906837867] [2022-11-26 00:27:21,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906837867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:27:21,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:27:21,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:27:21,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316911779] [2022-11-26 00:27:21,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:27:21,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:27:21,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:27:21,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:27:21,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:27:21,262 INFO L87 Difference]: Start difference. First operand 5274 states and 7429 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-26 00:27:23,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:27:28,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:27:29,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:27:31,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:27:31,803 INFO L93 Difference]: Finished difference Result 14636 states and 20487 transitions. [2022-11-26 00:27:31,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:27:31,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 172 [2022-11-26 00:27:31,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:27:31,879 INFO L225 Difference]: With dead ends: 14636 [2022-11-26 00:27:31,880 INFO L226 Difference]: Without dead ends: 9389 [2022-11-26 00:27:31,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:27:31,917 INFO L413 NwaCegarLoop]: 2673 mSDtfsCounter, 1689 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 4449 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:27:31,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 4449 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 807 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-11-26 00:27:31,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9389 states. [2022-11-26 00:27:32,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9389 to 9356. [2022-11-26 00:27:32,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9356 states, 5429 states have (on average 1.2319027445201696) internal successors, (6688), 5565 states have internal predecessors, (6688), 3095 states have call successors, (3095), 834 states have call predecessors, (3095), 829 states have return successors, (3162), 3032 states have call predecessors, (3162), 3092 states have call successors, (3162) [2022-11-26 00:27:32,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9356 states to 9356 states and 12945 transitions. [2022-11-26 00:27:32,594 INFO L78 Accepts]: Start accepts. Automaton has 9356 states and 12945 transitions. Word has length 172 [2022-11-26 00:27:32,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:27:32,595 INFO L495 AbstractCegarLoop]: Abstraction has 9356 states and 12945 transitions. [2022-11-26 00:27:32,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-26 00:27:32,597 INFO L276 IsEmpty]: Start isEmpty. Operand 9356 states and 12945 transitions. [2022-11-26 00:27:32,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-26 00:27:32,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:27:32,602 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:27:32,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:27:32,602 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:27:32,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:27:32,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1177009551, now seen corresponding path program 1 times [2022-11-26 00:27:32,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:27:32,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704927262] [2022-11-26 00:27:32,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:27:32,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:27:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:27:35,297 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-11-26 00:27:35,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:27:35,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704927262] [2022-11-26 00:27:35,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704927262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:27:35,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:27:35,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:27:35,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325642611] [2022-11-26 00:27:35,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:27:35,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:27:35,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:27:35,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:27:35,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:27:35,299 INFO L87 Difference]: Start difference. First operand 9356 states and 12945 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-26 00:27:37,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:27:44,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:27:44,721 INFO L93 Difference]: Finished difference Result 9512 states and 13083 transitions. [2022-11-26 00:27:44,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:27:44,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 185 [2022-11-26 00:27:44,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:27:44,803 INFO L225 Difference]: With dead ends: 9512 [2022-11-26 00:27:44,804 INFO L226 Difference]: Without dead ends: 9510 [2022-11-26 00:27:44,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:27:44,814 INFO L413 NwaCegarLoop]: 1847 mSDtfsCounter, 2078 mSDsluCounter, 3718 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 5565 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:27:44,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2089 Valid, 5565 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 980 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-11-26 00:27:44,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9510 states. [2022-11-26 00:27:45,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9510 to 9508. [2022-11-26 00:27:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9508 states, 5518 states have (on average 1.230699528814788) internal successors, (6791), 5662 states have internal predecessors, (6791), 3111 states have call successors, (3111), 881 states have call predecessors, (3111), 876 states have return successors, (3178), 3048 states have call predecessors, (3178), 3108 states have call successors, (3178) [2022-11-26 00:27:45,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9508 states to 9508 states and 13080 transitions. [2022-11-26 00:27:45,414 INFO L78 Accepts]: Start accepts. Automaton has 9508 states and 13080 transitions. Word has length 185 [2022-11-26 00:27:45,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:27:45,415 INFO L495 AbstractCegarLoop]: Abstraction has 9508 states and 13080 transitions. [2022-11-26 00:27:45,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-26 00:27:45,416 INFO L276 IsEmpty]: Start isEmpty. Operand 9508 states and 13080 transitions. [2022-11-26 00:27:45,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-26 00:27:45,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:27:45,422 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 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] [2022-11-26 00:27:45,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:27:45,423 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:27:45,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:27:45,423 INFO L85 PathProgramCache]: Analyzing trace with hash -657620303, now seen corresponding path program 1 times [2022-11-26 00:27:45,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:27:45,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216761626] [2022-11-26 00:27:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:27:45,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:27:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:27:47,884 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-11-26 00:27:47,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:27:47,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216761626] [2022-11-26 00:27:47,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216761626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:27:47,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:27:47,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:27:47,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050480563] [2022-11-26 00:27:47,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:27:47,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:27:47,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:27:47,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:27:47,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:27:47,886 INFO L87 Difference]: Start difference. First operand 9508 states and 13080 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, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 00:27:50,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:27:57,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:27:59,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:27:59,225 INFO L93 Difference]: Finished difference Result 9514 states and 13085 transitions. [2022-11-26 00:27:59,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:27:59,226 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, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 190 [2022-11-26 00:27:59,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:27:59,273 INFO L225 Difference]: With dead ends: 9514 [2022-11-26 00:27:59,273 INFO L226 Difference]: Without dead ends: 9512 [2022-11-26 00:27:59,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:27:59,281 INFO L413 NwaCegarLoop]: 1829 mSDtfsCounter, 2091 mSDsluCounter, 3639 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2101 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:27:59,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2101 Valid, 5468 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 969 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2022-11-26 00:27:59,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9512 states. [2022-11-26 00:28:00,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9512 to 9512. [2022-11-26 00:28:00,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9512 states, 5521 states have (on average 1.2305741713457707) internal successors, (6794), 5665 states have internal predecessors, (6794), 3111 states have call successors, (3111), 882 states have call predecessors, (3111), 877 states have return successors, (3178), 3048 states have call predecessors, (3178), 3108 states have call successors, (3178) [2022-11-26 00:28:00,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9512 states to 9512 states and 13083 transitions. [2022-11-26 00:28:00,068 INFO L78 Accepts]: Start accepts. Automaton has 9512 states and 13083 transitions. Word has length 190 [2022-11-26 00:28:00,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:00,069 