./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-packetengines-hamachi.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 141cc550f279b59aa80e553b6a405c5654c50ab0a30e94ad7616006c63d0c81e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 03:10:40,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 03:10:40,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 03:10:40,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 03:10:40,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 03:10:40,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 03:10:40,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 03:10:40,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 03:10:40,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 03:10:40,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 03:10:40,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 03:10:40,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 03:10:40,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 03:10:40,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 03:10:40,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 03:10:40,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 03:10:40,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 03:10:40,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 03:10:40,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 03:10:40,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 03:10:40,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 03:10:40,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 03:10:40,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 03:10:40,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 03:10:40,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 03:10:40,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 03:10:40,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 03:10:40,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 03:10:40,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 03:10:40,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 03:10:40,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 03:10:40,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 03:10:40,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 03:10:40,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 03:10:40,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 03:10:40,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 03:10:40,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 03:10:40,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 03:10:40,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 03:10:40,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 03:10:40,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 03:10:40,055 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 03:10:40,069 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 03:10:40,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 03:10:40,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 03:10:40,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 03:10:40,070 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 03:10:40,070 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 03:10:40,070 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 03:10:40,071 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 03:10:40,071 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 03:10:40,071 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 03:10:40,071 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 03:10:40,071 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 03:10:40,071 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 03:10:40,071 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 03:10:40,071 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 03:10:40,072 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 03:10:40,072 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 03:10:40,072 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 03:10:40,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 03:10:40,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 03:10:40,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 03:10:40,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 03:10:40,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 03:10:40,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 03:10:40,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 03:10:40,073 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 03:10:40,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 03:10:40,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 03:10:40,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 03:10:40,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:10:40,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 03:10:40,074 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 03:10:40,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 03:10:40,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 03:10:40,074 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 03:10:40,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 03:10:40,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 03:10:40,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 03:10:40,074 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_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 141cc550f279b59aa80e553b6a405c5654c50ab0a30e94ad7616006c63d0c81e [2022-12-14 03:10:40,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 03:10:40,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 03:10:40,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 03:10:40,286 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 03:10:40,286 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 03:10:40,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i [2022-12-14 03:10:42,907 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 03:10:43,277 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 03:10:43,277 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i [2022-12-14 03:10:43,301 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh/data/c1098f665/e8d453e7b972435fbfc62e28d89220e8/FLAG6b15d5eb5 [2022-12-14 03:10:43,312 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh/data/c1098f665/e8d453e7b972435fbfc62e28d89220e8 [2022-12-14 03:10:43,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 03:10:43,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 03:10:43,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 03:10:43,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 03:10:43,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 03:10:43,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:10:43" (1/1) ... [2022-12-14 03:10:43,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a91d5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:43, skipping insertion in model container [2022-12-14 03:10:43,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:10:43" (1/1) ... [2022-12-14 03:10:43,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 03:10:43,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 03:10:43,997 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-12-14 03:10:44,009 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irq [2022-12-14 03:10:44,021 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-12-14 03:10:44,033 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irq [2022-12-14 03:10:44,110 WARN L623 FunctionHandler]: Unknown extern function ioremap_nocache [2022-12-14 03:10:44,164 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-14 03:10:44,168 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-14 03:10:44,168 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-12-14 03:10:44,173 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-12-14 03:10:44,178 WARN L623 FunctionHandler]: Unknown extern function debug_dma_sync_single_for_cpu [2022-12-14 03:10:44,183 WARN L623 FunctionHandler]: Unknown extern function debug_dma_sync_single_for_device [2022-12-14 03:10:44,197 WARN L623 FunctionHandler]: Unknown extern function debug_dma_alloc_coherent [2022-12-14 03:10:44,201 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 03:10:44,203 WARN L623 FunctionHandler]: Unknown extern function debug_dma_free_coherent [2022-12-14 03:10:44,219 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-12-14 03:10:44,222 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-12-14 03:10:44,258 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-14 03:10:44,258 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-14 03:10:44,265 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 03:10:44,265 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,278 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_irq [2022-12-14 03:10:44,341 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-12-14 03:10:44,423 WARN L623 FunctionHandler]: Unknown extern function pci_enable_device [2022-12-14 03:10:44,424 WARN L623 FunctionHandler]: Unknown extern function pci_set_master [2022-12-14 03:10:44,424 WARN L623 FunctionHandler]: Unknown extern function pci_request_regions [2022-12-14 03:10:44,428 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 03:10:44,442 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 03:10:44,442 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 03:10:44,449 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,451 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,453 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,455 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-12-14 03:10:44,456 WARN L623 FunctionHandler]: Unknown extern function pci_release_regions [2022-12-14 03:10:44,458 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,465 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,467 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,468 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,468 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,470 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,470 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-14 03:10:44,471 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 03:10:44,473 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 03:10:44,475 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,476 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,477 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 03:10:44,478 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,478 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,479 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,479 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,480 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,480 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,481 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,483 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 03:10:44,483 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 03:10:44,485 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 03:10:44,491 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,494 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,496 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,499 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,499 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,501 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,503 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,503 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,504 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,504 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,505 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,507 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,508 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 03:10:44,509 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 03:10:44,510 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 03:10:44,510 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-12-14 03:10:44,513 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-14 03:10:44,517 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,518 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,520 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,521 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,522 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 03:10:44,523 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 03:10:44,535 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 03:10:44,535 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 03:10:44,536 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 03:10:44,539 WARN L623 FunctionHandler]: Unknown extern function mii_ethtool_gset [2022-12-14 03:10:44,543 WARN L623 FunctionHandler]: Unknown extern function mii_ethtool_sset [2022-12-14 03:10:44,547 WARN L623 FunctionHandler]: Unknown extern function mii_nway_restart [2022-12-14 03:10:44,551 WARN L623 FunctionHandler]: Unknown extern function mii_link_ok [2022-12-14 03:10:44,552 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-14 03:10:44,553 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,554 WARN L623 FunctionHandler]: Unknown extern function generic_mii_ioctl [2022-12-14 03:10:44,559 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-12-14 03:10:44,559 WARN L623 FunctionHandler]: Unknown extern function pci_release_regions [2022-12-14 03:10:44,563 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:44,794 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-14 03:10:44,795 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-14 03:10:44,796 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-14 03:10:44,800 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 03:10:44,803 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 03:10:44,804 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 03:10:44,814 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-12-14 03:10:44,816 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-12-14 03:10:44,825 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 03:10:44,826 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 03:10:44,828 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-12-14 03:10:44,828 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-12-14 03:10:44,829 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 03:10:44,830 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-14 03:10:44,831 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-12-14 03:10:44,831 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 03:10:44,832 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 03:10:44,832 WARN L623 FunctionHandler]: Unknown extern function __pci_register_driver [2022-12-14 03:10:44,833 WARN L623 FunctionHandler]: Unknown extern function pci_unregister_driver [2022-12-14 03:10:44,879 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-14 03:10:44,880 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-14 03:10:44,888 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-14 03:10:45,297 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_3c019ee0-b270-4724-99df-7970441ff2c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[322818,322831] [2022-12-14 