./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:18:28,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:18:28,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:18:28,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:18:28,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:18:28,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:18:28,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:18:28,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:18:28,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:18:28,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:18:28,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:18:28,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:18:28,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:18:28,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:18:28,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:18:28,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:18:28,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:18:28,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:18:28,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:18:28,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:18:28,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:18:28,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:18:28,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:18:28,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:18:28,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:18:28,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:18:28,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:18:28,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:18:28,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:18:28,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:18:28,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:18:28,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:18:28,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:18:28,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:18:28,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:18:28,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:18:28,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:18:28,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:18:28,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:18:28,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:18:28,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:18:28,187 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 10:18:28,208 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:18:28,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:18:28,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:18:28,209 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:18:28,209 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:18:28,209 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:18:28,210 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:18:28,210 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:18:28,210 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:18:28,210 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:18:28,210 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:18:28,210 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:18:28,211 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:18:28,211 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:18:28,211 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:18:28,211 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:18:28,211 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:18:28,212 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:18:28,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:18:28,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:18:28,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:18:28,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:18:28,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:18:28,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:18:28,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:18:28,214 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:18:28,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:18:28,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:18:28,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:18:28,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:18:28,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:18:28,215 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:18:28,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:18:28,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:18:28,215 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:18:28,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:18:28,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:18:28,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:18:28,216 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_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b [2022-12-14 10:18:28,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:18:28,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:18:28,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:18:28,427 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:18:28,428 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:18:28,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2022-12-14 10:18:31,001 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:18:31,366 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:18:31,366 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2022-12-14 10:18:31,388 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh/data/1352c5877/a1bbfef116f94e15b6e30bb1f8cb6836/FLAG5c8c80433 [2022-12-14 10:18:31,550 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh/data/1352c5877/a1bbfef116f94e15b6e30bb1f8cb6836 [2022-12-14 10:18:31,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:18:31,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:18:31,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:18:31,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:18:31,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:18:31,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:18:31" (1/1) ... [2022-12-14 10:18:31,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30ebe170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:31, skipping insertion in model container [2022-12-14 10:18:31,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:18:31" (1/1) ... [2022-12-14 10:18:31,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:18:31,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:18:32,135 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-14 10:18:32,206 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-12-14 10:18:32,243 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-14 10:18:32,245 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-14 10:18:32,253 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 10:18:32,255 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:18:32,343 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-12-14 10:18:32,465 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:18:32,467 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 10:18:32,472 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:18:32,482 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:18:32,495 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-12-14 10:18:32,495 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-12-14 10:18:32,504 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:18:32,504 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_config [2022-12-14 10:18:32,505 WARN L623 FunctionHandler]: Unknown extern function pcmcia_enable_device [2022-12-14 10:18:32,506 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:18:32,507 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:18:32,512 WARN L623 FunctionHandler]: Unknown extern function pcmcia_write_config_byte [2022-12-14 10:18:32,513 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:18:32,514 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:18:32,515 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:18:32,516 WARN L623 FunctionHandler]: Unknown extern function netdev_notice [2022-12-14 10:18:32,517 WARN L623 FunctionHandler]: Unknown extern function pcmcia_disable_device [2022-12-14 10:18:32,520 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-12-14 10:18:32,524 WARN L623 FunctionHandler]: Unknown extern function pcmcia_write_config_byte [2022-12-14 10:18:32,524 WARN L623 FunctionHandler]: Unknown extern function netif_device_attach [2022-12-14 10:18:32,533 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:18:32,533 WARN L623 FunctionHandler]: Unknown extern function pcmcia_dev_present [2022-12-14 10:18:32,535 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-14 10:18:32,535 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 10:18:32,537 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:18:32,539 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:18:32,539 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:18:32,542 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:18:32,542 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 10:18:32,543 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:18:32,544 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:18:32,545 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:18:32,545 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:18:32,546 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 10:18:32,550 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:18:32,553 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 10:18:32,589 WARN L623 FunctionHandler]: Unknown extern function dev_trans_start [2022-12-14 10:18:32,591 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:18:32,597 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:18:32,599 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:18:32,600 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:18:32,603 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 10:18:32,606 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:18:32,607 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:18:32,608 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-12-14 10:18:32,612 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-12-14 10:18:32,612 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-12-14 10:18:32,616 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:18:32,617 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:18:32,622 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:18:32,624 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:18:32,625 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:18:32,625 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 10:18:32,626 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-12-14 10:18:32,626 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-14 10:18:32,627 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:18:32,628 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:18:32,631 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:18:32,632 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:18:32,632 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:18:32,639 WARN L623 FunctionHandler]: Unknown extern function crc32_le [2022-12-14 10:18:32,639 WARN L623 FunctionHandler]: Unknown extern function bitrev32 [2022-12-14 10:18:32,646 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:18:32,649 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-12-14 10:18:32,836 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-14 10:18:32,837 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-14 10:18:32,838 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-14 10:18:32,840 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 10:18:32,843 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 10:18:32,843 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 10:18:32,847 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-12-14 10:18:32,858 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 10:18:32,858 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 10:18:32,860 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-12-14 10:18:32,861 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 10:18:32,861 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 10:18:32,862 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-12-14 10:18:32,863 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-14 10:18:32,864 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-12-14 10:18:32,864 WARN L623 FunctionHandler]: Unknown extern function pcmcia_register_driver [2022-12-14 10:18:32,865 WARN L623 FunctionHandler]: Unknown extern function pcmcia_unregister_driver [2022-12-14 10:18:32,865 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:18:32,866 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:18:32,866 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:18:32,867 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:18:32,867 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:18:32,867 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:18:32,868 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:18:32,868 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:18:32,914 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-14 10:18:32,914 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-14 