INFO L495 AbstractCegarLoop]: Abstraction has 9512 states and 13083 transitions. [2022-11-26 00:28:00,069 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, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 00:28:00,070 INFO L276 IsEmpty]: Start isEmpty. Operand 9512 states and 13083 transitions. [2022-11-26 00:28:00,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-26 00:28:00,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:00,076 INFO L195 NwaCegarLoop]: trace histogram [15, 13, 13, 13, 13, 13, 13, 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] [2022-11-26 00:28:00,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:28:00,076 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:28:00,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:00,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1186817672, now seen corresponding path program 1 times [2022-11-26 00:28:00,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:00,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752662637] [2022-11-26 00:28:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:00,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2022-11-26 00:28:01,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:01,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752662637] [2022-11-26 00:28:01,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752662637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:01,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:01,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:28:01,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441998230] [2022-11-26 00:28:01,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:01,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:28:01,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:01,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:28:01,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:01,471 INFO L87 Difference]: Start difference. First operand 9512 states and 13083 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-26 00:28:03,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:28:08,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:28:11,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:28:13,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:13,325 INFO L93 Difference]: Finished difference Result 18326 states and 25206 transitions. [2022-11-26 00:28:13,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:28:13,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 192 [2022-11-26 00:28:13,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:13,363 INFO L225 Difference]: With dead ends: 18326 [2022-11-26 00:28:13,363 INFO L226 Difference]: Without dead ends: 8841 [2022-11-26 00:28:13,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:28:13,401 INFO L413 NwaCegarLoop]: 3412 mSDtfsCounter, 2024 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 5217 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:13,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 5217 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 929 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2022-11-26 00:28:13,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8841 states. [2022-11-26 00:28:13,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8841 to 8805. [2022-11-26 00:28:13,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8805 states, 5176 states have (on average 1.2293276661514683) internal successors, (6363), 5313 states have internal predecessors, (6363), 2819 states have call successors, (2819), 811 states have call predecessors, (2819), 807 states have return successors, (2884), 2757 states have call predecessors, (2884), 2816 states have call successors, (2884) [2022-11-26 00:28:13,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8805 states to 8805 states and 12066 transitions. [2022-11-26 00:28:13,950 INFO L78 Accepts]: Start accepts. Automaton has 8805 states and 12066 transitions. Word has length 192 [2022-11-26 00:28:13,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:13,951 INFO L495 AbstractCegarLoop]: Abstraction has 8805 states and 12066 transitions. [2022-11-26 00:28:13,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-26 00:28:13,951 INFO L276 IsEmpty]: Start isEmpty. Operand 8805 states and 12066 transitions. [2022-11-26 00:28:13,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-26 00:28:13,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:13,955 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:13,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:28:13,955 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:28:13,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:13,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1556154286, now seen corresponding path program 1 times [2022-11-26 00:28:13,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:13,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347363047] [2022-11-26 00:28:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:13,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2022-11-26 00:28:16,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:16,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347363047] [2022-11-26 00:28:16,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347363047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:16,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:16,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:16,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048463701] [2022-11-26 00:28:16,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:16,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:16,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:16,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:16,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:16,479 INFO L87 Difference]: Start difference. First operand 8805 states and 12066 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-26 00:28:18,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:28:24,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:28:27,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:27,142 INFO L93 Difference]: Finished difference Result 10450 states and 14063 transitions. [2022-11-26 00:28:27,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:28:27,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 204 [2022-11-26 00:28:27,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:27,191 INFO L225 Difference]: With dead ends: 10450 [2022-11-26 00:28:27,191 INFO L226 Difference]: Without dead ends: 10448 [2022-11-26 00:28:27,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:27,200 INFO L413 NwaCegarLoop]: 1931 mSDtfsCounter, 1936 mSDsluCounter, 4302 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1947 SdHoareTripleChecker+Valid, 6233 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:27,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1947 Valid, 6233 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1053 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2022-11-26 00:28:27,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10448 states. [2022-11-26 00:28:27,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10448 to 10439. [2022-11-26 00:28:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10439 states, 6036 states have (on average 1.2143803843605037) internal successors, (7330), 6195 states have internal predecessors, (7330), 3326 states have call successors, (3326), 1075 states have call predecessors, (3326), 1074 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-26 00:28:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10439 states to 10439 states and 14051 transitions. [2022-11-26 00:28:28,014 INFO L78 Accepts]: Start accepts. Automaton has 10439 states and 14051 transitions. Word has length 204 [2022-11-26 00:28:28,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:28,014 INFO L495 AbstractCegarLoop]: Abstraction has 10439 states and 14051 transitions. [2022-11-26 00:28:28,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-26 00:28:28,015 INFO L276 IsEmpty]: Start isEmpty. Operand 10439 states and 14051 transitions. [2022-11-26 00:28:28,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-26 00:28:28,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:28,019 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:28,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:28:28,020 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:28:28,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:28,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1482107599, now seen corresponding path program 1 times [2022-11-26 00:28:28,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:28,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841266180] [2022-11-26 00:28:28,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:28,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:30,338 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2022-11-26 00:28:30,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:30,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841266180] [2022-11-26 00:28:30,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841266180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:30,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:30,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:30,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563409016] [2022-11-26 00:28:30,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:30,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:30,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:30,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:30,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:30,340 INFO L87 Difference]: Start difference. First operand 10439 states and 14051 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-26 00:28:32,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:28:39,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:39,635 INFO L93 Difference]: Finished difference Result 10445 states and 14056 transitions. [2022-11-26 00:28:39,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:28:39,635 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, (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 200 [2022-11-26 00:28:39,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:39,676 INFO L225 Difference]: With dead ends: 10445 [2022-11-26 00:28:39,676 INFO L226 Difference]: Without dead ends: 10443 [2022-11-26 00:28:39,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:39,682 INFO L413 NwaCegarLoop]: 1829 mSDtfsCounter, 2091 mSDsluCounter, 3639 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2099 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:39,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2099 Valid, 5468 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 970 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-11-26 00:28:39,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10443 