./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.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_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/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_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/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_5586b495-ef76-4584-845b-d6faf868cd6d/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 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 --- 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 06:21:51,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:21:51,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:21:51,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:21:51,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:21:51,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:21:51,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:21:51,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:21:51,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:21:51,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:21:51,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:21:51,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:21:51,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:21:51,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:21:51,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:21:51,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:21:51,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:21:51,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:21:51,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:21:51,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:21:51,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:21:51,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:21:51,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:21:51,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:21:51,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:21:51,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:21:51,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:21:51,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:21:51,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:21:51,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:21:51,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:21:51,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:21:51,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:21:51,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:21:51,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:21:51,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:21:51,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:21:51,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:21:51,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:21:51,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:21:51,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:21:51,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 06:21:51,559 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:21:51,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:21:51,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:21:51,560 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:21:51,560 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:21:51,561 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:21:51,561 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:21:51,561 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:21:51,561 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:21:51,561 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:21:51,562 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:21:51,562 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:21:51,562 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:21:51,562 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:21:51,562 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:21:51,563 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:21:51,563 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:21:51,563 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:21:51,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:21:51,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:21:51,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:21:51,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:21:51,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:21:51,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:21:51,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:21:51,565 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:21:51,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:21:51,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:21:51,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:21:51,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:21:51,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:21:51,566 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:21:51,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:21:51,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:21:51,567 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:21:51,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:21:51,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:21:51,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:21:51,567 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_5586b495-ef76-4584-845b-d6faf868cd6d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 [2022-12-14 06:21:51,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:21:51,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:21:51,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:21:51,783 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:21:51,783 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:21:51,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-12-14 06:21:54,442 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:21:54,881 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:21:54,881 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-12-14 06:21:54,911 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/data/690b0efbb/354065fa6365422887b4693c65e7ffdb/FLAG35a46e8e2 [2022-12-14 06:21:54,925 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/data/690b0efbb/354065fa6365422887b4693c65e7ffdb [2022-12-14 06:21:54,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:21:54,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:21:54,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:21:54,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:21:54,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:21:54,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:21:54" (1/1) ... [2022-12-14 06:21:54,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8bb29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:21:54, skipping insertion in model container [2022-12-14 06:21:54,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:21:54" (1/1) ... [2022-12-14 06:21:54,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:21:55,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:21:55,762 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-12-14 06:21:55,772 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-12-14 06:21:55,784 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-14 06:21:55,836 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-14 06:21:55,907 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 06:21:55,908 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 06:21:55,908 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 06:21:55,909 WARN L623 FunctionHandler]: Unknown extern function __copy_from_user_overflow [2022-12-14 06:21:55,914 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 06:21:55,915 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 06:21:55,916 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 06:21:55,916 WARN L623 FunctionHandler]: Unknown extern function __copy_to_user_overflow [2022-12-14 06:21:55,954 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-14 06:21:55,957 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-14 06:21:55,958 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-12-14 06:21:55,965 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-12-14 06:21:55,989 WARN L623 FunctionHandler]: Unknown extern function debug_dma_alloc_coherent [2022-12-14 06:21:55,996 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 06:21:55,998 WARN L623 FunctionHandler]: Unknown extern function debug_dma_free_coherent [2022-12-14 06:21:56,033 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 06:21:56,084 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-14 06:21:56,094 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-12-14 06:21:56,138 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-14 06:21:56,139 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-14 06:21:56,148 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 06:21:56,149 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,173 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_irq [2022-12-14 06:21:56,211 WARN L623 FunctionHandler]: Unknown extern function pci_bus_read_config_byte [2022-12-14 06:21:56,216 WARN L623 FunctionHandler]: Unknown extern function pci_bus_read_config_word [2022-12-14 06:21:56,221 WARN L623 FunctionHandler]: Unknown extern function pci_bus_write_config_byte [2022-12-14 06:21:56,226 WARN L623 FunctionHandler]: Unknown extern function pci_bus_write_config_word [2022-12-14 06:21:56,266 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-12-14 06:21:56,747 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,748 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,748 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,749 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,749 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,750 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,750 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,751 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,751 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,752 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,752 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,754 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,754 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,755 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,756 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 06:21:56,756 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-14 06:21:56,758 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:21:56,767 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,768 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,772 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 06:21:56,773 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,774 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,774 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,775 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,776 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,777 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,777 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,778 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,778 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,779 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,780 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,780 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,787 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,787 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,789 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,793 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,798 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,798 WARN L623 FunctionHandler]: Unknown extern function synchronize_irq [2022-12-14 06:21:56,800 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,806 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,806 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-12-14 06:21:56,806 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-14 06:21:56,824 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,843 WARN L623 FunctionHandler]: Unknown extern function crc32_le [2022-12-14 06:21:56,865 WARN L623 FunctionHandler]: Unknown extern function pci_enable_device [2022-12-14 06:21:56,868 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-12-14 06:21:56,869 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-14 06:21:56,870 WARN L623 FunctionHandler]: Unknown extern function pci_disable_device [2022-12-14 06:21:56,876 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-14 06:21:56,877 WARN L623 FunctionHandler]: Unknown extern function pci_disable_device [2022-12-14 06:21:56,951 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,956 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:56,960 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,960 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,961 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,961 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,962 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,962 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,963 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,963 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:56,986 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 06:21:56,987 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 06:21:57,002 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,007 WARN L623 FunctionHandler]: Unknown extern function strncpy [2022-12-14 06:21:57,008 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:57,029 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,030 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,031 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,032 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,033 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,039 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,039 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,078 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,078 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,078 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,079 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,080 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,082 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,083 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,089 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,089 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,090 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,090 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,090 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,091 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,091 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,091 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,092 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,092 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,096 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,097 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:57,099 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:57,100 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:57,101 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:57,101 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:57,102 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:57,103 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:57,103 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:57,104 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:57,104 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:57,105 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:57,106 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:57,107 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:57,108 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:57,108 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:57,110 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,110 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,111 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,111 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,111 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,112 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,112 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,112 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,123 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,124 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,125 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,125 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,126 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,126 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,127 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,127 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,128 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,129 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,130 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,130 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,131 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,132 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,132 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,133 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,134 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,134 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,135 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,135 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,136 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,141 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,141 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,142 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,142 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,142 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,143 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,143 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,144 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,144 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,145 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,146 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,147 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,150 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-14 06:21:57,152 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-14 06:21:57,152 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:57,152 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-14 06:21:57,154 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-14 06:21:57,155 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-14 06:21:57,544 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-14 06:21:57,545 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-14 06:21:57,545 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-14 06:21:57,546 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-14 06:21:57,546 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-14 06:21:57,547 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-14 06:21:57,547 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-14 06:21:57,548 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-14 06:21:57,549 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-14 06:21:57,549 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-14 06:21:57,550 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-14 06:21:57,550 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-14 06:21:57,551 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 06:21:57,553 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 06:21:57,554 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 06:21:57,564 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-12-14 06:21:57,566 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-12-14 06:21:57,569 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 06:21:57,570 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 06:21:57,571 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-12-14 06:21:57,572 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 06:21:57,573 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 06:21:57,574 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 06:21:57,574 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-14 06:21:57,575 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-12-14 06:21:57,575 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 06:21:57,575 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 06:21:57,576 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 06:21:57,576 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 06:21:57,576 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-12-14 06:21:57,577 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 06:21:57,578 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 06:21:57,578 WARN L623 FunctionHandler]: Unknown extern function __pci_register_driver [2022-12-14 06:21:57,579 WARN L623 FunctionHandler]: Unknown extern function pci_unregister_driver [2022-12-14 06:21:57,645 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-14 06:21:57,645 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-14 06:21:57,657 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-14 06:21:58,324 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_5586b495-ef76-4584-845b-d6faf868cd6d/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2022-12-14 06:21:58,328 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_5586b495-ef76-4584-845b-d6faf868cd6d/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2022-12-14 06:21:58,329 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_5586b495-ef76-4584-845b-d6faf868cd6d/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2022-12-14 06:21:58,329 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_5586b495-ef76-4584-845b-d6faf868cd6d/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2022-12-14 06:21:58,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:21:58,393 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:21:58,490 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-12-14 06:21:58,490 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-12-14 06:21:58,490 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-14 06:21:58,491 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-14 06:21:58,493 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 06:21:58,493 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 06:21:58,493 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 06:21:58,494 WARN L623 FunctionHandler]: Unknown extern function __copy_from_user_overflow [2022-12-14 06:21:58,494 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 06:21:58,494 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 06:21:58,495 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 06:21:58,495 WARN L623 FunctionHandler]: Unknown extern function __copy_to_user_overflow [2022-12-14 06:21:58,499 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-14 06:21:58,501 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-14 06:21:58,501 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-12-14 06:21:58,502 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-12-14 06:21:58,505 WARN L623 FunctionHandler]: Unknown extern function debug_dma_alloc_coherent [2022-12-14 06:21:58,506 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 06:21:58,507 WARN L623 FunctionHandler]: Unknown extern function debug_dma_free_coherent [2022-12-14 06:21:58,510 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 06:21:58,517 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-14 06:21:58,517 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-12-14 06:21:58,518 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-14 06:21:58,519 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-14 06:21:58,519 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 06:21:58,520 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,521 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_irq [2022-12-14 06:21:58,521 WARN L623 FunctionHandler]: Unknown extern function pci_bus_read_config_byte [2022-12-14 06:21:58,524 WARN L623 FunctionHandler]: Unknown extern function pci_bus_read_config_word [2022-12-14 06:21:58,526 WARN L623 FunctionHandler]: Unknown extern function pci_bus_write_config_byte [2022-12-14 06:21:58,529 WARN L623 FunctionHandler]: Unknown extern function pci_bus_write_config_word [2022-12-14 06:21:58,532 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-12-14 06:21:58,539 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,539 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,540 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,540 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,540 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,540 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,541 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,541 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,541 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,541 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,542 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,543 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,543 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,543 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,544 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 06:21:58,544 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-14 06:21:58,545 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:21:58,548 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,549 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,553 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 06:21:58,553 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,554 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,554 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,554 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,555 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,556 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,556 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,556 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,557 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,557 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,557 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,558 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,561 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,561 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,562 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,564 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,568 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,568 WARN L623 FunctionHandler]: Unknown extern function synchronize_irq [2022-12-14 06:21:58,570 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,574 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,574 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-12-14 06:21:58,575 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-14 06:21:58,583 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,600 WARN L623 FunctionHandler]: Unknown extern function crc32_le [2022-12-14 06:21:58,606 WARN L623 FunctionHandler]: Unknown extern function pci_enable_device [2022-12-14 06:21:58,608 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-12-14 06:21:58,608 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-14 06:21:58,609 WARN L623 FunctionHandler]: Unknown extern function pci_disable_device [2022-12-14 06:21:58,609 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-14 06:21:58,610 WARN L623 FunctionHandler]: Unknown extern function pci_disable_device [2022-12-14 06:21:58,653 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,656 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,658 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,659 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,659 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,659 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,660 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,660 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,661 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,661 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,675 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 06:21:58,676 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 06:21:58,685 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,687 WARN L623 FunctionHandler]: Unknown extern function strncpy [2022-12-14 06:21:58,688 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:58,697 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,698 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,698 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,699 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,699 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,702 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,702 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,720 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,721 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,721 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,721 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,722 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,723 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,723 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,727 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,728 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,728 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,728 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,728 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,728 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,729 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,729 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,729 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,729 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,732 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,733 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:21:58,734 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:58,734 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:58,735 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:58,735 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:58,736 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:58,736 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:58,736 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:58,737 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:58,737 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:58,738 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:58,738 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:58,739 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:58,739 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:58,739 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-14 06:21:58,740 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,741 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,741 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,741 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,741 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,741 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,742 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,742 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,742 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,743 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,743 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,744 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,744 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,744 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,745 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,745 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,745 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,746 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,746 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,747 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,747 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,747 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,748 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,748 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,749 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,749 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,750 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,761 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,761 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,764 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,764 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,764 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,765 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,765 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,765 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,765 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,765 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,766 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,766 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,767 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,767 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,769 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-14 06:21:58,770 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-14 06:21:58,771 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:21:58,771 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-14 06:21:58,772 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-14 06:21:58,773 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-14 06:21:58,780 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-14 06:21:58,780 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-14 06:21:58,780 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-14 06:21:58,781 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-14 06:21:58,781 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-14 06:21:58,781 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-14 06:21:58,782 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-14 06:21:58,782 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-14 06:21:58,782 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-14 06:21:58,783 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-14 06:21:58,783 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-14 06:21:58,783 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-14 06:21:58,784 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 06:21:58,785 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 06:21:58,785 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 06:21:58,792 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-12-14 06:21:58,794 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-12-14 06:21:58,798 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 06:21:58,799 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 06:21:58,801 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-12-14 06:21:58,802 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 06:21:58,802 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 06:21:58,803 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 06:21:58,803 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-14 06:21:58,803 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-12-14 06:21:58,803 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 06:21:58,804 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 06:21:58,804 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 06:21:58,804 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 06:21:58,804 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-12-14 06:21:58,805 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 06:21:58,805 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 06:21:58,805 WARN L623 FunctionHandler]: Unknown extern function __pci_register_driver [2022-12-14 06:21:58,806 WARN L623 FunctionHandler]: Unknown extern function pci_unregister_driver [2022-12-14 06:21:58,808 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-14 06:21:58,808 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-14 06:21:58,808 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-14 06:21:58,827 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_5586b495-ef76-4584-845b-d6faf868cd6d/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2022-12-14 06:21:58,827 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_5586b495-ef76-4584-845b-d6faf868cd6d/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2022-12-14 06:21:58,828 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_5586b495-ef76-4584-845b-d6faf868cd6d/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2022-12-14 06:21:58,828 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_5586b495-ef76-4584-845b-d6faf868cd6d/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2022-12-14 06:21:58,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:21:59,058 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:21:59,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:21:59 WrapperNode [2022-12-14 06:21:59,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:21:59,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:21:59,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:21:59,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:21:59,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:21:59" (1/1) ... [2022-12-14 06:21:59,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:21:59" (1/1) ... [2022-12-14 06:21:59,344 INFO L138 Inliner]: procedures = 526, calls = 4210, calls flagged for inlining = 232, calls inlined = 215, statements flattened = 8627 [2022-12-14 06:21:59,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:21:59,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:21:59,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:21:59,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:21:59,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:21:59" (1/1) ... [2022-12-14 06:21:59,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:21:59" (1/1) ... [2022-12-14 06:21:59,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:21:59" (1/1) ... [2022-12-14 06:21:59,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:21:59" (1/1) ... [2022-12-14 06:21:59,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:21:59" (1/1) ... [2022-12-14 06:21:59,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:21:59" (1/1) ... [2022-12-14 06:21:59,631 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:21:59" (1/1) ... [2022-12-14 06:21:59,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:21:59" (1/1) ... [2022-12-14 06:21:59,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:21:59,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:21:59,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:21:59,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:21:59,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:21:59" (1/1) ... [2022-12-14 06:21:59,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:21:59,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:21:59,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:21:59,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:21:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure disable_ast [2022-12-14 06:21:59,746 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_ast [2022-12-14 06:21:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-12-14 06:21:59,746 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-12-14 06:21:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-12-14 06:21:59,747 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-12-14 06:21:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-14 06:21:59,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-14 06:21:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2022-12-14 06:21:59,747 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2022-12-14 06:21:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_put_cache [2022-12-14 06:21:59,747 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_put_cache [2022-12-14 06:21:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-12-14 06:21:59,747 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-12-14 06:21:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_de4x5_private [2022-12-14 06:21:59,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_de4x5_private [2022-12-14 06:21:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-12-14 06:21:59,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-12-14 06:21:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_de4x5_private [2022-12-14 06:21:59,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_de4x5_private [2022-12-14 06:21:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_mii [2022-12-14 06:21:59,748 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_mii [2022-12-14 06:21:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_switch_mac_port [2022-12-14 06:21:59,748 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_switch_mac_port [2022-12-14 06:21:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-12-14 06:21:59,748 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-12-14 06:21:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure srom_latch [2022-12-14 06:21:59,748 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_latch [2022-12-14 06:21:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2022-12-14 06:21:59,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2022-12-14 06:21:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-12-14 06:21:59,748 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-12-14 06:21:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure build_setup_frame [2022-12-14 06:21:59,748 INFO L138 BoogieDeclarations]: Found implementation of procedure build_setup_frame [2022-12-14 06:21:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2022-12-14 06:21:59,748 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2022-12-14 06:21:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2022-12-14 06:21:59,749 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2022-12-14 06:21:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-12-14 06:21:59,749 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-12-14 06:21:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure DevicePresent [2022-12-14 06:21:59,749 INFO L138 BoogieDeclarations]: Found implementation of procedure DevicePresent [2022-12-14 06:21:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-12-14 06:21:59,749 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-12-14 06:21:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-12-14 06:21:59,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-12-14 06:21:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2022-12-14 06:21:59,749 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2022-12-14 06:21:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2022-12-14 06:21:59,749 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2022-12-14 06:21:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-12-14 06:21:59,749 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-12-14 06:21:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-12-14 06:21:59,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-12-14 06:21:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-12-14 06:21:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_sw_reset [2022-12-14 06:21:59,750 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_sw_reset [2022-12-14 06:21:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:21:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-12-14 06:21:59,750 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-12-14 06:21:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-12-14 06:21:59,750 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-12-14 06:21:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-12-14 06:21:59,750 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-12-14 06:21:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure is_spd_100 [2022-12-14 06:21:59,750 INFO L138 BoogieDeclarations]: Found implementation of procedure is_spd_100 [2022-12-14 06:21:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-12-14 06:21:59,750 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-12-14 06:21:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-14 06:21:59,751 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-12-14 06:21:59,751 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-12-14 06:21:59,751 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_mii [2022-12-14 06:21:59,751 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_mii [2022-12-14 06:21:59,751 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_rx_buffs [2022-12-14 06:21:59,751 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_rx_buffs [2022-12-14 06:21:59,751 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-12-14 06:21:59,751 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-12-14 06:21:59,751 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-12-14 06:21:59,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-12-14 06:21:59,751 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-12-14 06:21:59,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-12-14 06:21:59,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 06:21:59,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-12-14 06:21:59,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-12-14 06:21:59,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 06:21:59,751 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-12-14 06:21:59,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-12-14 06:21:59,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-12-14 06:21:59,752 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-12-14 06:21:59,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-12-14 06:21:59,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-12-14 06:21:59,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-12-14 06:21:59,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-12-14 06:21:59,752 INFO L130 BoogieDeclarations]: Found specification of procedure ping_media [2022-12-14 06:21:59,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ping_media [2022-12-14 06:21:59,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-12-14 06:21:59,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-12-14 06:21:59,752 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2022-12-14 06:21:59,752 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2022-12-14 06:21:59,752 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-12-14 06:21:59,752 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-12-14 06:21:59,752 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-12-14 06:21:59,753 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-12-14 06:21:59,753 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_tx [2022-12-14 06:21:59,753 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_tx [2022-12-14 06:21:59,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-12-14 06:21:59,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-12-14 06:21:59,753 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-12-14 06:21:59,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-12-14 06:21:59,753 INFO L130 BoogieDeclarations]: Found specification of procedure srom_rd [2022-12-14 06:21:59,753 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_rd [2022-12-14 06:21:59,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 06:21:59,753 INFO L130 BoogieDeclarations]: Found specification of procedure SetMulticastFilter [2022-12-14 06:21:59,753 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMulticastFilter [2022-12-14 06:21:59,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:21:59,753 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ioctl [2022-12-14 06:21:59,753 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ioctl [2022-12-14 06:21:59,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-12-14 06:21:59,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-12-14 06:21:59,754 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-12-14 06:21:59,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-12-14 06:21:59,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 06:21:59,754 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-12-14 06:21:59,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-12-14 06:21:59,754 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_srom [2022-12-14 06:21:59,754 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_srom [2022-12-14 06:21:59,754 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-12-14 06:21:59,754 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-12-14 06:21:59,754 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-12-14 06:21:59,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-12-14 06:21:59,754 INFO L130 BoogieDeclarations]: Found specification of procedure mii_swap [2022-12-14 06:21:59,754 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_swap [2022-12-14 06:21:59,754 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_reset_phy [2022-12-14 06:21:59,754 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_reset_phy [2022-12-14 06:21:59,754 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_putb_cache [2022-12-14 06:21:59,754 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_putb_cache [2022-12-14 06:21:59,755 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-12-14 06:21:59,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-12-14 06:21:59,755 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2022-12-14 06:21:59,755 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2022-12-14 06:21:59,755 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-12-14 06:21:59,755 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-12-14 06:21:59,755 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_stats [2022-12-14 06:21:59,755 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_stats [2022-12-14 06:21:59,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-12-14 06:21:59,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-12-14 06:21:59,755 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-12-14 06:21:59,755 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-12-14 06:21:59,755 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init_connection [2022-12-14 06:21:59,755 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init_connection [2022-12-14 06:21:59,755 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wr [2022-12-14 06:21:59,755 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wr [2022-12-14 06:21:59,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:21:59,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:21:59,756 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_state [2022-12-14 06:21:59,756 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_state [2022-12-14 06:21:59,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-12-14 06:21:59,756 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-12-14 06:21:59,756 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2022-12-14 06:21:59,756 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2022-12-14 06:21:59,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-14 06:21:59,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-14 06:21:59,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-12-14 06:21:59,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-12-14 06:21:59,756 INFO L130 BoogieDeclarations]: Found specification of procedure reset_init_sia [2022-12-14 06:21:59,756 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_init_sia [2022-12-14 06:21:59,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-12-14 06:21:59,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-12-14 06:21:59,756 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-12-14 06:21:59,756 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-12-14 06:21:59,757 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_alloc_rx_buff [2022-12-14 06:21:59,757 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_alloc_rx_buff [2022-12-14 06:21:59,757 INFO L130 BoogieDeclarations]: Found specification of procedure test_for_100Mb [2022-12-14 06:21:59,757 INFO L138 BoogieDeclarations]: Found implementation of procedure test_for_100Mb [2022-12-14 06:21:59,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-12-14 06:21:59,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-12-14 06:21:59,757 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2022-12-14 06:21:59,757 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2022-12-14 06:21:59,757 INFO L130 BoogieDeclarations]: Found specification of procedure load_packet [2022-12-14 06:21:59,757 INFO L138 BoogieDeclarations]: Found implementation of procedure load_packet [2022-12-14 06:21:59,757 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2022-12-14 06:21:59,757 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2022-12-14 06:21:59,757 INFO L130 BoogieDeclarations]: Found specification of procedure is_100_up [2022-12-14 06:21:59,757 INFO L138 BoogieDeclarations]: Found implementation of procedure is_100_up [2022-12-14 06:21:59,757 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2022-12-14 06:21:59,757 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2022-12-14 06:21:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 06:21:59,758 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 06:21:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ta [2022-12-14 06:21:59,758 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ta [2022-12-14 06:21:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-12-14 06:21:59,758 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-12-14 06:21:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2022-12-14 06:21:59,758 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2022-12-14 06:21:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-12-14 06:21:59,758 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-12-14 06:21:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure test_mii_reg [2022-12-14 06:21:59,758 INFO L138 BoogieDeclarations]: Found implementation of procedure test_mii_reg [2022-12-14 06:21:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_cache_state [2022-12-14 06:21:59,758 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_cache_state [2022-12-14 06:21:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-12-14 06:21:59,758 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-12-14 06:21:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_pci_remove [2022-12-14 06:21:59,759 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_pci_remove [2022-12-14 06:21:59,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:21:59,759 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_media [2022-12-14 06:21:59,759 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_media [2022-12-14 06:21:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2022-12-14 06:21:59,784 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2022-12-14 06:21:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2022-12-14 06:21:59,784 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2022-12-14 06:21:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure mii_rd [2022-12-14 06:21:59,784 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_rd [2022-12-14 06:21:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 06:21:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2022-12-14 06:21:59,785 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2022-12-14 06:21:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2022-12-14 06:21:59,785 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2022-12-14 06:21:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2022-12-14 06:21:59,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2022-12-14 06:21:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 06:21:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-12-14 06:21:59,785 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-12-14 06:21:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure is_10_up [2022-12-14 06:21:59,785 INFO L138 BoogieDeclarations]: Found implementation of procedure is_10_up [2022-12-14 06:21:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-12-14 06:21:59,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-12-14 06:21:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-12-14 06:21:59,786 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-12-14 06:21:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure is_anc_capable [2022-12-14 06:21:59,786 INFO L138 BoogieDeclarations]: Found implementation of procedure is_anc_capable [2022-12-14 06:21:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2022-12-14 06:21:59,786 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2022-12-14 06:21:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-12-14 06:21:59,786 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-12-14 06:21:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-12-14 06:21:59,786 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-12-14 06:21:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-12-14 06:21:59,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-12-14 06:21:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2022-12-14 06:21:59,787 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2022-12-14 06:21:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-12-14 06:21:59,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-12-14 06:21:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-12-14 06:21:59,787 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-12-14 06:21:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_queue_pkt [2022-12-14 06:21:59,787 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_queue_pkt [2022-12-14 06:21:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure test_media [2022-12-14 06:21:59,787 INFO L138 BoogieDeclarations]: Found implementation of procedure test_media [2022-12-14 06:21:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buffs [2022-12-14 06:21:59,787 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buffs [2022-12-14 06:21:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2022-12-14 06:21:59,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2022-12-14 06:21:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-12-14 06:21:59,788 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-12-14 06:21:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-12-14 06:21:59,788 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-12-14 06:21:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-12-14 06:21:59,788 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-12-14 06:21:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2022-12-14 06:21:59,788 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2022-12-14 06:21:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-12-14 06:21:59,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-12-14 06:21:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_73 [2022-12-14 06:21:59,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_73 [2022-12-14 06:21:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_infoleaf [2022-12-14 06:21:59,789 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_infoleaf [2022-12-14 06:21:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 06:21:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure srom_exec [2022-12-14 06:21:59,789 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_exec [2022-12-14 06:21:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-14 06:21:59,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-14 06:21:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure gep_wr [2022-12-14 06:21:59,790 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_wr [2022-12-14 06:21:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-12-14 06:21:59,790 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-12-14 06:21:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_srom [2022-12-14 06:21:59,790 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_srom [2022-12-14 06:21:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-12-14 06:21:59,790 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-12-14 06:21:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_cache [2022-12-14 06:21:59,790 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_cache [2022-12-14 06:21:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2022-12-14 06:21:59,791 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2022-12-14 06:21:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_mii [2022-12-14 06:21:59,791 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_mii [2022-12-14 06:21:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2022-12-14 06:21:59,791 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2022-12-14 06:21:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-12-14 06:21:59,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-12-14 06:21:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure gep_rd [2022-12-14 06:21:59,791 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_rd [2022-12-14 06:21:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure mii_address [2022-12-14 06:21:59,791 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_address [2022-12-14 06:21:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buff [2022-12-14 06:21:59,791 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buff [2022-12-14 06:21:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_setup_intr [2022-12-14 06:21:59,792 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_setup_intr [2022-12-14 06:21:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_save_skbs [2022-12-14 06:21:59,792 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_save_skbs [2022-12-14 06:21:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2022-12-14 06:21:59,792 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2022-12-14 06:21:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-12-14 06:21:59,792 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-12-14 06:21:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure srom_map_media [2022-12-14 06:21:59,792 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_map_media [2022-12-14 06:21:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_strncmp [2022-12-14 06:21:59,792 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_strncmp [2022-12-14 06:21:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-12-14 06:21:59,793 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-12-14 06:21:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_close [2022-12-14 06:21:59,793 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_close [2022-12-14 06:21:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure yawn [2022-12-14 06:21:59,793 INFO L138 BoogieDeclarations]: Found implementation of procedure yawn [2022-12-14 06:21:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wdata [2022-12-14 06:21:59,793 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wdata [2022-12-14 06:21:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:21:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-12-14 06:21:59,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-12-14 06:21:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-12-14 06:22:00,589 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:22:00,592 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:22:00,952 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-12-14 06:22:15,736 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:22:18,457 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:22:18,457 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-12-14 06:22:18,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:22:18 BoogieIcfgContainer [2022-12-14 06:22:18,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:22:18,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:22:18,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:22:18,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:22:18,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:21:54" (1/3) ... [2022-12-14 06:22:18,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc4a451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:22:18, skipping insertion in model container [2022-12-14 06:22:18,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:21:59" (2/3) ... [2022-12-14 06:22:18,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc4a451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:22:18, skipping insertion in model container [2022-12-14 06:22:18,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:22:18" (3/3) ... [2022-12-14 06:22:18,468 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-12-14 06:22:18,481 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:22:18,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-14 06:22:18,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:22:18,558 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;@5b104d64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:22:18,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-14 06:22:18,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 2945 states, 1835 states have (on average 1.3416893732970028) internal successors, (2462), 1912 states have internal predecessors, (2462), 972 states have call successors, (972), 151 states have call predecessors, (972), 150 states have return successors, (963), 949 states have call predecessors, (963), 963 states have call successors, (963) [2022-12-14 06:22:18,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 06:22:18,575 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:22:18,576 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 06:22:18,576 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 06:22:18,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:22:18,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1863060442, now seen corresponding path program 1 times [2022-12-14 06:22:18,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:22:18,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910539933] [2022-12-14 06:22:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:22:18,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:22:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:22:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 06:22:19,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:22:19,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910539933] [2022-12-14 06:22:19,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910539933] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:22:19,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:22:19,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:22:19,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156095861] [2022-12-14 06:22:19,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:22:19,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:22:19,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:22:19,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:22:19,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:22:19,512 INFO L87 Difference]: Start difference. First operand has 2945 states, 1835 states have (on average 1.3416893732970028) internal successors, (2462), 1912 states have internal predecessors, (2462), 972 states have call successors, (972), 151 states have call predecessors, (972), 150 states have return successors, (963), 949 states have call predecessors, (963), 963 states have call successors, (963) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 06:22:21,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:22:26,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:22:26,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:22:26,440 INFO L93 Difference]: Finished difference Result 5824 states and 8875 transitions. [2022-12-14 06:22:26,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:22:26,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2022-12-14 06:22:26,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:22:26,473 INFO L225 Difference]: With dead ends: 5824 [2022-12-14 06:22:26,473 INFO L226 Difference]: Without dead ends: 2885 [2022-12-14 06:22:26,511 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 06:22:26,514 INFO L413 NwaCegarLoop]: 3806 mSDtfsCounter, 4277 mSDsluCounter, 7598 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4290 SdHoareTripleChecker+Valid, 11404 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:22:26,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4290 Valid, 11404 Invalid, 1477 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1475 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-12-14 06:22:26,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2022-12-14 06:22:26,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2885. [2022-12-14 06:22:26,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2885 states, 1785 states have (on average 1.3355742296918767) internal successors, (2384), 1843 states have internal predecessors, (2384), 947 states have call successors, (947), 151 states have call predecessors, (947), 150 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-12-14 06:22:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2885 states to 2885 states and 4275 transitions. [2022-12-14 06:22:26,718 INFO L78 Accepts]: Start accepts. Automaton has 2885 states and 4275 transitions. Word has length 35 [2022-12-14 06:22:26,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:22:26,718 INFO L495 AbstractCegarLoop]: Abstraction has 2885 states and 4275 transitions. [2022-12-14 06:22:26,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 06:22:26,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2885 states and 4275 transitions. [2022-12-14 06:22:26,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-14 06:22:26,720 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:22:26,720 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 06:22:26,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:22:26,720 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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 06:22:26,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:22:26,721 INFO L85 PathProgramCache]: Analyzing trace with hash -925362672, now seen corresponding path program 1 times [2022-12-14 06:22:26,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:22:26,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234954775] [2022-12-14 06:22:26,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:22:26,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:22:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:22:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 06:22:27,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:22:27,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234954775] [2022-12-14 06:22:27,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234954775] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:22:27,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:22:27,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:22:27,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777840648] [2022-12-14 06:22:27,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:22:27,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:22:27,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:22:27,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:22:27,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:22:27,070 INFO L87 Difference]: Start difference. First operand 2885 states and 4275 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 06:22:29,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:22:33,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:22:33,863 INFO L93 Difference]: Finished difference Result 2891 states and 4280 transitions. [2022-12-14 06:22:33,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:22:33,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 40 [2022-12-14 06:22:33,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:22:33,876 INFO L225 Difference]: With dead ends: 2891 [2022-12-14 06:22:33,876 INFO L226 Difference]: Without dead ends: 2889 [2022-12-14 06:22:33,878 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 06:22:33,879 INFO L413 NwaCegarLoop]: 3786 mSDtfsCounter, 4250 mSDsluCounter, 7552 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4261 SdHoareTripleChecker+Valid, 11338 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:22:33,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4261 Valid, 11338 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1475 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-12-14 06:22:33,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2022-12-14 06:22:33,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 2889. [2022-12-14 06:22:33,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2889 states, 1788 states have (on average 1.3350111856823266) internal successors, (2387), 1846 states have internal predecessors, (2387), 947 states have call successors, (947), 152 states have call predecessors, (947), 151 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-12-14 06:22:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 4278 transitions. [2022-12-14 06:22:33,995 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 4278 transitions. Word has length 40 [2022-12-14 06:22:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:22:33,995 INFO L495 AbstractCegarLoop]: Abstraction has 2889 states and 4278 transitions. [2022-12-14 06:22:33,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 06:22:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 4278 transitions. [2022-12-14 06:22:33,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-14 06:22:33,996 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:22:33,996 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-12-14 06:22:33,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:22:33,997 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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 06:22:33,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:22:33,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1093947866, now seen corresponding path program 1 times [2022-12-14 06:22:33,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:22:33,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860291535] [2022-12-14 06:22:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:22:33,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:22:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:22:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 06:22:34,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:22:34,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860291535] [2022-12-14 06:22:34,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860291535] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:22:34,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:22:34,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:22:34,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524393081] [2022-12-14 06:22:34,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:22:34,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:22:34,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:22:34,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:22:34,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:22:34,324 INFO L87 Difference]: Start difference. First operand 2889 states and 4278 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 06:22:36,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:22:40,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:22:40,462 INFO L93 Difference]: Finished difference Result 2895 states and 4283 transitions. [2022-12-14 06:22:40,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:22:40,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2022-12-14 06:22:40,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:22:40,475 INFO L225 Difference]: With dead ends: 2895 [2022-12-14 06:22:40,475 INFO L226 Difference]: Without dead ends: 2893 [2022-12-14 06:22:40,476 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 06:22:40,477 INFO L413 NwaCegarLoop]: 3786 mSDtfsCounter, 4250 mSDsluCounter, 7552 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4260 SdHoareTripleChecker+Valid, 11338 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:22:40,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4260 Valid, 11338 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1475 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-12-14 06:22:40,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2022-12-14 06:22:40,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2893. [2022-12-14 06:22:40,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 1791 states have (on average 1.3344500279173646) internal successors, (2390), 1849 states have internal predecessors, (2390), 947 states have call successors, (947), 153 states have call predecessors, (947), 152 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-12-14 06:22:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 4281 transitions. [2022-12-14 06:22:40,599 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 4281 transitions. Word has length 45 [2022-12-14 06:22:40,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:22:40,600 INFO L495 AbstractCegarLoop]: Abstraction has 2893 states and 4281 transitions. [2022-12-14 06:22:40,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 06:22:40,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 4281 transitions. [2022-12-14 06:22:40,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 06:22:40,601 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:22:40,601 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2022-12-14 06:22:40,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 06:22:40,602 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:22:40,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:22:40,602 INFO L85 PathProgramCache]: Analyzing trace with hash 251579280, now seen corresponding path program 1 times [2022-12-14 06:22:40,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:22:40,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352733198] [2022-12-14 06:22:40,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:22:40,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:22:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:22:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 06:22:41,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:22:41,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352733198] [2022-12-14 06:22:41,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352733198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:22:41,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:22:41,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:22:41,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101561189] [2022-12-14 06:22:41,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:22:41,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:22:41,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:22:41,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:22:41,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:22:41,012 INFO L87 Difference]: Start difference. First operand 2893 states and 4281 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 06:22:43,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:22:46,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:22:46,776 INFO L93 Difference]: Finished difference Result 2899 states and 4286 transitions. [2022-12-14 06:22:46,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:22:46,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2022-12-14 06:22:46,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:22:46,787 INFO L225 Difference]: With dead ends: 2899 [2022-12-14 06:22:46,787 INFO L226 Difference]: Without dead ends: 2897 [2022-12-14 06:22:46,789 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 06:22:46,789 INFO L413 NwaCegarLoop]: 3786 mSDtfsCounter, 4250 mSDsluCounter, 7552 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4259 SdHoareTripleChecker+Valid, 11338 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:22:46,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4259 Valid, 11338 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1475 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-12-14 06:22:46,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2022-12-14 06:22:46,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2897. [2022-12-14 06:22:46,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 1794 states have (on average 1.3338907469342252) internal successors, (2393), 1852 states have internal predecessors, (2393), 947 states have call successors, (947), 154 states have call predecessors, (947), 153 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-12-14 06:22:46,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 4284 transitions. [2022-12-14 06:22:46,910 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 4284 transitions. Word has length 50 [2022-12-14 06:22:46,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:22:46,910 INFO L495 AbstractCegarLoop]: Abstraction has 2897 states and 4284 transitions. [2022-12-14 06:22:46,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-14 06:22:46,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 4284 transitions. [2022-12-14 06:22:46,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 06:22:46,911 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:22:46,911 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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] [2022-12-14 06:22:46,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 06:22:46,911 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 06:22:46,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:22:46,912 INFO L85 PathProgramCache]: Analyzing trace with hash -378324598, now seen corresponding path program 1 times [2022-12-14 06:22:46,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:22:46,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312988828] [2022-12-14 06:22:46,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:22:46,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:22:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:22:47,196 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 06:22:47,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:22:47,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312988828] [2022-12-14 06:22:47,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312988828] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:22:47,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:22:47,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:22:47,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074744759] [2022-12-14 06:22:47,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:22:47,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:22:47,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:22:47,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:22:47,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:22:47,197 INFO L87 Difference]: Start difference. First operand 2897 states and 4284 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 06:22:49,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:22:52,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:22:52,990 INFO L93 Difference]: Finished difference Result 2903 states and 4289 transitions. [2022-12-14 06:22:52,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:22:52,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 56 [2022-12-14 06:22:52,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:22:53,000 INFO L225 Difference]: With dead ends: 2903 [2022-12-14 06:22:53,001 INFO L226 Difference]: Without dead ends: 2901 [2022-12-14 06:22:53,002 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 06:22:53,003 INFO L413 NwaCegarLoop]: 3786 mSDtfsCounter, 4249 mSDsluCounter, 7552 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4257 SdHoareTripleChecker+Valid, 11338 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:22:53,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4257 Valid, 11338 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1475 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-12-14 06:22:53,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2022-12-14 06:22:53,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 2901. [2022-12-14 06:22:53,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2901 states, 1797 states have (on average 1.3333333333333333) internal successors, (2396), 1855 states have internal predecessors, (2396), 947 states have call successors, (947), 155 states have call predecessors, (947), 154 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-12-14 06:22:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 4287 transitions. [2022-12-14 06:22:53,148 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 4287 transitions. Word has length 56 [2022-12-14 06:22:53,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:22:53,148 INFO L495 AbstractCegarLoop]: Abstraction has 2901 states and 4287 transitions. [2022-12-14 06:22:53,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 06:22:53,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 4287 transitions. [2022-12-14 06:22:53,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 06:22:53,150 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:22:53,150 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 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] [2022-12-14 06:22:53,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 06:22:53,150 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 06:22:53,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:22:53,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1529720560, now seen corresponding path program 1 times [2022-12-14 06:22:53,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:22:53,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747138478] [2022-12-14 06:22:53,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:22:53,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:22:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:22:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-14 06:22:53,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:22:53,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747138478] [2022-12-14 06:22:53,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747138478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:22:53,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:22:53,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:22:53,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894870573] [2022-12-14 06:22:53,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:22:53,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:22:53,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:22:53,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:22:53,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:22:53,503 INFO L87 Difference]: Start difference. First operand 2901 states and 4287 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 06:22:55,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:22:59,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:22:59,622 INFO L93 Difference]: Finished difference Result 2907 states and 4292 transitions. [2022-12-14 06:22:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:22:59,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 60 [2022-12-14 06:22:59,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:22:59,633 INFO L225 Difference]: With dead ends: 2907 [2022-12-14 06:22:59,633 INFO L226 Difference]: Without dead ends: 2905 [2022-12-14 06:22:59,634 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 06:22:59,635 INFO L413 NwaCegarLoop]: 3786 mSDtfsCounter, 4250 mSDsluCounter, 7552 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4257 SdHoareTripleChecker+Valid, 11338 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:22:59,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4257 Valid, 11338 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1475 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-12-14 06:22:59,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2022-12-14 06:22:59,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 2905. [2022-12-14 06:22:59,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2905 states, 1800 states have (on average 1.3327777777777778) internal successors, (2399), 1858 states have internal predecessors, (2399), 947 states have call successors, (947), 156 states have call predecessors, (947), 155 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-12-14 06:22:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 4290 transitions. [2022-12-14 06:22:59,759 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 4290 transitions. Word has length 60 [2022-12-14 06:22:59,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:22:59,759 INFO L495 AbstractCegarLoop]: Abstraction has 2905 states and 4290 transitions. [2022-12-14 06:22:59,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 06:22:59,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 4290 transitions. [2022-12-14 06:22:59,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 06:22:59,760 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:22:59,760 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 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] [2022-12-14 06:22:59,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 06:22:59,760 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:22:59,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:22:59,761 INFO L85 PathProgramCache]: Analyzing trace with hash -688789878, now seen corresponding path program 1 times [2022-12-14 06:22:59,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:22:59,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934008956] [2022-12-14 06:22:59,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:22:59,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:22:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:23:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-12-14 06:23:00,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:23:00,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934008956] [2022-12-14 06:23:00,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934008956] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:23:00,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:23:00,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:23:00,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321228288] [2022-12-14 06:23:00,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:23:00,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:23:00,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:23:00,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:23:00,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:23:00,015 INFO L87 Difference]: Start difference. First operand 2905 states and 4290 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 06:23:02,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:23:06,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:23:06,091 INFO L93 Difference]: Finished difference Result 2911 states and 4295 transitions. [2022-12-14 06:23:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:23:06,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2022-12-14 06:23:06,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:23:06,103 INFO L225 Difference]: With dead ends: 2911 [2022-12-14 06:23:06,104 INFO L226 Difference]: Without dead ends: 2909 [2022-12-14 06:23:06,104 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 06:23:06,105 INFO L413 NwaCegarLoop]: 3786 mSDtfsCounter, 4249 mSDsluCounter, 7552 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4255 SdHoareTripleChecker+Valid, 11338 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:23:06,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4255 Valid, 11338 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1475 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-12-14 06:23:06,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2022-12-14 06:23:06,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 2909. [2022-12-14 06:23:06,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2909 states, 1803 states have (on average 1.3322240709927897) internal successors, (2402), 1861 states have internal predecessors, (2402), 947 states have call successors, (947), 157 states have call predecessors, (947), 156 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-12-14 06:23:06,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2909 states to 2909 states and 4293 transitions. [2022-12-14 06:23:06,232 INFO L78 Accepts]: Start accepts. Automaton has 2909 states and 4293 transitions. Word has length 66 [2022-12-14 06:23:06,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:23:06,232 INFO L495 AbstractCegarLoop]: Abstraction has 2909 states and 4293 transitions. [2022-12-14 06:23:06,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 06:23:06,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2909 states and 4293 transitions. [2022-12-14 06:23:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 06:23:06,233 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:23:06,234 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 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] [2022-12-14 06:23:06,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 06:23:06,234 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 06:23:06,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:23:06,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1494519980, now seen corresponding path program 1 times [2022-12-14 06:23:06,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:23:06,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041296300] [2022-12-14 06:23:06,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:23:06,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:23:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:23:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-12-14 06:23:06,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:23:06,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041296300] [2022-12-14 06:23:06,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041296300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:23:06,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:23:06,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:23:06,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756659012] [2022-12-14 06:23:06,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:23:06,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:23:06,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:23:06,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:23:06,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:23:06,482 INFO L87 Difference]: Start difference. First operand 2909 states and 4293 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 06:23:08,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:23:13,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:23:13,294 INFO L93 Difference]: Finished difference Result 3125 states and 4555 transitions. [2022-12-14 06:23:13,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:23:13,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 71 [2022-12-14 06:23:13,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:23:13,306 INFO L225 Difference]: With dead ends: 3125 [2022-12-14 06:23:13,307 INFO L226 Difference]: Without dead ends: 3123 [2022-12-14 06:23:13,308 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 06:23:13,308 INFO L413 NwaCegarLoop]: 3886 mSDtfsCounter, 4031 mSDsluCounter, 8159 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4036 SdHoareTripleChecker+Valid, 12045 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:23:13,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4036 Valid, 12045 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1552 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-12-14 06:23:13,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3123 states. [2022-12-14 06:23:13,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3123 to 3117. [2022-12-14 06:23:13,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3117 states, 1922 states have (on average 1.3241415192507804) internal successors, (2545), 1987 states have internal predecessors, (2545), 1003 states have call successors, (1003), 193 states have call predecessors, (1003), 189 states have return successors, (1001), 980 states have call predecessors, (1001), 1000 states have call successors, (1001) [2022-12-14 06:23:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 4549 transitions. [2022-12-14 06:23:13,508 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 4549 transitions. Word has length 71 [2022-12-14 06:23:13,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:23:13,508 INFO L495 AbstractCegarLoop]: Abstraction has 3117 states and 4549 transitions. [2022-12-14 06:23:13,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 06:23:13,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 4549 transitions. [2022-12-14 06:23:13,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 06:23:13,509 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:23:13,509 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 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] [2022-12-14 06:23:13,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 06:23:13,509 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 06:23:13,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:23:13,510 INFO L85 PathProgramCache]: Analyzing trace with hash 774767498, now seen corresponding path program 1 times [2022-12-14 06:23:13,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:23:13,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343731892] [2022-12-14 06:23:13,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:23:13,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:23:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:23:13,746 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-12-14 06:23:13,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:23:13,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343731892] [2022-12-14 06:23:13,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343731892] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:23:13,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:23:13,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:23:13,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315098554] [2022-12-14 06:23:13,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:23:13,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:23:13,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:23:13,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:23:13,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:23:13,748 INFO L87 Difference]: Start difference. First operand 3117 states and 4549 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 06:23:15,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:23:19,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:23:19,812 INFO L93 Difference]: Finished difference Result 3123 states and 4554 transitions. [2022-12-14 06:23:19,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:23:19,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2022-12-14 06:23:19,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:23:19,825 INFO L225 Difference]: With dead ends: 3123 [2022-12-14 06:23:19,825 INFO L226 Difference]: Without dead ends: 3121 [2022-12-14 06:23:19,826 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 06:23:19,827 INFO L413 NwaCegarLoop]: 3786 mSDtfsCounter, 4249 mSDsluCounter, 7552 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4253 SdHoareTripleChecker+Valid, 11338 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-14 06:23:19,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4253 Valid, 11338 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1475 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-12-14 06:23:19,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2022-12-14 06:23:19,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 3121. [2022-12-14 06:23:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 1925 states have (on average 1.3236363636363637) internal successors, (2548), 1990 states have internal predecessors, (2548), 1003 states have call successors, (1003), 194 states have call predecessors, (1003), 190 states have return successors, (1001), 980 states have call predecessors, (1001), 1000 states have call successors, (1001) [2022-12-14 06:23:20,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 4552 transitions. [2022-12-14 06:23:20,000 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 4552 transitions. Word has length 76 [2022-12-14 06:23:20,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:23:20,001 INFO L495 AbstractCegarLoop]: Abstraction has 3121 states and 4552 transitions. [2022-12-14 06:23:20,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 06:23:20,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 4552 transitions. [2022-12-14 06:23:20,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 06:23:20,002 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:23:20,002 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 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] [2022-12-14 06:23:20,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 06:23:20,002 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 06:23:20,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:23:20,002 INFO L85 PathProgramCache]: Analyzing trace with hash -848311280, now seen corresponding path program 1 times [2022-12-14 06:23:20,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:23:20,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919246855] [2022-12-14 06:23:20,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:23:20,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:23:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:23:20,256 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-12-14 06:23:20,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:23:20,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919246855] [2022-12-14 06:23:20,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919246855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:23:20,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:23:20,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:23:20,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009066857] [2022-12-14 06:23:20,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:23:20,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:23:20,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:23:20,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:23:20,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:23:20,257 INFO L87 Difference]: Start difference. First operand 3121 states and 4552 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 06:23:22,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:23:24,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:23:26,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:23:30,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:23:30,215 INFO L93 Difference]: Finished difference Result 3127 states and 4557 transitions. [2022-12-14 06:23:30,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:23:30,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 80 [2022-12-14 06:23:30,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:23:30,230 INFO L225 Difference]: With dead ends: 3127 [2022-12-14 06:23:30,230 INFO L226 Difference]: Without dead ends: 3125 [2022-12-14 06:23:30,231 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 06:23:30,232 INFO L413 NwaCegarLoop]: 3786 mSDtfsCounter, 4250 mSDsluCounter, 7552 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4253 SdHoareTripleChecker+Valid, 11338 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-12-14 06:23:30,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4253 Valid, 11338 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1476 Invalid, 2 Unknown, 0 Unchecked, 9.7s Time] [2022-12-14 06:23:30,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2022-12-14 06:23:30,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3125. [2022-12-14 06:23:30,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 1928 states have (on average 1.3231327800829875) internal successors, (2551), 1993 states have internal predecessors, (2551), 1003 states have call successors, (1003), 195 states have call predecessors, (1003), 191 states have return successors, (1001), 980 states have call predecessors, (1001), 1000 states have call successors, (1001) [2022-12-14 06:23:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4555 transitions. [2022-12-14 06:23:30,402 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4555 transitions. Word has length 80 [2022-12-14 06:23:30,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:23:30,402 INFO L495 AbstractCegarLoop]: Abstraction has 3125 states and 4555 transitions. [2022-12-14 06:23:30,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 06:23:30,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4555 transitions. [2022-12-14 06:23:30,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-14 06:23:30,404 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:23:30,404 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 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] [2022-12-14 06:23:30,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 06:23:30,404 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 06:23:30,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:23:30,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1820428762, now seen corresponding path program 1 times [2022-12-14 06:23:30,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:23:30,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439278048] [2022-12-14 06:23:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:23:30,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:23:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:23:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-12-14 06:23:30,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:23:30,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439278048] [2022-12-14 06:23:30,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439278048] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:23:30,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:23:30,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:23:30,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840172422] [2022-12-14 06:23:30,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:23:30,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:23:30,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:23:30,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:23:30,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:23:30,655 INFO L87 Difference]: Start difference. First operand 3125 states and 4555 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 06:23:32,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:23:37,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:23:37,131 INFO L93 Difference]: Finished difference Result 3131 states and 4560 transitions. [2022-12-14 06:23:37,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:23:37,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 85 [2022-12-14 06:23:37,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:23:37,139 INFO L225 Difference]: With dead ends: 3131 [2022-12-14 06:23:37,139 INFO L226 Difference]: Without dead ends: 3129 [2022-12-14 06:23:37,140 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 06:23:37,140 INFO L413 NwaCegarLoop]: 3786 mSDtfsCounter, 4250 mSDsluCounter, 7552 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4252 SdHoareTripleChecker+Valid, 11338 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:23:37,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4252 Valid, 11338 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1475 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-12-14 06:23:37,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2022-12-14 06:23:37,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3129. [2022-12-14 06:23:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3129 states, 1931 states have (on average 1.322630761263594) internal successors, (2554), 1996 states have internal predecessors, (2554), 1003 states have call successors, (1003), 196 states have call predecessors, (1003), 192 states have return successors, (1001), 980 states have call predecessors, (1001), 1000 states have call successors, (1001) [2022-12-14 06:23:37,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 4558 transitions. [2022-12-14 06:23:37,316 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 4558 transitions. Word has length 85 [2022-12-14 06:23:37,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:23:37,316 INFO L495 AbstractCegarLoop]: Abstraction has 3129 states and 4558 transitions. [2022-12-14 06:23:37,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 06:23:37,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 4558 transitions. [2022-12-14 06:23:37,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 06:23:37,317 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:23:37,317 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 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] [2022-12-14 06:23:37,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 06:23:37,318 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 06:23:37,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:23:37,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1548631664, now seen corresponding path program 1 times [2022-12-14 06:23:37,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:23:37,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606115084] [2022-12-14 06:23:37,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:23:37,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:23:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:23:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-12-14 06:23:37,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:23:37,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606115084] [2022-12-14 06:23:37,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606115084] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:23:37,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:23:37,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:23:37,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917261166] [2022-12-14 06:23:37,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:23:37,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:23:37,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:23:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:23:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:23:37,553 INFO L87 Difference]: Start difference. First operand 3129 states and 4558 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 06:23:39,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:23:43,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:23:43,464 INFO L93 Difference]: Finished difference Result 3135 states and 4563 transitions. [2022-12-14 06:23:43,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:23:43,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 90 [2022-12-14 06:23:43,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:23:43,474 INFO L225 Difference]: With dead ends: 3135 [2022-12-14 06:23:43,474 INFO L226 Difference]: Without dead ends: 3131 [2022-12-14 06:23:43,475 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 06:23:43,475 INFO L413 NwaCegarLoop]: 3786 mSDtfsCounter, 4250 mSDsluCounter, 7552 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4251 SdHoareTripleChecker+Valid, 11338 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:23:43,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4251 Valid, 11338 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1475 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-12-14 06:23:43,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2022-12-14 06:23:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3131. [2022-12-14 06:23:43,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 1933 states have (on average 1.321779617175375) internal successors, (2555), 1997 states have internal predecessors, (2555), 1003 states have call successors, (1003), 197 states have call predecessors, (1003), 192 states have return successors, (1001), 980 states have call predecessors, (1001), 1000 states have call successors, (1001) [2022-12-14 06:23:43,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 4559 transitions. [2022-12-14 06:23:43,687 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 4559 transitions. Word has length 90 [2022-12-14 06:23:43,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:23:43,687 INFO L495 AbstractCegarLoop]: Abstraction has 3131 states and 4559 transitions. [2022-12-14 06:23:43,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 06:23:43,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 4559 transitions. [2022-12-14 06:23:43,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 06:23:43,688 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:23:43,688 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 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] [2022-12-14 06:23:43,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 06:23:43,689 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 06:23:43,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:23:43,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1809063974, now seen corresponding path program 1 times [2022-12-14 06:23:43,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:23:43,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626698159] [2022-12-14 06:23:43,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:23:43,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:23:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:23:43,909 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-12-14 06:23:43,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:23:43,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626698159] [2022-12-14 06:23:43,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626698159] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:23:43,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:23:43,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:23:43,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15922952] [2022-12-14 06:23:43,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:23:43,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:23:43,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:23:43,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:23:43,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:23:43,911 INFO L87 Difference]: Start difference. First operand 3131 states and 4559 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 06:23:45,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:23:50,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:23:50,125 INFO L93 Difference]: Finished difference Result 3131 states and 4559 transitions. [2022-12-14 06:23:50,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:23:50,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 95 [2022-12-14 06:23:50,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:23:50,134 INFO L225 Difference]: With dead ends: 3131 [2022-12-14 06:23:50,134 INFO L226 Difference]: Without dead ends: 3049 [2022-12-14 06:23:50,136 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 06:23:50,136 INFO L413 NwaCegarLoop]: 3784 mSDtfsCounter, 4246 mSDsluCounter, 7551 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4246 SdHoareTripleChecker+Valid, 11335 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:23:50,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4246 Valid, 11335 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1470 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-12-14 06:23:50,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2022-12-14 06:23:50,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 3049. [2022-12-14 06:23:50,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3049 states, 1886 states have (on average 1.3282078472958643) internal successors, (2505), 1948 states have internal predecessors, (2505), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-12-14 06:23:50,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3049 states to 3049 states and 4468 transitions. [2022-12-14 06:23:50,369 INFO L78 Accepts]: Start accepts. Automaton has 3049 states and 4468 transitions. Word has length 95 [2022-12-14 06:23:50,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:23:50,369 INFO L495 AbstractCegarLoop]: Abstraction has 3049 states and 4468 transitions. [2022-12-14 06:23:50,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 06:23:50,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3049 states and 4468 transitions. [2022-12-14 06:23:50,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-14 06:23:50,373 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:23:50,374 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:50,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 06:23:50,374 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 06:23:50,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:23:50,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1681917140, now seen corresponding path program 1 times [2022-12-14 06:23:50,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:23:50,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190996272] [2022-12-14 06:23:50,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:23:50,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:23:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:23:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-12-14 06:23:50,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:23:50,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190996272] [2022-12-14 06:23:50,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190996272] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:23:50,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:23:50,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:23:50,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222809154] [2022-12-14 06:23:50,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:23:50,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:23:50,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:23:50,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:23:50,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:23:50,595 INFO L87 Difference]: Start difference. First operand 3049 states and 4468 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-14 06:23:52,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:23:54,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:23:54,535 INFO L93 Difference]: Finished difference Result 6083 states and 8913 transitions. [2022-12-14 06:23:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:23:54,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 143 [2022-12-14 06:23:54,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:23:54,545 INFO L225 Difference]: With dead ends: 6083 [2022-12-14 06:23:54,545 INFO L226 Difference]: Without dead ends: 3048 [2022-12-14 06:23:54,556 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 06:23:54,556 INFO L413 NwaCegarLoop]: 3729 mSDtfsCounter, 4196 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4196 SdHoareTripleChecker+Valid, 3729 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-14 06:23:54,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4196 Valid, 3729 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 482 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-12-14 06:23:54,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2022-12-14 06:23:54,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 3048. [2022-12-14 06:23:54,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 1885 states have (on average 1.3273209549071618) internal successors, (2502), 1947 states have internal predecessors, (2502), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-12-14 06:23:54,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 4465 transitions. [2022-12-14 06:23:54,763 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 4465 transitions. Word has length 143 [2022-12-14 06:23:54,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:23:54,763 INFO L495 AbstractCegarLoop]: Abstraction has 3048 states and 4465 transitions. [2022-12-14 06:23:54,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-14 06:23:54,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 4465 transitions. [2022-12-14 06:23:54,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 06:23:54,768 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:23:54,768 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:54,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 06:23:54,768 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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 06:23:54,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:23:54,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1501154721, now seen corresponding path program 1 times [2022-12-14 06:23:54,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:23:54,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113420654] [2022-12-14 06:23:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:23:54,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:23:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:23:55,535 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-12-14 06:23:55,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:23:55,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113420654] [2022-12-14 06:23:55,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113420654] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:23:55,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:23:55,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:23:55,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441227493] [2022-12-14 06:23:55,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:23:55,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:23:55,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:23:55,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:23:55,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:23:55,537 INFO L87 Difference]: Start difference. First operand 3048 states and 4465 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 06:23:57,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:24:03,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:24:03,263 INFO L93 Difference]: Finished difference Result 3054 states and 4469 transitions. [2022-12-14 06:24:03,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:24:03,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 144 [2022-12-14 06:24:03,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:24:03,272 INFO L225 Difference]: With dead ends: 3054 [2022-12-14 06:24:03,273 INFO L226 Difference]: Without dead ends: 3052 [2022-12-14 06:24:03,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 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 06:24:03,274 INFO L413 NwaCegarLoop]: 3827 mSDtfsCounter, 3933 mSDsluCounter, 8059 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3934 SdHoareTripleChecker+Valid, 11886 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:24:03,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3934 Valid, 11886 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1529 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-12-14 06:24:03,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2022-12-14 06:24:03,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 3048. [2022-12-14 06:24:03,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 1885 states have (on average 1.3267904509283819) internal successors, (2501), 1947 states have internal predecessors, (2501), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-12-14 06:24:03,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 4464 transitions. [2022-12-14 06:24:03,507 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 4464 transitions. Word has length 144 [2022-12-14 06:24:03,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:24:03,507 INFO L495 AbstractCegarLoop]: Abstraction has 3048 states and 4464 transitions. [2022-12-14 06:24:03,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 06:24:03,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 4464 transitions. [2022-12-14 06:24:03,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-12-14 06:24:03,517 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:24:03,518 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:24:03,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 06:24:03,518 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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 06:24:03,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:24:03,518 INFO L85 PathProgramCache]: Analyzing trace with hash 649121573, now seen corresponding path program 1 times [2022-12-14 06:24:03,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:24:03,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454778989] [2022-12-14 06:24:03,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:24:03,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:24:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:24:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-12-14 06:24:04,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:24:04,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454778989] [2022-12-14 06:24:04,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454778989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:24:04,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:24:04,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:24:04,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297831299] [2022-12-14 06:24:04,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:24:04,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:24:04,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:24:04,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:24:04,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:24:04,032 INFO L87 Difference]: Start difference. First operand 3048 states and 4464 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 06:24:06,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:24:12,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:24:12,762 INFO L93 Difference]: Finished difference Result 3052 states and 4467 transitions. [2022-12-14 06:24:12,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:24:12,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 192 [2022-12-14 06:24:12,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:24:12,773 INFO L225 Difference]: With dead ends: 3052 [2022-12-14 06:24:12,774 INFO L226 Difference]: Without dead ends: 3050 [2022-12-14 06:24:12,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:24:12,776 INFO L413 NwaCegarLoop]: 3898 mSDtfsCounter, 462 mSDsluCounter, 11332 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 15230 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:24:12,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 15230 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2014 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-12-14 06:24:12,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3050 states. [2022-12-14 06:24:12,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3050 to 3048. [2022-12-14 06:24:12,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 1885 states have (on average 1.3262599469496021) internal successors, (2500), 1947 states have internal predecessors, (2500), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-12-14 06:24:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 4463 transitions. [2022-12-14 06:24:13,009 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 4463 transitions. Word has length 192 [2022-12-14 06:24:13,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:24:13,010 INFO L495 AbstractCegarLoop]: Abstraction has 3048 states and 4463 transitions. [2022-12-14 06:24:13,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 06:24:13,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 4463 transitions. [2022-12-14 06:24:13,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-12-14 06:24:13,025 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:24:13,025 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:13,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 06:24:13,025 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 06:24:13,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:24:13,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1197702511, now seen corresponding path program 1 times [2022-12-14 06:24:13,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:24:13,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896498985] [2022-12-14 06:24:13,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:24:13,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:24:13,595 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:24:13,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1613374474] [2022-12-14 06:24:13,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:24:13,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:24:13,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:24:13,596 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:24:13,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 06:24:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:24:16,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 9248 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 06:24:16,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:24:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-12-14 06:24:16,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:24:16,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:24:16,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896498985] [2022-12-14 06:24:16,102 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:24:16,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613374474] [2022-12-14 06:24:16,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613374474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:24:16,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:24:16,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:24:16,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469888504] [2022-12-14 06:24:16,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:24:16,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:24:16,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:24:16,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:24:16,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:24:16,104 INFO L87 Difference]: Start difference. First operand 3048 states and 4463 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 2 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2022-12-14 06:24:18,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:24:20,033 WARN L539 Checker$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 06:24:22,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:24:22,920 INFO L93 Difference]: Finished difference Result 6085 states and 9018 transitions. [2022-12-14 06:24:22,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:24:22,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 2 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) Word has length 488 [2022-12-14 06:24:22,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:24:22,932 INFO L225 Difference]: With dead ends: 6085 [2022-12-14 06:24:22,932 INFO L226 Difference]: Without dead ends: 3051 [2022-12-14 06:24:22,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 486 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 06:24:22,944 INFO L413 NwaCegarLoop]: 3730 mSDtfsCounter, 0 mSDsluCounter, 3724 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7454 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:24:22,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7454 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 966 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-12-14 06:24:22,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2022-12-14 06:24:23,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 3051. [2022-12-14 06:24:23,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3051 states, 1888 states have (on average 1.3257415254237288) internal successors, (2503), 1950 states have internal predecessors, (2503), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-12-14 06:24:23,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 4466 transitions. [2022-12-14 06:24:23,152 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 4466 transitions. Word has length 488 [2022-12-14 06:24:23,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:24:23,153 INFO L495 AbstractCegarLoop]: Abstraction has 3051 states and 4466 transitions. [2022-12-14 06:24:23,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 2 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2022-12-14 06:24:23,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 4466 transitions. [2022-12-14 06:24:23,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2022-12-14 06:24:23,166 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:24:23,167 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:23,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:24:23,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 06:24:23,368 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 06:24:23,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:24:23,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1389766442, now seen corresponding path program 1 times [2022-12-14 06:24:23,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:24:23,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331106057] [2022-12-14 06:24:23,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:24:23,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:24:23,908 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:24:23,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1978590406] [2022-12-14 06:24:23,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:24:23,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:24:23,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:24:23,909 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:24:23,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 06:24:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:24:26,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 9264 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 06:24:26,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:24:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2022-12-14 06:24:26,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:24:26,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:24:26,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331106057] [2022-12-14 06:24:26,710 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:24:26,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978590406] [2022-12-14 06:24:26,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978590406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:24:26,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:24:26,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:24:26,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356244602] [2022-12-14 06:24:26,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:24:26,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:24:26,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:24:26,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:24:26,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:24:26,712 INFO L87 Difference]: Start difference. First operand 3051 states and 4466 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 2 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2022-12-14 06:24:28,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:24:32,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:24:32,230 INFO L93 Difference]: Finished difference Result 6211 states and 9186 transitions. [2022-12-14 06:24:32,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:24:32,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 2 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) Word has length 489 [2022-12-14 06:24:32,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:24:32,239 INFO L225 Difference]: With dead ends: 6211 [2022-12-14 06:24:32,239 INFO L226 Difference]: Without dead ends: 3174 [2022-12-14 06:24:32,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 487 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 06:24:32,250 INFO L413 NwaCegarLoop]: 3774 mSDtfsCounter, 99 mSDsluCounter, 3732 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 7506 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:24:32,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 7506 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 967 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-12-14 06:24:32,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2022-12-14 06:24:32,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 3052. [2022-12-14 06:24:32,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3052 states, 1889 states have (on average 1.3255690841715193) internal successors, (2504), 1951 states have internal predecessors, (2504), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-12-14 06:24:32,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 4467 transitions. [2022-12-14 06:24:32,470 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 4467 transitions. Word has length 489 [2022-12-14 06:24:32,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:24:32,470 INFO L495 AbstractCegarLoop]: Abstraction has 3052 states and 4467 transitions. [2022-12-14 06:24:32,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 2 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2022-12-14 06:24:32,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 4467 transitions. [2022-12-14 06:24:32,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2022-12-14 06:24:32,486 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:24:32,486 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 8, 7, 6, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:32,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 06:24:32,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 06:24:32,687 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:24:32,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:24:32,687 INFO L85 PathProgramCache]: Analyzing trace with hash 611940387, now seen corresponding path program 1 times [2022-12-14 06:24:32,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:24:32,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728473871] [2022-12-14 06:24:32,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:24:32,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:24:33,158 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:24:33,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139912385] [2022-12-14 06:24:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:24:33,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:24:33,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:24:33,159 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:24:33,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 06:24:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:24:35,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 9297 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:24:35,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:24:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-12-14 06:24:35,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:24:35,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:24:35,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728473871] [2022-12-14 06:24:35,971 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:24:35,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139912385] [2022-12-14 06:24:35,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139912385] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:24:35,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:24:35,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:24:35,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597529178] [2022-12-14 06:24:35,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:24:35,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:24:35,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:24:35,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:24:35,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:24:35,973 INFO L87 Difference]: Start difference. First operand 3052 states and 4467 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 3 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) [2022-12-14 06:24:38,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:24:41,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:24:41,031 INFO L93 Difference]: Finished difference Result 6096 states and 9017 transitions. [2022-12-14 06:24:41,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:24:41,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 3 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) Word has length 498 [2022-12-14 06:24:41,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:24:41,041 INFO L225 Difference]: With dead ends: 6096 [2022-12-14 06:24:41,041 INFO L226 Difference]: Without dead ends: 3058 [2022-12-14 06:24:41,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 496 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 06:24:41,051 INFO L413 NwaCegarLoop]: 3730 mSDtfsCounter, 4 mSDsluCounter, 3723 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7453 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-14 06:24:41,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 7453 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 969 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-12-14 06:24:41,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2022-12-14 06:24:41,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 3056. [2022-12-14 06:24:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3056 states, 1892 states have (on average 1.3255813953488371) internal successors, (2508), 1954 states have internal predecessors, (2508), 982 states have call successors, (982), 183 states have call predecessors, (982), 180 states have return successors, (983), 962 states have call predecessors, (983), 982 states have call successors, (983) [2022-12-14 06:24:41,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3056 states to 3056 states and 4473 transitions. [2022-12-14 06:24:41,299 INFO L78 Accepts]: Start accepts. Automaton has 3056 states and 4473 transitions. Word has length 498 [2022-12-14 06:24:41,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:24:41,299 INFO L495 AbstractCegarLoop]: Abstraction has 3056 states and 4473 transitions. [2022-12-14 06:24:41,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 3 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (94), 3 states have call predecessors, (94), 3 states have call successors, (94) [2022-12-14 06:24:41,300 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 4473 transitions. [2022-12-14 06:24:41,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2022-12-14 06:24:41,312 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:24:41,312 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 8, 7, 6, 6, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:41,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 06:24:41,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:24:41,514 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:24:41,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:24:41,515 INFO L85 PathProgramCache]: Analyzing trace with hash -604700599, now seen corresponding path program 1 times [2022-12-14 06:24:41,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:24:41,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812887708] [2022-12-14 06:24:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:24:41,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:24:42,038 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:24:42,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [474903414] [2022-12-14 06:24:42,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:24:42,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:24:42,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:24:42,039 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:24:42,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 06:24:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:24:44,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 9314 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:24:44,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:24:44,705 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-12-14 06:24:44,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:24:44,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:24:44,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812887708] [2022-12-14 06:24:44,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:24:44,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474903414] [2022-12-14 06:24:44,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474903414] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:24:44,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:24:44,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:24:44,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173210560] [2022-12-14 06:24:44,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:24:44,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:24:44,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:24:44,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:24:44,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:24:44,708 INFO L87 Difference]: Start difference. First operand 3056 states and 4473 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2022-12-14 06:24:46,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:24:50,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:24:50,038 INFO L93 Difference]: Finished difference Result 6097 states and 9018 transitions. [2022-12-14 06:24:50,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:24:50,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 502 [2022-12-14 06:24:50,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:24:50,049 INFO L225 Difference]: With dead ends: 6097 [2022-12-14 06:24:50,049 INFO L226 Difference]: Without dead ends: 3055 [2022-12-14 06:24:50,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 500 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 06:24:50,059 INFO L413 NwaCegarLoop]: 3730 mSDtfsCounter, 1 mSDsluCounter, 3721 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7451 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:24:50,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7451 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 971 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-12-14 06:24:50,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2022-12-14 06:24:50,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 3053. [2022-12-14 06:24:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3053 states, 1890 states have (on average 1.3253968253968254) internal successors, (2505), 1952 states have internal predecessors, (2505), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-12-14 06:24:50,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 4468 transitions. [2022-12-14 06:24:50,277 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 4468 transitions. Word has length 502 [2022-12-14 06:24:50,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:24:50,278 INFO L495 AbstractCegarLoop]: Abstraction has 3053 states and 4468 transitions. [2022-12-14 06:24:50,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2022-12-14 06:24:50,278 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 4468 transitions. [2022-12-14 06:24:50,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-12-14 06:24:50,289 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:24:50,290 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 8, 6, 6, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:50,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 06:24:50,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:24:50,491 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:24:50,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:24:50,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1903749001, now seen corresponding path program 1 times [2022-12-14 06:24:50,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:24:50,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439790584] [2022-12-14 06:24:50,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:24:50,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:24:51,012 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:24:51,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833127681] [2022-12-14 06:24:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:24:51,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:24:51,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:24:51,014 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:24:51,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 06:24:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:24:53,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 9095 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:24:53,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:24:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 389 proven. 1 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-12-14 06:24:53,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:24:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2022-12-14 06:24:54,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:24:54,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439790584] [2022-12-14 06:24:54,292 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:24:54,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833127681] [2022-12-14 06:24:54,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833127681] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:24:54,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1955713778] [2022-12-14 06:24:54,315 INFO L159 IcfgInterpreter]: Started Sifa with 310 locations of interest [2022-12-14 06:24:54,315 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:24:54,319 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 06:24:54,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 06:24:54,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-14 06:24:54,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060026765] [2022-12-14 06:24:54,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 06:24:54,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 06:24:54,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:24:54,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 06:24:54,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:24:54,323 INFO L87 Difference]: Start difference. First operand 3053 states and 4468 transitions. Second operand has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 2 states have call successors, (147), 2 states have call predecessors, (147), 2 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2022-12-14 06:24:56,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:25:02,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:25:02,157 INFO L93 Difference]: Finished difference Result 6101 states and 9040 transitions. [2022-12-14 06:25:02,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:25:02,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 2 states have call successors, (147), 2 states have call predecessors, (147), 2 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) Word has length 483 [2022-12-14 06:25:02,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:25:02,166 INFO L225 Difference]: With dead ends: 6101 [2022-12-14 06:25:02,166 INFO L226 Difference]: Without dead ends: 3062 [2022-12-14 06:25:02,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 960 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:25:02,179 INFO L413 NwaCegarLoop]: 3730 mSDtfsCounter, 0 mSDsluCounter, 11172 mSDsCounter, 0 mSdLazyCounter, 1936 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14902 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1936 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:25:02,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14902 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1936 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-12-14 06:25:02,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2022-12-14 06:25:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3062. [2022-12-14 06:25:02,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3062 states, 1899 states have (on average 1.3238546603475514) internal successors, (2514), 1961 states have internal predecessors, (2514), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-12-14 06:25:02,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 4477 transitions. [2022-12-14 06:25:02,386 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 4477 transitions. Word has length 483 [2022-12-14 06:25:02,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:25:02,387 INFO L495 AbstractCegarLoop]: Abstraction has 3062 states and 4477 transitions. [2022-12-14 06:25:02,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 2 states have call successors, (147), 2 states have call predecessors, (147), 2 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2022-12-14 06:25:02,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 4477 transitions. [2022-12-14 06:25:02,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2022-12-14 06:25:02,398 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:25:02,398 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 8, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:25:02,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 06:25:02,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:25:02,600 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:25:02,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:25:02,601 INFO L85 PathProgramCache]: Analyzing trace with hash -333227540, now seen corresponding path program 1 times [2022-12-14 06:25:02,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:25:02,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514968308] [2022-12-14 06:25:02,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:25:02,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:25:03,096 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:25:03,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228139712] [2022-12-14 06:25:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:25:03,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:25:03,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:25:03,098 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:25:03,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 06:25:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:25:06,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 9358 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 06:25:06,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:25:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 424 proven. 10 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2022-12-14 06:25:06,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:25:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2022-12-14 06:25:06,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:25:06,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514968308] [2022-12-14 06:25:06,958 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:25:06,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228139712] [2022-12-14 06:25:06,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228139712] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:25:06,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [440335085] [2022-12-14 06:25:06,965 INFO L159 IcfgInterpreter]: Started Sifa with 319 locations of interest [2022-12-14 06:25:06,965 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:25:06,966 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 06:25:06,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 06:25:06,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-12-14 06:25:06,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295491201] [2022-12-14 06:25:06,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 06:25:06,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:25:06,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:25:06,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:25:06,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:25:06,968 INFO L87 Difference]: Start difference. First operand 3062 states and 4477 transitions. Second operand has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 2 states have call successors, (154), 2 states have call predecessors, (154), 2 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2022-12-14 06:25:08,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:25:15,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:25:15,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:25:15,681 INFO L93 Difference]: Finished difference Result 6116 states and 9052 transitions. [2022-12-14 06:25:15,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:25:15,682 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 2 states have call successors, (154), 2 states have call predecessors, (154), 2 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) Word has length 506 [2022-12-14 06:25:15,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:25:15,690 INFO L225 Difference]: With dead ends: 6116 [2022-12-14 06:25:15,690 INFO L226 Difference]: Without dead ends: 3068 [2022-12-14 06:25:15,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 1000 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:25:15,699 INFO L413 NwaCegarLoop]: 3730 mSDtfsCounter, 0 mSDsluCounter, 11172 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14902 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:25:15,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14902 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1942 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-12-14 06:25:15,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2022-12-14 06:25:15,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3068. [2022-12-14 06:25:15,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 1905 states have (on average 1.3228346456692914) internal successors, (2520), 1967 states have internal predecessors, (2520), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-12-14 06:25:15,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4483 transitions. [2022-12-14 06:25:15,908 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4483 transitions. Word has length 506 [2022-12-14 06:25:15,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:25:15,908 INFO L495 AbstractCegarLoop]: Abstraction has 3068 states and 4483 transitions. [2022-12-14 06:25:15,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 2 states have call successors, (154), 2 states have call predecessors, (154), 2 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2022-12-14 06:25:15,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4483 transitions. [2022-12-14 06:25:15,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-12-14 06:25:15,920 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:25:15,920 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 8, 7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:25:15,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 06:25:16,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-14 06:25:16,121 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:25:16,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:25:16,122 INFO L85 PathProgramCache]: Analyzing trace with hash -25080116, now seen corresponding path program 2 times [2022-12-14 06:25:16,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:25:16,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337628578] [2022-12-14 06:25:16,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:25:16,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:25:16,625 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:25:16,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [684575774] [2022-12-14 06:25:16,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 06:25:16,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:25:16,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:25:16,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:25:16,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5586b495-ef76-4584-845b-d6faf868cd6d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process