03:10:45,300 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_3c019ee0-b270-4724-99df-7970441ff2c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[322987,323000] [2022-12-14 03:10:45,300 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_3c019ee0-b270-4724-99df-7970441ff2c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[323154,323167] [2022-12-14 03:10:45,301 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_3c019ee0-b270-4724-99df-7970441ff2c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[323322,323335] [2022-12-14 03:10:45,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:10:45,349 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 03:10:45,417 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-12-14 03:10:45,418 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irq [2022-12-14 03:10:45,418 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-12-14 03:10:45,418 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irq [2022-12-14 03:10:45,419 WARN L623 FunctionHandler]: Unknown extern function ioremap_nocache [2022-12-14 03:10:45,423 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-14 03:10:45,423 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-14 03:10:45,423 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-12-14 03:10:45,425 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-12-14 03:10:45,425 WARN L623 FunctionHandler]: Unknown extern function debug_dma_sync_single_for_cpu [2022-12-14 03:10:45,426 WARN L623 FunctionHandler]: Unknown extern function debug_dma_sync_single_for_device [2022-12-14 03:10:45,428 WARN L623 FunctionHandler]: Unknown extern function debug_dma_alloc_coherent [2022-12-14 03:10:45,429 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 03:10:45,429 WARN L623 FunctionHandler]: Unknown extern function debug_dma_free_coherent [2022-12-14 03:10:45,430 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-12-14 03:10:45,430 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-12-14 03:10:45,432 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-14 03:10:45,432 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-14 03:10:45,433 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 03:10:45,433 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,434 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_irq [2022-12-14 03:10:45,436 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-12-14 03:10:45,439 WARN L623 FunctionHandler]: Unknown extern function pci_enable_device [2022-12-14 03:10:45,440 WARN L623 FunctionHandler]: Unknown extern function pci_set_master [2022-12-14 03:10:45,440 WARN L623 FunctionHandler]: Unknown extern function pci_request_regions [2022-12-14 03:10:45,442 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 03:10:45,444 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 03:10:45,444 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 03:10:45,447 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,447 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,448 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,449 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-12-14 03:10:45,449 WARN L623 FunctionHandler]: Unknown extern function pci_release_regions [2022-12-14 03:10:45,451 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,466 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,468 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,468 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,469 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,469 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,470 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-14 03:10:45,470 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 03:10:45,472 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 03:10:45,474 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,475 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,475 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-12-14 03:10:45,476 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,477 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,477 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,478 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,478 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,478 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,479 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,481 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 03:10:45,481 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 03:10:45,482 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 03:10:45,488 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,490 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,491 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,494 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,495 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,496 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,497 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,498 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,498 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,499 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,500 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,501 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,502 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 03:10:45,503 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 03:10:45,504 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 03:10:45,504 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-12-14 03:10:45,507 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-14 03:10:45,509 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,510 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,511 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,511 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,512 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 03:10:45,513 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 03:10:45,516 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 03:10:45,517 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 03:10:45,517 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 03:10:45,517 WARN L623 FunctionHandler]: Unknown extern function mii_ethtool_gset [2022-12-14 03:10:45,518 WARN L623 FunctionHandler]: Unknown extern function mii_ethtool_sset [2022-12-14 03:10:45,518 WARN L623 FunctionHandler]: Unknown extern function mii_nway_restart [2022-12-14 03:10:45,518 WARN L623 FunctionHandler]: Unknown extern function mii_link_ok [2022-12-14 03:10:45,519 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-14 03:10:45,520 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,520 WARN L623 FunctionHandler]: Unknown extern function generic_mii_ioctl [2022-12-14 03:10:45,521 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-12-14 03:10:45,521 WARN L623 FunctionHandler]: Unknown extern function pci_release_regions [2022-12-14 03:10:45,521 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 03:10:45,526 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-14 03:10:45,526 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-14 03:10:45,526 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-14 03:10:45,528 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 03:10:45,530 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 03:10:45,530 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 03:10:45,534 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-12-14 03:10:45,535 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-12-14 03:10:45,541 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 03:10:45,541 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 03:10:45,544 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-12-14 03:10:45,544 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-12-14 03:10:45,545 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 03:10:45,545 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-14 03:10:45,546 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-12-14 03:10:45,546 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 03:10:45,546 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 03:10:45,546 WARN L623 FunctionHandler]: Unknown extern function __pci_register_driver [2022-12-14 03:10:45,547 WARN L623 FunctionHandler]: Unknown extern function pci_unregister_driver [2022-12-14 03:10:45,549 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-14 03:10:45,549 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-14 03:10:45,549 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-14 03:10:45,563 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_3c019ee0-b270-4724-99df-7970441ff2c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[322818,322831] [2022-12-14 03:10:45,563 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_3c019ee0-b270-4724-99df-7970441ff2c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[322987,323000] [2022-12-14 03:10:45,563 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_3c019ee0-b270-4724-99df-7970441ff2c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[323154,323167] [2022-12-14 03:10:45,564 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_3c019ee0-b270-4724-99df-7970441ff2c3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i[323322,323335] [2022-12-14 03:10:45,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:10:45,688 INFO L208 MainTranslator]: Completed translation [2022-12-14 03:10:45,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:45 WrapperNode [2022-12-14 03:10:45,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 03:10:45,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 03:10:45,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 03:10:45,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 03:10:45,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:45" (1/1) ... [2022-12-14 03:10:45,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:45" (1/1) ... [2022-12-14 03:10:45,828 INFO L138 Inliner]: procedures = 412, calls = 1858, calls flagged for inlining = 207, calls inlined = 191, statements flattened = 4675 [2022-12-14 03:10:45,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 03:10:45,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 03:10:45,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 03:10:45,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 03:10:45,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:45" (1/1) ... [2022-12-14 03:10:45,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:45" (1/1) ... [2022-12-14 03:10:45,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:45" (1/1) ... [2022-12-14 03:10:45,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:45" (1/1) ... [2022-12-14 03:10:45,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:45" (1/1) ... [2022-12-14 03:10:45,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:45" (1/1) ... [2022-12-14 03:10:45,965 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:45" (1/1) ... [2022-12-14 03:10:45,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:45" (1/1) ... [2022-12-14 03:10:46,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 03:10:46,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 03:10:46,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 03:10:46,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 03:10:46,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:45" (1/1) ... [2022-12-14 03:10:46,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:10:46,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:10:46,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 03:10:46,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 03:10:46,058 INFO L130 BoogieDeclarations]: Found specification of procedure check_if_running [2022-12-14 03:10:46,058 INFO L138 BoogieDeclarations]: Found implementation of procedure check_if_running [2022-12-14 03:10:46,058 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-12-14 03:10:46,058 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-12-14 03:10:46,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-12-14 03:10:46,058 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-12-14 03:10:46,059 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-12-14 03:10:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-12-14 03:10:46,059 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-12-14 03:10:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-12-14 03:10:46,059 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_close [2022-12-14 03:10:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_close [2022-12-14 03:10:46,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-14 03:10:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-14 03:10:46,059 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2022-12-14 03:10:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2022-12-14 03:10:46,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-12-14 03:10:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-12-14 03:10:46,059 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-12-14 03:10:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-12-14 03:10:46,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_hamachi_private [2022-12-14 03:10:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_hamachi_private [2022-12-14 03:10:46,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-12-14 03:10:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-12-14 03:10:46,059 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-12-14 03:10:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-12-14 03:10:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-12-14 03:10:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-12-14 03:10:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-12-14 03:10:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-12-14 03:10:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-12-14 03:10:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-12-14 03:10:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 03:10:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-12-14 03:10:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-12-14 03:10:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-12-14 03:10:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-12-14 03:10:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-14 03:10:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-12-14 03:10:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-12-14 03:10:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 03:10:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-12-14 03:10:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-12-14 03:10:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 03:10:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-12-14 03:10:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-12-14 03:10:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-12-14 03:10:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-12-14 03:10:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-12-14 