states. [2022-11-26 00:28:40,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10443 to 10443. [2022-11-26 00:28:40,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10443 states, 6039 states have (on average 1.214273886405034) internal successors, (7333), 6198 states have internal predecessors, (7333), 3326 states have call successors, (3326), 1076 states have call predecessors, (3326), 1075 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-26 00:28:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10443 states to 10443 states and 14054 transitions. [2022-11-26 00:28:40,345 INFO L78 Accepts]: Start accepts. Automaton has 10443 states and 14054 transitions. Word has length 200 [2022-11-26 00:28:40,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:40,345 INFO L495 AbstractCegarLoop]: Abstraction has 10443 states and 14054 transitions. [2022-11-26 00:28:40,346 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-26 00:28:40,346 INFO L276 IsEmpty]: Start isEmpty. Operand 10443 states and 14054 transitions. [2022-11-26 00:28:40,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-26 00:28:40,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:40,350 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:40,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:28:40,351 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:28:40,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:40,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1809111153, now seen corresponding path program 1 times [2022-11-26 00:28:40,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:40,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729252902] [2022-11-26 00:28:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:40,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2022-11-26 00:28:42,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:42,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729252902] [2022-11-26 00:28:42,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729252902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:42,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:42,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:42,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938086118] [2022-11-26 00:28:42,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:42,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:42,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:42,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:42,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:42,696 INFO L87 Difference]: Start difference. First operand 10443 states and 14054 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, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-26 00:28:44,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:28:51,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:51,229 INFO L93 Difference]: Finished difference Result 10449 states and 14059 transitions. [2022-11-26 00:28:51,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:28:51,229 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, (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 205 [2022-11-26 00:28:51,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:51,274 INFO L225 Difference]: With dead ends: 10449 [2022-11-26 00:28:51,274 INFO L226 Difference]: Without dead ends: 10447 [2022-11-26 00:28:51,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:28:51,283 INFO L413 NwaCegarLoop]: 1829 mSDtfsCounter, 2091 mSDsluCounter, 3639 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2098 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:51,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2098 Valid, 5468 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 970 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-11-26 00:28:51,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10447 states. [2022-11-26 00:28:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10447 to 10447. [2022-11-26 00:28:52,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10447 states, 6042 states have (on average 1.2141674942072163) internal successors, (7336), 6201 states have internal predecessors, (7336), 3326 states have call successors, (3326), 1077 states have call predecessors, (3326), 1076 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-26 00:28:52,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10447 states to 10447 states and 14057 transitions. [2022-11-26 00:28:52,340 INFO L78 Accepts]: Start accepts. Automaton has 10447 states and 14057 transitions. Word has length 205 [2022-11-26 00:28:52,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:52,341 INFO L495 AbstractCegarLoop]: Abstraction has 10447 states and 14057 transitions. [2022-11-26 00:28:52,341 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, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-26 00:28:52,342 INFO L276 IsEmpty]: Start isEmpty. Operand 10447 states and 14057 transitions. [2022-11-26 00:28:52,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-26 00:28:52,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:52,346 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:52,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:28:52,347 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:28:52,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:52,347 INFO L85 PathProgramCache]: Analyzing trace with hash -132994894, now seen corresponding path program 1 times [2022-11-26 00:28:52,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:52,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681547018] [2022-11-26 00:28:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:52,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:28:54,459 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2022-11-26 00:28:54,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:28:54,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681547018] [2022-11-26 00:28:54,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681547018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:28:54,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:28:54,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:28:54,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363791666] [2022-11-26 00:28:54,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:28:54,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:28:54,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:28:54,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:28:54,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:28:54,463 INFO L87 Difference]: Start difference. First operand 10447 states and 14057 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-26 00:28:56,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:02,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:05,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:05,105 INFO L93 Difference]: Finished difference Result 10453 states and 14062 transitions. [2022-11-26 00:29:05,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:29:05,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 219 [2022-11-26 00:29:05,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:05,149 INFO L225 Difference]: With dead ends: 10453 [2022-11-26 00:29:05,150 INFO L226 Difference]: Without dead ends: 10451 [2022-11-26 00:29:05,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:29:05,157 INFO L413 NwaCegarLoop]: 1829 mSDtfsCounter, 2087 mSDsluCounter, 3639 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:05,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2093 Valid, 5468 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 970 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2022-11-26 00:29:05,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10451 states. [2022-11-26 00:29:05,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10451 to 10451. [2022-11-26 00:29:05,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10451 states, 6045 states have (on average 1.2140612076095947) internal successors, (7339), 6204 states have internal predecessors, (7339), 3326 states have call successors, (3326), 1078 states have call predecessors, (3326), 1077 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-26 00:29:05,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10451 states to 10451 states and 14060 transitions. [2022-11-26 00:29:05,988 INFO L78 Accepts]: Start accepts. Automaton has 10451 states and 14060 transitions. Word has length 219 [2022-11-26 00:29:05,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:05,989 INFO L495 AbstractCegarLoop]: Abstraction has 10451 states and 14060 transitions. [2022-11-26 00:29:05,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-26 00:29:05,989 INFO L276 IsEmpty]: Start isEmpty. Operand 10451 states and 14060 transitions. [2022-11-26 00:29:05,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-26 00:29:05,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:05,994 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:05,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-26 00:29:05,995 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)] === [2022-11-26 00:29:05,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:05,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1732707471, now seen corresponding path program 1 times [2022-11-26 00:29:05,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:05,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419732120] [2022-11-26 00:29:05,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:05,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2022-11-26 00:29:08,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:08,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419732120] [2022-11-26 00:29:08,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419732120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:08,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:08,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:29:08,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015945491] [2022-11-26 00:29:08,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:08,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:29:08,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:08,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:29:08,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:29:08,022 INFO L87 Difference]: Start difference. First operand 10451 states and 14060 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, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-26 00:29:10,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:17,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:17,992 INFO L93 Difference]: Finished difference Result 10457 states and 14065 transitions. [2022-11-26 00:29:17,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:29:17,993 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, (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 215 [2022-11-26 