10:18:32,920 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-14 10:18:33,309 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_d928faba-4c40-4018-9968-9846daa27495/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2022-12-14 10:18:33,313 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_d928faba-4c40-4018-9968-9846daa27495/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2022-12-14 10:18:33,313 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_d928faba-4c40-4018-9968-9846daa27495/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2022-12-14 10:18:33,314 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_d928faba-4c40-4018-9968-9846daa27495/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2022-12-14 10:18:33,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:18:33,357 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:18:33,424 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-14 10:18:33,427 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-12-14 10:18:33,429 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-14 10:18:33,429 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-14 10:18:33,430 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 10:18:33,431 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:18:33,433 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-12-14 10:18:33,436 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:18:33,437 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 10:18:33,439 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:18:33,441 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:18:33,444 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-12-14 10:18:33,445 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-12-14 10:18:33,447 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:18:33,448 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_config [2022-12-14 10:18:33,449 WARN L623 FunctionHandler]: Unknown extern function pcmcia_enable_device [2022-12-14 10:18:33,449 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:18:33,450 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:18:33,452 WARN L623 FunctionHandler]: Unknown extern function pcmcia_write_config_byte [2022-12-14 10:18:33,453 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 10:18:33,454 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:18:33,455 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:18:33,456 WARN L623 FunctionHandler]: Unknown extern function netdev_notice [2022-12-14 10:18:33,456 WARN L623 FunctionHandler]: Unknown extern function pcmcia_disable_device [2022-12-14 10:18:33,457 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-12-14 10:18:33,457 WARN L623 FunctionHandler]: Unknown extern function pcmcia_write_config_byte [2022-12-14 10:18:33,458 WARN L623 FunctionHandler]: Unknown extern function netif_device_attach [2022-12-14 10:18:33,461 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:18:33,462 WARN L623 FunctionHandler]: Unknown extern function pcmcia_dev_present [2022-12-14 10:18:33,462 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-14 10:18:33,463 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 10:18:33,464 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-12-14 10:18:33,466 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:18:33,466 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:18:33,468 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:18:33,469 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 10:18:33,470 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:18:33,471 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:18:33,472 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:18:33,473 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:18:33,473 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 10:18:33,478 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:18:33,481 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 10:18:33,505 WARN L623 FunctionHandler]: Unknown extern function dev_trans_start [2022-12-14 10:18:33,507 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:18:33,511 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:18:33,513 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:18:33,514 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:18:33,517 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 10:18:33,519 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:18:33,521 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:18:33,522 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-12-14 10:18:33,524 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-12-14 10:18:33,525 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-12-14 10:18:33,528 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:18:33,529 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:18:33,533 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:18:33,534 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:18:33,535 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:18:33,535 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 10:18:33,536 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-12-14 10:18:33,536 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-14 10:18:33,537 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:18:33,538 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-14 10:18:33,540 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-12-14 10:18:33,541 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:18:33,541 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 10:18:33,544 WARN L623 FunctionHandler]: Unknown extern function crc32_le [2022-12-14 10:18:33,544 WARN L623 FunctionHandler]: Unknown extern function bitrev32 [2022-12-14 10:18:33,550 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-14 10:18:33,552 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-12-14 10:18:33,559 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-14 10:18:33,559 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-14 10:18:33,560 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-14 10:18:33,561 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 10:18:33,564 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 10:18:33,564 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 10:18:33,567 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-12-14 10:18:33,587 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 10:18:33,588 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 10:18:33,591 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-12-14 10:18:33,592 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 10:18:33,592 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 10:18:33,592 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-12-14 10:18:33,593 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-14 10:18:33,594 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-12-14 10:18:33,594 WARN L623 FunctionHandler]: Unknown extern function pcmcia_register_driver [2022-12-14 10:18:33,595 WARN L623 FunctionHandler]: Unknown extern function pcmcia_unregister_driver [2022-12-14 10:18:33,595 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:18:33,595 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:18:33,595 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:18:33,596 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:18:33,596 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:18:33,596 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:18:33,597 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:18:33,597 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 10:18:33,600 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-14 10:18:33,600 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-14 10:18:33,601 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-14 10:18:33,621 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_d928faba-4c40-4018-9968-9846daa27495/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2022-12-14 10:18:33,622 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_d928faba-4c40-4018-9968-9846daa27495/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2022-12-14 10:18:33,622 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_d928faba-4c40-4018-9968-9846daa27495/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2022-12-14 10:18:33,623 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_d928faba-4c40-4018-9968-9846daa27495/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2022-12-14 10:18:33,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:18:33,737 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:18:33,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:33 WrapperNode [2022-12-14 10:18:33,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:18:33,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:18:33,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:18:33,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:18:33,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:33" (1/1) ... [2022-12-14 10:18:33,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:33" (1/1) ... [2022-12-14 10:18:33,875 INFO L138 Inliner]: procedures = 370, calls = 2251, calls flagged for inlining = 172, calls inlined = 152, statements flattened = 4153 [2022-12-14 10:18:33,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:18:33,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:18:33,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:18:33,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:18:33,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:33" (1/1) ... [2022-12-14 10:18:33,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:33" (1/1) ... [2022-12-14 10:18:33,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:33" (1/1) ... [2022-12-14 10:18:33,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:33" (1/1) ... [2022-12-14 10:18:33,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:33" (1/1) ... [2022-12-14 10:18:33,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:33" (1/1) ... [2022-12-14 10:18:33,986 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:33" (1/1) ... [2022-12-14 10:18:33,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:33" (1/1) ... [2022-12-14 10:18:34,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:18:34,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:18:34,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:18:34,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:18:34,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:33" (1/1) ... [2022-12-14 10:18:34,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:18:34,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:18:34,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:18:34,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:18:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_page_lock_of_ei_device [2022-12-14 10:18:34,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_page_lock_of_ei_device [2022-12-14 10:18:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-14 10:18:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-14 10:18:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_detach [2022-12-14 10:18:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_detach [2022-12-14 10:18:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-12-14 10:18:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-12-14 10:18:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-12-14 10:18:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-12-14 10:18:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-12-14 10:18:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-12-14 10:18:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure AX88190_init [2022-12-14 10:18:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure AX88190_init [2022-12-14 10:18:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-12-14 10:18:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-12-14 10:18:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-14 10:18:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-14 10:18:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2022-12-14 10:18:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2022-12-14 10:18:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-12-14 10:18:34,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-12-14 10:18:34,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_70 [2022-12-14 10:18:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_70 [2022-12-14 10:18:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-12-14 10:18:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-12-14 10:18:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure ei_receive [2022-12-14 10:18:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_receive [2022-12-14 10:18:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 10:18:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 10:18:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_axnet_cs_driver_exit_14_2 [2022-12-14 10:18:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_axnet_cs_driver_exit_14_2 [2022-12-14 10:18:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-12-14 10:18:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-12-14 10:18:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_release [2022-12-14 10:18:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_release [2022-12-14 10:18:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_write_config_byte [2022-12-14 10:18:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_write_config_byte [2022-12-14 10:18:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure insw [2022-12-14 10:18:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure insw [2022-12-14 10:18:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure PRIV [2022-12-14 10:18:34,072 INFO L138 BoogieDeclarations]: Found implementation of procedure PRIV [2022-12-14 10:18:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-12-14 10:18:34,072 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-12-14 10:18:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:18:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-12-14 10:18:34,072 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-12-14 10:18:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 10:18:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-12-14 10:18:34,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-12-14 10:18:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-12-14 10:18:34,072 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-12-14 10:18:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2022-12-14 10:18:34,072 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2022-12-14 10:18:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-12-14 10:18:34,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-12-14 10:18:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure NS8390_trigger_send [2022-12-14 10:18:34,072 INFO L138 BoogieDeclarations]: Found implementation of procedure NS8390_trigger_send [2022-12-14 10:18:34,072 INFO L130 BoogieDeclarations]: Found specification of procedure ei_tx_intr [2022-12-14 10:18:34,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_tx_intr [2022-12-14 10:18:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:18:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 10:18:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-12-14 10:18:34,073 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-12-14 10:18:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-12-14 10:18:34,073 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-12-14 10:18:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-12-14 10:18:34,073 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-12-14 10:18:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-12-14 10:18:34,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-12-14 10:18:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-14 10:18:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2022-12-14 10:18:34,073 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2022-12-14 10:18:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 10:18:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-12-14 10:18:34,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-12-14 10:18:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:18:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-12-14 10:18:34,073 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-12-14 10:18:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure ei_irq_wrapper [2022-12-14 10:18:34,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_irq_wrapper [2022-12-14 10:18:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-12-14 10:18:34,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-12-14 10:18:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-12-14 10:18:34,074 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-12-14 10:18:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-12-14 10:18:34,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-12-14 10:18:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:18:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-14 10:18:34,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-14 10:18:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_reset_8390 [2022-12-14 10:18:34,074 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_reset_8390 [2022-12-14 10:18:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_tx_timeout [2022-12-14 10:18:34,074 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_tx_timeout [2022-12-14 10:18:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-12-14 10:18:34,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-12-14 10:18:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:18:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-12-14 10:18:34,074 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-12-14 10:18:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-12-14 10:18:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-12-14 10:18:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_cs_driver_exit [2022-12-14 10:18:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_cs_driver_exit [2022-12-14 10:18:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:18:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-12-14 10:18:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-12-14 10:18:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-12-14 10:18:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-12-14 10:18:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 10:18:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-12-14 10:18:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-12-14 10:18:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-12-14 10:18:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-12-14 10:18:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-12-14 10:18:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-12-14 10:18:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2022-12-14 10:18:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2022-12-14 10:18:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-12-14 10:18:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-12-14 10:18:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure do_set_multicast_list [2022-12-14 10:18:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure do_set_multicast_list [2022-12-14 10:18:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:18:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-12-14 10:18:34,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-12-14 10:18:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-12-14 10:18:34,076 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-12-14 10:18:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:18:34,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:18:34,477 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:18:34,479 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:18:34,748 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-12-14 10:18:39,428 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-12-14 10:18:39,477 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:18:39,971 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:18:39,971 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 10:18:39,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:18:39 BoogieIcfgContainer [2022-12-14 10:18:39,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:18:39,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:18:39,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:18:39,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:18:39,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:18:31" (1/3) ... [2022-12-14 10:18:39,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c66389f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:18:39, skipping insertion in model container [2022-12-14 10:18:39,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:33" (2/3) ... [2022-12-14 10:18:39,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c66389f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:18:39, skipping insertion in model container [2022-12-14 10:18:39,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:18:39" (3/3) ... [2022-12-14 10:18:39,980 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2022-12-14 10:18:39,995 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:18:39,995 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-14 10:18:40,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:18:40,049 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;@3e83c2d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:18:40,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-14 10:18:40,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 953 states, 528 states have (on average 1.303030303030303) internal successors, (688), 552 states have internal predecessors, (688), 368 states have call successors, (368), 56 states have call predecessors, (368), 55 states have return successors, (362), 354 states have call predecessors, (362), 362 states have call successors, (362) [2022-12-14 10:18:40,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-14 10:18:40,065 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:40,066 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:40,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:18:40,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:40,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1346091668, now seen corresponding path program 1 times [2022-12-14 10:18:40,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:40,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947830602] [2022-12-14 10:18:40,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:40,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:40,605 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-12-14 10:18:40,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:40,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947830602] [2022-12-14 10:18:40,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947830602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:40,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:40,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:18:40,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937618065] [2022-12-14 10:18:40,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:40,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:18:40,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:40,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:18:40,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:18:40,641 INFO L87 Difference]: Start difference. First operand has 953 states, 528 states have (on average 1.303030303030303) internal successors, (688), 552 states have internal predecessors, (688), 368 states have call successors, (368), 56 states have call predecessors, (368), 55 states have return successors, (362), 354 states have call predecessors, (362), 362 states have call successors, (362) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 10:18:42,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:42,473 INFO L93 Difference]: Finished difference Result 2749 states and 4166 transitions. [2022-12-14 10:18:42,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:18:42,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2022-12-14 10:18:42,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:42,493 INFO L225 Difference]: With dead ends: 2749 [2022-12-14 10:18:42,493 INFO L226 Difference]: Without dead ends: 1801 [2022-12-14 10:18:42,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:18:42,503 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 1301 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:42,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 2732 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 10:18:42,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2022-12-14 10:18:42,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1797. [2022-12-14 10:18:42,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1005 states have (on average 1.2935323383084578) internal successors, (1300), 1050 states have internal predecessors, (1300), 683 states have call successors, (683), 107 states have call predecessors, (683), 106 states have return successors, (679), 663 states have call predecessors, (679), 679 states have call successors, (679) [2022-12-14 10:18:42,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2662 transitions. [2022-12-14 10:18:42,696 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2662 transitions. Word has length 91 [2022-12-14 10:18:42,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:42,697 INFO L495 AbstractCegarLoop]: Abstraction has 1797 states and 2662 transitions. [2022-12-14 10:18:42,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 10:18:42,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2662 transitions. [2022-12-14 10:18:42,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-14 10:18:42,702 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:42,702 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:42,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:18:42,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:18:42,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:42,704 INFO L85 PathProgramCache]: Analyzing trace with hash -636257261, now seen corresponding path program 1 times [2022-12-14 10:18:42,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:42,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085806848] [2022-12-14 10:18:42,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:42,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-12-14 10:18:42,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:42,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085806848] [2022-12-14 