./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 01:07:36,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:07:36,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:07:37,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:07:37,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:07:37,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:07:37,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:07:37,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:07:37,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:07:37,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:07:37,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:07:37,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:07:37,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:07:37,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:07:37,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:07:37,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:07:37,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:07:37,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:07:37,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:07:37,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:07:37,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:07:37,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:07:37,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:07:37,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:07:37,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:07:37,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:07:37,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:07:37,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:07:37,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:07:37,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:07:37,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:07:37,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:07:37,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:07:37,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:07:37,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:07:37,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:07:37,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:07:37,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:07:37,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:07:37,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:07:37,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:07:37,093 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 01:07:37,129 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:07:37,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:07:37,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:07:37,130 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:07:37,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:07:37,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:07:37,131 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:07:37,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:07:37,132 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:07:37,132 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:07:37,133 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:07:37,133 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:07:37,133 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:07:37,134 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:07:37,134 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:07:37,134 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:07:37,134 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:07:37,134 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:07:37,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:07:37,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:07:37,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:07:37,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:07:37,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:07:37,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:07:37,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:07:37,137 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:07:37,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:07:37,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:07:37,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:07:37,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:07:37,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:07:37,139 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:07:37,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:07:37,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:07:37,139 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:07:37,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:07:37,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:07:37,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:07:37,140 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_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 [2022-11-26 01:07:37,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:07:37,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:07:37,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:07:37,492 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:07:37,505 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:07:37,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2022-11-26 01:07:40,687 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:07:41,449 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:07:41,450 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2022-11-26 01:07:41,515 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur/data/995fd4536/12a628240aa04f1082a4cdc787be3825/FLAG5cb651327 [2022-11-26 01:07:41,533 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur/data/995fd4536/12a628240aa04f1082a4cdc787be3825 [2022-11-26 01:07:41,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:07:41,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:07:41,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:07:41,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:07:41,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:07:41,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:07:41" (1/1) ... [2022-11-26 01:07:41,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd2748c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:41, skipping insertion in model container [2022-11-26 01:07:41,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:07:41" (1/1) ... [2022-11-26 01:07:41,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:07:41,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:07:42,597 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-11-26 01:07:42,609 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-11-26 01:07:42,620 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-11-26 01:07:42,672 WARN L623 FunctionHandler]: Unknown extern function ioremap_nocache [2022-11-26 01:07:42,761 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-11-26 01:07:42,832 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-11-26 01:07:42,833 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-26 01:07:42,848 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-26 01:07:42,855 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 01:07:42,879 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_irq [2022-11-26 01:07:43,215 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 01:07:43,221 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-26 01:07:43,236 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 01:07:43,257 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 01:07:43,258 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 01:07:43,263 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 01:07:43,279 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-11-26 01:07:43,289 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_config [2022-11-26 01:07:43,291 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_window [2022-11-26 01:07:43,293 WARN L623 FunctionHandler]: Unknown extern function pcmcia_map_mem_page [2022-11-26 01:07:43,299 WARN L623 FunctionHandler]: Unknown extern function pcmcia_parse_tuple [2022-11-26 01:07:43,309 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_tuple [2022-11-26 01:07:43,310 WARN L623 FunctionHandler]: Unknown extern function pcmcia_get_tuple [2022-11-26 01:07:43,311 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-26 01:07:43,319 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 01:07:43,326 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 01:07:43,334 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-11-26 01:07:43,340 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_config [2022-11-26 01:07:43,345 WARN L623 FunctionHandler]: Unknown extern function pcmcia_get_mac_from_cis [2022-11-26 01:07:43,354 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-11-26 01:07:43,355 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-11-26 01:07:43,360 WARN L623 FunctionHandler]: Unknown extern function request_firmware [2022-11-26 01:07:43,361 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 01:07:43,362 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 01:07:43,363 WARN L623 FunctionHandler]: Unknown extern function release_firmware [2022-11-26 01:07:43,375 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_tuple [2022-11-26 01:07:43,379 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 01:07:43,384 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-26 01:07:43,392 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 01:07:43,393 WARN L623 FunctionHandler]: Unknown extern function netif_device_attach [2022-11-26 01:07:43,399 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 01:07:43,402 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:43,402 WARN L623 FunctionHandler]: Unknown extern function pcmcia_fixup_iowidth [2022-11-26 01:07:43,405 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 01:07:43,410 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_irq [2022-11-26 01:07:43,411 WARN L623 FunctionHandler]: Unknown extern function pcmcia_enable_device [2022-11-26 01:07:43,412 WARN L623 FunctionHandler]: Unknown extern function dev_notice [2022-11-26 01:07:43,414 WARN L623 FunctionHandler]: Unknown extern function dev_notice [2022-11-26 01:07:43,421 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-26 01:07:43,422 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:43,422 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:43,432 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:43,432 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 01:07:43,436 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:43,437 WARN L623 FunctionHandler]: Unknown extern function netdev_notice [2022-11-26 01:07:43,441 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 01:07:43,443 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-11-26 01:07:43,444 WARN L623 FunctionHandler]: Unknown extern function pcmcia_disable_device [2022-11-26 01:07:43,484 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 01:07:43,488 WARN L623 FunctionHandler]: Unknown extern function pcmcia_dev_present [2022-11-26 01:07:43,489 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:43,492 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-11-26 01:07:43,493 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-26 01:07:43,497 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 01:07:43,507 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 01:07:43,508 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-26 01:07:43,519 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:43,523 WARN L623 FunctionHandler]: Unknown extern function netdev_notice [2022-11-26 01:07:43,526 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:43,528 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:43,528 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 01:07:43,529 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-26 01:07:43,532 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:43,541 WARN L623 FunctionHandler]: Unknown extern function netdev_notice [2022-11-26 01:07:43,549 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:43,553 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:43,555 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:43,557 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:43,561 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:43,563 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:43,568 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 01:07:43,570 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:43,572 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:43,573 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-26 01:07:43,574 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-11-26 01:07:43,574 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-11-26 01:07:43,578 WARN L623 FunctionHandler]: Unknown extern function crc32_le [2022-11-26 01:07:43,579 WARN L623 FunctionHandler]: Unknown extern function bitrev32 [2022-11-26 01:07:43,582 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:43,587 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:43,588 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 01:07:43,599 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:43,600 WARN L623 FunctionHandler]: Unknown extern function trace_hardirqs_off [2022-11-26 01:07:43,600 WARN L623 FunctionHandler]: Unknown extern function trace_hardirqs_off [2022-11-26 01:07:43,600 WARN L623 FunctionHandler]: Unknown extern function trace_hardirqs_on [2022-11-26 01:07:43,601 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-26 01:07:43,602 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:43,603 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:43,605 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:43,607 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:43,608 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:43,610 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:43,614 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:43,616 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-26 01:07:43,622 WARN L623 FunctionHandler]: Unknown extern function mii_link_ok [2022-11-26 01:07:43,649 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-11-26 01:07:43,650 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-11-26 01:07:43,658 WARN L623 FunctionHandler]: Unknown extern function mii_ethtool_gset [2022-11-26 01:07:43,669 WARN L623 FunctionHandler]: Unknown extern function mii_ethtool_sset [2022-11-26 01:07:43,683 WARN L623 FunctionHandler]: Unknown extern function mii_nway_restart [2022-11-26 01:07:43,688 WARN L623 FunctionHandler]: Unknown extern function generic_mii_ioctl [2022-11-26 01:07:44,037 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-11-26 01:07:44,039 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-11-26 01:07:44,040 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-11-26 01:07:44,047 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-26 01:07:44,049 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-26 01:07:44,049 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-26 01:07:44,055 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-26 01:07:44,056 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-26 01:07:44,061 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-11-26 01:07:44,084 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-26 01:07:44,085 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-26 01:07:44,088 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-11-26 01:07:44,089 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-26 01:07:44,089 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-26 01:07:44,090 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-11-26 01:07:44,092 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-26 01:07:44,093 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-26 01:07:44,093 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-26 01:07:44,094 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 01:07:44,095 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 01:07:44,095 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 01:07:44,096 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 01:07:44,096 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 01:07:44,096 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 01:07:44,097 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 01:07:44,097 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 01:07:44,097 WARN L623 FunctionHandler]: Unknown extern function pcmcia_register_driver [2022-11-26 01:07:44,098 WARN L623 FunctionHandler]: Unknown extern function pcmcia_unregister_driver [2022-11-26 01:07:44,172 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-11-26 01:07:44,172 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-11-26 01:07:44,182 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-11-26 01:07:44,707 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_d24d9a7d-6dd9-4d77-a462-cb713e54c112/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2022-11-26 01:07:44,711 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_d24d9a7d-6dd9-4d77-a462-cb713e54c112/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2022-11-26 01:07:44,712 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_d24d9a7d-6dd9-4d77-a462-cb713e54c112/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2022-11-26 01:07:44,712 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_d24d9a7d-6dd9-4d77-a462-cb713e54c112/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2022-11-26 01:07:44,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:07:44,767 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:07:44,922 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-11-26 01:07:44,923 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-11-26 01:07:44,923 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-11-26 01:07:44,924 WARN L623 FunctionHandler]: Unknown extern function ioremap_nocache [2022-11-26 01:07:44,926 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-11-26 01:07:44,928 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-11-26 01:07:44,928 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-26 01:07:44,929 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-26 01:07:44,930 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 01:07:44,931 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_irq [2022-11-26 01:07:44,935 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 01:07:44,937 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-26 01:07:44,939 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 01:07:44,941 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 01:07:44,942 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 01:07:44,942 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 01:07:44,944 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-11-26 01:07:44,945 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_config [2022-11-26 01:07:44,946 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_window [2022-11-26 01:07:44,947 WARN L623 FunctionHandler]: Unknown extern function pcmcia_map_mem_page [2022-11-26 01:07:44,949 WARN L623 FunctionHandler]: Unknown extern function pcmcia_parse_tuple [2022-11-26 01:07:44,952 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_tuple [2022-11-26 01:07:44,952 WARN L623 FunctionHandler]: Unknown extern function pcmcia_get_tuple [2022-11-26 01:07:44,953 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-26 01:07:44,954 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 01:07:44,956 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 01:07:44,958 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-11-26 01:07:44,959 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_config [2022-11-26 01:07:44,960 WARN L623 FunctionHandler]: Unknown extern function pcmcia_get_mac_from_cis [2022-11-26 01:07:44,961 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-11-26 01:07:44,962 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_io [2022-11-26 01:07:44,963 WARN L623 FunctionHandler]: Unknown extern function request_firmware [2022-11-26 01:07:44,964 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 01:07:44,964 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 01:07:44,965 WARN L623 FunctionHandler]: Unknown extern function release_firmware [2022-11-26 01:07:44,967 WARN L623 FunctionHandler]: Unknown extern function pcmcia_loop_tuple [2022-11-26 01:07:44,969 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 01:07:44,970 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-11-26 01:07:44,972 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 01:07:44,973 WARN L623 FunctionHandler]: Unknown extern function netif_device_attach [2022-11-26 01:07:44,974 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 01:07:44,976 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:44,976 WARN L623 FunctionHandler]: Unknown extern function pcmcia_fixup_iowidth [2022-11-26 01:07:44,978 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 01:07:44,979 WARN L623 FunctionHandler]: Unknown extern function pcmcia_request_irq [2022-11-26 01:07:44,979 WARN L623 FunctionHandler]: Unknown extern function pcmcia_enable_device [2022-11-26 01:07:44,980 WARN L623 FunctionHandler]: Unknown extern function dev_notice [2022-11-26 01:07:44,981 WARN L623 FunctionHandler]: Unknown extern function dev_notice [2022-11-26 01:07:44,987 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-11-26 01:07:44,988 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:44,989 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:44,989 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:44,989 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 01:07:44,991 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:44,991 WARN L623 FunctionHandler]: Unknown extern function netdev_notice [2022-11-26 01:07:44,993 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 01:07:44,994 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-11-26 01:07:44,994 WARN L623 FunctionHandler]: Unknown extern function pcmcia_disable_device [2022-11-26 01:07:44,999 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 01:07:44,999 WARN L623 FunctionHandler]: Unknown extern function pcmcia_dev_present [2022-11-26 01:07:45,000 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:45,001 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-11-26 01:07:45,001 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-26 01:07:45,003 WARN L623 FunctionHandler]: Unknown extern function __dynamic_dev_dbg [2022-11-26 01:07:45,005 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 01:07:45,006 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-11-26 01:07:45,007 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:45,009 WARN L623 FunctionHandler]: Unknown extern function netdev_notice [2022-11-26 01:07:45,011 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:45,012 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:45,013 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 01:07:45,013 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-26 01:07:45,015 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:45,018 WARN L623 FunctionHandler]: Unknown extern function netdev_notice [2022-11-26 01:07:45,056 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:45,060 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:45,061 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:45,062 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:45,065 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:45,066 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:45,070 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-11-26 01:07:45,071 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:45,073 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:45,074 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-26 01:07:45,074 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-11-26 01:07:45,076 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-11-26 01:07:45,079 WARN L623 FunctionHandler]: Unknown extern function crc32_le [2022-11-26 01:07:45,080 WARN L623 FunctionHandler]: Unknown extern function bitrev32 [2022-11-26 01:07:45,084 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:45,090 WARN L623 FunctionHandler]: Unknown extern function __dynamic_netdev_dbg [2022-11-26 01:07:45,090 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-26 01:07:45,096 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:45,097 WARN L623 FunctionHandler]: Unknown extern function trace_hardirqs_off [2022-11-26 01:07:45,098 WARN L623 FunctionHandler]: Unknown extern function trace_hardirqs_off [2022-11-26 01:07:45,098 WARN L623 FunctionHandler]: Unknown extern function trace_hardirqs_on [2022-11-26 01:07:45,099 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-26 01:07:45,100 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:45,101 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:45,102 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:45,105 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:45,106 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:45,109 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:45,109 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-26 01:07:45,110 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-26 01:07:45,111 WARN L623 FunctionHandler]: Unknown extern function mii_link_ok [2022-11-26 01:07:45,115 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-11-26 01:07:45,116 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-11-26 01:07:45,117 WARN L623 FunctionHandler]: Unknown extern function mii_ethtool_gset [2022-11-26 01:07:45,119 WARN L623 FunctionHandler]: Unknown extern function mii_ethtool_sset [2022-11-26 01:07:45,121 WARN L623 FunctionHandler]: Unknown extern function mii_nway_restart [2022-11-26 01:07:45,123 WARN L623 FunctionHandler]: Unknown extern function generic_mii_ioctl [2022-11-26 01:07:45,149 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-11-26 01:07:45,150 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-11-26 01:07:45,151 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-11-26 01:07:45,158 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-26 01:07:45,161 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-26 01:07:45,161 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-26 01:07:45,163 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-26 01:07:45,163 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-26 01:07:45,166 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-11-26 01:07:45,199 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-11-26 01:07:45,199 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-11-26 01:07:45,205 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-11-26 01:07:45,207 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-26 01:07:45,208 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-26 01:07:45,209 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-11-26 01:07:45,213 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-26 01:07:45,213 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-26 01:07:45,214 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-26 01:07:45,214 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 01:07:45,215 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 01:07:45,215 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 01:07:45,217 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 01:07:45,217 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 01:07:45,217 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 01:07:45,223 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 01:07:45,223 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-11-26 01:07:45,224 WARN L623 FunctionHandler]: Unknown extern function pcmcia_register_driver [2022-11-26 01:07:45,224 WARN L623 FunctionHandler]: Unknown extern function pcmcia_unregister_driver [2022-11-26 01:07:45,230 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-11-26 01:07:45,230 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-11-26 01:07:45,231 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-11-26 01:07:45,264 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_d24d9a7d-6dd9-4d77-a462-cb713e54c112/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2022-11-26 01:07:45,265 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_d24d9a7d-6dd9-4d77-a462-cb713e54c112/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2022-11-26 01:07:45,265 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_d24d9a7d-6dd9-4d77-a462-cb713e54c112/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2022-11-26 01:07:45,265 