00:29:17,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:18,041 INFO L225 Difference]: With dead ends: 10457 [2022-11-26 00:29:18,041 INFO L226 Difference]: Without dead ends: 10455 [2022-11-26 00:29:18,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:29:18,050 INFO L413 NwaCegarLoop]: 1829 mSDtfsCounter, 2091 mSDsluCounter, 3639 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:18,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2096 Valid, 5468 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 970 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2022-11-26 00:29:18,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10455 states. [2022-11-26 00:29:19,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10455 to 10455. [2022-11-26 00:29:19,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10455 states, 6048 states have (on average 1.2139550264550265) internal successors, (7342), 6207 states have internal predecessors, (7342), 3326 states have call successors, (3326), 1079 states have call predecessors, (3326), 1078 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-26 00:29:19,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10455 states to 10455 states and 14063 transitions. [2022-11-26 00:29:19,082 INFO L78 Accepts]: Start accepts. Automaton has 10455 states and 14063 transitions. Word has length 215 [2022-11-26 00:29:19,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:19,082 INFO L495 AbstractCegarLoop]: Abstraction has 10455 states and 14063 transitions. [2022-11-26 00:29:19,082 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, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-26 00:29:19,083 INFO L276 IsEmpty]: Start isEmpty. Operand 10455 states and 14063 transitions. [2022-11-26 00:29:19,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-26 00:29:19,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:19,088 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 8, 7, 7, 6, 6, 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] [2022-11-26 00:29:19,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 00:29:19,089 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:29:19,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:19,089 INFO L85 PathProgramCache]: Analyzing trace with hash 16682482, now seen corresponding path program 1 times [2022-11-26 00:29:19,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:19,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247567429] [2022-11-26 00:29:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:19,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2022-11-26 00:29:20,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:20,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247567429] [2022-11-26 00:29:20,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247567429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:20,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:20,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:29:20,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455980941] [2022-11-26 00:29:20,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:20,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:29:20,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:20,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:29:20,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:29:20,891 INFO L87 Difference]: Start difference. First operand 10455 states and 14063 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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) [2022-11-26 00:29:23,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:28,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:30,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:30,748 INFO L93 Difference]: Finished difference Result 10461 states and 14068 transitions. [2022-11-26 00:29:30,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:29:30,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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 229 [2022-11-26 00:29:30,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:30,794 INFO L225 Difference]: With dead ends: 10461 [2022-11-26 00:29:30,794 INFO L226 Difference]: Without dead ends: 10459 [2022-11-26 00:29:30,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:29:30,802 INFO L413 NwaCegarLoop]: 1829 mSDtfsCounter, 2087 mSDsluCounter, 3639 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:30,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2091 Valid, 5468 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 970 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2022-11-26 00:29:30,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10459 states. [2022-11-26 00:29:31,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10459 to 10459. [2022-11-26 00:29:31,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10459 states, 6051 states have (on average 1.2138489505866799) internal successors, (7345), 6210 states have internal predecessors, (7345), 3326 states have call successors, (3326), 1080 states have call predecessors, (3326), 1079 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-26 00:29:31,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10459 states to 10459 states and 14066 transitions. [2022-11-26 00:29:31,650 INFO L78 Accepts]: Start accepts. Automaton has 10459 states and 14066 transitions. Word has length 229 [2022-11-26 00:29:31,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:31,651 INFO L495 AbstractCegarLoop]: Abstraction has 10459 states and 14066 transitions. [2022-11-26 00:29:31,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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) [2022-11-26 00:29:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 10459 states and 14066 transitions. [2022-11-26 00:29:31,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-26 00:29:31,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:31,657 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 9, 8, 8, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:29:31,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-26 00:29:31,657 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:29:31,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:31,658 INFO L85 PathProgramCache]: Analyzing trace with hash -446410353, now seen corresponding path program 1 times [2022-11-26 00:29:31,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:31,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195300872] [2022-11-26 00:29:31,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:31,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 875 trivial. 0 not checked. [2022-11-26 00:29:33,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:33,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195300872] [2022-11-26 00:29:33,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195300872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:33,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:33,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:29:33,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733648147] [2022-11-26 00:29:33,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:33,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:29:33,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:33,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:29:33,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:29:33,572 INFO L87 Difference]: Start difference. First operand 10459 states and 14066 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-26 00:29:35,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:42,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:42,549 INFO L93 Difference]: Finished difference Result 10465 states and 14071 transitions. [2022-11-26 00:29:42,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:29:42,549 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 225 [2022-11-26 00:29:42,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:42,581 INFO L225 Difference]: With dead ends: 10465 [2022-11-26 00:29:42,581 INFO L226 Difference]: Without dead ends: 10463 [2022-11-26 00:29:42,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:29:42,588 INFO L413 NwaCegarLoop]: 1829 mSDtfsCounter, 2091 mSDsluCounter, 3639 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:42,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 5468 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 970 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-11-26 00:29:42,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10463 states. [2022-11-26 00:29:43,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10463 to 10463. [2022-11-26 00:29:43,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10463 states, 6054 states have (on average 1.2137429798480344) internal successors, (7348), 6213 states have internal predecessors, (7348), 3326 states have call successors, (3326), 1081 states have call predecessors, (3326), 1080 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-26 00:29:43,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10463 states to 10463 states and 14069 transitions. [2022-11-26 00:29:43,402 INFO L78 Accepts]: Start accepts. Automaton has 10463 states and 14069 transitions. Word has length 225 [2022-11-26 00:29:43,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:43,402 INFO L495 AbstractCegarLoop]: Abstraction has 10463 states and 14069 transitions. [2022-11-26 00:29:43,402 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-26 00:29:43,402 INFO L276 IsEmpty]: Start isEmpty. Operand 10463 states and 14069 transitions. [2022-11-26 00:29:43,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-26 00:29:43,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:43,408 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 10, 9, 9, 6, 6, 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] [2022-11-26 00:29:43,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-26 00:29:43,409 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:29:43,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:43,409 INFO L85 PathProgramCache]: Analyzing trace with hash 263099186, now seen corresponding path program 1 times [2022-11-26 00:29:43,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:43,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010796804] [2022-11-26 00:29:43,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:43,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:29:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:29:45,245 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2022-11-26 00:29:45,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:29:45,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010796804] [2022-11-26 00:29:45,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010796804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:29:45,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:29:45,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:29:45,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328049919] [2022-11-26 