03:10:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-12-14 03:10:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-12-14 03:10:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-12-14 03:10:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-12-14 03:10:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-12-14 03:10:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-12-14 03:10:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-12-14 03:10:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-12-14 03:10:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-12-14 03:10:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-12-14 03:10:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-12-14 03:10:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 03:10:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-12-14 03:10:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-12-14 03:10:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-12-14 03:10:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-12-14 03:10:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-12-14 03:10:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-12-14 03:10:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 03:10:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-12-14 03:10:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-12-14 03:10:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-12-14 03:10:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-12-14 03:10:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 03:10:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-12-14 03:10:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-12-14 03:10:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-12-14 03:10:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-12-14 03:10:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_hamachi_private [2022-12-14 03:10:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_hamachi_private [2022-12-14 03:10:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-12-14 03:10:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-12-14 03:10:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-12-14 03:10:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-12-14 03:10:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-12-14 03:10:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-12-14 03:10:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-12-14 03:10:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-12-14 03:10:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-12-14 03:10:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-12-14 03:10:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-12-14 03:10:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-12-14 03:10:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2022-12-14 03:10:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2022-12-14 03:10:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_nway_reset [2022-12-14 03:10:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_nway_reset [2022-12-14 03:10:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-12-14 03:10:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-12-14 03:10:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 03:10:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 03:10:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-14 03:10:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-14 03:10:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-12-14 03:10:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-12-14 03:10:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-12-14 03:10:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-12-14 03:10:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_hamachi_exit_15_2 [2022-12-14 03:10:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_hamachi_exit_15_2 [2022-12-14 03:10:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-12-14 03:10:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-12-14 03:10:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-12-14 03:10:46,064 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-12-14 03:10:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_open [2022-12-14 03:10:46,064 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_open [2022-12-14 03:10:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-12-14 03:10:46,064 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-12-14 03:10:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-12-14 03:10:46,064 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-12-14 03:10:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-12-14 03:10:46,064 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-12-14 03:10:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 03:10:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-12-14 03:10:46,064 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-12-14 03:10:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 03:10:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-12-14 03:10:46,064 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-12-14 03:10:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 03:10:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-12-14 03:10:46,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-12-14 03:10:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-12-14 03:10:46,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-12-14 03:10:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-12-14 03:10:46,064 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-12-14 03:10:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_68 [2022-12-14 03:10:46,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_68 [2022-12-14 03:10:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-12-14 03:10:46,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-12-14 03:10:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-12-14 03:10:46,065 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-12-14 03:10:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-12-14 03:10:46,065 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-12-14 03:10:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-12-14 03:10:46,065 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-12-14 03:10:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_remove_one [2022-12-14 03:10:46,065 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_remove_one [2022-12-14 03:10:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 03:10:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-14 03:10:46,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-14 03:10:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_69 [2022-12-14 03:10:46,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_69 [2022-12-14 03:10:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_get_stats [2022-12-14 03:10:46,065 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_get_stats [2022-12-14 03:10:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_tx_timeout [2022-12-14 03:10:46,065 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_tx_timeout [2022-12-14 03:10:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-12-14 03:10:46,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-12-14 03:10:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2022-12-14 03:10:46,066 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2022-12-14 03:10:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-12-14 03:10:46,066 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-12-14 03:10:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 03:10:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_timer [2022-12-14 03:10:46,066 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_timer [2022-12-14 03:10:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-12-14 03:10:46,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-12-14 03:10:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-12-14 03:10:46,066 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-12-14 03:10:46,592 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 03:10:46,594 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 03:10:46,735 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-12-14 03:10:48,928 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-12-14 03:10:48,974 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 03:10:49,916 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 03:10:49,916 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 03:10:49,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:10:49 BoogieIcfgContainer [2022-12-14 03:10:49,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 03:10:49,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 03:10:49,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 03:10:49,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 03:10:49,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:10:43" (1/3) ... [2022-12-14 03:10:49,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e1ca01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:10:49, skipping insertion in model container [2022-12-14 03:10:49,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:45" (2/3) ... [2022-12-14 03:10:49,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e1ca01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:10:49, skipping insertion in model container [2022-12-14 03:10:49,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:10:49" (3/3) ... [2022-12-14 03:10:49,925 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-packetengines-hamachi.cil.i [2022-12-14 03:10:49,939 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 03:10:49,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-14 03:10:49,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 03:10:49,996 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;@31dd66de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 03:10:49,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-14 03:10:50,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 1131 states, 657 states have (on average 1.3287671232876712) internal successors, (873), 684 states have internal predecessors, (873), 397 states have call successors, (397), 75 states have call predecessors, (397), 74 states have return successors, (390), 377 states have call predecessors, (390), 390 states have call successors, (390) [2022-12-14 03:10:50,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-14 03:10:50,031 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:10:50,031 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 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] [2022-12-14 03:10:50,032 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:10:50,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:10:50,036 INFO L85 PathProgramCache]: Analyzing trace with hash -431766477, now seen corresponding path program 1 times [2022-12-14 03:10:50,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:10:50,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079210002] [2022-12-14 03:10:50,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:10:50,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:10:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:10:50,523 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-12-14 03:10:50,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:10:50,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079210002] [2022-12-14 03:10:50,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079210002] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:10:50,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:10:50,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:10:50,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218573649] [2022-12-14 03:10:50,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:10:50,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:10:50,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:10:50,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:10:50,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:10:50,557 INFO L87 Difference]: Start difference. First operand has 1131 states, 657 states have (on average 1.3287671232876712) internal successors, (873), 684 states have internal predecessors, (873), 397 states have call successors, (397), 75 states have call predecessors, (397), 74 states have return successors, (390), 377 states have call predecessors, (390), 390 states have call successors, (390) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-14 03:10:53,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:10:53,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:10:53,890 INFO L93 Difference]: Finished difference Result 3213 states and 4751 transitions. [2022-12-14 03:10:53,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:10:53,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2022-12-14 03:10:53,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:10:53,913 INFO L225 Difference]: With dead ends: 3213 [2022-12-14 03:10:53,913 INFO L226 Difference]: Without dead ends: 2090 [2022-12-14 03:10:53,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:10:53,922 INFO L413 NwaCegarLoop]: 1734 mSDtfsCounter, 1439 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:10:53,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 3105 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 508 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-12-14 03:10:53,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2022-12-14 03:10:54,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2085. [2022-12-14 03:10:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 1228 states have (on average 1.3200325732899023) internal successors, (1621), 1280 states have internal predecessors, (1621), 711 states have call successors, (711), 144 states have call predecessors, (711), 143 states have return successors, (707), 681 states have call predecessors, (707), 707 states have call successors, (707) [2022-12-14 03:10:54,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3039 transitions. [2022-12-14 03:10:54,081 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3039 transitions. Word has length 115 [2022-12-14 03:10:54,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:10:54,081 INFO L495 AbstractCegarLoop]: Abstraction has 2085 states and 3039 transitions. [2022-12-14 03:10:54,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-14 03:10:54,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3039 transitions. [2022-12-14 03:10:54,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-14 03:10:54,085 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:10:54,085 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:10:54,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 03:10:54,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:10:54,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:10:54,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1748897901, now seen corresponding path program 1 times [2022-12-14 