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_d24d9a7d-6dd9-4d77-a462-cb713e54c112/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2022-11-26 01:07:45,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:07:45,497 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:07:45,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:45 WrapperNode [2022-11-26 01:07:45,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:07:45,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:07:45,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:07:45,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:07:45,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:45" (1/1) ... [2022-11-26 01:07:45,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:45" (1/1) ... [2022-11-26 01:07:45,849 INFO L138 Inliner]: procedures = 407, calls = 2608, calls flagged for inlining = 197, calls inlined = 171, statements flattened = 5040 [2022-11-26 01:07:45,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:07:45,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:07:45,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:07:45,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:07:45,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:45" (1/1) ... [2022-11-26 01:07:45,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:45" (1/1) ... [2022-11-26 01:07:45,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:45" (1/1) ... [2022-11-26 01:07:45,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:45" (1/1) ... [2022-11-26 01:07:46,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:45" (1/1) ... [2022-11-26 01:07:46,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:45" (1/1) ... [2022-11-26 01:07:46,092 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:45" (1/1) ... [2022-11-26 01:07:46,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:45" (1/1) ... [2022-11-26 01:07:46,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:07:46,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:07:46,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:07:46,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:07:46,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:45" (1/1) ... [2022-11-26 01:07:46,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:07:46,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:07:46,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:07:46,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:07:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-26 01:07:46,347 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-26 01:07:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_detach [2022-11-26 01:07:46,347 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_detach [2022-11-26 01:07:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-11-26 01:07:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-11-26 01:07:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-26 01:07:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-26 01:07:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure mhz_3288_power [2022-11-26 01:07:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure mhz_3288_power [2022-11-26 01:07:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-26 01:07:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-26 01:07:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_request_io [2022-11-26 01:07:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_request_io [2022-11-26 01:07:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_70 [2022-11-26 01:07:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_70 [2022-11-26 01:07:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-26 01:07:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-26 01:07:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-26 01:07:46,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-26 01:07:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-26 01:07:46,353 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-26 01:07:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_resume [2022-11-26 01:07:46,353 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_resume [2022-11-26 01:07:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-26 01:07:46,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-26 01:07:46,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 01:07:46,354 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_suspend [2022-11-26 01:07:46,354 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_suspend [2022-11-26 01:07:46,354 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-26 01:07:46,354 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-26 01:07:46,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-26 01:07:46,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-26 01:07:46,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-26 01:07:46,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-26 01:07:46,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 01:07:46,355 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-26 01:07:46,355 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-26 01:07:46,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-26 01:07:46,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-26 01:07:46,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-26 01:07:46,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-26 01:07:46,355 INFO L130 BoogieDeclarations]: Found specification of procedure cvt_ascii_address [2022-11-26 01:07:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure cvt_ascii_address [2022-11-26 01:07:46,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-26 01:07:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-26 01:07:46,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 01:07:46,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-26 01:07:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-26 01:07:46,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-26 01:07:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-26 01:07:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smc91c92_cs_driver_exit_13_2 [2022-11-26 01:07:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smc91c92_cs_driver_exit_13_2 [2022-11-26 01:07:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:07:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-26 01:07:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-26 01:07:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-26 01:07:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-26 01:07:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 01:07:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-26 01:07:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-26 01:07:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure smc_tx_timeout [2022-11-26 01:07:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_tx_timeout [2022-11-26 01:07:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-26 01:07:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-26 01:07:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure smc_reset [2022-11-26 01:07:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_reset [2022-11-26 01:07:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-26 01:07:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-26 01:07:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-26 01:07:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-26 01:07:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:07:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:07:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-26 01:07:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-26 01:07:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure smc_hardware_send_packet [2022-11-26 01:07:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_hardware_send_packet [2022-11-26 01:07:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-26 01:07:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-26 01:07:46,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-26 01:07:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-26 01:07:46,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_smc_private [2022-11-26 01:07:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_smc_private [2022-11-26 01:07:46,363 INFO L130 BoogieDeclarations]: Found specification of procedure osi_load_firmware [2022-11-26 01:07:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure osi_load_firmware [2022-11-26 01:07:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-26 01:07:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-26 01:07:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure smc_set_xcvr [2022-11-26 01:07:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_set_xcvr [2022-11-26 01:07:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-26 01:07:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-26 01:07:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 01:07:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-26 01:07:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-26 01:07:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 01:07:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-26 01:07:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-26 01:07:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure mot_config [2022-11-26 01:07:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure mot_config [2022-11-26 01:07:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-26 01:07:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2022-11-26 01:07:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2022-11-26 01:07:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-26 01:07:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-26 01:07:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-26 01:07:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-26 01:07:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-26 01:07:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-26 01:07:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-26 01:07:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-26 01:07:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-26 01:07:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-26 01:07:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2022-11-26 01:07:46,368 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2022-11-26 01:07:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-26 01:07:46,368 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-26 01:07:46,383 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-26 01:07:46,383 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-26 01:07:46,383 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-26 01:07:46,383 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-26 01:07:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 01:07:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_tuple [2022-11-26 01:07:46,384 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_tuple [2022-11-26 01:07:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_release [2022-11-26 01:07:46,384 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_release [2022-11-26 01:07:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-26 01:07:46,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-26 01:07:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_smc_private [2022-11-26 01:07:46,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_smc_private [2022-11-26 01:07:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_config [2022-11-26 01:07:46,385 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_config [2022-11-26 01:07:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-26 01:07:46,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-26 01:07:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure smc_interrupt [2022-11-26 01:07:46,385 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_interrupt [2022-11-26 01:07:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-26 01:07:46,385 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-26 01:07:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 01:07:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-26 01:07:46,386 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-26 01:07:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-26 01:07:46,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-26 01:07:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-26 01:07:46,386 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-26 01:07:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-26 01:07:46,386 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-26 01:07:47,242 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:07:47,245 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:07:47,583 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-26 01:07:52,804 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-26 01:07:52,942 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:07:53,980 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:07:53,980 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 01:07:53,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:07:53 BoogieIcfgContainer [2022-11-26 01:07:53,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:07:53,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:07:53,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:07:53,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:07:53,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:07:41" (1/3) ... [2022-11-26 01:07:53,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659cb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:07:53, skipping insertion in model container [2022-11-26 01:07:53,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:45" (2/3) ... [2022-11-26 01:07:53,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659cb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:07:53, skipping insertion in model container [2022-11-26 01:07:53,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:07:53" (3/3) ... [2022-11-26 01:07:53,999 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2022-11-26 01:07:54,019 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:07:54,020 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-26 01:07:54,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:07:54,132 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;@16266b17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:07:54,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-26 01:07:54,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 1226 states, 693 states have (on average 1.2972582972582973) internal successors, (899), 714 states have internal predecessors, (899), 464 states have call successors, (464), 67 states have call predecessors, (464), 66 states have return successors, (458), 456 states have call predecessors, (458), 458 states have call successors, (458) [2022-11-26 01:07:54,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-26 01:07:54,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:54,178 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:07:54,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:07:54,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:54,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1031237655, now seen corresponding path program 1 times [2022-11-26 01:07:54,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:07:54,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154845030] [2022-11-26 01:07:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:54,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:07:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:55,270 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-26 01:07:55,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:07:55,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154845030] [2022-11-26 01:07:55,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154845030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:07:55,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:07:55,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:07:55,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026759300] [2022-11-26 01:07:55,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:07:55,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:07:55,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:07:55,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:07:55,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:07:55,332 INFO L87 Difference]: Start difference. First operand has 1226 states, 693 states have (on average 1.2972582972582973) internal successors, (899), 714 states have internal predecessors, (899), 464 states have call successors, (464), 67 states have call predecessors, (464), 66 states have return successors, (458), 456 states have call predecessors, (458), 458 states have call successors, (458) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-26 01:07:58,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:07:58,103 INFO L93 Difference]: Finished difference Result 3554 states and 5367 transitions. [2022-11-26 01:07:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:07:58,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2022-11-26 01:07:58,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:07:58,153 INFO L225 Difference]: With dead ends: 3554 [2022-11-26 01:07:58,153 INFO L226 Difference]: Without dead ends: 2343 [2022-11-26 01:07:58,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:07:58,175 INFO L413 NwaCegarLoop]: 2002 mSDtfsCounter, 1695 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 3550 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:07:58,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1695 Valid, 3550 Invalid, 489 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-26 01:07:58,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2022-11-26 01:07:58,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2339. [2022-11-26 01:07:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2339 states, 1336 states have (on average 1.2911676646706587) internal successors, (1725), 1377 states have internal predecessors, (1725), 872 states have call successors, (872), 129 states have call predecessors, (872), 128 states have return successors, (868), 864 states have call predecessors, (868), 868 states have call successors, (868) [2022-11-26 01:07:58,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2339 states to 2339 states and 3465 transitions. [2022-11-26 01:07:58,445 INFO L78 Accepts]: Start accepts. Automaton has 2339 states and 3465 transitions. Word has length 141 [2022-11-26 01:07:58,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:07:58,448 INFO L495 AbstractCegarLoop]: Abstraction has 2339 states and 3465 transitions. [2022-11-26 01:07:58,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-26 01:07:58,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2339 states and 3465 transitions. [2022-11-26 01:07:58,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-26 01:07:58,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:58,464 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:07:58,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 01:07:58,465 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:07:58,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:58,465 INFO L85 PathProgramCache]: Analyzing trace with hash -586008297, now seen corresponding path program 1 times [2022-11-26 01:07:58,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:07:58,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087699301] [2022-11-26 01:07:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:58,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:07:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-26 01:07:58,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:07:58,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087699301] [2022-11-26 01:07:58,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087699301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:07:58,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:07:58,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:07:58,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611035373] [2022-11-26 01:07:58,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:07:58,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:07:58,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:07:58,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:07:58,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:07:58,976 INFO L87 Difference]: Start difference. First operand 2339 states and 3465 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-26 01:08:02,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:02,076 INFO L93 Difference]: Finished difference Result 6545 states and 9657 transitions. [2022-11-26 01:08:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:08:02,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2022-11-26 01:08:02,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:02,115 INFO L225 Difference]: With dead ends: 6545 [2022-11-26 01:08:02,115 INFO L226 Difference]: Without dead ends: 4231 [2022-11-26 01:08:02,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:08:02,134 INFO L413 NwaCegarLoop]: 1932 mSDtfsCounter, 1424 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 3457 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:02,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 3457 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-26 01:08:02,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2022-11-26 01:08:02,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 4202. [2022-11-26 01:08:02,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4202 states, 2401 states have (on average 1.2811328613077884) internal successors, (3076), 2481 states have internal predecessors, (3076), 1555 states have call successors, (1555), 248 states have call predecessors, (1555), 243 states have return successors, (1551), 1532 states have call predecessors, (1551), 1551 states have call successors, (1551) [2022-11-26 01:08:02,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4202 states to 4202 states and 6182 transitions. [2022-11-26 01:08:02,522 INFO L78 Accepts]: Start accepts. Automaton has 4202 states and 6182 transitions. Word has length 149 [2022-11-26 01:08:02,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:02,525 INFO L495 AbstractCegarLoop]: Abstraction has 4202 states and 6182 transitions. [2022-11-26 01:08:02,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-26 01:08:02,525 INFO L276 IsEmpty]: Start isEmpty. Operand 4202 states and 6182 transitions. [2022-11-26 01:08:02,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-26 01:08:02,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:02,530 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:08:02,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 01:08:02,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:08:02,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:02,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1818964833, now seen corresponding path program 1 times [2022-11-26 01:08:02,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:02,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990287448] [2022-11-26 01:08:02,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:02,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:03,060 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-26 01:08:03,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:03,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990287448] [2022-11-26 01:08:03,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990287448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:03,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:03,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:08:03,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222177213] [2022-11-26 01:08:03,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:03,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:08:03,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:03,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:08:03,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:08:03,064 INFO L87 Difference]: Start difference. First operand 4202 states and 6182 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-26 01:08:04,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:04,480 INFO L93 Difference]: Finished difference Result 8345 states and 12266 transitions. [2022-11-26 01:08:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:08:04,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 159 [2022-11-26 01:08:04,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:04,509 INFO L225 Difference]: With dead ends: 8345 [2022-11-26 01:08:04,510 INFO L226 Difference]: Without dead ends: 4168 [2022-11-26 01:08:04,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:08:04,546 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 1730 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:04,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 1609 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-26 01:08:04,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4168 states. [2022-11-26 01:08:04,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4168 to 4168. [2022-11-26 01:08:04,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4168 states, 2387 states have (on average 1.278173439463762) internal successors, (3051), 2467 states have internal predecessors, (3051), 1531 states have call successors, (1531), 252 states have call predecessors, (1531), 247 states have return successors, (1527), 1508 states have call predecessors, (1527), 1527 states have call successors, (1527) [2022-11-26 01:08:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4168 states to 4168 states and 6109 transitions. [2022-11-26 01:08:05,005 INFO L78 Accepts]: Start accepts. Automaton has 4168 states and 6109 transitions. Word has length 159 [2022-11-26 01:08:05,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:05,006 INFO L495 AbstractCegarLoop]: Abstraction has 4168 states and 6109 transitions. [2022-11-26 01:08:05,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-26 01:08:05,007 INFO L276 IsEmpty]: Start isEmpty. Operand 4168 states and 6109 transitions. [2022-11-26 01:08:05,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-26 01:08:05,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:05,010 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:08:05,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 01:08:05,010 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:08:05,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:05,011 INFO L85 PathProgramCache]: Analyzing trace with hash -620947827, now seen corresponding path program 1 times [2022-11-26 01:08:05,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:05,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809428263] [2022-11-26 01:08:05,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:05,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-26 01:08:05,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:05,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809428263] [2022-11-26 01:08:05,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809428263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:05,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:05,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:08:05,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372276951] [2022-11-26 01:08:05,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:05,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:08:05,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:05,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:08:05,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:08:05,470 INFO L87 Difference]: Start difference. First operand 4168 states and 6109 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-26 01:08:06,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:06,809 INFO L93 Difference]: Finished difference Result 7535 states and 11000 transitions. [2022-11-26 01:08:06,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:08:06,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 158 [2022-11-26 01:08:06,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:06,829 INFO L225 Difference]: With dead ends: 7535 [2022-11-26 01:08:06,830 INFO L226 Difference]: Without dead ends: 3410 [2022-11-26 01:08:06,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:08:06,847 INFO L413 NwaCegarLoop]: 1321 mSDtfsCounter, 1467 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:06,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 1372 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-26 