00:29:45,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:29:45,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:29:45,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:29:45,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:29:45,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:29:45,249 INFO L87 Difference]: Start difference. First operand 10463 states and 14069 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-26 00:29:47,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:53,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:54,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:56,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:29:58,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:58,923 INFO L93 Difference]: Finished difference Result 10469 states and 14074 transitions. [2022-11-26 00:29:58,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:29:58,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 239 [2022-11-26 00:29:58,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:58,948 INFO L225 Difference]: With dead ends: 10469 [2022-11-26 00:29:58,949 INFO L226 Difference]: Without dead ends: 10467 [2022-11-26 00:29:58,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:29:58,952 INFO L413 NwaCegarLoop]: 1829 mSDtfsCounter, 2087 mSDsluCounter, 3639 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:58,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2089 Valid, 5468 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 970 Invalid, 1 Unknown, 0 Unchecked, 12.8s Time] [2022-11-26 00:29:58,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10467 states. [2022-11-26 00:29:59,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10467 to 10467. [2022-11-26 00:29:59,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10467 states, 6057 states have (on average 1.2136371140828792) internal successors, (7351), 6216 states have internal predecessors, (7351), 3326 states have call successors, (3326), 1082 states have call predecessors, (3326), 1081 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-26 00:29:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10467 states to 10467 states and 14072 transitions. [2022-11-26 00:29:59,702 INFO L78 Accepts]: Start accepts. Automaton has 10467 states and 14072 transitions. Word has length 239 [2022-11-26 00:29:59,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:59,703 INFO L495 AbstractCegarLoop]: Abstraction has 10467 states and 14072 transitions. [2022-11-26 00:29:59,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-26 00:29:59,703 INFO L276 IsEmpty]: Start isEmpty. Operand 10467 states and 14072 transitions. [2022-11-26 00:29:59,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-26 00:29:59,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:59,708 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 11, 10, 10, 6, 6, 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] [2022-11-26 00:29:59,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-26 00:29:59,709 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:29:59,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:59,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1569746770, now seen corresponding path program 1 times [2022-11-26 00:29:59,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:29:59,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89306722] [2022-11-26 00:29:59,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:29:59,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:30:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:30:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2022-11-26 00:30:01,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:30:01,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89306722] [2022-11-26 00:30:01,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89306722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:30:01,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:30:01,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:30:01,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344419208] [2022-11-26 00:30:01,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:30:01,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:30:01,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:30:01,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:30:01,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:30:01,413 INFO L87 Difference]: Start difference. First operand 10467 states and 14072 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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) [2022-11-26 00:30:03,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:30:08,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:30:11,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:30:11,804 INFO L93 Difference]: Finished difference Result 10511 states and 14102 transitions. [2022-11-26 00:30:11,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:30:11,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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 244 [2022-11-26 00:30:11,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:30:11,828 INFO L225 Difference]: With dead ends: 10511 [2022-11-26 00:30:11,828 INFO L226 Difference]: Without dead ends: 10507 [2022-11-26 00:30:11,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:30:11,832 INFO L413 NwaCegarLoop]: 1829 mSDtfsCounter, 2040 mSDsluCounter, 3690 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 5519 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:30:11,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2041 Valid, 5519 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 974 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-11-26 00:30:11,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10507 states. [2022-11-26 00:30:12,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10507 to 10505. [2022-11-26 00:30:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10505 states, 6081 states have (on average 1.2129583950008223) internal successors, (7376), 6239 states have internal predecessors, (7376), 3326 states have call successors, (3326), 1097 states have call predecessors, (3326), 1095 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-26 00:30:12,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10505 states to 10505 states and 14097 transitions. [2022-11-26 00:30:12,668 INFO L78 Accepts]: Start accepts. Automaton has 10505 states and 14097 transitions. Word has length 244 [2022-11-26 00:30:12,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:30:12,669 INFO L495 AbstractCegarLoop]: Abstraction has 10505 states and 14097 transitions. [2022-11-26 00:30:12,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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) [2022-11-26 00:30:12,669 INFO L276 IsEmpty]: Start isEmpty. Operand 10505 states and 14097 transitions. [2022-11-26 00:30:12,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-26 00:30:12,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:30:12,676 INFO L195 NwaCegarLoop]: trace histogram [18, 13, 13, 13, 13, 13, 13, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:30:12,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-26 00:30:12,676 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:30:12,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:30:12,677 INFO L85 PathProgramCache]: Analyzing trace with hash -267957720, now seen corresponding path program 1 times [2022-11-26 00:30:12,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:30:12,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233242151] [2022-11-26 00:30:12,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:30:12,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:30:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:30:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-11-26 00:30:13,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:30:13,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233242151] [2022-11-26 00:30:13,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233242151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:30:13,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:30:13,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:30:13,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601715190] [2022-11-26 00:30:13,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:30:13,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:30:13,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:30:13,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:30:13,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:30:13,987 INFO L87 Difference]: Start difference. First operand 10505 states and 14097 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-26 00:30:16,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:30:22,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:30:24,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:30:27,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:30:27,096 INFO L93 Difference]: Finished difference Result 24494 states and 32993 transitions. [2022-11-26 00:30:27,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:30:27,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 235 [2022-11-26 00:30:27,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:30:27,135 INFO L225 Difference]: With dead ends: 24494 [2022-11-26 00:30:27,135 INFO L226 Difference]: Without dead ends: 14167 [2022-11-26 00:30:27,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:30:27,170 INFO L413 NwaCegarLoop]: 3174 mSDtfsCounter, 1870 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1871 SdHoareTripleChecker+Valid, 4975 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:30:27,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1871 Valid, 4975 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 875 Invalid, 3 Unknown, 0 Unchecked, 11.8s Time] [2022-11-26 00:30:27,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14167 states. [2022-11-26 00:30:28,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14167 to 14095. [2022-11-26 00:30:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14095 states, 8221 states have (on average 1.2189514657584235) internal successors, (10021), 8435 states have internal predecessors, (10021), 4441 states have call successors, (4441), 1433 states have call predecessors, (4441), 1430 states have return successors, (4545), 4348 states have call predecessors, (4545), 4438 states have call successors, (4545) [2022-11-26 00:30:28,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14095 states to 14095 states and 19007 transitions. [2022-11-26 00:30:28,415 INFO L78 Accepts]: Start accepts. Automaton has 14095 states and 19007 transitions. Word has length 235 [2022-11-26 00:30:28,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:30:28,415 INFO L495 AbstractCegarLoop]: Abstraction has 14095 states and 19007 transitions. [2022-11-26 00:30:28,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-26 