03:10:54,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:10:54,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255642253] [2022-12-14 03:10:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:10:54,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:10:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:10:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-12-14 03:10:54,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:10:54,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255642253] [2022-12-14 03:10:54,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255642253] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:10:54,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:10:54,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:10:54,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968350703] [2022-12-14 03:10:54,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:10:54,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:10:54,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:10:54,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:10:54,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:10:54,307 INFO L87 Difference]: Start difference. First operand 2085 states and 3039 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 03:10:57,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:10:57,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:10:57,564 INFO L93 Difference]: Finished difference Result 5802 states and 8445 transitions. [2022-12-14 03:10:57,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:10:57,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-12-14 03:10:57,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:10:57,590 INFO L225 Difference]: With dead ends: 5802 [2022-12-14 03:10:57,590 INFO L226 Difference]: Without dead ends: 3736 [2022-12-14 03:10:57,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:10:57,601 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 1277 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:10:57,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 3095 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 490 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 03:10:57,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2022-12-14 03:10:57,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3706. [2022-12-14 03:10:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 2177 states have (on average 1.3201653651814425) internal successors, (2874), 2274 states have internal predecessors, (2874), 1252 states have call successors, (1252), 277 states have call predecessors, (1252), 274 states have return successors, (1264), 1189 states have call predecessors, (1264), 1248 states have call successors, (1264) [2022-12-14 03:10:57,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 5390 transitions. [2022-12-14 03:10:57,801 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 5390 transitions. Word has length 113 [2022-12-14 03:10:57,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:10:57,801 INFO L495 AbstractCegarLoop]: Abstraction has 3706 states and 5390 transitions. [2022-12-14 03:10:57,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 03:10:57,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 5390 transitions. [2022-12-14 03:10:57,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-14 03:10:57,806 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:10:57,806 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:10:57,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 03:10:57,806 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:10:57,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:10:57,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1249165815, now seen corresponding path program 1 times [2022-12-14 03:10:57,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:10:57,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234236835] [2022-12-14 03:10:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:10:57,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:10:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:10:58,030 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-12-14 03:10:58,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:10:58,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234236835] [2022-12-14 03:10:58,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234236835] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:10:58,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:10:58,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:10:58,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878734464] [2022-12-14 03:10:58,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:10:58,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:10:58,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:10:58,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:10:58,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:10:58,032 INFO L87 Difference]: Start difference. First operand 3706 states and 5390 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-14 03:11:00,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:11:01,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:01,141 INFO L93 Difference]: Finished difference Result 8656 states and 12545 transitions. [2022-12-14 03:11:01,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:11:01,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2022-12-14 03:11:01,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:01,161 INFO L225 Difference]: With dead ends: 8656 [2022-12-14 03:11:01,161 INFO L226 Difference]: Without dead ends: 4969 [2022-12-14 03:11:01,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:11:01,173 INFO L413 NwaCegarLoop]: 1705 mSDtfsCounter, 1284 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:01,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 3058 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 515 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 03:11:01,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4969 states. [2022-12-14 03:11:01,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4969 to 4942. [2022-12-14 03:11:01,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4942 states, 2868 states have (on average 1.3057880055788005) internal successors, (3745), 3007 states have internal predecessors, (3745), 1680 states have call successors, (1680), 395 states have call predecessors, (1680), 391 states have return successors, (1703), 1586 states have call predecessors, (1703), 1676 states have call successors, (1703) [2022-12-14 03:11:01,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4942 states to 4942 states and 7128 transitions. [2022-12-14 03:11:01,357 INFO L78 Accepts]: Start accepts. Automaton has 4942 states and 7128 transitions. Word has length 117 [2022-12-14 03:11:01,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:01,358 INFO L495 AbstractCegarLoop]: Abstraction has 4942 states and 7128 transitions. [2022-12-14 03:11:01,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-14 03:11:01,358 INFO L276 IsEmpty]: Start isEmpty. Operand 4942 states and 7128 transitions. [2022-12-14 03:11:01,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-14 03:11:01,361 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:01,361 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2022-12-14 03:11:01,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 03:11:01,362 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:11:01,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:01,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1198929175, now seen corresponding path program 1 times [2022-12-14 03:11:01,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:01,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107140475] [2022-12-14 03:11:01,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:01,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2022-12-14 03:11:01,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:01,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107140475] [2022-12-14 03:11:01,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107140475] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:01,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:11:01,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:11:01,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118754506] [2022-12-14 03:11:01,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:01,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:11:01,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:01,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:11:01,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:11:01,699 INFO L87 Difference]: Start difference. First operand 4942 states and 7128 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 03:11:04,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:11:05,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:05,415 INFO L93 Difference]: Finished difference Result 6541 states and 9406 transitions. [2022-12-14 03:11:05,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 03:11:05,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2022-12-14 03:11:05,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:05,439 INFO L225 Difference]: With dead ends: 6541 [2022-12-14 03:11:05,440 INFO L226 Difference]: Without dead ends: 6539 [2022-12-14 03:11:05,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:11:05,443 INFO L413 NwaCegarLoop]: 1696 mSDtfsCounter, 1270 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 6438 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:05,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 6438 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-12-14 03:11:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2022-12-14 03:11:05,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 6532. [2022-12-14 03:11:05,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6532 states, 3776 states have (on average 1.30323093220339) internal successors, (4921), 3961 states have internal predecessors, (4921), 2226 states have call successors, (2226), 533 states have call predecessors, (2226), 527 states have return successors, (2253), 2099 states have call predecessors, (2253), 2218 states have call successors, (2253) [2022-12-14 03:11:05,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 9400 transitions. [2022-12-14 03:11:05,693 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 9400 transitions. Word has length 159 [2022-12-14 03:11:05,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:05,694 INFO L495 AbstractCegarLoop]: Abstraction has 6532 states and 9400 transitions. [2022-12-14 03:11:05,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 03:11:05,694 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 9400 transitions. [2022-12-14 03:11:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-12-14 03:11:05,698 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:05,698 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2022-12-14 03:11:05,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 03:11:05,698 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:11:05,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:05,699 INFO L85 PathProgramCache]: Analyzing trace with hash 588535172, now seen corresponding path program 1 times [2022-12-14 03:11:05,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:05,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802151210] [2022-12-14 03:11:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:05,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:06,030 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2022-12-14 03:11:06,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:06,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802151210] [2022-12-14 03:11:06,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802151210] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:06,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:11:06,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:11:06,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905764241] [2022-12-14 03:11:06,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:06,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:11:06,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:06,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:11:06,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:11:06,032 INFO L87 Difference]: Start difference. First operand 6532 states and 9400 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 03:11:08,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:11:09,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:09,627 INFO L93 Difference]: Finished difference Result 6545 states and 9409 transitions. [2022-12-14 03:11:09,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 03:11:09,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 163 [2022-12-14 03:11:09,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:09,650 INFO L225 Difference]: With dead ends: 6545 [2022-12-14 03:11:09,650 INFO L226 Difference]: Without dead ends: 6543 [2022-12-14 03:11:09,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:11:09,653 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1265 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:09,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-12-14 03:11:09,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6543 states. [2022-12-14 03:11:09,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6543 to 6536. [2022-12-14 03:11:09,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6536 states, 3779 states have (on average 1.3029902090500132) internal successors, (4924), 3964 states have internal predecessors, (4924), 2226 states have call successors, (2226), 534 states have call predecessors, (2226), 528 states have return successors, (2253), 2099 states have call predecessors, (2253), 2218 states have call successors, (2253) [2022-12-14 03:11:09,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6536 states to 6536 states and 9403 transitions. [2022-12-14 03:11:09,926 INFO L78 Accepts]: Start accepts. Automaton has 6536 states and 9403 transitions. Word has length 163 [2022-12-14 03:11:09,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:09,927 INFO L495 AbstractCegarLoop]: Abstraction has 6536 states and 9403 transitions. [2022-12-14 03:11:09,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 03:11:09,927 INFO L276 IsEmpty]: Start isEmpty. Operand 6536 states and 9403 transitions. [2022-12-14 03:11:09,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-14 03:11:09,932 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:09,932 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:11:09,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 03:11:09,933 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:11:09,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:09,933 INFO L85 PathProgramCache]: Analyzing trace with hash -773541160, now seen corresponding path program 1 times [2022-12-14 