10:18:42,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085806848] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:42,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:42,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:18:42,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433463768] [2022-12-14 10:18:42,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:42,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:18:42,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:42,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:18:42,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:18:42,997 INFO L87 Difference]: Start difference. First operand 1797 states and 2662 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 10:18:45,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:45,680 INFO L93 Difference]: Finished difference Result 5055 states and 7458 transitions. [2022-12-14 10:18:45,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:18:45,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-12-14 10:18:45,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:45,698 INFO L225 Difference]: With dead ends: 5055 [2022-12-14 10:18:45,698 INFO L226 Difference]: Without dead ends: 3273 [2022-12-14 10:18:45,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:18:45,706 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 1115 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:45,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 2720 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 10:18:45,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2022-12-14 10:18:45,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 3242. [2022-12-14 10:18:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3242 states, 1810 states have (on average 1.2834254143646409) internal successors, (2323), 1892 states have internal predecessors, (2323), 1222 states have call successors, (1222), 206 states have call predecessors, (1222), 207 states have return successors, (1224), 1189 states have call predecessors, (1224), 1218 states have call successors, (1224) [2022-12-14 10:18:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3242 states to 3242 states and 4769 transitions. [2022-12-14 10:18:45,852 INFO L78 Accepts]: Start accepts. Automaton has 3242 states and 4769 transitions. Word has length 99 [2022-12-14 10:18:45,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:45,852 INFO L495 AbstractCegarLoop]: Abstraction has 3242 states and 4769 transitions. [2022-12-14 10:18:45,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 10:18:45,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3242 states and 4769 transitions. [2022-12-14 10:18:45,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 10:18:45,853 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:45,854 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:45,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:18:45,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:18:45,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:45,855 INFO L85 PathProgramCache]: Analyzing trace with hash 16140728, now seen corresponding path program 1 times [2022-12-14 10:18:45,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:45,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025388952] [2022-12-14 10:18:45,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:45,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-12-14 10:18:46,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:46,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025388952] [2022-12-14 10:18:46,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025388952] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:46,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:46,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:18:46,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092577490] [2022-12-14 10:18:46,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:46,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:18:46,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:46,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:18:46,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:18:46,116 INFO L87 Difference]: Start difference. First operand 3242 states and 4769 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 10:18:48,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:48,116 INFO L93 Difference]: Finished difference Result 8940 states and 13097 transitions. [2022-12-14 10:18:48,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:18:48,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 103 [2022-12-14 10:18:48,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:48,137 INFO L225 Difference]: With dead ends: 8940 [2022-12-14 10:18:48,137 INFO L226 Difference]: Without dead ends: 5713 [2022-12-14 10:18:48,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:18:48,147 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 1114 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:48,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 2684 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 10:18:48,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5713 states. [2022-12-14 10:18:48,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5713 to 5680. [2022-12-14 10:18:48,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5680 states, 3184 states have (on average 1.2792085427135678) internal successors, (4073), 3322 states have internal predecessors, (4073), 2108 states have call successors, (2108), 388 states have call predecessors, (2108), 385 states have return successors, (2116), 2035 states have call predecessors, (2116), 2104 states have call successors, (2116) [2022-12-14 10:18:48,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5680 states to 5680 states and 8297 transitions. [2022-12-14 10:18:48,376 INFO L78 Accepts]: Start accepts. Automaton has 5680 states and 8297 transitions. Word has length 103 [2022-12-14 10:18:48,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:48,376 INFO L495 AbstractCegarLoop]: Abstraction has 5680 states and 8297 transitions. [2022-12-14 10:18:48,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 10:18:48,376 INFO L276 IsEmpty]: Start isEmpty. Operand 5680 states and 8297 transitions. [2022-12-14 10:18:48,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-14 10:18:48,378 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:48,378 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:48,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:18:48,378 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:18:48,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:48,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1941994452, now seen corresponding path program 1 times [2022-12-14 10:18:48,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:48,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206300420] [2022-12-14 10:18:48,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:48,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:48,641 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-12-14 10:18:48,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:48,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206300420] [2022-12-14 10:18:48,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206300420] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:48,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:48,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:18:48,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915126868] [2022-12-14 10:18:48,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:48,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:18:48,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:48,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:18:48,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:18:48,644 INFO L87 Difference]: Start difference. First operand 5680 states and 8297 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 10:18:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:50,165 INFO L93 Difference]: Finished difference Result 10086 states and 14720 transitions. [2022-12-14 10:18:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:18:50,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 118 [2022-12-14 10:18:50,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:50,183 INFO L225 Difference]: With dead ends: 10086 [2022-12-14 10:18:50,183 INFO L226 Difference]: Without dead ends: 4421 [2022-12-14 10:18:50,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:18:50,217 INFO L413 NwaCegarLoop]: 1651 mSDtfsCounter, 1260 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 2279 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:50,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 2279 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 10:18:50,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2022-12-14 10:18:50,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 4382. [2022-12-14 10:18:50,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 2512 states have (on average 1.273487261146497) internal successors, (3199), 2656 states have internal predecessors, (3199), 1551 states have call successors, (1551), 355 states have call predecessors, (1551), 316 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-12-14 10:18:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 6333 transitions. [2022-12-14 10:18:50,380 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 6333 transitions. Word has length 118 [2022-12-14 10:18:50,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:50,380 INFO L495 AbstractCegarLoop]: Abstraction has 4382 states and 6333 transitions. [2022-12-14 10:18:50,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 10:18:50,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 6333 transitions. [2022-12-14 10:18:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-14 10:18:50,382 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:50,382 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:50,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 10:18:50,382 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:18:50,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:50,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1850506862, now seen corresponding path program 1 times [2022-12-14 10:18:50,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:50,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94819964] [2022-12-14 10:18:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:50,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-12-14 10:18:50,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:50,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94819964] [2022-12-14 10:18:50,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94819964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:50,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:50,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:18:50,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962376383] [2022-12-14 10:18:50,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:50,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:18:50,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:50,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:18:50,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:18:50,765 INFO L87 Difference]: Start difference. First operand 4382 states and 6333 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 10:18:53,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:53,602 INFO L93 Difference]: Finished difference Result 4388 states and 6338 transitions. [2022-12-14 10:18:53,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:18:53,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2022-12-14 10:18:53,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:53,618 INFO L225 Difference]: With dead ends: 4388 [2022-12-14 10:18:53,618 INFO L226 Difference]: Without dead ends: 4386 [2022-12-14 10:18:53,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:18:53,621 INFO L413 NwaCegarLoop]: 1198 mSDtfsCounter, 1344 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:53,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 3581 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-14 10:18:53,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2022-12-14 10:18:53,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 4386. [2022-12-14 10:18:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 2515 states have (on average 1.2731610337972168) internal successors, (3202), 2659 states have internal predecessors, (3202), 1551 states have call successors, (1551), 356 states have call predecessors, (1551), 317 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-12-14 10:18:53,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 6336 transitions. [2022-12-14 10:18:53,863 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 6336 transitions. Word has length 133 [2022-12-14 10:18:53,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:53,863 INFO L495 AbstractCegarLoop]: Abstraction has 4386 states and 6336 transitions. [2022-12-14 10:18:53,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 10:18:53,864 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 6336 transitions. [2022-12-14 10:18:53,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-14 10:18:53,865 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:53,865 