01:08:06,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2022-11-26 01:08:07,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 3410. [2022-11-26 01:08:07,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3410 states, 1991 states have (on average 1.2903063787041689) internal successors, (2569), 2049 states have internal predecessors, (2569), 1185 states have call successors, (1185), 236 states have call predecessors, (1185), 231 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-26 01:08:07,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 4935 transitions. [2022-11-26 01:08:07,198 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 4935 transitions. Word has length 158 [2022-11-26 01:08:07,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:07,200 INFO L495 AbstractCegarLoop]: Abstraction has 3410 states and 4935 transitions. [2022-11-26 01:08:07,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-26 01:08:07,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 4935 transitions. [2022-11-26 01:08:07,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-26 01:08:07,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:07,207 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:08:07,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 01:08:07,207 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:08:07,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:07,208 INFO L85 PathProgramCache]: Analyzing trace with hash 309615161, now seen corresponding path program 1 times [2022-11-26 01:08:07,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:07,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741755367] [2022-11-26 01:08:07,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:07,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:07,938 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2022-11-26 01:08:07,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:07,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741755367] [2022-11-26 01:08:07,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741755367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:07,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:07,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 01:08:07,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668549252] [2022-11-26 01:08:07,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:07,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 01:08:07,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:07,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 01:08:07,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:08:07,941 INFO L87 Difference]: Start difference. First operand 3410 states and 4935 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-26 01:08:09,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 01:08:10,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:10,714 INFO L93 Difference]: Finished difference Result 3416 states and 4940 transitions. [2022-11-26 01:08:10,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:08:10,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 183 [2022-11-26 01:08:10,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:10,740 INFO L225 Difference]: With dead ends: 3416 [2022-11-26 01:08:10,741 INFO L226 Difference]: Without dead ends: 3414 [2022-11-26 01:08:10,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:08:10,746 INFO L413 NwaCegarLoop]: 1304 mSDtfsCounter, 1456 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:10,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 3899 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-26 01:08:10,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2022-11-26 01:08:11,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 3414. [2022-11-26 01:08:11,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3414 states, 1994 states have (on average 1.2898696088264794) internal successors, (2572), 2052 states have internal predecessors, (2572), 1185 states have call successors, (1185), 237 states have call predecessors, (1185), 232 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-26 01:08:11,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3414 states to 3414 states and 4938 transitions. [2022-11-26 01:08:11,151 INFO L78 Accepts]: Start accepts. Automaton has 3414 states and 4938 transitions. Word has length 183 [2022-11-26 01:08:11,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:11,154 INFO L495 AbstractCegarLoop]: Abstraction has 3414 states and 4938 transitions. [2022-11-26 01:08:11,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-26 01:08:11,155 INFO L276 IsEmpty]: Start isEmpty. Operand 3414 states and 4938 transitions. [2022-11-26 01:08:11,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-26 01:08:11,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:11,159 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:08:11,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 01:08:11,160 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:08:11,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:11,160 INFO L85 PathProgramCache]: Analyzing trace with hash -250367062, now seen corresponding path program 1 times [2022-11-26 01:08:11,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:11,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657115602] [2022-11-26 01:08:11,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:11,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2022-11-26 01:08:11,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:11,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657115602] [2022-11-26 01:08:11,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657115602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:11,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:11,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 01:08:11,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194973163] [2022-11-26 01:08:11,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:11,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 01:08:11,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:11,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 01:08:11,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:08:11,884 INFO L87 Difference]: Start difference. First operand 3414 states and 4938 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-26 01:08:14,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 01:08:15,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:15,759 INFO L93 Difference]: Finished difference Result 3420 states and 4943 transitions. [2022-11-26 01:08:15,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:08:15,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 191 [2022-11-26 01:08:15,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:15,778 INFO L225 Difference]: With dead ends: 3420 [2022-11-26 01:08:15,778 INFO L226 Difference]: Without dead ends: 3418 [2022-11-26 01:08:15,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:08:15,783 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:15,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-26 01:08:15,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2022-11-26 01:08:16,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 3418. [2022-11-26 01:08:16,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 1997 states have (on average 1.2894341512268404) internal successors, (2575), 2055 states have internal predecessors, (2575), 1185 states have call successors, (1185), 238 states have call predecessors, (1185), 233 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-26 01:08:16,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 4941 transitions. [2022-11-26 01:08:16,105 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 4941 transitions. Word has length 191 [2022-11-26 01:08:16,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:16,108 INFO L495 AbstractCegarLoop]: Abstraction has 3418 states and 4941 transitions. [2022-11-26 01:08:16,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-26 01:08:16,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 4941 transitions. [2022-11-26 01:08:16,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-26 01:08:16,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:16,113 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:08:16,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 01:08:16,113 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:08:16,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:16,114 INFO L85 PathProgramCache]: Analyzing trace with hash 223436409, now seen corresponding path program 1 times [2022-11-26 01:08:16,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:16,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283314407] [2022-11-26 01:08:16,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:16,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2022-11-26 01:08:16,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:16,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283314407] [2022-11-26 01:08:16,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283314407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:16,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:16,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 01:08:16,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339466612] [2022-11-26 01:08:16,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:16,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 01:08:16,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:16,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 01:08:16,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:08:16,852 INFO L87 Difference]: Start difference. First operand 3418 states and 4941 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 01:08:19,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 01:08:20,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:20,493 INFO L93 Difference]: Finished difference Result 3424 states and 4946 transitions. [2022-11-26 01:08:20,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:08:20,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 193 [2022-11-26 01:08:20,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:20,513 INFO L225 Difference]: With dead ends: 3424 [2022-11-26 01:08:20,513 INFO L226 Difference]: Without dead ends: 3422 [2022-11-26 01:08:20,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:08:20,516 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1451 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:20,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-26 01:08:20,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2022-11-26 01:08:20,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 3422. [2022-11-26 01:08:20,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3422 states, 2000 states have (on average 1.289) internal successors, (2578), 2058 states have internal predecessors, (2578), 1185 states have call successors, (1185), 239 states have call predecessors, (1185), 234 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-26 01:08:20,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 4944 transitions. [2022-11-26 01:08:20,866 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 4944 transitions. Word has length 193 [2022-11-26 01:08:20,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:20,866 INFO L495 AbstractCegarLoop]: Abstraction has 3422 states and 4944 transitions. [2022-11-26 01:08:20,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-26 01:08:20,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 4944 transitions. [2022-11-26 01:08:20,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-26 01:08:20,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:20,872 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:08:20,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 01:08:20,872 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:08:20,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:20,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1115605334, now seen corresponding path program 1 times [2022-11-26 01:08:20,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:20,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922127056] [2022-11-26 01:08:20,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:20,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2022-11-26 01:08:21,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:21,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922127056] [2022-11-26 01:08:21,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922127056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:21,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:21,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 01:08:21,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917834996] [2022-11-26 01:08:21,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:21,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 01:08:21,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:21,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 01:08:21,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:08:21,542 INFO L87 Difference]: Start difference. First operand 3422 states and 4944 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-26 01:08:23,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:23,737 INFO L93 Difference]: Finished difference Result 3428 states and 4949 transitions. [2022-11-26 01:08:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:08:23,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 201 [2022-11-26 01:08:23,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:23,756 INFO L225 Difference]: With dead ends: 3428 [2022-11-26 01:08:23,756 INFO L226 Difference]: Without dead ends: 3426 [2022-11-26 01:08:23,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:08:23,759 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:23,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-26 01:08:23,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2022-11-26 01:08:24,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 3426. [2022-11-26 01:08:24,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 2003 states have (on average 1.288567149276086) internal successors, (2581), 2061 states have internal predecessors, (2581), 1185 states have call successors, (1185), 240 states have call predecessors, (1185), 235 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-26 01:08:24,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 4947 transitions. [2022-11-26 01:08:24,082 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 4947 transitions. Word has length 201 [2022-11-26 01:08:24,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:24,082 INFO L495 AbstractCegarLoop]: Abstraction has 3426 states and 4947 transitions. [2022-11-26 01:08:24,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-26 01:08:24,083 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 4947 transitions. [2022-11-26 01:08:24,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-26 01:08:24,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:24,089 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:08:24,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 01:08:24,090 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:08:24,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:24,090 INFO L85 PathProgramCache]: Analyzing trace with hash 14463922, now seen corresponding path program 1 times [2022-11-26 01:08:24,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:24,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497876074] [2022-11-26 01:08:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:24,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:24,723 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 695 trivial. 