03:11:09,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:09,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860400790] [2022-12-14 03:11:09,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:09,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2022-12-14 03:11:10,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:10,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860400790] [2022-12-14 03:11:10,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860400790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:10,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:11:10,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:11:10,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956843751] [2022-12-14 03:11:10,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:10,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:11:10,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:10,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:11:10,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:11:10,226 INFO L87 Difference]: Start difference. First operand 6536 states and 9403 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 03:11:13,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:11:13,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:13,773 INFO L93 Difference]: Finished difference Result 6549 states and 9412 transitions. [2022-12-14 03:11:13,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 03:11:13,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 167 [2022-12-14 03:11:13,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:13,793 INFO L225 Difference]: With dead ends: 6549 [2022-12-14 03:11:13,793 INFO L226 Difference]: Without dead ends: 6547 [2022-12-14 03:11:13,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:11:13,796 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1266 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:13,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-12-14 03:11:13,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6547 states. [2022-12-14 03:11:13,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6547 to 6540. [2022-12-14 03:11:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6540 states, 3782 states have (on average 1.3027498677948175) internal successors, (4927), 3967 states have internal predecessors, (4927), 2226 states have call successors, (2226), 535 states have call predecessors, (2226), 529 states have return successors, (2253), 2099 states have call predecessors, (2253), 2218 states have call successors, (2253) [2022-12-14 03:11:14,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6540 states to 6540 states and 9406 transitions. [2022-12-14 03:11:14,013 INFO L78 Accepts]: Start accepts. Automaton has 6540 states and 9406 transitions. Word has length 167 [2022-12-14 03:11:14,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:14,013 INFO L495 AbstractCegarLoop]: Abstraction has 6540 states and 9406 transitions. [2022-12-14 03:11:14,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 03:11:14,014 INFO L276 IsEmpty]: Start isEmpty. Operand 6540 states and 9406 transitions. [2022-12-14 03:11:14,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-12-14 03:11:14,018 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:14,018 INFO L195 NwaCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 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] [2022-12-14 03:11:14,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 03:11:14,018 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:11:14,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:14,018 INFO L85 PathProgramCache]: Analyzing trace with hash 560201512, now seen corresponding path program 1 times [2022-12-14 03:11:14,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:14,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304693291] [2022-12-14 03:11:14,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:14,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:14,244 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2022-12-14 03:11:14,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:14,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304693291] [2022-12-14 03:11:14,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304693291] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:14,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:11:14,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:11:14,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880474339] [2022-12-14 03:11:14,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:14,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:11:14,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:14,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:11:14,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:11:14,245 INFO L87 Difference]: Start difference. First operand 6540 states and 9406 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-14 03:11:17,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:11:17,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:17,669 INFO L93 Difference]: Finished difference Result 14262 states and 20500 transitions. [2022-12-14 03:11:17,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:11:17,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 164 [2022-12-14 03:11:17,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:17,691 INFO L225 Difference]: With dead ends: 14262 [2022-12-14 03:11:17,691 INFO L226 Difference]: Without dead ends: 7759 [2022-12-14 03:11:17,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:11:17,706 INFO L413 NwaCegarLoop]: 2009 mSDtfsCounter, 972 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 3361 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:17,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 3361 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 658 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-12-14 03:11:17,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7759 states. [2022-12-14 03:11:17,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7759 to 7695. [2022-12-14 03:11:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7695 states, 4591 states have (on average 1.3014593770420388) internal successors, (5975), 4788 states have internal predecessors, (5975), 2481 states have call successors, (2481), 631 states have call predecessors, (2481), 620 states have return successors, (2500), 2336 states have call predecessors, (2500), 2473 states have call successors, (2500) [2022-12-14 03:11:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7695 states to 7695 states and 10956 transitions. [2022-12-14 03:11:17,961 INFO L78 Accepts]: Start accepts. Automaton has 7695 states and 10956 transitions. Word has length 164 [2022-12-14 03:11:17,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:17,962 INFO L495 AbstractCegarLoop]: Abstraction has 7695 states and 10956 transitions. [2022-12-14 03:11:17,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-14 03:11:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand 7695 states and 10956 transitions. [2022-12-14 03:11:17,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-14 03:11:17,964 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:17,964 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:11:17,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 03:11:17,965 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:11:17,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:17,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1312846256, now seen corresponding path program 1 times [2022-12-14 03:11:17,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:17,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769725735] [2022-12-14 03:11:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:17,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:18,272 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2022-12-14 03:11:18,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:18,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769725735] [2022-12-14 03:11:18,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769725735] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:18,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:11:18,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:11:18,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551571000] [2022-12-14 03:11:18,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:18,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:11:18,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:18,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:11:18,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:11:18,274 INFO L87 Difference]: Start difference. First operand 7695 states and 10956 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-12-14 03:11:21,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:11:21,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:21,831 INFO L93 Difference]: Finished difference Result 7708 states and 10965 transitions. [2022-12-14 03:11:21,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 03:11:21,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 174 [2022-12-14 03:11:21,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:21,858 INFO L225 Difference]: With dead ends: 7708 [2022-12-14 03:11:21,859 INFO L226 Difference]: Without dead ends: 7706 [2022-12-14 03:11:21,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:11:21,863 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1265 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:21,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-12-14 03:11:21,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7706 states. [2022-12-14 03:11:22,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7706 to 7699. [2022-12-14 03:11:22,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7699 states, 4594 states have (on average 1.3012625163256422) internal successors, (5978), 4791 states have internal predecessors, (5978), 2481 states have call successors, (2481), 632 states have call predecessors, (2481), 621 states have return successors, (2500), 2336 states have call predecessors, (2500), 2473 states have call successors, (2500) [2022-12-14 03:11:22,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7699 states to 7699 states and 10959 transitions. [2022-12-14 03:11:22,123 INFO L78 Accepts]: Start accepts. Automaton has 7699 states and 10959 transitions. Word has length 174 [2022-12-14 03:11:22,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:22,123 INFO L495 AbstractCegarLoop]: Abstraction has 7699 states and 10959 transitions. [2022-12-14 03:11:22,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-12-14 03:11:22,124 INFO L276 IsEmpty]: Start isEmpty. Operand 7699 states and 10959 transitions. [2022-12-14 03:11:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-14 03:11:22,126 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:22,127 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:11:22,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 03:11:22,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:11:22,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:22,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1603033621, now seen corresponding path program 1 times [2022-12-14 03:11:22,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:22,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62882704] [2022-12-14 03:11:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:22,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2022-12-14 03:11:22,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:22,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62882704] [2022-12-14 03:11:22,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62882704] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:22,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:11:22,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:11:22,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413461443] [2022-12-14 03:11:22,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:22,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:11:22,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:22,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:11:22,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:11:22,409 INFO L87 Difference]: Start difference. First operand 7699 states and 10959 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 03:11:25,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:11:25,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:25,983 INFO L93 Difference]: Finished difference Result 7712 states and 10968 transitions. [2022-12-14 03:11:25,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 03:11:25,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 178 [2022-12-14 03:11:25,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:26,003 INFO L225 Difference]: With dead ends: 7712 [2022-12-14 03:11:26,004 INFO L226 Difference]: Without dead ends: 7710 [2022-12-14 03:11:26,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:11:26,007 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1265 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:26,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-12-14 03:11:26,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7710 states. [2022-12-14 03:11:26,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7710 to 7703. [2022-12-14 03:11:26,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7703 states, 4597 states have (on average 1.3010659125516641) internal successors, (5981), 4794 states have internal predecessors, (5981), 2481 states have call successors, (2481), 633 states have call predecessors, (2481), 622 states have return successors, (2500), 2336 states have call predecessors, (2500), 2473 states have call successors, (2500) [2022-12-14 03:11:26,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7703 states to 7703 states and 10962 transitions. [2022-12-14 03:11:26,273 INFO L78 Accepts]: Start accepts. Automaton has 7703 states and 10962 transitions. Word has length 178 [2022-12-14 03:11:26,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:26,273 INFO L495 AbstractCegarLoop]: Abstraction has 7703 states and 10962 transitions. [2022-12-14 03:11:26,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 03:11:26,274 INFO L276 IsEmpty]: Start isEmpty. Operand 7703 states and 10962 transitions. [2022-12-14 03:11:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-12-14 03:11:26,278 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:26,279 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:11:26,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 03:11:26,279 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:11:26,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:26,279 INFO L85 PathProgramCache]: Analyzing trace with hash 880264624, now seen corresponding path program 1 times [2022-12-14 03:11:26,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:26,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904808085] [2022-12-14 