00:30:28,416 INFO L276 IsEmpty]: Start isEmpty. Operand 14095 states and 19007 transitions. [2022-11-26 00:30:28,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-26 00:30:28,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:30:28,420 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 12, 11, 11, 6, 6, 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] [2022-11-26 00:30:28,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-26 00:30:28,420 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:30:28,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:30:28,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1434105970, now seen corresponding path program 1 times [2022-11-26 00:30:28,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:30:28,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001562968] [2022-11-26 00:30:28,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:30:28,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:30:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:30:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2022-11-26 00:30:30,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:30:30,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001562968] [2022-11-26 00:30:30,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001562968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:30:30,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:30:30,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:30:30,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371148932] [2022-11-26 00:30:30,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:30:30,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:30:30,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:30:30,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:30:30,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:30:30,428 INFO L87 Difference]: Start difference. First operand 14095 states and 19007 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-26 00:30:32,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:30:36,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:30:39,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:30:42,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:30:42,909 INFO L93 Difference]: Finished difference Result 14861 states and 19819 transitions. [2022-11-26 00:30:42,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:30:42,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 249 [2022-11-26 00:30:42,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:30:42,979 INFO L225 Difference]: With dead ends: 14861 [2022-11-26 00:30:42,979 INFO L226 Difference]: Without dead ends: 14738 [2022-11-26 00:30:42,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:30:42,986 INFO L413 NwaCegarLoop]: 1926 mSDtfsCounter, 2019 mSDsluCounter, 4003 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 5929 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:30:42,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 5929 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1059 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2022-11-26 00:30:43,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14738 states. [2022-11-26 00:30:44,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14738 to 14734. [2022-11-26 00:30:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14734 states, 8598 states have (on average 1.2135380321004885) internal successors, (10434), 8788 states have internal predecessors, (10434), 4541 states have call successors, (4541), 1594 states have call predecessors, (4541), 1593 states have return successors, (4648), 4473 states have call predecessors, (4648), 4541 states have call successors, (4648) [2022-11-26 00:30:44,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14734 states to 14734 states and 19623 transitions. [2022-11-26 00:30:44,639 INFO L78 Accepts]: Start accepts. Automaton has 14734 states and 19623 transitions. Word has length 249 [2022-11-26 00:30:44,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:30:44,640 INFO L495 AbstractCegarLoop]: Abstraction has 14734 states and 19623 transitions. [2022-11-26 00:30:44,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-26 00:30:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 14734 states and 19623 transitions. [2022-11-26 00:30:44,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-26 00:30:44,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:30:44,647 INFO L195 NwaCegarLoop]: trace histogram [20, 13, 13, 13, 13, 13, 13, 7, 7, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:30:44,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-26 00:30:44,647 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:30:44,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:30:44,648 INFO L85 PathProgramCache]: Analyzing trace with hash -199124327, now seen corresponding path program 1 times [2022-11-26 00:30:44,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:30:44,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702713421] [2022-11-26 00:30:44,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:30:44,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:30:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:30:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 929 trivial. 0 not checked. [2022-11-26 00:30:45,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:30:45,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702713421] [2022-11-26 00:30:45,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702713421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:30:45,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:30:45,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:30:45,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553591302] [2022-11-26 00:30:45,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:30:45,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:30:45,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:30:45,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:30:45,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:30:45,855 INFO L87 Difference]: Start difference. First operand 14734 states and 19623 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-26 00:30:48,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:30:57,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:30:57,961 INFO L93 Difference]: Finished difference Result 34220 states and 45678 transitions. [2022-11-26 00:30:57,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:30:57,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 277 [2022-11-26 00:30:57,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:30:58,017 INFO L225 Difference]: With dead ends: 34220 [2022-11-26 00:30:58,018 INFO L226 Difference]: Without dead ends: 19664 [2022-11-26 00:30:58,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:30:58,045 INFO L413 NwaCegarLoop]: 3177 mSDtfsCounter, 1659 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 4911 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:30:58,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 4911 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 952 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-11-26 00:30:58,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19664 states. [2022-11-26 00:30:59,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19664 to 19656. [2022-11-26 00:30:59,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19656 states, 11507 states have (on average 1.210915095159468) internal successors, (13934), 11764 states have internal predecessors, (13934), 6031 states have call successors, (6031), 2117 states have call predecessors, (6031), 2116 states have return successors, (6140), 5942 states have call predecessors, (6140), 6031 states have call successors, (6140) [2022-11-26 00:30:59,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19656 states to 19656 states and 26105 transitions. [2022-11-26 00:30:59,990 INFO L78 Accepts]: Start accepts. Automaton has 19656 states and 26105 transitions. Word has length 277 [2022-11-26 00:30:59,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:30:59,991 INFO L495 AbstractCegarLoop]: Abstraction has 19656 states and 26105 transitions. [2022-11-26 00:30:59,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-26 00:30:59,991 INFO L276 IsEmpty]: Start isEmpty. Operand 19656 states and 26105 transitions. [2022-11-26 00:30:59,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-11-26 00:30:59,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:30:59,997 INFO L195 NwaCegarLoop]: trace histogram [21, 13, 13, 13, 13, 13, 13, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:30:59,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-26 00:30:59,998 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)] === [2022-11-26 00:30:59,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:30:59,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1940759534, now seen corresponding path program 1 times [2022-11-26 00:30:59,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:30:59,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460422899] [2022-11-26 00:30:59,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:30:59,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:31:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:31:04,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1033 trivial. 