0 not checked. [2022-11-26 01:08:24,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:24,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497876074] [2022-11-26 01:08:24,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497876074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:24,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:24,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 01:08:24,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407942186] [2022-11-26 01:08:24,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:24,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 01:08:24,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:24,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 01:08:24,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:08:24,728 INFO L87 Difference]: Start difference. First operand 3426 states and 4947 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-26 01:08:27,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:27,091 INFO L93 Difference]: Finished difference Result 3432 states and 4952 transitions. [2022-11-26 01:08:27,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:08:27,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (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 207 [2022-11-26 01:08:27,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:27,107 INFO L225 Difference]: With dead ends: 3432 [2022-11-26 01:08:27,107 INFO L226 Difference]: Without dead ends: 3430 [2022-11-26 01:08:27,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:08:27,110 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:27,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1457 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-26 01:08:27,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2022-11-26 01:08:27,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 3430. [2022-11-26 01:08:27,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 2006 states have (on average 1.2881355932203389) internal successors, (2584), 2064 states have internal predecessors, (2584), 1185 states have call successors, (1185), 241 states have call predecessors, (1185), 236 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-26 01:08:27,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 4950 transitions. [2022-11-26 01:08:27,460 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 4950 transitions. Word has length 207 [2022-11-26 01:08:27,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:27,461 INFO L495 AbstractCegarLoop]: Abstraction has 3430 states and 4950 transitions. [2022-11-26 01:08:27,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-26 01:08:27,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 4950 transitions. [2022-11-26 01:08:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-26 01:08:27,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:27,467 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:08:27,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 01:08:27,467 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:08:27,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash -812078678, now seen corresponding path program 1 times [2022-11-26 01:08:27,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:27,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404167387] [2022-11-26 01:08:27,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:27,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked. [2022-11-26 01:08:28,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:28,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404167387] [2022-11-26 01:08:28,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404167387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:28,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:28,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 01:08:28,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071085293] [2022-11-26 01:08:28,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:28,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 01:08:28,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:28,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 01:08:28,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:08:28,125 INFO L87 Difference]: Start difference. First operand 3430 states and 4950 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-26 01:08:30,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 01:08:31,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:31,261 INFO L93 Difference]: Finished difference Result 3436 states and 4955 transitions. [2022-11-26 01:08:31,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:08:31,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 211 [2022-11-26 01:08:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:31,278 INFO L225 Difference]: With dead ends: 3436 [2022-11-26 01:08:31,278 INFO L226 Difference]: Without dead ends: 3434 [2022-11-26 01:08:31,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:08:31,282 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:31,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1456 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-26 01:08:31,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2022-11-26 01:08:31,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3434. [2022-11-26 01:08:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 2009 states have (on average 1.2877053260328521) internal successors, (2587), 2067 states have internal predecessors, (2587), 1185 states have call successors, (1185), 242 states have call predecessors, (1185), 237 states have return successors, (1181), 1162 states have call predecessors, (1181), 1181 states have call successors, (1181) [2022-11-26 01:08:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 4953 transitions. [2022-11-26 01:08:31,581 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 4953 transitions. Word has length 211 [2022-11-26 01:08:31,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:31,582 INFO L495 AbstractCegarLoop]: Abstraction has 3434 states and 4953 transitions. [2022-11-26 01:08:31,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-26 01:08:31,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 4953 transitions. [2022-11-26 01:08:31,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-26 01:08:31,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:31,588 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 7, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:08:31,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-26 01:08:31,589 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:08:31,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:31,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1088050354, now seen corresponding path program 1 times [2022-11-26 01:08:31,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:31,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018307687] [2022-11-26 01:08:31,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:31,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:32,226 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2022-11-26 01:08:32,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:32,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018307687] [2022-11-26 01:08:32,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018307687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:32,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:32,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 01:08:32,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265635164] [2022-11-26 01:08:32,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:32,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 01:08:32,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:32,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 01:08:32,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:08:32,229 INFO L87 Difference]: Start difference. First operand 3434 states and 4953 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-26 01:08:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:34,350 INFO L93 Difference]: Finished difference Result 3548 states and 5070 transitions. [2022-11-26 01:08:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:08:34,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 217 [2022-11-26 01:08:34,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:34,366 INFO L225 Difference]: With dead ends: 3548 [2022-11-26 01:08:34,366 INFO L226 Difference]: Without dead ends: 3546 [2022-11-26 01:08:34,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:08:34,370 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 1244 mSDsluCounter, 2851 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 4170 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:34,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 4170 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-26 01:08:34,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3546 states. [2022-11-26 01:08:34,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3546 to 3546. [2022-11-26 01:08:34,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3546 states, 2070 states have (on average 1.2821256038647344) internal successors, (2654), 2132 states have internal predecessors, (2654), 1209 states have call successors, (1209), 269 states have call predecessors, (1209), 264 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-11-26 01:08:34,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 5068 transitions. [2022-11-26 01:08:34,792 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 5068 transitions. Word has length 217 [2022-11-26 01:08:34,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:34,792 INFO L495 AbstractCegarLoop]: Abstraction has 3546 states and 5068 transitions. [2022-11-26 01:08:34,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-26 01:08:34,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 5068 transitions. [2022-11-26 01:08:34,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-26 01:08:34,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:34,797 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:08:34,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 01:08:34,797 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:08:34,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:34,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1388727309, now seen corresponding path program 1 times [2022-11-26 01:08:34,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:34,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760021111] [2022-11-26 01:08:34,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:34,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2022-11-26 01:08:35,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:35,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760021111] [2022-11-26 01:08:35,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760021111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:35,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:35,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 01:08:35,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509638339] [2022-11-26 01:08:35,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:35,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 01:08:35,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:35,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 01:08:35,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:08:35,454 INFO L87 Difference]: Start difference. First operand 3546 states and 5068 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-26 01:08:36,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 01:08:39,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:39,407 INFO L93 Difference]: Finished difference Result 3552 states and 5073 transitions. [2022-11-26 01:08:39,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:08:39,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 218 [2022-11-26 01:08:39,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:39,421 INFO L225 Difference]: With dead ends: 3552 [2022-11-26 01:08:39,421 INFO L226 Difference]: Without dead ends: 3550 [2022-11-26 01:08:39,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:08:39,424 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1451 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:39,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-26 01:08:39,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2022-11-26 01:08:39,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 3550. [2022-11-26 01:08:39,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 2073 states have (on average 1.281717317896768) internal successors, (2657), 2135 states have internal predecessors, (2657), 1209 states have call successors, (1209), 270 states have call predecessors, (1209), 265 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-11-26 01:08:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 5071 transitions. [2022-11-26 01:08:39,816 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 5071 transitions. Word has length 218 [2022-11-26 01:08:39,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:39,817 INFO L495 AbstractCegarLoop]: Abstraction has 3550 states and 5071 transitions. [2022-11-26 01:08:39,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-26 01:08:39,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 5071 transitions. [2022-11-26 01:08:39,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-26 01:08:39,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:39,822 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 9, 8, 8, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:08:39,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-26 01:08:39,823 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:08:39,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:39,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1847999300, now seen corresponding path program 1 times [2022-11-26 01:08:39,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:39,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293826163] [2022-11-26 01:08:39,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:39,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2022-11-26 01:08:40,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:40,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293826163] [2022-11-26 01:08:40,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293826163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:40,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:40,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 01:08:40,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821622221] [2022-11-26 01:08:40,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:40,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 01:08:40,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:40,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 01:08:40,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:08:40,503 INFO L87 Difference]: Start difference. First operand 3550 states and 5071 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-26 01:08:42,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:42,648 INFO L93 Difference]: Finished difference Result 3556 states and 5076 transitions. [2022-11-26 01:08:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:08:42,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 226 [2022-11-26 01:08:42,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:42,664 INFO L225 Difference]: With dead ends: 3556 [2022-11-26 01:08:42,664 INFO L226 Difference]: Without dead ends: 3554 [2022-11-26 01:08:42,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:08:42,667 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:42,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-26 01:08:42,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2022-11-26 01:08:43,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 3554. [2022-11-26 01:08:43,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 2076 states have (on average 1.28131021194605) internal successors, (2660), 2138 states have internal predecessors, (2660), 1209 states have call successors, (1209), 271 states have call predecessors, (1209), 266 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-11-26 01:08:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 5074 transitions. [2022-11-26 01:08:43,147 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 5074 transitions. Word has length 226 [2022-11-26 01:08:43,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:43,147 INFO L495 AbstractCegarLoop]: Abstraction has 3554 states and 5074 transitions. [2022-11-26 01:08:43,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-26 01:08:43,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 5074 transitions. [2022-11-26 01:08:43,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-26 01:08:43,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:43,153 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 10, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:08:43,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-26 01:08:43,153 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:08:43,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:43,154 INFO L85 PathProgramCache]: Analyzing trace with hash -291766451, now seen corresponding path program 1 times [2022-11-26 01:08:43,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:43,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618905496] [2022-11-26 01:08:43,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:43,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:43,781 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2022-11-26 01:08:43,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:43,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618905496] [2022-11-26 01:08:43,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618905496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:43,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:43,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 01:08:43,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242099998] [2022-11-26 01:08:43,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:43,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 01:08:43,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:43,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 01:08:43,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:08:43,784 INFO L87 Difference]: Start difference. First operand 3554 states and 5074 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-26 01:08:46,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:46,929 INFO L93 Difference]: Finished difference Result 3560 states and 5079 transitions. [2022-11-26 01:08:46,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:08:46,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (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 228 [2022-11-26 01:08:46,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:46,943 INFO L225 Difference]: With dead ends: 3560 [2022-11-26 01:08:46,944 INFO L226 Difference]: Without dead ends: 3558 [2022-11-26 01:08:46,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:08:46,946 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1451 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:46,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-26 01:08:46,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2022-11-26 01:08:47,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 3558. [2022-11-26 01:08:47,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 2079 states have (on average 1.280904280904281) internal successors, (2663), 2141 states have internal predecessors, (2663), 1209 states have call successors, (1209), 272 states have call predecessors, (1209), 267 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-11-26 01:08:47,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 5077 transitions. [2022-11-26 01:08:47,394 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 5077 transitions. Word has length 228 [2022-11-26 01:08:47,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:47,395 INFO L495 AbstractCegarLoop]: Abstraction has 3558 states and 5077 transitions. [2022-11-26 01:08:47,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-26 01:08:47,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 5077 transitions. [2022-11-26 01:08:47,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-26 01:08:47,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:47,400 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 11, 10, 10, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:08:47,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-26 01:08:47,401 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:08:47,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:47,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1085767364, now seen corresponding path program 1 times [2022-11-26 01:08:47,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:47,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809512063] [2022-11-26 01:08:47,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:47,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2022-11-26 01:08:48,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:48,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809512063] [2022-11-26 01:08:48,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809512063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:48,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:48,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 01:08:48,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818834156] [2022-11-26 01:08:48,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:48,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 01:08:48,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:48,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 01:08:48,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:08:48,010 INFO L87 Difference]: Start difference. First operand 3558 states and 5077 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-26 01:08:50,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:50,663 INFO L93 Difference]: Finished difference Result 3564 states and 5082 transitions. [2022-11-26 01:08:50,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:08:50,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 236 [2022-11-26 01:08:50,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:50,680 INFO L225 Difference]: With dead ends: 3564 [2022-11-26 01:08:50,681 INFO L226 Difference]: Without dead ends: 3560 [2022-11-26 01:08:50,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:08:50,684 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 1450 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:50,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 3902 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-26 01:08:50,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2022-11-26 01:08:51,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 3560. [2022-11-26 01:08:51,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 2081 states have (on average 1.280153772224892) internal successors, (2664), 2142 states have internal predecessors, (2664), 1209 states have call successors, (1209), 273 states have call predecessors, (1209), 267 states have return successors, (1205), 1186 states have call predecessors, (1205), 1205 states have call successors, (1205) [2022-11-26 01:08:51,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 5078 transitions. [2022-11-26 01:08:51,117 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 5078 transitions. Word has length 236 [2022-11-26 01:08:51,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:51,118 INFO L495 AbstractCegarLoop]: Abstraction has 3560 states and 5078 transitions. [2022-11-26 01:08:51,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-26 01:08:51,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 5078 transitions. [2022-11-26 01:08:51,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-26 01:08:51,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:51,123 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 12, 11, 11, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:08:51,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-26 01:08:51,124 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:08:51,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:51,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1105026390, now seen corresponding path program 1 times [2022-11-26 01:08:51,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:51,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470997295] [2022-11-26 01:08:51,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:51,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:51,780 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2022-11-26 01:08:51,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:51,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470997295] [2022-11-26 01:08:51,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470997295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:51,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:51,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 01:08:51,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371399422] [2022-11-26 01:08:51,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:51,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 01:08:51,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:51,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 01:08:51,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:08:51,786 INFO L87 Difference]: Start difference. First operand 3560 states and 5078 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-26 01:08:54,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:54,382 INFO L93 Difference]: Finished difference Result 3560 states and 5078 transitions. [2022-11-26 01:08:54,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:08:54,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 241 [2022-11-26 01:08:54,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:54,398 INFO L225 Difference]: With dead ends: 3560 [2022-11-26 01:08:54,398 INFO L226 Difference]: Without dead ends: 3479 [2022-11-26 01:08:54,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:08:54,402 INFO L413 NwaCegarLoop]: 1305 mSDtfsCounter, 1446 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:54,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 3899 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-26 01:08:54,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2022-11-26 01:08:54,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3479. [2022-11-26 01:08:54,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 2041 states have (on average 1.282704556589907) internal successors, (2618), 2096 states have internal predecessors, (2618), 1182 states have call successors, (1182), 258 states have call predecessors, (1182), 254 states have return successors, (1182), 1166 states have call predecessors, (1182), 1182 states have call successors, (1182) [2022-11-26 01:08:54,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 4982 transitions. [2022-11-26 01:08:54,940 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 4982 transitions. Word has length 241 [2022-11-26 01:08:54,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:54,941 INFO L495 AbstractCegarLoop]: Abstraction has 3479 states and 4982 transitions. [2022-11-26 01:08:54,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-26 01:08:54,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 4982 transitions. [2022-11-26 01:08:54,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-26 01:08:54,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:54,947 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 12, 12, 12, 12, 12, 12, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:08:54,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-26 01:08:54,947 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:08:54,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:54,948 INFO L85 PathProgramCache]: Analyzing trace with hash -330424869, now seen corresponding path program 1 times [2022-11-26 01:08:54,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:54,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756927161] [2022-11-26 01:08:54,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:54,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:55,384 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2022-11-26 01:08:55,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:55,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756927161] [2022-11-26 01:08:55,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756927161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:55,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:55,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:08:55,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054105538] [2022-11-26 01:08:55,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:55,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:08:55,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:55,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:08:55,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:08:55,388 INFO L87 Difference]: Start difference. First operand 3479 states and 4982 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-26 01:08:58,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:58,028 INFO L93 Difference]: Finished difference Result 5949 states and 8505 transitions. [2022-11-26 01:08:58,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:08:58,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 247 [2022-11-26 01:08:58,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:58,039 INFO L225 Difference]: With dead ends: 5949 [2022-11-26 01:08:58,039 INFO L226 Difference]: Without dead ends: 2513 [2022-11-26 01:08:58,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:08:58,052 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 716 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:58,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 2919 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-26 01:08:58,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2022-11-26 01:08:58,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2507. [2022-11-26 01:08:58,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 1501 states have (on average 1.2698201199200534) internal successors, (1906), 1538 states have internal predecessors, (1906), 815 states have call successors, (815), 191 states have call predecessors, (815), 189 states have return successors, (815), 804 states have call predecessors, (815), 815 states have call successors, (815) [2022-11-26 01:08:58,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3536 transitions. [2022-11-26 01:08:58,420 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3536 transitions. Word has length 247 [2022-11-26 01:08:58,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:58,420 INFO L495 AbstractCegarLoop]: Abstraction has 2507 states and 3536 transitions. [2022-11-26 01:08:58,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-26 01:08:58,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3536 transitions. [2022-11-26 01:08:58,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-26 01:08:58,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:58,425 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 12, 12, 12, 12, 12, 12, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:08:58,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-26 01:08:58,426 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:08:58,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:58,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1220741242, now seen corresponding path program 1 times [2022-11-26 01:08:58,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:58,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330983442] [2022-11-26 01:08:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:58,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-11-26 01:08:58,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:58,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330983442] [2022-11-26 01:08:58,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330983442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:58,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:58,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:08:58,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382829127] [2022-11-26 01:08:58,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:58,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:08:58,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:58,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:08:58,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:08:58,845 INFO L87 Difference]: Start difference. First operand 2507 states and 3536 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-26 01:09:01,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:09:01,090 INFO L93 Difference]: Finished difference Result 5577 states and 7886 transitions. [2022-11-26 01:09:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:09:01,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 294 [2022-11-26 01:09:01,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:09:01,102 INFO L225 Difference]: With dead ends: 5577 [2022-11-26 01:09:01,102 INFO L226 Difference]: Without dead ends: 3172 [2022-11-26 01:09:01,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:09:01,110 INFO L413 NwaCegarLoop]: 1854 mSDtfsCounter, 724 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-26 01:09:01,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 3081 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-26 01:09:01,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2022-11-26 01:09:01,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 3166. [2022-11-26 01:09:01,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3166 states, 1899 states have (on average 1.2669826224328593) internal successors, (2406), 1945 states have internal predecessors, (2406), 1020 states have call successors, (1020), 247 states have call predecessors, (1020), 245 states have return successors, (1020), 1006 states have call predecessors, (1020), 1020 states have call successors, (1020) [2022-11-26 01:09:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3166 states to 3166 states and 4446 transitions. [2022-11-26 01:09:01,527 INFO L78 Accepts]: Start accepts. Automaton has 3166 states and 4446 transitions. Word has length 294 [2022-11-26 01:09:01,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:09:01,527 INFO L495 AbstractCegarLoop]: Abstraction has 3166 states and 4446 transitions. [2022-11-26 01:09:01,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-26 01:09:01,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3166 states and 4446 transitions. [2022-11-26 01:09:01,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-26 01:09:01,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:09:01,533 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 12, 12, 12, 12, 12, 12, 7, 7, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:09:01,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-26 01:09:01,533 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:09:01,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:09:01,534 INFO L85 PathProgramCache]: Analyzing trace with hash -781891628, now seen corresponding path program 1 times [2022-11-26 01:09:01,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:09:01,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572813636] [2022-11-26 01:09:01,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:09:01,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:09:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:09:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2022-11-26 01:09:02,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:09:02,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572813636] [2022-11-26 01:09:02,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572813636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:09:02,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:09:02,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:09:02,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728241603] [2022-11-26 01:09:02,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:09:02,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:09:02,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:09:02,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:09:02,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:09:02,023 INFO L87 Difference]: Start difference. First operand 3166 states and 4446 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-26 01:09:04,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:09:04,067 INFO L93 Difference]: Finished difference Result 6242 states and 8809 transitions. [2022-11-26 01:09:04,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:09:04,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 338 [2022-11-26 01:09:04,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:09:04,081 INFO L225 Difference]: With dead ends: 6242 [2022-11-26 01:09:04,081 INFO L226 Difference]: Without dead ends: 3178 [2022-11-26 01:09:04,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:09:04,090 INFO L413 NwaCegarLoop]: 1261 mSDtfsCounter, 1 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-26 01:09:04,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2517 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-26 01:09:04,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2022-11-26 01:09:04,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 3170. [2022-11-26 01:09:04,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3170 states, 1903 states have (on average 1.2664214398318445) internal successors, (2410), 1949 states have internal predecessors, (2410), 1020 states have call successors, (1020), 247 states have call predecessors, (1020), 245 states have return successors, (1020), 1006 states have call predecessors, (1020), 1020 states have call successors, (1020) [2022-11-26 01:09:04,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 4450 transitions. [2022-11-26 01:09:04,514 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 4450 transitions. Word has length 338 [2022-11-26 01:09:04,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:09:04,515 INFO L495 AbstractCegarLoop]: Abstraction has 3170 states and 4450 transitions. [2022-11-26 01:09:04,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-26 01:09:04,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 4450 transitions. [2022-11-26 01:09:04,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-11-26 01:09:04,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:09:04,523 INFO L195 NwaCegarLoop]: trace histogram [18, 15, 12, 12, 12, 12, 12, 12, 7, 7, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:09:04,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-26 01:09:04,524 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-26 01:09:04,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:09:04,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1692106582, now seen corresponding path program 1 times [2022-11-26 01:09:04,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:09:04,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564542451] [2022-11-26 01:09:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:09:04,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:09:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:09:05,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2022-11-26 01:09:05,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:09:05,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564542451] [2022-11-26 01:09:05,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564542451] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:09:05,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141889790] [2022-11-26 01:09:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:09:05,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:09:05,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:09:05,127 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:09:05,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d24d9a7d-6dd9-4d77-a462-cb713e54c112/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 01:09:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:09:06,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 4608 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:09:06,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:09:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 106 proven. 1 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2022-11-26 01:09:06,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:09:06,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2022-11-26 01:09:06,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141889790] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:09:06,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1187572253] [2022-11-26 01:09:06,954 INFO L159 IcfgInterpreter]: Started Sifa with 176 locations of interest [2022-11-26 01:09:06,954 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:09:06,958 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:09:06,964 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:09:06,965 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:09:22,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-26 01:09:23,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-26 01:09:26,040 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