03:11:26,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:26,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2022-12-14 03:11:26,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:26,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904808085] [2022-12-14 03:11:26,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904808085] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:26,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:11:26,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:11:26,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589322639] [2022-12-14 03:11:26,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:26,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:11:26,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:26,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:11:26,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:11:26,565 INFO L87 Difference]: Start difference. First operand 7703 states and 10962 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 03:11:29,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:11:30,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:30,186 INFO L93 Difference]: Finished difference Result 7716 states and 10971 transitions. [2022-12-14 03:11:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 03:11:30,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 184 [2022-12-14 03:11:30,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:30,211 INFO L225 Difference]: With dead ends: 7716 [2022-12-14 03:11:30,211 INFO L226 Difference]: Without dead ends: 7714 [2022-12-14 03:11:30,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:11:30,216 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1265 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:30,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-12-14 03:11:30,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7714 states. [2022-12-14 03:11:30,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7714 to 7707. [2022-12-14 03:11:30,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7707 states, 4600 states have (on average 1.3008695652173914) internal successors, (5984), 4797 states have internal predecessors, (5984), 2481 states have call successors, (2481), 634 states have call predecessors, (2481), 623 states have return successors, (2500), 2336 states have call predecessors, (2500), 2473 states have call successors, (2500) [2022-12-14 03:11:30,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7707 states to 7707 states and 10965 transitions. [2022-12-14 03:11:30,527 INFO L78 Accepts]: Start accepts. Automaton has 7707 states and 10965 transitions. Word has length 184 [2022-12-14 03:11:30,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:30,527 INFO L495 AbstractCegarLoop]: Abstraction has 7707 states and 10965 transitions. [2022-12-14 03:11:30,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 03:11:30,527 INFO L276 IsEmpty]: Start isEmpty. Operand 7707 states and 10965 transitions. [2022-12-14 03:11:30,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-12-14 03:11:30,530 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:30,530 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 7, 6, 6, 4, 4, 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] [2022-12-14 03:11:30,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 03:11:30,531 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:11:30,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:30,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1477061224, now seen corresponding path program 1 times [2022-12-14 03:11:30,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:30,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839137102] [2022-12-14 03:11:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:30,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2022-12-14 03:11:30,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:30,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839137102] [2022-12-14 03:11:30,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839137102] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:30,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:11:30,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:11:30,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973338129] [2022-12-14 03:11:30,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:30,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:11:30,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:30,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:11:30,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:11:30,825 INFO L87 Difference]: Start difference. First operand 7707 states and 10965 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 03:11:33,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:11:34,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:34,576 INFO L93 Difference]: Finished difference Result 12264 states and 17449 transitions. [2022-12-14 03:11:34,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 03:11:34,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 187 [2022-12-14 03:11:34,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:34,605 INFO L225 Difference]: With dead ends: 12264 [2022-12-14 03:11:34,605 INFO L226 Difference]: Without dead ends: 12262 [2022-12-14 03:11:34,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:11:34,610 INFO L413 NwaCegarLoop]: 1820 mSDtfsCounter, 1252 mSDsluCounter, 4980 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 6800 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:34,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 6800 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1127 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-12-14 03:11:34,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12262 states. [2022-12-14 03:11:34,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12262 to 12251. [2022-12-14 03:11:34,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12251 states, 7289 states have (on average 1.3042941418575937) internal successors, (9507), 7617 states have internal predecessors, (9507), 3948 states have call successors, (3948), 1039 states have call predecessors, (3948), 1011 states have return successors, (3982), 3685 states have call predecessors, (3982), 3936 states have call successors, (3982) [2022-12-14 03:11:35,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12251 states to 12251 states and 17437 transitions. [2022-12-14 03:11:35,015 INFO L78 Accepts]: Start accepts. Automaton has 12251 states and 17437 transitions. Word has length 187 [2022-12-14 03:11:35,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:35,016 INFO L495 AbstractCegarLoop]: Abstraction has 12251 states and 17437 transitions. [2022-12-14 03:11:35,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 03:11:35,016 INFO L276 IsEmpty]: Start isEmpty. Operand 12251 states and 17437 transitions. [2022-12-14 03:11:35,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-12-14 03:11:35,018 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:35,018 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 8, 7, 7, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:11:35,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 03:11:35,018 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:11:35,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:35,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1227636900, now seen corresponding path program 1 times [2022-12-14 03:11:35,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:35,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764427512] [2022-12-14 03:11:35,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:35,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2022-12-14 03:11:35,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:35,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764427512] [2022-12-14 03:11:35,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764427512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:35,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:11:35,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:11:35,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325140382] [2022-12-14 03:11:35,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:35,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:11:35,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:35,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:11:35,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:11:35,301 INFO L87 Difference]: Start difference. First operand 12251 states and 17437 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-12-14 03:11:38,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:11:39,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:39,123 INFO L93 Difference]: Finished difference Result 12264 states and 17446 transitions. [2022-12-14 03:11:39,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 03:11:39,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 193 [2022-12-14 03:11:39,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:39,151 INFO L225 Difference]: With dead ends: 12264 [2022-12-14 03:11:39,151 INFO L226 Difference]: Without dead ends: 12262 [2022-12-14 03:11:39,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:11:39,155 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1265 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:39,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-12-14 03:11:39,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12262 states. [2022-12-14 03:11:39,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12262 to 12255. [2022-12-14 03:11:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12255 states, 7292 states have (on average 1.3041689522764675) internal successors, (9510), 7620 states have internal predecessors, (9510), 3948 states have call successors, (3948), 1040 states have call predecessors, (3948), 1012 states have return successors, (3982), 3685 states have call predecessors, (3982), 3936 states have call successors, (3982) [2022-12-14 03:11:39,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12255 states to 12255 states and 17440 transitions. [2022-12-14 03:11:39,619 INFO L78 Accepts]: Start accepts. Automaton has 12255 states and 17440 transitions. Word has length 193 [2022-12-14 03:11:39,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:39,619 INFO L495 AbstractCegarLoop]: Abstraction has 12255 states and 17440 transitions. [2022-12-14 03:11:39,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-12-14 03:11:39,620 INFO L276 IsEmpty]: Start isEmpty. Operand 12255 states and 17440 transitions. [2022-12-14 03:11:39,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-12-14 03:11:39,641 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:39,641 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2022-12-14 03:11:39,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 03:11:39,641 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:11:39,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:39,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1958880171, now seen corresponding path program 1 times [2022-12-14 03:11:39,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:39,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337754667] [2022-12-14 03:11:39,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:39,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:39,889 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2022-12-14 03:11:39,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:39,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337754667] [2022-12-14 03:11:39,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337754667] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:39,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:11:39,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:11:39,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531113711] [2022-12-14 03:11:39,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:39,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:11:39,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:39,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:11:39,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:11:39,891 INFO L87 Difference]: Start difference. First operand 12255 states and 17440 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 03:11:42,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:11:43,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:43,671 INFO L93 Difference]: Finished difference Result 12268 states and 17449 transitions. [2022-12-14 03:11:43,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 03:11:43,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 198 [2022-12-14 03:11:43,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:43,699 INFO L225 Difference]: With dead ends: 12268 [2022-12-14 03:11:43,699 INFO L226 Difference]: Without dead ends: 12266 [2022-12-14 03:11:43,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:11:43,704 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1265 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:43,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-12-14 03:11:43,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12266 states. [2022-12-14 03:11:44,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12266 to 12259. [2022-12-14 03:11:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12259 states, 7295 states have (on average 1.304043865661412) internal successors, (9513), 7623 states have internal predecessors, (9513), 3948 states have call successors, (3948), 1041 states have call predecessors, (3948), 1013 states have return successors, (3982), 3685 states have call predecessors, (3982), 3936 states have call successors, (3982) [2022-12-14 03:11:44,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12259 states to 12259 states and 17443 transitions. [2022-12-14 03:11:44,146 INFO L78 Accepts]: Start accepts. Automaton has 12259 states and 17443 transitions. Word has length 198 [2022-12-14 03:11:44,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:44,147 INFO L495 AbstractCegarLoop]: Abstraction has 12259 states and 17443 transitions. [2022-12-14 03:11:44,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 03:11:44,147 INFO L276 IsEmpty]: Start isEmpty. Operand 12259 states and 17443 transitions. [2022-12-14 03:11:44,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-12-14 03:11:44,150 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:44,150 INFO L195 NwaCegarLoop]: trace histogram [13, 10, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:11:44,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 03:11:44,151 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:11:44,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:44,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1774686655, now seen corresponding path program 1 times [2022-12-14 03:11:44,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:44,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42348525] [2022-12-14 