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:53,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:18:53,865 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:18:53,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:53,865 INFO L85 PathProgramCache]: Analyzing trace with hash -499726899, now seen corresponding path program 1 times [2022-12-14 10:18:53,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:53,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491954104] [2022-12-14 10:18:53,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:53,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-12-14 10:18:54,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:54,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491954104] [2022-12-14 10:18:54,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491954104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:54,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:54,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:18:54,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934490088] [2022-12-14 10:18:54,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:54,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:18:54,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:54,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:18:54,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:18:54,220 INFO L87 Difference]: Start difference. First operand 4386 states and 6336 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 10:18:56,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:56,378 INFO L93 Difference]: Finished difference Result 4392 states and 6341 transitions. [2022-12-14 10:18:56,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:18:56,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2022-12-14 10:18:56,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:56,391 INFO L225 Difference]: With dead ends: 4392 [2022-12-14 10:18:56,391 INFO L226 Difference]: Without dead ends: 4390 [2022-12-14 10:18:56,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:18:56,393 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1339 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:56,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 10:18:56,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4390 states. [2022-12-14 10:18:56,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4390 to 4390. [2022-12-14 10:18:56,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4390 states, 2518 states have (on average 1.272835583796664) internal successors, (3205), 2662 states have internal predecessors, (3205), 1551 states have call successors, (1551), 357 states have call predecessors, (1551), 318 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-12-14 10:18:56,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 6339 transitions. [2022-12-14 10:18:56,574 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 6339 transitions. Word has length 138 [2022-12-14 10:18:56,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:56,575 INFO L495 AbstractCegarLoop]: Abstraction has 4390 states and 6339 transitions. [2022-12-14 10:18:56,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 10:18:56,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 6339 transitions. [2022-12-14 10:18:56,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-12-14 10:18:56,576 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:56,576 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 5, 5, 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] [2022-12-14 10:18:56,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 10:18:56,577 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:18:56,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:56,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2025132244, now seen corresponding path program 1 times [2022-12-14 10:18:56,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:56,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354541790] [2022-12-14 10:18:56,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:56,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-12-14 10:18:56,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:56,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354541790] [2022-12-14 10:18:56,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354541790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:56,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:56,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:18:56,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315381165] [2022-12-14 10:18:56,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:56,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:18:56,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:56,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:18:56,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:18:56,957 INFO L87 Difference]: Start difference. First operand 4390 states and 6339 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 10:18:59,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:59,388 INFO L93 Difference]: Finished difference Result 4396 states and 6344 transitions. [2022-12-14 10:18:59,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:18:59,388 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 150 [2022-12-14 10:18:59,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:59,405 INFO L225 Difference]: With dead ends: 4396 [2022-12-14 10:18:59,405 INFO L226 Difference]: Without dead ends: 4394 [2022-12-14 10:18:59,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:18:59,407 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1338 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:59,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 10:18:59,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2022-12-14 10:18:59,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 4394. [2022-12-14 10:18:59,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4394 states, 2521 states have (on average 1.2725109083696946) internal successors, (3208), 2665 states have internal predecessors, (3208), 1551 states have call successors, (1551), 358 states have call predecessors, (1551), 319 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-12-14 10:18:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4394 states to 4394 states and 6342 transitions. [2022-12-14 10:18:59,647 INFO L78 Accepts]: Start accepts. Automaton has 4394 states and 6342 transitions. Word has length 150 [2022-12-14 10:18:59,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:59,647 INFO L495 AbstractCegarLoop]: Abstraction has 4394 states and 6342 transitions. [2022-12-14 10:18:59,648 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 10:18:59,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4394 states and 6342 transitions. [2022-12-14 10:18:59,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-14 10:18:59,650 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:59,650 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:59,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 10:18:59,650 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:18:59,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:59,650 INFO L85 PathProgramCache]: Analyzing trace with hash 456215375, now seen corresponding path program 1 times [2022-12-14 10:18:59,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:59,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603377757] [2022-12-14 10:18:59,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:59,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-12-14 10:18:59,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:59,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603377757] [2022-12-14 10:18:59,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603377757] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:59,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:59,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:18:59,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704704261] [2022-12-14 10:18:59,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:59,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:18:59,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:59,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:18:59,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:18:59,994 INFO L87 Difference]: Start difference. First operand 4394 states and 6342 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 10:19:02,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:02,591 INFO L93 Difference]: Finished difference Result 4400 states and 6347 transitions. [2022-12-14 10:19:02,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:19:02,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 155 [2022-12-14 10:19:02,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:02,610 INFO L225 Difference]: With dead ends: 4400 [2022-12-14 10:19:02,610 INFO L226 Difference]: Without dead ends: 4398 [2022-12-14 10:19:02,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:19:02,612 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1338 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:02,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 10:19:02,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2022-12-14 10:19:02,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 4398. [2022-12-14 10:19:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4398 states, 2524 states have (on average 1.2721870047543582) internal successors, (3211), 2668 states have internal predecessors, (3211), 1551 states have call successors, (1551), 359 states have call predecessors, (1551), 320 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-12-14 10:19:02,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4398 states to 4398 states and 6345 transitions. [2022-12-14 10:19:02,824 INFO L78 Accepts]: Start accepts. Automaton has 4398 states and 6345 transitions. Word has length 155 [2022-12-14 10:19:02,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:02,824 INFO L495 AbstractCegarLoop]: Abstraction has 4398 states and 6345 transitions. [2022-12-14 10:19:02,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 10:19:02,825 INFO L276 IsEmpty]: Start isEmpty. Operand 4398 states and 6345 transitions. [2022-12-14 10:19:02,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-12-14 10:19:02,827 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:02,827 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:02,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 10:19:02,828 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:19:02,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:02,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1625654098, now seen corresponding path program 1 times [2022-12-14 10:19:02,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:02,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927390963] [2022-12-14 10:19:02,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:02,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-12-14 10:19:03,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:03,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927390963] [2022-12-14 10:19:03,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927390963] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:19:03,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:19:03,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:19:03,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149424436] [2022-12-14 10:19:03,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:19:03,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:19:03,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:03,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:19:03,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:19:03,116 INFO L87 Difference]: Start difference. First operand 4398 states and 6345 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 10:19:05,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:05,448 INFO L93 Difference]: Finished difference Result 4404 states and 6350 transitions. [2022-12-14 10:19:05,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:19:05,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 153 [2022-12-14 10:19:05,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:05,466 INFO L225 Difference]: With dead ends: 4404 [2022-12-14 10:19:05,466 INFO L226 Difference]: Without dead ends: 4402 [2022-12-14 10:19:05,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:19:05,469 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1339 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:05,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-14 10:19:05,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4402 states. [2022-12-14 10:19:05,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4402 to 4402. [2022-12-14 10:19:05,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 2527 states have (on average 1.2718638702018203) internal successors, (3214), 2671 states have internal predecessors, (3214), 1551 states have call successors, (1551), 360 states have call predecessors, (1551), 321 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-12-14 10:19:05,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 6348 transitions. [2022-12-14 10:19:05,724 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 6348 transitions. Word has length 153 [2022-12-14 10:19:05,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:05,724 INFO L495 AbstractCegarLoop]: Abstraction has 4402 states and 6348 transitions. [2022-12-14 10:19:05,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 10:19:05,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 6348 transitions. [2022-12-14 10:19:05,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-14 10:19:05,726 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:05,726 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:05,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 10:19:05,727 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:19:05,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:05,727 INFO L85 PathProgramCache]: Analyzing trace with hash 102895245, now seen corresponding path program 1 times [2022-12-14 10:19:05,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:05,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945009144] [2022-12-14 10:19:05,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:05,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2022-12-14 10:19:06,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:06,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945009144] [2022-12-14 10:19:06,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945009144] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:19:06,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:19:06,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:19:06,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970844667] [2022-12-14 10:19:06,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:19:06,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:19:06,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:06,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:19:06,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:19:06,085 INFO L87 Difference]: Start difference. First operand 4402 states and 6348 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 10:19:08,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:08,546 INFO L93 Difference]: Finished difference Result 4408 states and 6353 transitions. [2022-12-14 10:19:08,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:19:08,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 158 [2022-12-14 10:19:08,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:08,557 INFO L225 Difference]: With dead ends: 4408 [2022-12-14 10:19:08,557 INFO L226 Difference]: Without dead ends: 4406 [2022-12-14 10:19:08,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:19:08,558 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1339 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:08,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 10:19:08,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4406 states. [2022-12-14 10:19:08,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4406 to 4406. [2022-12-14 10:19:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 2530 states have (on average 1.2715415019762846) internal successors, (3217), 2674 states have internal predecessors, (3217), 1551 states have call successors, (1551), 361 states have call predecessors, (1551), 322 states have return successors, (1583), 1405 states have call predecessors, (1583), 1547 states have call successors, (1583) [2022-12-14 10:19:08,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 6351 transitions. [2022-12-14 10:19:08,784 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 6351 transitions. Word has length 158 [2022-12-14 10:19:08,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:08,785 INFO L495 AbstractCegarLoop]: Abstraction has 4406 states and 6351 transitions. [2022-12-14 10:19:08,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 10:19:08,785 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 6351 transitions. [2022-12-14 10:19:08,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-12-14 10:19:08,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:08,787 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:08,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 10:19:08,787 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:19:08,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:08,787 INFO L85 PathProgramCache]: Analyzing trace with hash 799311510, now seen corresponding path program 1 times [2022-12-14 10:19:08,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:08,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315519307] [2022-12-14 10:19:08,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:08,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-12-14 10:19:08,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:08,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315519307] [2022-12-14 10:19:08,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315519307] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:19:08,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:19:08,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:19:08,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396283978] [2022-12-14 10:19:08,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:19:08,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:19:08,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:08,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:19:08,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:19:08,994 INFO L87 Difference]: Start difference. First operand 4406 states and 6351 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-12-14 10:19:10,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 10:19:11,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:11,754 INFO L93 Difference]: Finished difference Result 9705 states and 14001 transitions. [2022-12-14 10:19:11,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:19:11,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 165 [2022-12-14 10:19:11,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:11,769 INFO L225 Difference]: With dead ends: 9705 [2022-12-14 10:19:11,769 INFO L226 Difference]: Without dead ends: 5368 [2022-12-14 10:19:11,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:19:11,780 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 466 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:11,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 2768 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 10:19:11,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5368 states. [2022-12-14 10:19:12,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5368 to 5313. [2022-12-14 10:19:12,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5313 states, 3075 states have (on average 1.272520325203252) internal successors, (3913), 3265 states have internal predecessors, (3913), 1835 states have call successors, (1835), 472 states have call predecessors, (1835), 400 states have return successors, (1879), 1610 states have call predecessors, (1879), 1831 states have call successors, (1879) [2022-12-14 10:19:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5313 states to 5313 states and 7627 transitions. [2022-12-14 10:19:12,113 INFO L78 Accepts]: Start accepts. Automaton has 5313 states and 7627 transitions. Word has length 165 [2022-12-14 10:19:12,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:12,113 INFO L495 AbstractCegarLoop]: Abstraction has 5313 states and 7627 transitions. [2022-12-14 10:19:12,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-12-14 10:19:12,114 INFO L276 IsEmpty]: Start isEmpty. Operand 5313 states and 7627 transitions. [2022-12-14 10:19:12,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-12-14 10:19:12,116 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:12,116 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:12,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 10:19:12,116 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:19:12,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:12,117 INFO L85 PathProgramCache]: Analyzing trace with hash -690821170, now seen corresponding path program 1 times [2022-12-14 10:19:12,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:12,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297566662] [2022-12-14 10:19:12,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:12,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-12-14 10:19:12,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:12,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297566662] [2022-12-14 10:19:12,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297566662] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:19:12,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:19:12,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:19:12,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424944949] [2022-12-14 10:19:12,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:19:12,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:19:12,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:12,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:19:12,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:19:12,475 INFO L87 Difference]: Start difference. First operand 5313 states and 7627 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (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) [2022-12-14 10:19:15,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:15,406 INFO L93 Difference]: Finished difference Result 5319 states and 7632 transitions. [2022-12-14 10:19:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:19:15,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (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 163 [2022-12-14 10:19:15,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:15,423 INFO L225 Difference]: With dead ends: 5319 [2022-12-14 10:19:15,423 INFO L226 Difference]: Without dead ends: 5317 [2022-12-14 10:19:15,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:19:15,425 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1339 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:15,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-14 10:19:15,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5317 states. [2022-12-14 10:19:15,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5317 to 5317. [2022-12-14 10:19:15,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5317 states, 3078 states have (on average 1.2722547108512021) internal successors, (3916), 3268 states have internal predecessors, (3916), 1835 states have call successors, (1835), 473 states have call predecessors, (1835), 401 states have return successors, (1879), 1610 states have call predecessors, (1879), 1831 states have call successors, (1879) [2022-12-14 10:19:15,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5317 states to 5317 states and 7630 transitions. [2022-12-14 10:19:15,811 INFO L78 Accepts]: Start accepts. Automaton has 5317 states and 7630 transitions. Word has length 163 [2022-12-14 10:19:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:15,812 INFO L495 AbstractCegarLoop]: Abstraction has 5317 states and 7630 transitions. [2022-12-14 10:19:15,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (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) [2022-12-14 10:19:15,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5317 states and 7630 transitions. [2022-12-14 10:19:15,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-12-14 10:19:15,815 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:15,815 INFO L195 NwaCegarLoop]: trace histogram [11, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:15,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 10:19:15,815 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:19:15,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:15,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1503057984, now seen corresponding path program 1 times [2022-12-14 10:19:15,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:15,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391927247] [2022-12-14 10:19:15,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:15,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-12-14 10:19:16,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:16,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391927247] [2022-12-14 10:19:16,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391927247] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:19:16,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:19:16,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:19:16,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059888941] [2022-12-14 10:19:16,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:19:16,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:19:16,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:16,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:19:16,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:19:16,085 INFO L87 Difference]: Start difference. First operand 5317 states and 7630 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) [2022-12-14 10:19:18,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:18,898 INFO L93 Difference]: Finished difference Result 5323 states and 7635 transitions. [2022-12-14 10:19:18,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:19:18,898 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 176 [2022-12-14 10:19:18,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:18,909 INFO L225 Difference]: With dead ends: 5323 [2022-12-14 10:19:18,909 INFO L226 Difference]: Without dead ends: 5321 [2022-12-14 10:19:18,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:19:18,910 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1338 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:18,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 10:19:18,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5321 states. [2022-12-14 10:19:19,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5321 to 5321. [2022-12-14 10:19:19,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5321 states, 3081 states have (on average 1.2719896137617657) internal successors, (3919), 3271 states have internal predecessors, (3919), 1835 states have call successors, (1835), 474 states have call predecessors, (1835), 402 states have return successors, (1879), 1610 states have call predecessors, (1879), 1831 states have call successors, (1879) [2022-12-14 10:19:19,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5321 states to 5321 states and 7633 transitions. [2022-12-14 10:19:19,220 INFO L78 Accepts]: Start accepts. Automaton has 5321 states and 7633 transitions. Word has length 176 [2022-12-14 10:19:19,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:19,220 INFO L495 AbstractCegarLoop]: Abstraction has 5321 states and 7633 transitions. [2022-12-14 10:19:19,220 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) [2022-12-14 10:19:19,221 INFO L276 IsEmpty]: Start isEmpty. Operand 5321 states and 7633 transitions. [2022-12-14 10:19:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-12-14 10:19:19,222 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:19,222 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:19,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 10:19:19,222 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:19:19,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:19,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1963784180, now seen corresponding path program 1 times [2022-12-14 10:19:19,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:19,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315087333] [2022-12-14 10:19:19,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:19,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-12-14 10:19:19,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:19,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315087333] [2022-12-14 10:19:19,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315087333] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:19:19,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:19:19,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:19:19,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361418837] [2022-12-14 10:19:19,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:19:19,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:19:19,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:19,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:19:19,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:19:19,480 INFO L87 Difference]: Start difference. First operand 5321 states and 7633 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-12-14 10:19:22,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:22,697 INFO L93 Difference]: Finished difference Result 6185 states and 8739 transitions. [2022-12-14 10:19:22,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:19:22,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 180 [2022-12-14 10:19:22,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:22,709 INFO L225 Difference]: With dead ends: 6185 [2022-12-14 10:19:22,710 INFO L226 Difference]: Without dead ends: 6183 [2022-12-14 10:19:22,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:19:22,711 INFO L413 NwaCegarLoop]: 1374 mSDtfsCounter, 930 mSDsluCounter, 3349 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 4723 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:22,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 4723 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 10:19:22,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6183 states. [2022-12-14 10:19:23,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6183 to 6141. [2022-12-14 10:19:23,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6141 states, 3485 states have (on average 1.2556671449067431) internal successors, (4376), 3690 states have internal predecessors, (4376), 2131 states have call successors, (2131), 630 states have call predecessors, (2131), 522 states have return successors, (2181), 1864 states have call predecessors, (2181), 2127 states have call successors, (2181) [2022-12-14 10:19:23,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6141 states to 6141 states and 8688 transitions. [2022-12-14 10:19:23,078 INFO L78 Accepts]: Start accepts. Automaton has 6141 states and 8688 transitions. Word has length 180 [2022-12-14 10:19:23,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:23,079 INFO L495 AbstractCegarLoop]: Abstraction has 6141 states and 8688 transitions. [2022-12-14 10:19:23,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-12-14 10:19:23,079 INFO L276 IsEmpty]: Start isEmpty. Operand 6141 states and 8688 transitions. [2022-12-14 10:19:23,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-12-14 10:19:23,080 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:23,080 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 9, 9, 7, 7, 7, 7, 7, 7, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:23,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 10:19:23,080 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:19:23,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:23,081 INFO L85 PathProgramCache]: Analyzing trace with hash 267517152, now seen corresponding path program 1 times [2022-12-14 10:19:23,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:23,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782439940] [2022-12-14 10:19:23,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:23,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:23,376 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2022-12-14 10:19:23,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:23,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782439940] [2022-12-14 10:19:23,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782439940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:19:23,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:19:23,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:19:23,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850610838] [2022-12-14 10:19:23,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:19:23,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:19:23,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:19:23,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:19:23,379 INFO L87 Difference]: Start difference. First operand 6141 states and 8688 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 10:19:25,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:25,686 INFO L93 Difference]: Finished difference Result 6147 states and 8693 transitions. [2022-12-14 10:19:25,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:19:25,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 186 [2022-12-14 10:19:25,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:25,699 INFO L225 Difference]: With dead ends: 6147 [2022-12-14 10:19:25,699 INFO L226 Difference]: Without dead ends: 6145 [2022-12-14 10:19:25,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:19:25,701 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1338 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:25,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 10:19:25,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6145 states. [2022-12-14 10:19:26,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6145 to 6145. [2022-12-14 10:19:26,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6145 states, 3488 states have (on average 1.255447247706422) internal successors, (4379), 3693 states have internal predecessors, (4379), 2131 states have call successors, (2131), 631 states have call predecessors, (2131), 523 states have return successors, (2181), 1864 states have call predecessors, (2181), 2127 states have call successors, (2181) [2022-12-14 10:19:26,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 8691 transitions. [2022-12-14 10:19:26,082 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 8691 transitions. Word has length 186 [2022-12-14 10:19:26,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:26,083 INFO L495 AbstractCegarLoop]: Abstraction has 6145 states and 8691 transitions. [2022-12-14 10:19:26,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 10:19:26,083 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 8691 transitions. [2022-12-14 10:19:26,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-12-14 10:19:26,084 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:26,084 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:26,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 10:19:26,084 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:19:26,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:26,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1304127986, now seen corresponding path program 1 times [2022-12-14 10:19:26,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:26,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570528237] [2022-12-14 10:19:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:26,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2022-12-14 10:19:26,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:26,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570528237] [2022-12-14 10:19:26,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570528237] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:19:26,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:19:26,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:19:26,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415736908] [2022-12-14 10:19:26,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:19:26,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:19:26,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:26,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:19:26,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:19:26,335 INFO L87 Difference]: Start difference. First operand 6145 states and 8691 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 10:19:29,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:29,535 INFO L93 Difference]: Finished difference Result 6151 states and 8696 transitions. [2022-12-14 10:19:29,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:19:29,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (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 183 [2022-12-14 10:19:29,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:29,548 INFO L225 Difference]: With dead ends: 6151 [2022-12-14 10:19:29,548 INFO L226 Difference]: Without dead ends: 6147 [2022-12-14 10:19:29,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:19:29,550 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1339 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:29,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 3584 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-14 10:19:29,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6147 states. [2022-12-14 10:19:29,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6147 to 6147. [2022-12-14 10:19:29,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6147 states, 3490 states have (on average 1.2550143266475644) internal successors, (4380), 3694 states have internal predecessors, (4380), 2131 states have call successors, (2131), 632 states have call predecessors, (2131), 523 states have return successors, (2181), 1864 states have call predecessors, (2181), 2127 states have call successors, (2181) [2022-12-14 10:19:29,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6147 states to 6147 states and 8692 transitions. [2022-12-14 10:19:29,954 INFO L78 Accepts]: Start accepts. Automaton has 6147 states and 8692 transitions. Word has length 183 [2022-12-14 10:19:29,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:29,954 INFO L495 AbstractCegarLoop]: Abstraction has 6147 states and 8692 transitions. [2022-12-14 10:19:29,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 10:19:29,954 INFO L276 IsEmpty]: Start isEmpty. Operand 6147 states and 8692 transitions. [2022-12-14 10:19:29,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-12-14 10:19:29,956 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:29,956 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 7, 7, 7, 7, 7, 7, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:29,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 10:19:29,956 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)] === [2022-12-14 10:19:29,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:29,956 INFO L85 PathProgramCache]: Analyzing trace with hash 722569600, now seen corresponding path program 1 times [2022-12-14 10:19:29,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:29,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250056127] [2022-12-14 10:19:29,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:29,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2022-12-14 10:19:30,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:30,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250056127] [2022-12-14 10:19:30,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250056127] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:19:30,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:19:30,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:19:30,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292774082] [2022-12-14 10:19:30,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:19:30,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:19:30,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:30,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:19:30,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:19:30,231 INFO L87 Difference]: Start difference. First operand 6147 states and 8692 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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) [2022-12-14 10:19:33,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:33,383 INFO L93 Difference]: Finished difference Result 6147 states and 8692 transitions. [2022-12-14 10:19:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:19:33,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 196 [2022-12-14 10:19:33,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:33,394 INFO L225 Difference]: With dead ends: 6147 [2022-12-14 10:19:33,394 INFO L226 Difference]: Without dead ends: 5988 [2022-12-14 10:19:33,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:19:33,396 INFO L413 NwaCegarLoop]: 1199 mSDtfsCounter, 1334 mSDsluCounter, 2382 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:33,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 3581 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-14 10:19:33,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5988 states. [2022-12-14 10:19:33,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5988 to 5988. [2022-12-14 10:19:33,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5988 states, 3436 states have (on average 1.2485448195576252) internal successors, (4290), 3604 states have internal predecessors, (4290), 2042 states have call successors, (2042), 605 states have call predecessors, (2042), 508 states have return successors, (2096), 1822 states have call predecessors, (2096), 2042 states have call successors, (2096) [2022-12-14 10:19:33,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5988 states to 5988 states and 8428 transitions. [2022-12-14 10:19:33,813 INFO L78 Accepts]: Start accepts. Automaton has 5988 states and 8428 transitions. Word has length 196 [2022-12-14 10:19:33,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:33,813 INFO L495 AbstractCegarLoop]: Abstraction has 5988 states and 8428 transitions. [2022-12-14 10:19:33,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-12-14 10:19:33,813 INFO L276 IsEmpty]: Start isEmpty. Operand 5988 states and 8428 transitions. [2022-12-14 10:19:33,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-12-14 10:19:33,814 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:33,815 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:33,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 10:19:33,815 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:19:33,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:33,815 INFO L85 PathProgramCache]: Analyzing trace with hash -350126941, now seen corresponding path program 1 times [2022-12-14 10:19:33,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:33,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908840280] [2022-12-14 10:19:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:33,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2022-12-14 10:19:34,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:34,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908840280] [2022-12-14 10:19:34,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908840280] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:19:34,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:19:34,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:19:34,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930428386] [2022-12-14 10:19:34,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:19:34,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:19:34,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:34,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:19:34,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:19:34,297 INFO L87 Difference]: Start difference. First operand 5988 states and 8428 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 10:19:37,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:37,807 INFO L93 Difference]: Finished difference Result 6001 states and 8439 transitions. [2022-12-14 10:19:37,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:19:37,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 208 [2022-12-14 10:19:37,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:37,823 INFO L225 Difference]: With dead ends: 6001 [2022-12-14 10:19:37,823 INFO L226 Difference]: Without dead ends: 5999 [2022-12-14 10:19:37,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:19:37,825 INFO L413 NwaCegarLoop]: 1322 mSDtfsCounter, 856 mSDsluCounter, 3262 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 4584 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:37,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 4584 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 10:19:37,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5999 states. [2022-12-14 10:19:38,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5999 to 5988. [2022-12-14 10:19:38,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5988 states, 3436 states have (on average 1.2453434225844005) internal successors, (4279), 3604 states have internal predecessors, (4279), 2042 states have call successors, (2042), 605 states have call predecessors, (2042), 508 states have return successors, (2096), 1822 states have call predecessors, (2096), 2042 states have call successors, (2096) [2022-12-14 10:19:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5988 states to 5988 states and 8417 transitions. [2022-12-14 10:19:38,238 INFO L78 Accepts]: Start accepts. Automaton has 5988 states and 8417 transitions. Word has length 208 [2022-12-14 10:19:38,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:38,238 INFO L495 AbstractCegarLoop]: Abstraction has 5988 states and 8417 transitions. [2022-12-14 10:19:38,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 10:19:38,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5988 states and 8417 transitions. [2022-12-14 10:19:38,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2022-12-14 10:19:38,243 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:38,244 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 13, 7, 7, 7, 7, 7, 7, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:38,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 10:19:38,244 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:19:38,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:38,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2096923755, now seen corresponding path program 1 times [2022-12-14 10:19:38,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:38,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682470592] [2022-12-14 10:19:38,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:38,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:38,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2725 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2725 trivial. 0 not checked. [2022-12-14 10:19:38,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:38,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682470592] [2022-12-14 10:19:38,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682470592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:19:38,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:19:38,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:19:38,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37021745] [2022-12-14 10:19:38,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:19:38,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:19:38,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:38,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:19:38,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:19:38,663 INFO L87 Difference]: Start difference. First operand 5988 states and 8417 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-12-14 10:19:40,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:40,870 INFO L93 Difference]: Finished difference Result 11947 states and 16879 transitions. [2022-12-14 10:19:40,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:19:40,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 552 [2022-12-14 10:19:40,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:40,887 INFO L225 Difference]: With dead ends: 11947 [2022-12-14 10:19:40,887 INFO L226 Difference]: Without dead ends: 6028 [2022-12-14 10:19:40,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:19:40,902 INFO L413 NwaCegarLoop]: 1155 mSDtfsCounter, 2 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:40,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2303 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 10:19:40,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6028 states. [2022-12-14 10:19:41,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6028 to 5996. [2022-12-14 10:19:41,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5996 states, 3444 states have (on average 1.244773519163763) internal successors, (4287), 3612 states have internal predecessors, (4287), 2042 states have call successors, (2042), 605 states have call predecessors, (2042), 508 states have return successors, (2096), 1822 states have call predecessors, (2096), 2042 states have call successors, (2096) [2022-12-14 10:19:41,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5996 states to 5996 states and 8425 transitions. [2022-12-14 10:19:41,339 INFO L78 Accepts]: Start accepts. Automaton has 5996 states and 8425 transitions. Word has length 552 [2022-12-14 10:19:41,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:41,340 INFO L495 AbstractCegarLoop]: Abstraction has 5996 states and 8425 transitions. [2022-12-14 10:19:41,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-12-14 10:19:41,340 INFO L276 IsEmpty]: Start isEmpty. Operand 5996 states and 8425 transitions. [2022-12-14 10:19:41,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2022-12-14 10:19:41,347 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:41,347 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 13, 7, 7, 7, 7, 7, 7, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:41,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 10:19:41,347 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 10:19:41,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:41,348 INFO L85 PathProgramCache]: Analyzing trace with hash -767357221, now seen corresponding path program 1 times [2022-12-14 10:19:41,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:41,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593170898] [2022-12-14 10:19:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:41,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:41,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3225 trivial. 0 not checked. [2022-12-14 10:19:41,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:41,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593170898] [2022-12-14 10:19:41,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593170898] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:19:41,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183102246] [2022-12-14 10:19:41,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:41,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:19:41,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:19:41,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:19:41,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d928faba-4c40-4018-9968-9846daa27495/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:19:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:42,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 6634 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:19:42,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:19:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3226 backedges. 588 proven. 1 refuted. 0 times theorem prover too weak. 2637 trivial. 0 not checked. [2022-12-14 10:19:42,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:19:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3225 trivial. 0 not checked. [2022-12-14 10:19:43,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183102246] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:19:43,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [558224097] [2022-12-14 10:19:43,414 INFO L159 IcfgInterpreter]: Started Sifa with 201 locations of interest [2022-12-14 10:19:43,414 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:19:43,418 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:19:43,423 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:19:43,424 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:19:51,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-12-14 10:19:52,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-12-14 10:19:53,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21