0 not checked. [2022-11-26 00:31:04,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:31:04,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460422899] [2022-11-26 00:31:04,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460422899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:31:04,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:31:04,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:31:04,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445802091] [2022-11-26 00:31:04,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:31:04,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:31:04,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:31:04,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:31:04,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:31:04,115 INFO L87 Difference]: Start difference. First operand 19656 states and 26105 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-26 00:31:06,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:31:09,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:31:14,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:31:17,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:31:17,434 INFO L93 Difference]: Finished difference Result 19708 states and 26155 transitions. [2022-11-26 00:31:17,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:31:17,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 321 [2022-11-26 00:31:17,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:31:17,481 INFO L225 Difference]: With dead ends: 19708 [2022-11-26 00:31:17,481 INFO L226 Difference]: Without dead ends: 19706 [2022-11-26 00:31:17,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:31:17,488 INFO L413 NwaCegarLoop]: 1810 mSDtfsCounter, 1986 mSDsluCounter, 3647 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 5457 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:31:17,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 5457 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 964 Invalid, 2 Unknown, 0 Unchecked, 11.8s Time] [2022-11-26 00:31:17,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19706 states. [2022-11-26 00:31:18,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19706 to 19704. [2022-11-26 00:31:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19704 states, 11543 states have (on average 1.2095642380663605) internal successors, (13962), 11800 states have internal predecessors, (13962), 6031 states have call successors, (6031), 2129 states have call predecessors, (6031), 2128 states have return successors, (6140), 5942 states have call predecessors, (6140), 6031 states have call successors, (6140) [2022-11-26 00:31:18,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19704 states to 19704 states and 26133 transitions. [2022-11-26 00:31:18,972 INFO L78 Accepts]: Start accepts. Automaton has 19704 states and 26133 transitions. Word has length 321 [2022-11-26 00:31:18,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:31:18,972 INFO L495 AbstractCegarLoop]: Abstraction has 19704 states and 26133 transitions. [2022-11-26 00:31:18,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-26 00:31:18,972 INFO L276 IsEmpty]: Start isEmpty. Operand 19704 states and 26133 transitions. [2022-11-26 00:31:18,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-26 00:31:18,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:31:18,981 INFO L195 NwaCegarLoop]: trace histogram [22, 13, 13, 13, 13, 13, 13, 7, 7, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:31:18,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-26 00:31:18,982 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)] === [2022-11-26 00:31:18,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:31:18,982 INFO L85 PathProgramCache]: Analyzing trace with hash -267553245, now seen corresponding path program 1 times [2022-11-26 00:31:18,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:31:18,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164269839] [2022-11-26 00:31:18,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:31:18,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:31:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:31:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2022-11-26 00:31:20,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:31:20,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164269839] [2022-11-26 00:31:20,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164269839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:31:20,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:31:20,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:31:20,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129287651] [2022-11-26 00:31:20,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:31:20,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:31:20,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:31:20,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:31:20,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:31:20,683 INFO L87 Difference]: Start difference. First operand 19704 states and 26133 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-26 00:31:22,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:31:31,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:31:32,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:31:34,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:31:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:31:42,413 INFO L93 Difference]: Finished difference Result 43992 states and 58358 transitions. [2022-11-26 00:31:42,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:31:42,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 326 [2022-11-26 00:31:42,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:31:42,487 INFO L225 Difference]: With dead ends: 43992 [2022-11-26 00:31:42,487 INFO L226 Difference]: Without dead ends: 24466 [2022-11-26 00:31:42,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:31:42,538 INFO L413 NwaCegarLoop]: 3174 mSDtfsCounter, 1621 mSDsluCounter, 8080 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 11254 SdHoareTripleChecker+Invalid, 2051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:31:42,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 11254 Invalid, 2051 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2049 Invalid, 1 Unknown, 0 Unchecked, 19.0s Time] [2022-11-26 00:31:42,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24466 states. [2022-11-26 00:31:44,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24466 to 24446. [2022-11-26 00:31:44,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24446 states, 14275 states have (on average 1.2095271453590193) internal successors, (17266), 14599 states have internal predecessors, (17266), 7515 states have call successors, (7515), 2649 states have call predecessors, (7515), 2654 states have return successors, (7632), 7411 states have call predecessors, (7632), 7515 states have call successors, (7632) [2022-11-26 00:31:44,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24446 states to 24446 states and 32413 transitions. [2022-11-26 00:31:44,572 INFO L78 Accepts]: Start accepts. Automaton has 24446 states and 32413 transitions. Word has length 326 [2022-11-26 00:31:44,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:31:44,573 INFO L495 AbstractCegarLoop]: Abstraction has 24446 states and 32413 transitions. [2022-11-26 00:31:44,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-26 00:31:44,574 INFO L276 IsEmpty]: Start isEmpty. Operand 24446 states and 32413 transitions. [2022-11-26 00:31:44,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-26 00:31:44,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:31:44,583 INFO L195 NwaCegarLoop]: trace histogram [22, 13, 13, 13, 13, 13, 13, 7, 7, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:31:44,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-26 00:31:44,584 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:31:44,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:31:44,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1708169016, now seen corresponding path program 1 times [2022-11-26 00:31:44,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:31:44,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142383395] [2022-11-26 00:31:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:31:44,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:31:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:31:46,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2022-11-26 00:31:46,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:31:46,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142383395] [2022-11-26 00:31:46,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142383395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:31:46,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:31:46,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:31:46,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443640719] [2022-11-26 00:31:46,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:31:46,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:31:46,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:31:46,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:31:46,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:31:46,119 INFO L87 Difference]: Start difference. First operand 24446 states and 32413 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-26 00:31:48,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:31:53,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:32:00,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:32:07,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:32:07,902 INFO L93 Difference]: Finished difference Result 56291 states and 74706 transitions. [2022-11-26 00:32:07,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:32:07,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 327 [2022-11-26 00:32:07,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:32:07,992 INFO L225 Difference]: With dead ends: 56291 [2022-11-26 00:32:07,992 INFO L226 Difference]: Without dead ends: 32023 [2022-11-26 00:32:08,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:32:08,039 INFO L413 NwaCegarLoop]: 3055 mSDtfsCounter, 1745 mSDsluCounter, 7834 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 22 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 10889 SdHoareTripleChecker+Invalid, 2033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:32:08,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1748 Valid, 10889 Invalid, 2033 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 2009 Invalid, 2 Unknown, 0 Unchecked, 18.4s Time] [2022-11-26 00:32:08,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32023 states. [2022-11-26 00:32:10,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32023 to 32003. [2022-11-26 00:32:10,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32003 states, 18580 states have (on average 1.2040904198062432) internal successors, (22372), 19006 states have internal predecessors, (22372), 9919 states have call successors, (9919), 3492 states have call predecessors, (9919), 3502 states have return successors, (10064), 9782 states have call predecessors, (10064), 9919 states have call successors, (10064) [2022-11-26 00:32:10,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32003 states to 32003 states and 42355 transitions. [2022-11-26 00:32:10,664 INFO L78 Accepts]: Start accepts. Automaton has 32003 states and 42355 transitions. Word has length 327 [2022-11-26 00:32:10,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:32:10,665 INFO L495 AbstractCegarLoop]: Abstraction has 32003 states and 42355 transitions. [2022-11-26 00:32:10,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-26 00:32:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand 32003 states and 42355 transitions. [2022-11-26 00:32:10,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-11-26 00:32:10,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:32:10,673 INFO L195 NwaCegarLoop]: trace histogram [22, 13, 13, 13, 13, 13, 13, 7, 7, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:32:10,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-26 00:32:10,673 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:32:10,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:32:10,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1896050382, now seen corresponding path program 1 times [2022-11-26 00:32:10,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:32:10,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504776953] [2022-11-26 00:32:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:32:10,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:32:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:32:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2022-11-26 00:32:12,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:32:12,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504776953] [2022-11-26 00:32:12,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504776953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:32:12,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:32:12,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:32:12,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291289711] [2022-11-26 00:32:12,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:32:12,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:32:12,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:32:12,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:32:12,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:32:12,295 INFO L87 Difference]: Start difference. First operand 32003 states and 42355 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-26 00:32:14,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:32:20,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:32:26,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:32:30,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:32:37,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:32:37,266 INFO L93 Difference]: Finished difference Result 71443 states and 94643 transitions. [2022-11-26 00:32:37,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:32:37,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 328 [2022-11-26 00:32:37,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:32:37,396 INFO L225 Difference]: With dead ends: 71443 [2022-11-26 00:32:37,396 INFO L226 Difference]: Without dead ends: 39618 [2022-11-26 00:32:37,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:32:37,465 INFO L413 NwaCegarLoop]: 3270 mSDtfsCounter, 1743 mSDsluCounter, 8270 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 11540 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:32:37,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1743 Valid, 11540 Invalid, 2165 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 2139 Invalid, 1 Unknown, 0 Unchecked, 21.1s Time] [2022-11-26 00:32:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39618 states. [2022-11-26 00:32:40,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39618 to 39598. [2022-11-26 00:32:40,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39598 states, 22913 states have (on average 1.200453890804347) internal successors, (27506), 23441 states have internal predecessors, (27506), 12333 states have call successors, (12333), 4335 states have call predecessors, (12333), 4350 states have return successors, (12493), 12163 states have call predecessors, (12493), 12333 states have call successors, (12493) [2022-11-26 00:32:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39598 states to 39598 states and 52332 transitions. [2022-11-26 00:32:40,901 INFO L78 Accepts]: Start accepts. Automaton has 39598 states and 52332 transitions. Word has length 328 [2022-11-26 00:32:40,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:32:40,902 INFO L495 AbstractCegarLoop]: Abstraction has 39598 states and 52332 transitions. [2022-11-26 00:32:40,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-26 00:32:40,902 INFO L276 IsEmpty]: Start isEmpty. Operand 39598 states and 52332 transitions. [2022-11-26 00:32:40,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-26 00:32:40,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:32:40,910 INFO L195 NwaCegarLoop]: trace histogram [22, 13, 13, 13, 13, 13, 13, 7, 7, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:32:40,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-26 00:32:40,911 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:32:40,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:32:40,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1629419823, now seen corresponding path program 1 times [2022-11-26 00:32:40,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:32:40,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463454531] [2022-11-26 00:32:40,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:32:40,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:32:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:32:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2022-11-26 00:32:43,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:32:43,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463454531] [2022-11-26 00:32:43,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463454531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:32:43,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:32:43,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:32:43,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740856081] [2022-11-26 00:32:43,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:32:43,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:32:43,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:32:43,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:32:43,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:32:43,794 INFO L87 Difference]: Start difference. First operand 39598 states and 52332 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-26 00:32:45,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:32:54,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:33:01,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:33:01,763 INFO L93 Difference]: Finished difference Result 83870 states and 110860 transitions. [2022-11-26 00:33:01,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:33:01,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 329 [2022-11-26 00:33:01,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:33:01,911 INFO L225 Difference]: With dead ends: 83870 [2022-11-26 00:33:01,911 INFO L226 Difference]: Without dead ends: 44450 [2022-11-26 00:33:02,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:33:02,000 INFO L413 NwaCegarLoop]: 2502 mSDtfsCounter, 1894 mSDsluCounter, 6542 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 9044 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:33:02,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1898 Valid, 9044 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1567 Invalid, 1 Unknown, 0 Unchecked, 14.0s Time] [2022-11-26 00:33:02,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44450 states. [2022-11-26 00:33:06,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44450 to 44442. [2022-11-26 00:33:06,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44442 states, 25699 states have (on average 1.2017588233005174) internal successors, (30884), 26299 states have internal predecessors, (30884), 13847 states have call successors, (13847), 4879 states have call predecessors, (13847), 4894 states have return successors, (14009), 13653 states have call predecessors, (14009), 13847 states have call successors, (14009) [2022-11-26 00:33:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44442 states to 44442 states and 58740 transitions. [2022-11-26 00:33:06,252 INFO L78 Accepts]: Start accepts. Automaton has 44442 states and 58740 transitions. Word has length 329 [2022-11-26 00:33:06,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:33:06,253 INFO L495 AbstractCegarLoop]: Abstraction has 44442 states and 58740 transitions. [2022-11-26 00:33:06,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-26 00:33:06,253 INFO L276 IsEmpty]: Start isEmpty. Operand 44442 states and 58740 transitions. [2022-11-26 00:33:06,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-11-26 00:33:06,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:33:06,266 INFO L195 NwaCegarLoop]: trace histogram [21, 13, 13, 13, 13, 13, 13, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:33:06,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-26 00:33:06,266 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 00:33:06,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:33:06,267 INFO L85 PathProgramCache]: Analyzing trace with hash 866254015, now seen corresponding path program 1 times [2022-11-26 00:33:06,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:33:06,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46704991] [2022-11-26 00:33:06,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:06,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:33:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:09,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-11-26 00:33:09,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:33:09,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46704991] [2022-11-26 00:33:09,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46704991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:33:09,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:33:09,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:33:09,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476038485] [2022-11-26 00:33:09,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:33:09,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:33:09,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:33:09,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:33:09,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:33:09,242 INFO L87 Difference]: Start difference. First operand 44442 states and 58740 transitions. Second operand has 8 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (52), 4 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-26 00:33:11,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:33:24,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:33:26,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:33:35,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:33:35,424 INFO L93 Difference]: Finished difference Result 89146 states and 118157 transitions. [2022-11-26 00:33:35,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:33:35,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (52), 4 states have call predecessors, (52), 2 states have call successors, (52) Word has length 352 [2022-11-26 00:33:35,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:33:35,642 INFO L225 Difference]: With dead ends: 89146 [2022-11-26 00:33:35,643 INFO L226 Difference]: Without dead ends: 44882 [2022-11-26 00:33:35,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:33:35,779 INFO L413 NwaCegarLoop]: 1771 mSDtfsCounter, 10 mSDsluCounter, 10568 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12339 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:33:35,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12339 Invalid, 2436 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2427 Invalid, 1 Unknown, 0 Unchecked, 20.5s Time] [2022-11-26 00:33:35,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44882 states.