03:11:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:44,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2022-12-14 03:11:44,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:44,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42348525] [2022-12-14 03:11:44,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42348525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:44,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:11:44,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:11:44,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999909135] [2022-12-14 03:11:44,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:44,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:11:44,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:44,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:11:44,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:11:44,432 INFO L87 Difference]: Start difference. First operand 12259 states and 17443 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-12-14 03:11:47,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:11:48,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:48,186 INFO L93 Difference]: Finished difference Result 12272 states and 17452 transitions. [2022-12-14 03:11:48,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 03:11:48,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 202 [2022-12-14 03:11:48,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:48,215 INFO L225 Difference]: With dead ends: 12272 [2022-12-14 03:11:48,215 INFO L226 Difference]: Without dead ends: 12270 [2022-12-14 03:11:48,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:11:48,220 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1266 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:48,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 6441 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-12-14 03:11:48,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12270 states. [2022-12-14 03:11:48,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12270 to 12263. [2022-12-14 03:11:48,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12263 states, 7298 states have (on average 1.3039188818854481) internal successors, (9516), 7626 states have internal predecessors, (9516), 3948 states have call successors, (3948), 1042 states have call predecessors, (3948), 1014 states have return successors, (3982), 3685 states have call predecessors, (3982), 3936 states have call successors, (3982) [2022-12-14 03:11:48,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12263 states to 12263 states and 17446 transitions. [2022-12-14 03:11:48,618 INFO L78 Accepts]: Start accepts. Automaton has 12263 states and 17446 transitions. Word has length 202 [2022-12-14 03:11:48,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:48,618 INFO L495 AbstractCegarLoop]: Abstraction has 12263 states and 17446 transitions. [2022-12-14 03:11:48,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-12-14 03:11:48,619 INFO L276 IsEmpty]: Start isEmpty. Operand 12263 states and 17446 transitions. [2022-12-14 03:11:48,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-12-14 03:11:48,621 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:48,621 INFO L195 NwaCegarLoop]: trace histogram [13, 11, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:11:48,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 03:11:48,622 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:11:48,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:48,622 INFO L85 PathProgramCache]: Analyzing trace with hash 2055974793, now seen corresponding path program 1 times [2022-12-14 03:11:48,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:48,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786879634] [2022-12-14 03:11:48,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:48,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2022-12-14 03:11:48,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:48,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786879634] [2022-12-14 03:11:48,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786879634] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:48,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:11:48,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:11:48,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879033156] [2022-12-14 03:11:48,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:48,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:11:48,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:48,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:11:48,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:11:48,863 INFO L87 Difference]: Start difference. First operand 12263 states and 17446 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-12-14 03:11:52,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:11:54,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:11:54,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:54,908 INFO L93 Difference]: Finished difference Result 12277 states and 17459 transitions. [2022-12-14 03:11:54,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:11:54,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 209 [2022-12-14 03:11:54,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:54,934 INFO L225 Difference]: With dead ends: 12277 [2022-12-14 03:11:54,935 INFO L226 Difference]: Without dead ends: 12273 [2022-12-14 03:11:54,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:11:54,939 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 1577 mSDsluCounter, 2759 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 4148 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:54,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 4148 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 746 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2022-12-14 03:11:54,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12273 states. [2022-12-14 03:11:55,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12273 to 12273. [2022-12-14 03:11:55,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12273 states, 7306 states have (on average 1.3034492198193266) internal successors, (9523), 7633 states have internal predecessors, (9523), 3948 states have call successors, (3948), 1045 states have call predecessors, (3948), 1016 states have return successors, (3982), 3685 states have call predecessors, (3982), 3936 states have call successors, (3982) [2022-12-14 03:11:55,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12273 states to 12273 states and 17453 transitions. [2022-12-14 03:11:55,380 INFO L78 Accepts]: Start accepts. Automaton has 12273 states and 17453 transitions. Word has length 209 [2022-12-14 03:11:55,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:55,381 INFO L495 AbstractCegarLoop]: Abstraction has 12273 states and 17453 transitions. [2022-12-14 03:11:55,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-12-14 03:11:55,381 INFO L276 IsEmpty]: Start isEmpty. Operand 12273 states and 17453 transitions. [2022-12-14 03:11:55,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-12-14 03:11:55,383 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:55,384 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 11, 11, 9, 9, 9, 9, 9, 9, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:11:55,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 03:11:55,384 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:11:55,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:55,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1720697904, now seen corresponding path program 1 times [2022-12-14 03:11:55,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:55,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838657605] [2022-12-14 03:11:55,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:55,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:11:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2022-12-14 03:11:55,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:11:55,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838657605] [2022-12-14 03:11:55,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838657605] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:11:55,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:11:55,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:11:55,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317955877] [2022-12-14 03:11:55,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:11:55,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:11:55,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:11:55,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:11:55,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:11:55,604 INFO L87 Difference]: Start difference. First operand 12273 states and 17453 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-12-14 03:11:58,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:11:59,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:11:59,437 INFO L93 Difference]: Finished difference Result 12280 states and 17457 transitions. [2022-12-14 03:11:59,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 03:11:59,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 214 [2022-12-14 03:11:59,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:11:59,466 INFO L225 Difference]: With dead ends: 12280 [2022-12-14 03:11:59,466 INFO L226 Difference]: Without dead ends: 12185 [2022-12-14 03:11:59,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:11:59,471 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1261 mSDsluCounter, 4744 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 6443 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-14 03:11:59,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 6443 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 982 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-12-14 03:11:59,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12185 states. [2022-12-14 03:11:59,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12185 to 12180. [2022-12-14 03:11:59,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12180 states, 7265 states have (on average 1.3035099793530627) internal successors, (9470), 7581 states have internal predecessors, (9470), 3909 states have call successors, (3909), 1028 states have call predecessors, (3909), 1003 states have return successors, (3947), 3661 states have call predecessors, (3947), 3901 states have call successors, (3947) [2022-12-14 03:11:59,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12180 states to 12180 states and 17326 transitions. [2022-12-14 03:11:59,924 INFO L78 Accepts]: Start accepts. Automaton has 12180 states and 17326 transitions. Word has length 214 [2022-12-14 03:11:59,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:11:59,925 INFO L495 AbstractCegarLoop]: Abstraction has 12180 states and 17326 transitions. [2022-12-14 03:11:59,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-12-14 03:11:59,925 INFO L276 IsEmpty]: Start isEmpty. Operand 12180 states and 17326 transitions. [2022-12-14 03:11:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-12-14 03:11:59,927 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:11:59,927 INFO L195 NwaCegarLoop]: trace histogram [15, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 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] [2022-12-14 03:11:59,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 03:11:59,928 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:11:59,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:11:59,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1891891995, now seen corresponding path program 1 times [2022-12-14 03:11:59,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:11:59,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678247798] [2022-12-14 03:11:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:11:59,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:11:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:12:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2022-12-14 03:12:00,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:12:00,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678247798] [2022-12-14 03:12:00,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678247798] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:12:00,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:12:00,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:12:00,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626868605] [2022-12-14 03:12:00,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:12:00,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:12:00,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:12:00,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:12:00,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:12:00,120 INFO L87 Difference]: Start difference. First operand 12180 states and 17326 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-12-14 03:12:03,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:12:03,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:12:03,998 INFO L93 Difference]: Finished difference Result 28156 states and 40083 transitions. [2022-12-14 03:12:03,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:12:03,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 214 [2022-12-14 03:12:03,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:12:04,035 INFO L225 Difference]: With dead ends: 28156 [2022-12-14 03:12:04,035 INFO L226 Difference]: Without dead ends: 16153 [2022-12-14 03:12:04,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:12:04,060 INFO L413 NwaCegarLoop]: 2174 mSDtfsCounter, 975 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 3524 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:12:04,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 3524 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 693 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-12-14 03:12:04,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16153 states. [2022-12-14 03:12:04,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16153 to 16083. [2022-12-14 03:12:04,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16083 states, 9712 states have (on average 1.3021004942339374) internal successors, (12646), 10110 states have internal predecessors, (12646), 5037 states have call successors, (5037), 1369 states have call predecessors, (5037), 1331 states have return successors, (5075), 4712 states have call predecessors, (5075), 5029 states have call successors, (5075) [2022-12-14 03:12:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16083 states to 16083 states and 22758 transitions. [2022-12-14 03:12:04,651 INFO L78 Accepts]: Start accepts. Automaton has 16083 states and 22758 transitions. Word has length 214 [2022-12-14 03:12:04,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:12:04,651 INFO L495 AbstractCegarLoop]: Abstraction has 16083 states and 22758 transitions. [2022-12-14 03:12:04,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-12-14 03:12:04,652 INFO L276 IsEmpty]: Start isEmpty. Operand 16083 states and 22758 transitions. [2022-12-14 03:12:04,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-12-14 03:12:04,658 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:12:04,658 INFO L195 NwaCegarLoop]: trace histogram [17, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:12:04,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 03:12:04,658 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:12:04,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:12:04,659 INFO L85 PathProgramCache]: Analyzing trace with hash -439394494, now seen corresponding path program 1 times [2022-12-14 03:12:04,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:12:04,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507180783] [2022-12-14 03:12:04,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:12:04,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:12:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:12:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2022-12-14 03:12:05,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:12:05,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507180783] [2022-12-14 03:12:05,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507180783] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:12:05,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:12:05,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:12:05,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531185481] [2022-12-14 03:12:05,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:12:05,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:12:05,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:12:05,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:12:05,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:12:05,093 INFO L87 Difference]: Start difference. First operand 16083 states and 22758 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 03:12:08,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:12:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:12:09,165 INFO L93 Difference]: Finished difference Result 16097 states and 22770 transitions. [2022-12-14 03:12:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:12:09,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 276 [2022-12-14 03:12:09,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:12:09,202 INFO L225 Difference]: With dead ends: 16097 [2022-12-14 03:12:09,203 INFO L226 Difference]: Without dead ends: 16095 [2022-12-14 03:12:09,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 03:12:09,210 INFO L413 NwaCegarLoop]: 1846 mSDtfsCounter, 1222 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 6895 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-14 03:12:09,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 6895 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1122 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-12-14 03:12:09,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16095 states. [2022-12-14 03:12:09,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16095 to 16083. [2022-12-14 03:12:09,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16083 states, 9712 states have (on average 1.3008649093904447) internal successors, (12634), 10110 states have internal predecessors, (12634), 5037 states have call successors, (5037), 1369 states have call predecessors, (5037), 1331 states have return successors, (5075), 4712 states have call predecessors, (5075), 5029 states have call successors, (5075) [2022-12-14 03:12:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16083 states to 16083 states and 22746 transitions. [2022-12-14 03:12:09,793 INFO L78 Accepts]: Start accepts. Automaton has 16083 states and 22746 transitions. Word has length 276 [2022-12-14 03:12:09,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:12:09,794 INFO L495 AbstractCegarLoop]: Abstraction has 16083 states and 22746 transitions. [2022-12-14 03:12:09,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 03:12:09,794 INFO L276 IsEmpty]: Start isEmpty. Operand 16083 states and 22746 transitions. [2022-12-14 03:12:09,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-12-14 03:12:09,798 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:12:09,798 INFO L195 NwaCegarLoop]: trace histogram [17, 11, 11, 9, 9, 9, 9, 9, 9, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:12:09,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 03:12:09,798 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:12:09,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:12:09,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1288727333, now seen corresponding path program 1 times [2022-12-14 03:12:09,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:12:09,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472116069] [2022-12-14 03:12:09,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:12:09,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:12:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:12:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2022-12-14 03:12:10,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:12:10,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472116069] [2022-12-14 03:12:10,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472116069] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:12:10,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:12:10,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 03:12:10,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164914118] [2022-12-14 03:12:10,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:12:10,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 03:12:10,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:12:10,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 03:12:10,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 03:12:10,164 INFO L87 Difference]: Start difference. First operand 16083 states and 22746 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-12-14 03:12:13,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:12:14,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:12:14,040 INFO L93 Difference]: Finished difference Result 16492 states and 23169 transitions. [2022-12-14 03:12:14,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 03:12:14,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 295 [2022-12-14 03:12:14,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:12:14,074 INFO L225 Difference]: With dead ends: 16492 [2022-12-14 03:12:14,075 INFO L226 Difference]: Without dead ends: 16490 [2022-12-14 03:12:14,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 03:12:14,080 INFO L413 NwaCegarLoop]: 1451 mSDtfsCounter, 331 mSDsluCounter, 4092 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 5543 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-14 03:12:14,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 5543 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1017 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-12-14 03:12:14,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16490 states. [2022-12-14 03:12:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16490 to 16490. [2022-12-14 03:12:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16490 states, 9928 states have (on average 1.2943190975020145) internal successors, (12850), 10329 states have internal predecessors, (12850), 5134 states have call successors, (5134), 1464 states have call predecessors, (5134), 1426 states have return successors, (5172), 4809 states have call predecessors, (5172), 5126 states have call successors, (5172) [2022-12-14 03:12:14,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16490 states to 16490 states and 23156 transitions. [2022-12-14 03:12:14,711 INFO L78 Accepts]: Start accepts. Automaton has 16490 states and 23156 transitions. Word has length 295 [2022-12-14 03:12:14,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:12:14,711 INFO L495 AbstractCegarLoop]: Abstraction has 16490 states and 23156 transitions. [2022-12-14 03:12:14,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-12-14 03:12:14,711 INFO L276 IsEmpty]: Start isEmpty. Operand 16490 states and 23156 transitions. [2022-12-14 03:12:14,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-12-14 03:12:14,719 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:12:14,719 INFO L195 NwaCegarLoop]: trace histogram [21, 15, 15, 11, 11, 11, 11, 11, 11, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:12:14,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 03:12:14,719 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:12:14,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:12:14,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1508171543, now seen corresponding path program 1 times [2022-12-14 03:12:14,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:12:14,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204716642] [2022-12-14 03:12:14,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:12:14,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:12:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:12:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1132 trivial. 0 not checked. [2022-12-14 03:12:15,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:12:15,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204716642] [2022-12-14 03:12:15,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204716642] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:12:15,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:12:15,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 03:12:15,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503512808] [2022-12-14 03:12:15,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:12:15,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:12:15,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:12:15,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:12:15,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:12:15,108 INFO L87 Difference]: Start difference. First operand 16490 states and 23156 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-12-14 03:12:18,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 03:12:19,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:12:19,091 INFO L93 Difference]: Finished difference Result 39855 states and 57347 transitions. [2022-12-14 03:12:19,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:12:19,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 404 [2022-12-14 03:12:19,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:12:19,147 INFO L225 Difference]: With dead ends: 39855 [2022-12-14 03:12:19,147 INFO L226 Difference]: Without dead ends: 23542 [2022-12-14 03:12:19,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:12:19,179 INFO L413 NwaCegarLoop]: 1968 mSDtfsCounter, 417 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 3478 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:12:19,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 3478 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 599 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 03:12:19,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23542 states. [2022-12-14 03:12:19,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23542 to 16500. [2022-12-14 03:12:19,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16500 states, 9938 states have (on average 1.2940229422418998) internal successors, (12860), 10339 states have internal predecessors, (12860), 5134 states have call successors, (5134), 1464 states have call predecessors, (5134), 1426 states have return successors, (5172), 4809 states have call predecessors, (5172), 5126 states have call successors, (5172) [2022-12-14 03:12:19,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16500 states to 16500 states and 23166 transitions. [2022-12-14 03:12:19,966 INFO L78 Accepts]: Start accepts. Automaton has 16500 states and 23166 transitions. Word has length 404 [2022-12-14 03:12:19,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:12:19,966 INFO L495 AbstractCegarLoop]: Abstraction has 16500 states and 23166 transitions. [2022-12-14 03:12:19,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-12-14 03:12:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand 16500 states and 23166 transitions. [2022-12-14 03:12:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-12-14 03:12:19,974 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:12:19,975 INFO L195 NwaCegarLoop]: trace histogram [21, 15, 15, 11, 11, 11, 11, 11, 11, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:12:19,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 03:12:19,975 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 03:12:19,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:12:19,975 INFO L85 PathProgramCache]: Analyzing trace with hash -284309191, now seen corresponding path program 1 times [2022-12-14 03:12:19,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:12:19,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32128444] [2022-12-14 03:12:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:12:19,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:12:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:12:20,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2022-12-14 03:12:20,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:12:20,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32128444] [2022-12-14 03:12:20,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32128444] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:12:20,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791397693] [2022-12-14 03:12:20,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:12:20,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:12:20,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:12:20,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:12:20,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c019ee0-b270-4724-99df-7970441ff2c3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 03:12:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:12:21,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 4457 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 03:12:21,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:12:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 316 proven. 1 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-12-14 03:12:21,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:12:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2022-12-14 03:12:21,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791397693] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:12:21,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1505334677] [2022-12-14 03:12:21,560 INFO L159 IcfgInterpreter]: Started Sifa with 211 locations of interest [2022-12-14 03:12:21,560 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 03:12:21,564 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 03:12:21,569 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 03:12:21,570 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs