./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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.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_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8 --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 Automizer --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 [2022-12-13 19:55:42,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:55:42,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:55:42,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:55:42,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:55:42,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:55:42,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:55:42,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:55:42,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:55:42,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:55:42,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:55:42,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:55:42,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:55:42,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:55:42,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:55:42,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:55:42,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:55:42,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:55:42,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:55:42,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:55:42,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:55:42,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:55:42,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:55:42,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:55:42,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:55:42,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:55:42,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:55:42,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:55:42,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:55:42,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:55:42,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:55:42,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:55:42,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:55:42,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:55:42,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:55:42,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:55:42,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:55:42,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:55:42,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:55:42,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:55:42,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:55:42,319 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 19:55:42,338 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:55:42,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:55:42,338 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:55:42,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:55:42,339 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:55:42,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:55:42,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:55:42,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:55:42,346 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:55:42,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:55:42,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:55:42,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:55:42,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:55:42,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:55:42,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:55:42,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:55:42,347 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:55:42,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:55:42,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:55:42,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:55:42,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:55:42,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:55:42,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:55:42,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:55:42,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:55:42,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:55:42,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:55:42,349 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:55:42,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:55:42,349 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:55:42,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:55:42,349 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:55:42,349 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 [2022-12-13 19:55:42,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:55:42,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:55:42,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:55:42,532 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:55:42,532 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:55:42,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-12-13 19:55:45,110 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:55:45,568 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:55:45,568 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-12-13 19:55:45,611 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/data/32ee92076/510daf60ce184582917273d64b3a3579/FLAG41e3dfbf9 [2022-12-13 19:55:45,682 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/data/32ee92076/510daf60ce184582917273d64b3a3579 [2022-12-13 19:55:45,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:55:45,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:55:45,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:55:45,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:55:45,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:55:45,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:55:45" (1/1) ... [2022-12-13 19:55:45,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6622b75b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:45, skipping insertion in model container [2022-12-13 19:55:45,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:55:45" (1/1) ... [2022-12-13 19:55:45,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:55:45,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:55:46,440 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-12-13 19:55:46,452 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-12-13 19:55:46,463 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-13 19:55:46,521 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-13 19:55:46,607 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 19:55:46,607 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-13 19:55:46,608 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-13 19:55:46,608 WARN L623 FunctionHandler]: Unknown extern function __copy_from_user_overflow [2022-12-13 19:55:46,614 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 19:55:46,615 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-13 19:55:46,616 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-13 19:55:46,616 WARN L623 FunctionHandler]: Unknown extern function __copy_to_user_overflow [2022-12-13 19:55:46,664 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-13 19:55:46,668 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-13 19:55:46,668 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-12-13 19:55:46,676 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-12-13 19:55:46,700 WARN L623 FunctionHandler]: Unknown extern function debug_dma_alloc_coherent [2022-12-13 19:55:46,708 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-13 19:55:46,710 WARN L623 FunctionHandler]: Unknown extern function debug_dma_free_coherent [2022-12-13 19:55:46,745 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-13 19:55:46,800 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-13 19:55:46,811 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-12-13 19:55:46,867 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-13 19:55:46,867 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-13 19:55:46,879 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-13 19:55:46,879 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:46,907 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_irq [2022-12-13 19:55:46,958 WARN L623 FunctionHandler]: Unknown extern function pci_bus_read_config_byte [2022-12-13 19:55:46,964 WARN L623 FunctionHandler]: Unknown extern function pci_bus_read_config_word [2022-12-13 19:55:46,970 WARN L623 FunctionHandler]: Unknown extern function pci_bus_write_config_byte [2022-12-13 19:55:46,976 WARN L623 FunctionHandler]: Unknown extern function pci_bus_write_config_word [2022-12-13 19:55:47,027 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-12-13 19:55:47,545 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,545 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,545 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,546 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,546 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,546 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,547 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,547 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,547 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,548 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,548 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,549 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,549 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,550 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,550 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-13 19:55:47,551 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-13 19:55:47,552 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 19:55:47,557 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,558 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,561 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-13 19:55:47,561 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,562 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,562 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,562 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,563 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,564 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,564 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,564 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,565 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,565 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,566 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,566 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,570 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,571 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,572 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,575 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,580 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,581 WARN L623 FunctionHandler]: Unknown extern function synchronize_irq [2022-12-13 19:55:47,583 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,589 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,590 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-12-13 19:55:47,590 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-13 19:55:47,608 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,618 WARN L623 FunctionHandler]: Unknown extern function crc32_le [2022-12-13 19:55:47,636 WARN L623 FunctionHandler]: Unknown extern function pci_enable_device [2022-12-13 19:55:47,639 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-12-13 19:55:47,640 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-13 19:55:47,640 WARN L623 FunctionHandler]: Unknown extern function pci_disable_device [2022-12-13 19:55:47,646 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-13 19:55:47,646 WARN L623 FunctionHandler]: Unknown extern function pci_disable_device [2022-12-13 19:55:47,711 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,715 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,718 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,718 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,719 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,719 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,720 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,720 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,721 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,721 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,739 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-13 19:55:47,740 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-13 19:55:47,752 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,756 WARN L623 FunctionHandler]: Unknown extern function strncpy [2022-12-13 19:55:47,756 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:47,773 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,774 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,775 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,776 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,777 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,782 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,782 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,812 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,813 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,813 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,826 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,828 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,831 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,832 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,838 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,839 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,839 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,839 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,840 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,840 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,840 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,841 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,841 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,841 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,846 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,847 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:47,849 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:47,849 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:47,850 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:47,851 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:47,852 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:47,852 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:47,852 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:47,853 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:47,854 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:47,855 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:47,855 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:47,856 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:47,857 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:47,857 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:47,859 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,859 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,860 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,860 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,860 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,861 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,861 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,861 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,862 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,863 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,863 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,863 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,864 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,864 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,865 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,865 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,866 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,867 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,867 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,868 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,868 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,869 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,869 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,870 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,871 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,871 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,872 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,872 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,873 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,877 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,877 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,878 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,878 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,878 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,878 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,879 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,879 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,880 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,880 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,880 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,881 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,884 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-13 19:55:47,885 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-13 19:55:47,885 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:47,885 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-13 19:55:47,887 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-13 19:55:47,887 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-13 19:55:48,191 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 19:55:48,191 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 19:55:48,192 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-13 19:55:48,192 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 19:55:48,192 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 19:55:48,193 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-13 19:55:48,193 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 19:55:48,194 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 19:55:48,194 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-13 19:55:48,194 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 19:55:48,195 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 19:55:48,195 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-13 19:55:48,196 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-13 19:55:48,198 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-13 19:55:48,198 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-13 19:55:48,208 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-12-13 19:55:48,210 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-12-13 19:55:48,213 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-13 19:55:48,213 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-13 19:55:48,214 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-12-13 19:55:48,216 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-13 19:55:48,216 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-13 19:55:48,217 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-13 19:55:48,217 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-13 19:55:48,218 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-12-13 19:55:48,218 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-13 19:55:48,218 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-13 19:55:48,219 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-13 19:55:48,219 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-13 19:55:48,219 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-12-13 19:55:48,220 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-13 19:55:48,220 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-13 19:55:48,221 WARN L623 FunctionHandler]: Unknown extern function __pci_register_driver [2022-12-13 19:55:48,221 WARN L623 FunctionHandler]: Unknown extern function pci_unregister_driver [2022-12-13 19:55:48,286 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-13 19:55:48,287 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-13 19:55:48,299 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-13 19:55:48,892 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_a354f641-3353-43a9-be92-b999b87b5c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2022-12-13 19:55:48,895 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_a354f641-3353-43a9-be92-b999b87b5c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2022-12-13 19:55:48,895 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_a354f641-3353-43a9-be92-b999b87b5c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2022-12-13 19:55:48,895 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_a354f641-3353-43a9-be92-b999b87b5c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2022-12-13 19:55:48,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:55:48,958 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:55:49,015 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-12-13 19:55:49,016 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-12-13 19:55:49,016 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-13 19:55:49,016 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-13 19:55:49,017 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 19:55:49,018 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-13 19:55:49,018 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-13 19:55:49,018 WARN L623 FunctionHandler]: Unknown extern function __copy_from_user_overflow [2022-12-13 19:55:49,018 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 19:55:49,019 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-13 19:55:49,019 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-13 19:55:49,019 WARN L623 FunctionHandler]: Unknown extern function __copy_to_user_overflow [2022-12-13 19:55:49,022 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-13 19:55:49,023 WARN L623 FunctionHandler]: Unknown extern function __phys_addr [2022-12-13 19:55:49,023 WARN L623 FunctionHandler]: Unknown extern function debug_dma_map_page [2022-12-13 19:55:49,024 WARN L623 FunctionHandler]: Unknown extern function debug_dma_unmap_page [2022-12-13 19:55:49,025 WARN L623 FunctionHandler]: Unknown extern function debug_dma_alloc_coherent [2022-12-13 19:55:49,026 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-13 19:55:49,026 WARN L623 FunctionHandler]: Unknown extern function debug_dma_free_coherent [2022-12-13 19:55:49,028 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-13 19:55:49,032 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-13 19:55:49,032 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-12-13 19:55:49,033 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-13 19:55:49,033 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-13 19:55:49,034 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-13 19:55:49,034 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,035 WARN L623 FunctionHandler]: Unknown extern function __dev_kfree_skb_irq [2022-12-13 19:55:49,035 WARN L623 FunctionHandler]: Unknown extern function pci_bus_read_config_byte [2022-12-13 19:55:49,036 WARN L623 FunctionHandler]: Unknown extern function pci_bus_read_config_word [2022-12-13 19:55:49,038 WARN L623 FunctionHandler]: Unknown extern function pci_bus_write_config_byte [2022-12-13 19:55:49,039 WARN L623 FunctionHandler]: Unknown extern function pci_bus_write_config_word [2022-12-13 19:55:49,041 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-12-13 19:55:49,046 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,046 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,046 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,046 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,047 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,047 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,047 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,047 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,047 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,048 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,048 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,048 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,049 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,049 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,049 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-13 19:55:49,050 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-13 19:55:49,050 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 19:55:49,053 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,053 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,055 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-13 19:55:49,056 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,056 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,057 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,057 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,057 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,058 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,058 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,058 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,059 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,059 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,059 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,059 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,062 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,062 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,062 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,064 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,067 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,067 WARN L623 FunctionHandler]: Unknown extern function synchronize_irq [2022-12-13 19:55:49,068 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,071 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,072 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-12-13 19:55:49,072 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-13 19:55:49,086 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,091 WARN L623 FunctionHandler]: Unknown extern function crc32_le [2022-12-13 19:55:49,095 WARN L623 FunctionHandler]: Unknown extern function pci_enable_device [2022-12-13 19:55:49,097 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-12-13 19:55:49,097 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-13 19:55:49,098 WARN L623 FunctionHandler]: Unknown extern function pci_disable_device [2022-12-13 19:55:49,098 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-13 19:55:49,098 WARN L623 FunctionHandler]: Unknown extern function pci_disable_device [2022-12-13 19:55:49,131 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,134 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,135 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,136 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,136 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,136 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,137 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,137 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,137 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,137 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,149 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-13 19:55:49,149 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-13 19:55:49,157 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,159 WARN L623 FunctionHandler]: Unknown extern function strncpy [2022-12-13 19:55:49,159 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:49,169 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,170 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,170 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,171 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,171 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,174 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,175 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,194 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,194 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,194 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,195 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,195 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,197 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,197 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,200 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,200 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,201 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,201 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,201 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,201 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,202 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,202 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,202 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,202 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,204 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,205 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-13 19:55:49,206 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:49,206 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:49,206 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:49,207 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:49,207 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:49,207 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:49,208 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:49,208 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:49,208 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:49,221 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:49,222 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:49,223 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:49,223 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:49,224 WARN L623 FunctionHandler]: Unknown extern function strstr [2022-12-13 19:55:49,225 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,225 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,225 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,225 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,225 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,226 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,226 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,227 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,227 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,227 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,228 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,228 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,228 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,228 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,229 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,229 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,229 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,230 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,231 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,231 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,231 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,232 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,232 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,233 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,233 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,233 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,234 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,234 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,235 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,237 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,237 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,238 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,238 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,238 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,238 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,239 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,239 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,240 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,240 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,240 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,241 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,243 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-13 19:55:49,244 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-13 19:55:49,244 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:55:49,245 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-13 19:55:49,246 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-13 19:55:49,247 WARN L623 FunctionHandler]: Unknown extern function capable [2022-12-13 19:55:49,254 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 19:55:49,254 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 19:55:49,254 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-13 19:55:49,255 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 19:55:49,255 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 19:55:49,255 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-13 19:55:49,256 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 19:55:49,256 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 19:55:49,257 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-13 19:55:49,257 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-13 19:55:49,257 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-13 19:55:49,258 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-13 19:55:49,258 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-13 19:55:49,259 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-13 19:55:49,259 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-13 19:55:49,266 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-12-13 19:55:49,268 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-12-13 19:55:49,272 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-13 19:55:49,273 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-13 19:55:49,276 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-12-13 19:55:49,277 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-13 19:55:49,277 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-13 19:55:49,277 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-13 19:55:49,278 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-13 19:55:49,278 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-12-13 19:55:49,278 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-13 19:55:49,279 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-13 19:55:49,279 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-13 19:55:49,279 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-13 19:55:49,279 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-12-13 19:55:49,280 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-13 19:55:49,280 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-13 19:55:49,280 WARN L623 FunctionHandler]: Unknown extern function __pci_register_driver [2022-12-13 19:55:49,281 WARN L623 FunctionHandler]: Unknown extern function pci_unregister_driver [2022-12-13 19:55:49,283 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-13 19:55:49,283 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-13 19:55:49,283 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-13 19:55:49,299 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_a354f641-3353-43a9-be92-b999b87b5c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2022-12-13 19:55:49,300 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2022-12-13 19:55:49,300 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2022-12-13 19:55:49,300 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2022-12-13 19:55:49,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:55:49,435 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:55:49,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:49 WrapperNode [2022-12-13 19:55:49,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:55:49,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:55:49,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:55:49,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:55:49,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:49" (1/1) ... [2022-12-13 19:55:49,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:49" (1/1) ... [2022-12-13 19:55:49,734 INFO L138 Inliner]: procedures = 526, calls = 4210, calls flagged for inlining = 232, calls inlined = 215, statements flattened = 8627 [2022-12-13 19:55:49,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:55:49,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:55:49,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:55:49,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:55:49,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:49" (1/1) ... [2022-12-13 19:55:49,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:49" (1/1) ... [2022-12-13 19:55:49,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:49" (1/1) ... [2022-12-13 19:55:49,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:49" (1/1) ... [2022-12-13 19:55:49,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:49" (1/1) ... [2022-12-13 19:55:49,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:49" (1/1) ... [2022-12-13 19:55:49,994 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:49" (1/1) ... [2022-12-13 19:55:50,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:49" (1/1) ... [2022-12-13 19:55:50,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:55:50,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:55:50,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:55:50,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:55:50,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:49" (1/1) ... [2022-12-13 19:55:50,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:55:50,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:55:50,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:55:50,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:55:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure disable_ast [2022-12-13 19:55:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_ast [2022-12-13 19:55:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-12-13 19:55:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-12-13 19:55:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-12-13 19:55:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-12-13 19:55:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-13 19:55:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-13 19:55:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2022-12-13 19:55:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2022-12-13 19:55:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_put_cache [2022-12-13 19:55:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_put_cache [2022-12-13 19:55:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-12-13 19:55:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-12-13 19:55:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_de4x5_private [2022-12-13 19:55:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_de4x5_private [2022-12-13 19:55:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-12-13 19:55:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-12-13 19:55:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_de4x5_private [2022-12-13 19:55:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_de4x5_private [2022-12-13 19:55:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_mii [2022-12-13 19:55:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_mii [2022-12-13 19:55:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_switch_mac_port [2022-12-13 19:55:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_switch_mac_port [2022-12-13 19:55:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-12-13 19:55:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-12-13 19:55:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure srom_latch [2022-12-13 19:55:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_latch [2022-12-13 19:55:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2022-12-13 19:55:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2022-12-13 19:55:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-12-13 19:55:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-12-13 19:55:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure build_setup_frame [2022-12-13 19:55:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure build_setup_frame [2022-12-13 19:55:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2022-12-13 19:55:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2022-12-13 19:55:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2022-12-13 19:55:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2022-12-13 19:55:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-12-13 19:55:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-12-13 19:55:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure DevicePresent [2022-12-13 19:55:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure DevicePresent [2022-12-13 19:55:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-12-13 19:55:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-12-13 19:55:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-12-13 19:55:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-12-13 19:55:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2022-12-13 19:55:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2022-12-13 19:55:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2022-12-13 19:55:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2022-12-13 19:55:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-12-13 19:55:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-12-13 19:55:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-12-13 19:55:50,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-12-13 19:55:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-12-13 19:55:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_sw_reset [2022-12-13 19:55:50,108 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_sw_reset [2022-12-13 19:55:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:55:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-12-13 19:55:50,108 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-12-13 19:55:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-12-13 19:55:50,108 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-12-13 19:55:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-12-13 19:55:50,108 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-12-13 19:55:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure is_spd_100 [2022-12-13 19:55:50,108 INFO L138 BoogieDeclarations]: Found implementation of procedure is_spd_100 [2022-12-13 19:55:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-12-13 19:55:50,108 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-12-13 19:55:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-13 19:55:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-12-13 19:55:50,109 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-12-13 19:55:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_mii [2022-12-13 19:55:50,109 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_mii [2022-12-13 19:55:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_rx_buffs [2022-12-13 19:55:50,109 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_rx_buffs [2022-12-13 19:55:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-12-13 19:55:50,109 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-12-13 19:55:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-12-13 19:55:50,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-12-13 19:55:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-12-13 19:55:50,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-12-13 19:55:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 19:55:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-12-13 19:55:50,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-12-13 19:55:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:55:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-12-13 19:55:50,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-12-13 19:55:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-12-13 19:55:50,110 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-12-13 19:55:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-12-13 19:55:50,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-12-13 19:55:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-12-13 19:55:50,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-12-13 19:55:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure ping_media [2022-12-13 19:55:50,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ping_media [2022-12-13 19:55:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-12-13 19:55:50,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-12-13 19:55:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2022-12-13 19:55:50,110 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2022-12-13 19:55:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-12-13 19:55:50,110 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-12-13 19:55:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-12-13 19:55:50,110 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-12-13 19:55:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_tx [2022-12-13 19:55:50,110 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_tx [2022-12-13 19:55:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-12-13 19:55:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-12-13 19:55:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-12-13 19:55:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-12-13 19:55:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure srom_rd [2022-12-13 19:55:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_rd [2022-12-13 19:55:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 19:55:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure SetMulticastFilter [2022-12-13 19:55:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMulticastFilter [2022-12-13 19:55:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:55:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ioctl [2022-12-13 19:55:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ioctl [2022-12-13 19:55:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-12-13 19:55:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-12-13 19:55:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-12-13 19:55:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-12-13 19:55:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 19:55:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-12-13 19:55:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-12-13 19:55:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_srom [2022-12-13 19:55:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_srom [2022-12-13 19:55:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-12-13 19:55:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-12-13 19:55:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-12-13 19:55:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-12-13 19:55:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure mii_swap [2022-12-13 19:55:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_swap [2022-12-13 19:55:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_reset_phy [2022-12-13 19:55:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_reset_phy [2022-12-13 19:55:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_putb_cache [2022-12-13 19:55:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_putb_cache [2022-12-13 19:55:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-12-13 19:55:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-12-13 19:55:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2022-12-13 19:55:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2022-12-13 19:55:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-12-13 19:55:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-12-13 19:55:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_stats [2022-12-13 19:55:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_stats [2022-12-13 19:55:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-12-13 19:55:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-12-13 19:55:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-12-13 19:55:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-12-13 19:55:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init_connection [2022-12-13 19:55:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init_connection [2022-12-13 19:55:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wr [2022-12-13 19:55:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wr [2022-12-13 19:55:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:55:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:55:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_state [2022-12-13 19:55:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_state [2022-12-13 19:55:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-12-13 19:55:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-12-13 19:55:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2022-12-13 19:55:50,114 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2022-12-13 19:55:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-13 19:55:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-13 19:55:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-12-13 19:55:50,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-12-13 19:55:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure reset_init_sia [2022-12-13 19:55:50,114 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_init_sia [2022-12-13 19:55:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-12-13 19:55:50,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-12-13 19:55:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-12-13 19:55:50,114 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-12-13 19:55:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_alloc_rx_buff [2022-12-13 19:55:50,114 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_alloc_rx_buff [2022-12-13 19:55:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure test_for_100Mb [2022-12-13 19:55:50,114 INFO L138 BoogieDeclarations]: Found implementation of procedure test_for_100Mb [2022-12-13 19:55:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-12-13 19:55:50,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-12-13 19:55:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2022-12-13 19:55:50,115 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2022-12-13 19:55:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure load_packet [2022-12-13 19:55:50,115 INFO L138 BoogieDeclarations]: Found implementation of procedure load_packet [2022-12-13 19:55:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2022-12-13 19:55:50,115 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2022-12-13 19:55:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure is_100_up [2022-12-13 19:55:50,115 INFO L138 BoogieDeclarations]: Found implementation of procedure is_100_up [2022-12-13 19:55:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2022-12-13 19:55:50,115 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2022-12-13 19:55:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-13 19:55:50,115 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-13 19:55:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ta [2022-12-13 19:55:50,115 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ta [2022-12-13 19:55:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-12-13 19:55:50,115 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-12-13 19:55:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2022-12-13 19:55:50,115 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2022-12-13 19:55:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-12-13 19:55:50,116 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-12-13 19:55:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure test_mii_reg [2022-12-13 19:55:50,116 INFO L138 BoogieDeclarations]: Found implementation of procedure test_mii_reg [2022-12-13 19:55:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_cache_state [2022-12-13 19:55:50,116 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_cache_state [2022-12-13 19:55:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-12-13 19:55:50,116 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-12-13 19:55:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_pci_remove [2022-12-13 19:55:50,116 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_pci_remove [2022-12-13 19:55:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:55:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_media [2022-12-13 19:55:50,116 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_media [2022-12-13 19:55:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2022-12-13 19:55:50,116 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2022-12-13 19:55:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2022-12-13 19:55:50,116 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2022-12-13 19:55:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure mii_rd [2022-12-13 19:55:50,117 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_rd [2022-12-13 19:55:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 19:55:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2022-12-13 19:55:50,117 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2022-12-13 19:55:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2022-12-13 19:55:50,117 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2022-12-13 19:55:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2022-12-13 19:55:50,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2022-12-13 19:55:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 19:55:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-12-13 19:55:50,117 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-12-13 19:55:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure is_10_up [2022-12-13 19:55:50,117 INFO L138 BoogieDeclarations]: Found implementation of procedure is_10_up [2022-12-13 19:55:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-12-13 19:55:50,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-12-13 19:55:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-12-13 19:55:50,117 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-12-13 19:55:50,118 INFO L130 BoogieDeclarations]: Found specification of procedure is_anc_capable [2022-12-13 19:55:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure is_anc_capable [2022-12-13 19:55:50,118 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2022-12-13 19:55:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2022-12-13 19:55:50,118 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-12-13 19:55:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-12-13 19:55:50,118 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-12-13 19:55:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-12-13 19:55:50,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-12-13 19:55:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-12-13 19:55:50,118 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2022-12-13 19:55:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2022-12-13 19:55:50,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-12-13 19:55:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-12-13 19:55:50,118 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-12-13 19:55:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-12-13 19:55:50,118 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_queue_pkt [2022-12-13 19:55:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_queue_pkt [2022-12-13 19:55:50,118 INFO L130 BoogieDeclarations]: Found specification of procedure test_media [2022-12-13 19:55:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure test_media [2022-12-13 19:55:50,119 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buffs [2022-12-13 19:55:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buffs [2022-12-13 19:55:50,119 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2022-12-13 19:55:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2022-12-13 19:55:50,119 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-12-13 19:55:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-12-13 19:55:50,119 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-12-13 19:55:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-12-13 19:55:50,119 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-12-13 19:55:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-12-13 19:55:50,119 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2022-12-13 19:55:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2022-12-13 19:55:50,119 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-12-13 19:55:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-12-13 19:55:50,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_73 [2022-12-13 19:55:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_73 [2022-12-13 19:55:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_infoleaf [2022-12-13 19:55:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_infoleaf [2022-12-13 19:55:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:55:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure srom_exec [2022-12-13 19:55:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_exec [2022-12-13 19:55:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-13 19:55:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-13 19:55:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure gep_wr [2022-12-13 19:55:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_wr [2022-12-13 19:55:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-12-13 19:55:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-12-13 19:55:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_srom [2022-12-13 19:55:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_srom [2022-12-13 19:55:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-12-13 19:55:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-12-13 19:55:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_cache [2022-12-13 19:55:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_cache [2022-12-13 19:55:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2022-12-13 19:55:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2022-12-13 19:55:50,121 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_mii [2022-12-13 19:55:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_mii [2022-12-13 19:55:50,121 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2022-12-13 19:55:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2022-12-13 19:55:50,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-12-13 19:55:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-12-13 19:55:50,121 INFO L130 BoogieDeclarations]: Found specification of procedure gep_rd [2022-12-13 19:55:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_rd [2022-12-13 19:55:50,121 INFO L130 BoogieDeclarations]: Found specification of procedure mii_address [2022-12-13 19:55:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_address [2022-12-13 19:55:50,121 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buff [2022-12-13 19:55:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buff [2022-12-13 19:55:50,121 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_setup_intr [2022-12-13 19:55:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_setup_intr [2022-12-13 19:55:50,121 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_save_skbs [2022-12-13 19:55:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_save_skbs [2022-12-13 19:55:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2022-12-13 19:55:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2022-12-13 19:55:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-12-13 19:55:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-12-13 19:55:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure srom_map_media [2022-12-13 19:55:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_map_media [2022-12-13 19:55:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_strncmp [2022-12-13 19:55:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_strncmp [2022-12-13 19:55:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-12-13 19:55:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-12-13 19:55:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_close [2022-12-13 19:55:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_close [2022-12-13 19:55:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure yawn [2022-12-13 19:55:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure yawn [2022-12-13 19:55:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wdata [2022-12-13 19:55:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wdata [2022-12-13 19:55:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:55:50,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-12-13 19:55:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-12-13 19:55:50,123 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-12-13 19:55:50,911 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:55:50,914 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:55:51,266 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-12-13 19:56:05,777 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:56:05,796 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:56:05,796 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-12-13 19:56:05,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:56:05 BoogieIcfgContainer [2022-12-13 19:56:05,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:56:05,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:56:05,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:56:05,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:56:05,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:55:45" (1/3) ... [2022-12-13 19:56:05,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4879e982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:56:05, skipping insertion in model container [2022-12-13 19:56:05,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:55:49" (2/3) ... [2022-12-13 19:56:05,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4879e982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:56:05, skipping insertion in model container [2022-12-13 19:56:05,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:56:05" (3/3) ... [2022-12-13 19:56:05,806 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-12-13 19:56:05,819 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:56:05,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-13 19:56:05,899 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:56:05,904 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=PETRI_NET, 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;@254b6939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:56:05,904 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 19:56:05,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 3808 states, 2698 states have (on average 1.3606375092661231) internal successors, (3671), 2775 states have internal predecessors, (3671), 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) [2022-12-13 19:56:05,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-13 19:56:05,922 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:05,922 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:05,923 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)] === [2022-12-13 19:56:05,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:05,926 INFO L85 PathProgramCache]: Analyzing trace with hash 728017433, now seen corresponding path program 1 times [2022-12-13 19:56:05,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:05,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623409966] [2022-12-13 19:56:05,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:05,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:56:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:06,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:56:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:06,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:56:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:06,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:06,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:56:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:06,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:56:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 19:56:06,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:06,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623409966] [2022-12-13 19:56:06,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623409966] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:06,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:06,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:56:06,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224372240] [2022-12-13 19:56:06,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:06,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:56:06,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:06,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:56:06,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:56:06,647 INFO L87 Difference]: Start difference. First operand has 3808 states, 2698 states have (on average 1.3606375092661231) internal successors, (3671), 2775 states have internal predecessors, (3671), 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 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-12-13 19:56:07,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:07,003 INFO L93 Difference]: Finished difference Result 7543 states and 11315 transitions. [2022-12-13 19:56:07,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:56:07,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 48 [2022-12-13 19:56:07,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:07,035 INFO L225 Difference]: With dead ends: 7543 [2022-12-13 19:56:07,035 INFO L226 Difference]: Without dead ends: 3746 [2022-12-13 19:56:07,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:56:07,062 INFO L413 NwaCegarLoop]: 5493 mSDtfsCounter, 5471 mSDsluCounter, 10972 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5484 SdHoareTripleChecker+Valid, 16465 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:07,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5484 Valid, 16465 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:56:07,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2022-12-13 19:56:07,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 3746. [2022-12-13 19:56:07,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3746 states, 2646 states have (on average 1.354875283446712) internal successors, (3585), 2704 states have internal predecessors, (3585), 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) [2022-12-13 19:56:07,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3746 states to 3746 states and 5476 transitions. [2022-12-13 19:56:07,334 INFO L78 Accepts]: Start accepts. Automaton has 3746 states and 5476 transitions. Word has length 48 [2022-12-13 19:56:07,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:56:07,335 INFO L495 AbstractCegarLoop]: Abstraction has 3746 states and 5476 transitions. [2022-12-13 19:56:07,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-12-13 19:56:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3746 states and 5476 transitions. [2022-12-13 19:56:07,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-13 19:56:07,337 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:07,338 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:07,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:56:07,338 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)] === [2022-12-13 19:56:07,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:07,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1338368003, now seen corresponding path program 1 times [2022-12-13 19:56:07,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:07,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29096823] [2022-12-13 19:56:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:07,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:07,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:56:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:07,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:56:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:07,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:56:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:07,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:07,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:56:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:07,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:56:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:56:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 19:56:07,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:07,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29096823] [2022-12-13 19:56:07,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29096823] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:07,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:07,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:56:07,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005513408] [2022-12-13 19:56:07,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:07,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:56:07,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:07,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:56:07,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:56:07,745 INFO L87 Difference]: Start difference. First operand 3746 states and 5476 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:07,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:07,965 INFO L93 Difference]: Finished difference Result 3752 states and 5481 transitions. [2022-12-13 19:56:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:56:07,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 53 [2022-12-13 19:56:07,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:07,982 INFO L225 Difference]: With dead ends: 3752 [2022-12-13 19:56:07,982 INFO L226 Difference]: Without dead ends: 3750 [2022-12-13 19:56:07,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:56:07,985 INFO L413 NwaCegarLoop]: 5473 mSDtfsCounter, 5444 mSDsluCounter, 10926 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5455 SdHoareTripleChecker+Valid, 16399 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:07,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5455 Valid, 16399 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:56:07,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2022-12-13 19:56:08,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3750. [2022-12-13 19:56:08,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3750 states, 2649 states have (on average 1.3544733861834655) internal successors, (3588), 2707 states have internal predecessors, (3588), 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) [2022-12-13 19:56:08,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3750 states to 3750 states and 5479 transitions. [2022-12-13 19:56:08,124 INFO L78 Accepts]: Start accepts. Automaton has 3750 states and 5479 transitions. Word has length 53 [2022-12-13 19:56:08,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:56:08,124 INFO L495 AbstractCegarLoop]: Abstraction has 3750 states and 5479 transitions. [2022-12-13 19:56:08,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:08,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3750 states and 5479 transitions. [2022-12-13 19:56:08,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 19:56:08,125 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:08,125 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:08,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:56:08,125 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)] === [2022-12-13 19:56:08,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:08,126 INFO L85 PathProgramCache]: Analyzing trace with hash 347328601, now seen corresponding path program 1 times [2022-12-13 19:56:08,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:08,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222718371] [2022-12-13 19:56:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:08,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:08,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:56:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:08,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:56:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:08,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:56:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:08,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:08,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:56:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:08,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:56:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:08,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:56:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:08,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:56:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 19:56:08,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:08,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222718371] [2022-12-13 19:56:08,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222718371] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:08,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:08,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:56:08,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703340576] [2022-12-13 19:56:08,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:08,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:56:08,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:08,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:56:08,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:56:08,477 INFO L87 Difference]: Start difference. First operand 3750 states and 5479 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:08,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:08,687 INFO L93 Difference]: Finished difference Result 3756 states and 5484 transitions. [2022-12-13 19:56:08,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:56:08,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 58 [2022-12-13 19:56:08,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:08,701 INFO L225 Difference]: With dead ends: 3756 [2022-12-13 19:56:08,702 INFO L226 Difference]: Without dead ends: 3754 [2022-12-13 19:56:08,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:56:08,704 INFO L413 NwaCegarLoop]: 5473 mSDtfsCounter, 5444 mSDsluCounter, 10926 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5454 SdHoareTripleChecker+Valid, 16399 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:08,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5454 Valid, 16399 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:56:08,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2022-12-13 19:56:08,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3754. [2022-12-13 19:56:08,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3754 states, 2652 states have (on average 1.3540723981900453) internal successors, (3591), 2710 states have internal predecessors, (3591), 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) [2022-12-13 19:56:08,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 5482 transitions. [2022-12-13 19:56:08,861 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 5482 transitions. Word has length 58 [2022-12-13 19:56:08,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:56:08,862 INFO L495 AbstractCegarLoop]: Abstraction has 3754 states and 5482 transitions. [2022-12-13 19:56:08,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:08,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 5482 transitions. [2022-12-13 19:56:08,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 19:56:08,863 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:08,864 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:08,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:56:08,864 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)] === [2022-12-13 19:56:08,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:08,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2048716483, now seen corresponding path program 1 times [2022-12-13 19:56:08,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:08,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480317968] [2022-12-13 19:56:08,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:08,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:56:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:56:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:56:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:56:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:56:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:56:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:56:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 19:56:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 19:56:09,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:09,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480317968] [2022-12-13 19:56:09,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480317968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:09,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:09,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:56:09,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505154600] [2022-12-13 19:56:09,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:09,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:56:09,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:09,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:56:09,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:56:09,217 INFO L87 Difference]: Start difference. First operand 3754 states and 5482 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:09,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:09,415 INFO L93 Difference]: Finished difference Result 3760 states and 5487 transitions. [2022-12-13 19:56:09,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:56:09,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 63 [2022-12-13 19:56:09,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:09,432 INFO L225 Difference]: With dead ends: 3760 [2022-12-13 19:56:09,432 INFO L226 Difference]: Without dead ends: 3758 [2022-12-13 19:56:09,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:56:09,436 INFO L413 NwaCegarLoop]: 5473 mSDtfsCounter, 5444 mSDsluCounter, 10926 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5453 SdHoareTripleChecker+Valid, 16399 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:09,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5453 Valid, 16399 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:56:09,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2022-12-13 19:56:09,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3758. [2022-12-13 19:56:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 2655 states have (on average 1.3536723163841808) internal successors, (3594), 2713 states have internal predecessors, (3594), 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) [2022-12-13 19:56:09,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 5485 transitions. [2022-12-13 19:56:09,590 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 5485 transitions. Word has length 63 [2022-12-13 19:56:09,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:56:09,591 INFO L495 AbstractCegarLoop]: Abstraction has 3758 states and 5485 transitions. [2022-12-13 19:56:09,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:09,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 5485 transitions. [2022-12-13 19:56:09,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 19:56:09,592 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:09,593 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:09,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:56:09,593 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)] === [2022-12-13 19:56:09,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:09,593 INFO L85 PathProgramCache]: Analyzing trace with hash 896128665, now seen corresponding path program 1 times [2022-12-13 19:56:09,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:09,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877014092] [2022-12-13 19:56:09,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:09,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:56:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:56:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:56:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:56:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:56:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:56:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:56:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 19:56:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:56:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-13 19:56:09,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:09,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877014092] [2022-12-13 19:56:09,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877014092] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:09,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:09,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:56:09,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607974232] [2022-12-13 19:56:09,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:09,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:56:09,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:09,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:56:09,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:56:09,905 INFO L87 Difference]: Start difference. First operand 3758 states and 5485 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:10,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:10,111 INFO L93 Difference]: Finished difference Result 3764 states and 5490 transitions. [2022-12-13 19:56:10,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:56:10,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 68 [2022-12-13 19:56:10,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:10,128 INFO L225 Difference]: With dead ends: 3764 [2022-12-13 19:56:10,128 INFO L226 Difference]: Without dead ends: 3762 [2022-12-13 19:56:10,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:56:10,131 INFO L413 NwaCegarLoop]: 5473 mSDtfsCounter, 5444 mSDsluCounter, 10926 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5452 SdHoareTripleChecker+Valid, 16399 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:10,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5452 Valid, 16399 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:56:10,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2022-12-13 19:56:10,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 3762. [2022-12-13 19:56:10,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3762 states, 2658 states have (on average 1.353273137697517) internal successors, (3597), 2716 states have internal predecessors, (3597), 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) [2022-12-13 19:56:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3762 states to 3762 states and 5488 transitions. [2022-12-13 19:56:10,290 INFO L78 Accepts]: Start accepts. Automaton has 3762 states and 5488 transitions. Word has length 68 [2022-12-13 19:56:10,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:56:10,290 INFO L495 AbstractCegarLoop]: Abstraction has 3762 states and 5488 transitions. [2022-12-13 19:56:10,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:10,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3762 states and 5488 transitions. [2022-12-13 19:56:10,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 19:56:10,291 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:10,291 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:10,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:56:10,291 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)] === [2022-12-13 19:56:10,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:10,292 INFO L85 PathProgramCache]: Analyzing trace with hash 292627069, now seen corresponding path program 1 times [2022-12-13 19:56:10,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:10,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953419784] [2022-12-13 19:56:10,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:10,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:10,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:56:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:10,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:56:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:10,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:56:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:10,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:10,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:56:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:10,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:56:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:10,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:56:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:10,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:56:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:10,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 19:56:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:10,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:56:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:10,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 19:56:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 19:56:10,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:10,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953419784] [2022-12-13 19:56:10,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953419784] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:10,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:10,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:56:10,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230626578] [2022-12-13 19:56:10,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:10,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:56:10,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:10,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:56:10,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:56:10,617 INFO L87 Difference]: Start difference. First operand 3762 states and 5488 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:10,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:10,912 INFO L93 Difference]: Finished difference Result 3768 states and 5493 transitions. [2022-12-13 19:56:10,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:56:10,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 73 [2022-12-13 19:56:10,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:10,934 INFO L225 Difference]: With dead ends: 3768 [2022-12-13 19:56:10,934 INFO L226 Difference]: Without dead ends: 3766 [2022-12-13 19:56:10,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:56:10,937 INFO L413 NwaCegarLoop]: 5473 mSDtfsCounter, 5444 mSDsluCounter, 10926 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5451 SdHoareTripleChecker+Valid, 16399 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:10,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5451 Valid, 16399 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:56:10,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2022-12-13 19:56:11,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3766. [2022-12-13 19:56:11,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3766 states, 2661 states have (on average 1.3528748590755355) internal successors, (3600), 2719 states have internal predecessors, (3600), 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) [2022-12-13 19:56:11,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 5491 transitions. [2022-12-13 19:56:11,199 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 5491 transitions. Word has length 73 [2022-12-13 19:56:11,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:56:11,199 INFO L495 AbstractCegarLoop]: Abstraction has 3766 states and 5491 transitions. [2022-12-13 19:56:11,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:11,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 5491 transitions. [2022-12-13 19:56:11,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 19:56:11,201 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:11,201 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:11,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:56:11,201 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)] === [2022-12-13 19:56:11,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:11,201 INFO L85 PathProgramCache]: Analyzing trace with hash 577682649, now seen corresponding path program 1 times [2022-12-13 19:56:11,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:11,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817740551] [2022-12-13 19:56:11,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:11,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:11,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:56:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:11,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:56:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:11,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:56:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:11,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:11,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:56:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:11,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:56:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:11,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:56:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:11,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:56:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:11,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 19:56:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:11,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:56:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 19:56:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:11,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 19:56:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-13 19:56:11,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:11,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817740551] [2022-12-13 19:56:11,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817740551] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:11,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:11,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:56:11,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620856858] [2022-12-13 19:56:11,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:11,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:56:11,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:11,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:56:11,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:56:11,532 INFO L87 Difference]: Start difference. First operand 3766 states and 5491 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:11,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:11,845 INFO L93 Difference]: Finished difference Result 3772 states and 5496 transitions. [2022-12-13 19:56:11,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:56:11,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 78 [2022-12-13 19:56:11,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:11,860 INFO L225 Difference]: With dead ends: 3772 [2022-12-13 19:56:11,860 INFO L226 Difference]: Without dead ends: 3770 [2022-12-13 19:56:11,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:56:11,863 INFO L413 NwaCegarLoop]: 5473 mSDtfsCounter, 5444 mSDsluCounter, 10926 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5450 SdHoareTripleChecker+Valid, 16399 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:11,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5450 Valid, 16399 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:56:11,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3770 states. [2022-12-13 19:56:12,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3770 to 3770. [2022-12-13 19:56:12,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3770 states, 2664 states have (on average 1.3524774774774775) internal successors, (3603), 2722 states have internal predecessors, (3603), 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) [2022-12-13 19:56:12,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3770 states to 3770 states and 5494 transitions. [2022-12-13 19:56:12,029 INFO L78 Accepts]: Start accepts. Automaton has 3770 states and 5494 transitions. Word has length 78 [2022-12-13 19:56:12,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:56:12,030 INFO L495 AbstractCegarLoop]: Abstraction has 3770 states and 5494 transitions. [2022-12-13 19:56:12,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:12,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3770 states and 5494 transitions. [2022-12-13 19:56:12,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 19:56:12,031 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:12,031 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:12,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:56:12,031 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)] === [2022-12-13 19:56:12,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:12,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2017669311, now seen corresponding path program 1 times [2022-12-13 19:56:12,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:12,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019882602] [2022-12-13 19:56:12,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:12,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:56:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:12,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:56:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:12,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:56:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:12,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:12,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:56:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:12,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:56:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:12,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 19:56:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:12,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:56:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:12,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:56:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 19:56:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:12,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 19:56:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:12,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 19:56:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:12,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 19:56:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 19:56:12,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:12,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019882602] [2022-12-13 19:56:12,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019882602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:12,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:12,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:56:12,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490805337] [2022-12-13 19:56:12,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:12,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:56:12,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:12,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:56:12,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:56:12,349 INFO L87 Difference]: Start difference. First operand 3770 states and 5494 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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) [2022-12-13 19:56:12,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:12,594 INFO L93 Difference]: Finished difference Result 4063 states and 5851 transitions. [2022-12-13 19:56:12,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:56:12,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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 90 [2022-12-13 19:56:12,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:12,609 INFO L225 Difference]: With dead ends: 4063 [2022-12-13 19:56:12,609 INFO L226 Difference]: Without dead ends: 4061 [2022-12-13 19:56:12,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:56:12,612 INFO L413 NwaCegarLoop]: 5581 mSDtfsCounter, 5145 mSDsluCounter, 11782 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5150 SdHoareTripleChecker+Valid, 17363 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:12,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5150 Valid, 17363 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:56:12,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2022-12-13 19:56:12,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 4055. [2022-12-13 19:56:12,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4055 states, 2860 states have (on average 1.343006993006993) internal successors, (3841), 2925 states have internal predecessors, (3841), 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) [2022-12-13 19:56:12,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4055 states to 4055 states and 5845 transitions. [2022-12-13 19:56:12,804 INFO L78 Accepts]: Start accepts. Automaton has 4055 states and 5845 transitions. Word has length 90 [2022-12-13 19:56:12,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:56:12,804 INFO L495 AbstractCegarLoop]: Abstraction has 4055 states and 5845 transitions. [2022-12-13 19:56:12,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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) [2022-12-13 19:56:12,804 INFO L276 IsEmpty]: Start isEmpty. Operand 4055 states and 5845 transitions. [2022-12-13 19:56:12,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-13 19:56:12,805 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:12,805 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:12,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:56:12,805 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)] === [2022-12-13 19:56:12,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:12,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1856668441, now seen corresponding path program 1 times [2022-12-13 19:56:12,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:12,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874159381] [2022-12-13 19:56:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:12,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:56:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:56:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:56:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:56:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:56:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:56:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:56:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 19:56:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:56:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 19:56:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 19:56:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 19:56:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 19:56:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,106 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-12-13 19:56:13,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:13,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874159381] [2022-12-13 19:56:13,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874159381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:13,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:13,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:56:13,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896348768] [2022-12-13 19:56:13,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:13,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:56:13,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:13,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:56:13,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:56:13,108 INFO L87 Difference]: Start difference. First operand 4055 states and 5845 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:13,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:13,408 INFO L93 Difference]: Finished difference Result 4061 states and 5850 transitions. [2022-12-13 19:56:13,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:56:13,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 88 [2022-12-13 19:56:13,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:13,422 INFO L225 Difference]: With dead ends: 4061 [2022-12-13 19:56:13,422 INFO L226 Difference]: Without dead ends: 4059 [2022-12-13 19:56:13,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:56:13,424 INFO L413 NwaCegarLoop]: 5473 mSDtfsCounter, 5444 mSDsluCounter, 10926 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5448 SdHoareTripleChecker+Valid, 16399 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:13,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5448 Valid, 16399 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:56:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4059 states. [2022-12-13 19:56:13,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4059 to 4059. [2022-12-13 19:56:13,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4059 states, 2863 states have (on average 1.3426475724764233) internal successors, (3844), 2928 states have internal predecessors, (3844), 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) [2022-12-13 19:56:13,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4059 states to 4059 states and 5848 transitions. [2022-12-13 19:56:13,616 INFO L78 Accepts]: Start accepts. Automaton has 4059 states and 5848 transitions. Word has length 88 [2022-12-13 19:56:13,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:56:13,617 INFO L495 AbstractCegarLoop]: Abstraction has 4059 states and 5848 transitions. [2022-12-13 19:56:13,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:13,617 INFO L276 IsEmpty]: Start isEmpty. Operand 4059 states and 5848 transitions. [2022-12-13 19:56:13,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 19:56:13,617 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:13,618 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:13,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:56:13,618 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)] === [2022-12-13 19:56:13,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:13,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1389655167, now seen corresponding path program 1 times [2022-12-13 19:56:13,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:13,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458363029] [2022-12-13 19:56:13,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:13,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:56:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:56:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:56:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:56:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:56:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 19:56:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:56:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:56:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 19:56:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 19:56:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 19:56:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 19:56:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 19:56:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 19:56:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-12-13 19:56:13,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:13,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458363029] [2022-12-13 19:56:13,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458363029] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:13,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:13,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:56:13,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882156793] [2022-12-13 19:56:13,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:13,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:56:13,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:13,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:56:13,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:56:13,972 INFO L87 Difference]: Start difference. First operand 4059 states and 5848 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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) [2022-12-13 19:56:14,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:14,202 INFO L93 Difference]: Finished difference Result 4065 states and 5853 transitions. [2022-12-13 19:56:14,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:56:14,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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 100 [2022-12-13 19:56:14,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:14,214 INFO L225 Difference]: With dead ends: 4065 [2022-12-13 19:56:14,215 INFO L226 Difference]: Without dead ends: 4063 [2022-12-13 19:56:14,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:56:14,217 INFO L413 NwaCegarLoop]: 5473 mSDtfsCounter, 5437 mSDsluCounter, 10926 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5440 SdHoareTripleChecker+Valid, 16399 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:14,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5440 Valid, 16399 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:56:14,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2022-12-13 19:56:14,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 4063. [2022-12-13 19:56:14,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4063 states, 2866 states have (on average 1.3422889043963713) internal successors, (3847), 2931 states have internal predecessors, (3847), 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) [2022-12-13 19:56:14,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4063 states to 4063 states and 5851 transitions. [2022-12-13 19:56:14,438 INFO L78 Accepts]: Start accepts. Automaton has 4063 states and 5851 transitions. Word has length 100 [2022-12-13 19:56:14,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:56:14,439 INFO L495 AbstractCegarLoop]: Abstraction has 4063 states and 5851 transitions. [2022-12-13 19:56:14,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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) [2022-12-13 19:56:14,439 INFO L276 IsEmpty]: Start isEmpty. Operand 4063 states and 5851 transitions. [2022-12-13 19:56:14,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 19:56:14,440 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:14,440 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:14,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:56:14,440 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)] === [2022-12-13 19:56:14,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:14,441 INFO L85 PathProgramCache]: Analyzing trace with hash -15354539, now seen corresponding path program 1 times [2022-12-13 19:56:14,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:14,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511553855] [2022-12-13 19:56:14,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:14,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:14,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:56:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:14,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:56:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:14,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:56:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:14,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:14,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:56:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:14,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:56:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:14,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 19:56:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:14,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:56:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:14,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:56:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:14,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 19:56:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:14,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 19:56:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:14,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 19:56:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 19:56:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:14,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 19:56:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:14,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 19:56:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:14,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:56:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-13 19:56:14,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:14,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511553855] [2022-12-13 19:56:14,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511553855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:14,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:14,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:56:14,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635662835] [2022-12-13 19:56:14,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:14,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:56:14,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:14,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:56:14,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:56:14,732 INFO L87 Difference]: Start difference. First operand 4063 states and 5851 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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) [2022-12-13 19:56:14,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:14,965 INFO L93 Difference]: Finished difference Result 4069 states and 5856 transitions. [2022-12-13 19:56:14,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:56:14,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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 105 [2022-12-13 19:56:14,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:14,979 INFO L225 Difference]: With dead ends: 4069 [2022-12-13 19:56:14,979 INFO L226 Difference]: Without dead ends: 4067 [2022-12-13 19:56:14,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:56:14,982 INFO L413 NwaCegarLoop]: 5473 mSDtfsCounter, 5437 mSDsluCounter, 10926 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5439 SdHoareTripleChecker+Valid, 16399 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:14,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5439 Valid, 16399 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:56:14,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4067 states. [2022-12-13 19:56:15,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4067 to 4067. [2022-12-13 19:56:15,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4067 states, 2869 states have (on average 1.3419309864064133) internal successors, (3850), 2934 states have internal predecessors, (3850), 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) [2022-12-13 19:56:15,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4067 states to 4067 states and 5854 transitions. [2022-12-13 19:56:15,327 INFO L78 Accepts]: Start accepts. Automaton has 4067 states and 5854 transitions. Word has length 105 [2022-12-13 19:56:15,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:56:15,328 INFO L495 AbstractCegarLoop]: Abstraction has 4067 states and 5854 transitions. [2022-12-13 19:56:15,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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) [2022-12-13 19:56:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 4067 states and 5854 transitions. [2022-12-13 19:56:15,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 19:56:15,329 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:15,329 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:15,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:56:15,330 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)] === [2022-12-13 19:56:15,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:15,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1704323523, now seen corresponding path program 1 times [2022-12-13 19:56:15,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:15,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245134437] [2022-12-13 19:56:15,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:15,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:56:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:56:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:56:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:56:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:56:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:56:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:56:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 19:56:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:56:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 19:56:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 19:56:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 19:56:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 19:56:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 19:56:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 19:56:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 19:56:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:15,699 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-12-13 19:56:15,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:15,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245134437] [2022-12-13 19:56:15,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245134437] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:15,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:15,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:56:15,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121815523] [2022-12-13 19:56:15,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:15,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:56:15,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:15,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:56:15,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:56:15,701 INFO L87 Difference]: Start difference. First operand 4067 states and 5854 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:15,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:15,964 INFO L93 Difference]: Finished difference Result 4073 states and 5859 transitions. [2022-12-13 19:56:15,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:56:15,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 103 [2022-12-13 19:56:15,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:15,979 INFO L225 Difference]: With dead ends: 4073 [2022-12-13 19:56:15,979 INFO L226 Difference]: Without dead ends: 4069 [2022-12-13 19:56:15,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:56:15,982 INFO L413 NwaCegarLoop]: 5473 mSDtfsCounter, 5444 mSDsluCounter, 10926 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5445 SdHoareTripleChecker+Valid, 16399 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:15,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5445 Valid, 16399 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:56:15,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4069 states. [2022-12-13 19:56:16,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4069 to 4069. [2022-12-13 19:56:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4069 states, 2871 states have (on average 1.3413444792755138) internal successors, (3851), 2935 states have internal predecessors, (3851), 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) [2022-12-13 19:56:16,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 5855 transitions. [2022-12-13 19:56:16,213 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 5855 transitions. Word has length 103 [2022-12-13 19:56:16,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:56:16,214 INFO L495 AbstractCegarLoop]: Abstraction has 4069 states and 5855 transitions. [2022-12-13 19:56:16,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:16,214 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 5855 transitions. [2022-12-13 19:56:16,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-13 19:56:16,215 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:16,215 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:16,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:56:16,215 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)] === [2022-12-13 19:56:16,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:16,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1718005657, now seen corresponding path program 1 times [2022-12-13 19:56:16,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:16,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39036717] [2022-12-13 19:56:16,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:16,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:56:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:56:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:56:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:56:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:56:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:56:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:56:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 19:56:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:56:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 19:56:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 19:56:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 19:56:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 19:56:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 19:56:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 19:56:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 19:56:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 19:56:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:16,492 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-12-13 19:56:16,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:16,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39036717] [2022-12-13 19:56:16,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39036717] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:16,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:16,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:56:16,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779388902] [2022-12-13 19:56:16,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:16,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:56:16,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:16,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:56:16,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:56:16,493 INFO L87 Difference]: Start difference. First operand 4069 states and 5855 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:16,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:16,735 INFO L93 Difference]: Finished difference Result 4069 states and 5855 transitions. [2022-12-13 19:56:16,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:56:16,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 108 [2022-12-13 19:56:16,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:16,746 INFO L225 Difference]: With dead ends: 4069 [2022-12-13 19:56:16,746 INFO L226 Difference]: Without dead ends: 3976 [2022-12-13 19:56:16,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:56:16,748 INFO L413 NwaCegarLoop]: 5471 mSDtfsCounter, 5440 mSDsluCounter, 10925 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5440 SdHoareTripleChecker+Valid, 16396 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:16,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5440 Valid, 16396 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:56:16,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3976 states. [2022-12-13 19:56:16,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3976 to 3976. [2022-12-13 19:56:16,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3976 states, 2813 states have (on average 1.3473160327052969) internal successors, (3790), 2875 states have internal predecessors, (3790), 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) [2022-12-13 19:56:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3976 states to 3976 states and 5753 transitions. [2022-12-13 19:56:17,021 INFO L78 Accepts]: Start accepts. Automaton has 3976 states and 5753 transitions. Word has length 108 [2022-12-13 19:56:17,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:56:17,021 INFO L495 AbstractCegarLoop]: Abstraction has 3976 states and 5753 transitions. [2022-12-13 19:56:17,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-13 19:56:17,021 INFO L276 IsEmpty]: Start isEmpty. Operand 3976 states and 5753 transitions. [2022-12-13 19:56:17,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-12-13 19:56:17,031 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:17,031 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:17,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:56:17,032 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)] === [2022-12-13 19:56:17,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1724955443, now seen corresponding path program 1 times [2022-12-13 19:56:17,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:17,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816772490] [2022-12-13 19:56:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:56:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:56:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 19:56:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:56:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:56:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:56:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:56:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:56:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:56:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:56:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:56:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 19:56:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 19:56:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 19:56:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 19:56:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 19:56:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 19:56:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 19:56:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 19:56:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 19:56:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 19:56:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-12-13 19:56:17,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:17,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816772490] [2022-12-13 19:56:17,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816772490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:17,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:17,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:56:17,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466662962] [2022-12-13 19:56:17,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:17,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:56:17,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:17,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:56:17,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:56:17,431 INFO L87 Difference]: Start difference. First operand 3976 states and 5753 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 19:56:19,471 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 [] [2022-12-13 19:56:24,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:24,886 INFO L93 Difference]: Finished difference Result 8126 states and 11762 transitions. [2022-12-13 19:56:24,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:56:24,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (25), 3 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 179 [2022-12-13 19:56:24,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:24,899 INFO L225 Difference]: With dead ends: 8126 [2022-12-13 19:56:24,899 INFO L226 Difference]: Without dead ends: 4167 [2022-12-13 19:56:24,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:56:24,914 INFO L413 NwaCegarLoop]: 2833 mSDtfsCounter, 6499 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 2978 mSolverCounterSat, 2872 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6751 SdHoareTripleChecker+Valid, 4087 SdHoareTripleChecker+Invalid, 5851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2872 IncrementalHoareTripleChecker+Valid, 2978 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:24,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6751 Valid, 4087 Invalid, 5851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2872 Valid, 2978 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-12-13 19:56:24,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2022-12-13 19:56:25,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3975. [2022-12-13 19:56:25,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3975 states, 2812 states have (on average 1.346728307254623) internal successors, (3787), 2874 states have internal predecessors, (3787), 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) [2022-12-13 19:56:25,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3975 states to 3975 states and 5750 transitions. [2022-12-13 19:56:25,205 INFO L78 Accepts]: Start accepts. Automaton has 3975 states and 5750 transitions. Word has length 179 [2022-12-13 19:56:25,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:56:25,206 INFO L495 AbstractCegarLoop]: Abstraction has 3975 states and 5750 transitions. [2022-12-13 19:56:25,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 19:56:25,206 INFO L276 IsEmpty]: Start isEmpty. Operand 3975 states and 5750 transitions. [2022-12-13 19:56:25,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-12-13 19:56:25,212 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:25,212 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:25,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 19:56:25,212 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)] === [2022-12-13 19:56:25,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:25,212 INFO L85 PathProgramCache]: Analyzing trace with hash 632667329, now seen corresponding path program 1 times [2022-12-13 19:56:25,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:25,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197440399] [2022-12-13 19:56:25,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:25,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:56:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:56:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 19:56:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:56:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:56:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:56:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:56:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:56:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:56:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:56:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:56:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 19:56:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 19:56:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 19:56:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 19:56:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 19:56:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 19:56:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 19:56:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 19:56:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 19:56:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 19:56:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:25,957 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-12-13 19:56:25,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:25,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197440399] [2022-12-13 19:56:25,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197440399] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:25,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:25,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:56:25,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859091477] [2022-12-13 19:56:25,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:25,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:56:25,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:25,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:56:25,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:56:25,959 INFO L87 Difference]: Start difference. First operand 3975 states and 5750 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 19:56:28,000 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 [] [2022-12-13 19:56:36,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:36,003 INFO L93 Difference]: Finished difference Result 4173 states and 6036 transitions. [2022-12-13 19:56:36,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 19:56:36,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (25), 4 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 179 [2022-12-13 19:56:36,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:36,013 INFO L225 Difference]: With dead ends: 4173 [2022-12-13 19:56:36,013 INFO L226 Difference]: Without dead ends: 4171 [2022-12-13 19:56:36,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:56:36,015 INFO L413 NwaCegarLoop]: 2881 mSDtfsCounter, 6495 mSDsluCounter, 6777 mSDsCounter, 0 mSdLazyCounter, 9279 mSolverCounterSat, 2804 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6759 SdHoareTripleChecker+Valid, 9658 SdHoareTripleChecker+Invalid, 12084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2804 IncrementalHoareTripleChecker+Valid, 9279 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:36,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6759 Valid, 9658 Invalid, 12084 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2804 Valid, 9279 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-12-13 19:56:36,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4171 states. [2022-12-13 19:56:36,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4171 to 3975. [2022-12-13 19:56:36,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3975 states, 2812 states have (on average 1.3463726884779517) internal successors, (3786), 2874 states have internal predecessors, (3786), 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) [2022-12-13 19:56:36,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3975 states to 3975 states and 5749 transitions. [2022-12-13 19:56:36,267 INFO L78 Accepts]: Start accepts. Automaton has 3975 states and 5749 transitions. Word has length 179 [2022-12-13 19:56:36,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:56:36,268 INFO L495 AbstractCegarLoop]: Abstraction has 3975 states and 5749 transitions. [2022-12-13 19:56:36,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 19:56:36,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3975 states and 5749 transitions. [2022-12-13 19:56:36,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-12-13 19:56:36,282 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:36,282 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:36,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 19:56:36,282 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)] === [2022-12-13 19:56:36,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:36,282 INFO L85 PathProgramCache]: Analyzing trace with hash -793428092, now seen corresponding path program 1 times [2022-12-13 19:56:36,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:36,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866647392] [2022-12-13 19:56:36,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:36,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:56:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:56:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 19:56:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:56:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:56:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:56:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:56:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:56:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:56:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:56:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:56:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 19:56:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 19:56:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 19:56:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 19:56:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 19:56:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 19:56:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 19:56:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 19:56:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 19:56:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 19:56:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-12-13 19:56:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-12-13 19:56:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-12-13 19:56:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 19:56:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 19:56:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-12-13 19:56:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-12-13 19:56:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-12-13 19:56:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:56:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:56:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2022-12-13 19:56:36,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:36,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866647392] [2022-12-13 19:56:36,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866647392] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:36,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:36,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:56:36,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362313097] [2022-12-13 19:56:36,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:36,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:56:36,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:36,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:56:36,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:56:36,887 INFO L87 Difference]: Start difference. First operand 3975 states and 5749 transitions. Second operand has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (38), 5 states have call predecessors, (38), 2 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) [2022-12-13 19:56:38,915 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 [] [2022-12-13 19:56:40,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:56:42,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:56:53,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:53,950 INFO L93 Difference]: Finished difference Result 4580 states and 6647 transitions. [2022-12-13 19:56:53,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:56:53,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (38), 5 states have call predecessors, (38), 2 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) Word has length 241 [2022-12-13 19:56:53,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:53,961 INFO L225 Difference]: With dead ends: 4580 [2022-12-13 19:56:53,961 INFO L226 Difference]: Without dead ends: 4578 [2022-12-13 19:56:53,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:56:53,962 INFO L413 NwaCegarLoop]: 2697 mSDtfsCounter, 5795 mSDsluCounter, 9381 mSDsCounter, 0 mSdLazyCounter, 13867 mSolverCounterSat, 3551 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5933 SdHoareTripleChecker+Valid, 12078 SdHoareTripleChecker+Invalid, 17421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3551 IncrementalHoareTripleChecker+Valid, 13867 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:53,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5933 Valid, 12078 Invalid, 17421 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3551 Valid, 13867 Invalid, 3 Unknown, 0 Unchecked, 16.3s Time] [2022-12-13 19:56:53,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4578 states. [2022-12-13 19:56:54,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4578 to 3980. [2022-12-13 19:56:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3980 states, 2815 states have (on average 1.3456483126110124) internal successors, (3788), 2878 states have internal predecessors, (3788), 981 states have call successors, (981), 183 states have call predecessors, (981), 182 states have return successors, (987), 962 states have call predecessors, (987), 981 states have call successors, (987) [2022-12-13 19:56:54,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 5756 transitions. [2022-12-13 19:56:54,224 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 5756 transitions. Word has length 241 [2022-12-13 19:56:54,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:56:54,224 INFO L495 AbstractCegarLoop]: Abstraction has 3980 states and 5756 transitions. [2022-12-13 19:56:54,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (38), 5 states have call predecessors, (38), 2 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) [2022-12-13 19:56:54,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 5756 transitions. [2022-12-13 19:56:54,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2022-12-13 19:56:54,249 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:54,249 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:54,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 19:56:54,249 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)] === [2022-12-13 19:56:54,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:54,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1933732171, now seen corresponding path program 1 times [2022-12-13 19:56:54,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:54,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033853043] [2022-12-13 19:56:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:54,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:54,755 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:56:54,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350499218] [2022-12-13 19:56:54,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:54,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:56:54,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:56:54,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:56:54,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:56:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:56:56,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 9093 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:56:56,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:56:56,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 530 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-12-13 19:56:56,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:56:56,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:56:56,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033853043] [2022-12-13 19:56:56,937 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:56:56,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350499218] [2022-12-13 19:56:56,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350499218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:56:56,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:56:56,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:56:56,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674934752] [2022-12-13 19:56:56,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:56:56,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:56:56,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:56:56,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:56:56,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:56:56,940 INFO L87 Difference]: Start difference. First operand 3980 states and 5756 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-12-13 19:56:57,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:56:57,273 INFO L93 Difference]: Finished difference Result 7955 states and 11613 transitions. [2022-12-13 19:56:57,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:56:57,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 607 [2022-12-13 19:56:57,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:56:57,294 INFO L225 Difference]: With dead ends: 7955 [2022-12-13 19:56:57,294 INFO L226 Difference]: Without dead ends: 3992 [2022-12-13 19:56:57,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:56:57,309 INFO L413 NwaCegarLoop]: 5387 mSDtfsCounter, 12 mSDsluCounter, 5381 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 10768 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:56:57,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 10768 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:56:57,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3992 states. [2022-12-13 19:56:57,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3992 to 3983. [2022-12-13 19:56:57,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3983 states, 2818 states have (on average 1.3452803406671399) internal successors, (3791), 2881 states have internal predecessors, (3791), 981 states have call successors, (981), 183 states have call predecessors, (981), 182 states have return successors, (987), 962 states have call predecessors, (987), 981 states have call successors, (987) [2022-12-13 19:56:57,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3983 states to 3983 states and 5759 transitions. [2022-12-13 19:56:57,565 INFO L78 Accepts]: Start accepts. Automaton has 3983 states and 5759 transitions. Word has length 607 [2022-12-13 19:56:57,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:56:57,566 INFO L495 AbstractCegarLoop]: Abstraction has 3983 states and 5759 transitions. [2022-12-13 19:56:57,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-12-13 19:56:57,566 INFO L276 IsEmpty]: Start isEmpty. Operand 3983 states and 5759 transitions. [2022-12-13 19:56:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2022-12-13 19:56:57,589 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:56:57,589 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:56:57,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:56:57,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 19:56:57,791 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)] === [2022-12-13 19:56:57,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:56:57,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1584050002, now seen corresponding path program 1 times [2022-12-13 19:56:57,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:56:57,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208109536] [2022-12-13 19:56:57,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:57,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:56:58,293 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:56:58,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142546836] [2022-12-13 19:56:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:56:58,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:56:58,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:56:58,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:56:58,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:57:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:01,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 9113 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:57:01,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:57:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2022-12-13 19:57:01,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:57:01,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:01,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208109536] [2022-12-13 19:57:01,166 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:57:01,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142546836] [2022-12-13 19:57:01,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142546836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:57:01,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:57:01,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:57:01,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511270405] [2022-12-13 19:57:01,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:57:01,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:57:01,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:01,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:57:01,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:57:01,169 INFO L87 Difference]: Start difference. First operand 3983 states and 5759 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 2 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-12-13 19:57:01,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:57:01,453 INFO L93 Difference]: Finished difference Result 8118 states and 11840 transitions. [2022-12-13 19:57:01,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:57:01,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 2 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 611 [2022-12-13 19:57:01,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:57:01,467 INFO L225 Difference]: With dead ends: 8118 [2022-12-13 19:57:01,468 INFO L226 Difference]: Without dead ends: 4152 [2022-12-13 19:57:01,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:57:01,518 INFO L413 NwaCegarLoop]: 5445 mSDtfsCounter, 167 mSDsluCounter, 5402 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 10847 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:57:01,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 10847 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:57:01,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4152 states. [2022-12-13 19:57:01,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4152 to 3984. [2022-12-13 19:57:01,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3984 states, 2819 states have (on average 1.3451578573962397) internal successors, (3792), 2882 states have internal predecessors, (3792), 981 states have call successors, (981), 183 states have call predecessors, (981), 182 states have return successors, (987), 962 states have call predecessors, (987), 981 states have call successors, (987) [2022-12-13 19:57:01,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3984 states to 3984 states and 5760 transitions. [2022-12-13 19:57:01,772 INFO L78 Accepts]: Start accepts. Automaton has 3984 states and 5760 transitions. Word has length 611 [2022-12-13 19:57:01,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:57:01,773 INFO L495 AbstractCegarLoop]: Abstraction has 3984 states and 5760 transitions. [2022-12-13 19:57:01,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 2 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-12-13 19:57:01,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3984 states and 5760 transitions. [2022-12-13 19:57:01,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2022-12-13 19:57:01,789 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:57:01,790 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:57:01,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 19:57:01,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 19:57:01,992 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)] === [2022-12-13 19:57:01,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:01,993 INFO L85 PathProgramCache]: Analyzing trace with hash 750032058, now seen corresponding path program 1 times [2022-12-13 19:57:01,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:01,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931407091] [2022-12-13 19:57:01,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:01,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:02,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:57:02,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [735196257] [2022-12-13 19:57:02,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:02,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:57:02,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:57:02,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:57:02,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:57:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:05,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 9366 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:57:05,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:57:05,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 594 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2022-12-13 19:57:05,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:57:05,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:05,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931407091] [2022-12-13 19:57:05,253 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:57:05,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735196257] [2022-12-13 19:57:05,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735196257] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:57:05,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:57:05,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:57:05,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413800102] [2022-12-13 19:57:05,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:57:05,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:57:05,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:05,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:57:05,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:57:05,255 INFO L87 Difference]: Start difference. First operand 3984 states and 5760 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) [2022-12-13 19:57:05,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:57:05,587 INFO L93 Difference]: Finished difference Result 7960 states and 11615 transitions. [2022-12-13 19:57:05,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:57:05,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) Word has length 648 [2022-12-13 19:57:05,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:57:05,600 INFO L225 Difference]: With dead ends: 7960 [2022-12-13 19:57:05,601 INFO L226 Difference]: Without dead ends: 3993 [2022-12-13 19:57:05,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 646 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:57:05,613 INFO L413 NwaCegarLoop]: 5390 mSDtfsCounter, 7 mSDsluCounter, 5381 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10771 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:57:05,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 10771 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:57:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3993 states. [2022-12-13 19:57:05,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3993 to 3990. [2022-12-13 19:57:05,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3990 states, 2825 states have (on average 1.344424778761062) internal successors, (3798), 2888 states have internal predecessors, (3798), 981 states have call successors, (981), 183 states have call predecessors, (981), 182 states have return successors, (987), 962 states have call predecessors, (987), 981 states have call successors, (987) [2022-12-13 19:57:05,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3990 states to 3990 states and 5766 transitions. [2022-12-13 19:57:05,874 INFO L78 Accepts]: Start accepts. Automaton has 3990 states and 5766 transitions. Word has length 648 [2022-12-13 19:57:05,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:57:05,874 INFO L495 AbstractCegarLoop]: Abstraction has 3990 states and 5766 transitions. [2022-12-13 19:57:05,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) [2022-12-13 19:57:05,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3990 states and 5766 transitions. [2022-12-13 19:57:05,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2022-12-13 19:57:05,889 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:57:05,889 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:57:05,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 19:57:06,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:57:06,091 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)] === [2022-12-13 19:57:06,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:06,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1374219588, now seen corresponding path program 1 times [2022-12-13 19:57:06,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:06,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703484134] [2022-12-13 19:57:06,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:06,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:06,613 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:57:06,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791718778] [2022-12-13 19:57:06,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:06,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:57:06,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:57:06,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:57:06,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:57:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:09,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 9363 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:57:09,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:57:09,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 587 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2022-12-13 19:57:09,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:57:09,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:09,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703484134] [2022-12-13 19:57:09,536 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:57:09,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791718778] [2022-12-13 19:57:09,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791718778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:57:09,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:57:09,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:57:09,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206776713] [2022-12-13 19:57:09,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:57:09,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:57:09,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:09,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:57:09,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:57:09,538 INFO L87 Difference]: Start difference. First operand 3990 states and 5766 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2022-12-13 19:57:09,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:57:09,812 INFO L93 Difference]: Finished difference Result 7971 states and 11614 transitions. [2022-12-13 19:57:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:57:09,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 648 [2022-12-13 19:57:09,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:57:09,825 INFO L225 Difference]: With dead ends: 7971 [2022-12-13 19:57:09,825 INFO L226 Difference]: Without dead ends: 3998 [2022-12-13 19:57:09,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 646 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:57:09,837 INFO L413 NwaCegarLoop]: 5401 mSDtfsCounter, 8 mSDsluCounter, 5390 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10791 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:57:09,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 10791 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:57:09,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2022-12-13 19:57:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3995. [2022-12-13 19:57:10,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3995 states, 2829 states have (on average 1.3442912689996465) internal successors, (3803), 2892 states have internal predecessors, (3803), 982 states have call successors, (982), 183 states have call predecessors, (982), 182 states have return successors, (988), 963 states have call predecessors, (988), 982 states have call successors, (988) [2022-12-13 19:57:10,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 5773 transitions. [2022-12-13 19:57:10,125 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 5773 transitions. Word has length 648 [2022-12-13 19:57:10,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:57:10,125 INFO L495 AbstractCegarLoop]: Abstraction has 3995 states and 5773 transitions. [2022-12-13 19:57:10,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2022-12-13 19:57:10,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 5773 transitions. [2022-12-13 19:57:10,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2022-12-13 19:57:10,140 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:57:10,140 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 8, 8, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:57:10,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 19:57:10,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:57:10,342 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)] === [2022-12-13 19:57:10,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:10,343 INFO L85 PathProgramCache]: Analyzing trace with hash -755027778, now seen corresponding path program 1 times [2022-12-13 19:57:10,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:10,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502179645] [2022-12-13 19:57:10,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:10,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:10,880 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:57:10,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049006256] [2022-12-13 19:57:10,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:10,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:57:10,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:57:10,881 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:57:10,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:57:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:13,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 9381 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:57:13,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:57:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 1007 trivial. 0 not checked. [2022-12-13 19:57:13,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:57:13,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:13,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502179645] [2022-12-13 19:57:13,742 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:57:13,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049006256] [2022-12-13 19:57:13,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049006256] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:57:13,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:57:13,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:57:13,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850501654] [2022-12-13 19:57:13,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:57:13,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:57:13,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:13,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:57:13,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:57:13,744 INFO L87 Difference]: Start difference. First operand 3995 states and 5773 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2022-12-13 19:57:14,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:57:14,010 INFO L93 Difference]: Finished difference Result 8001 states and 11645 transitions. [2022-12-13 19:57:14,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:57:14,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) Word has length 653 [2022-12-13 19:57:14,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:57:14,025 INFO L225 Difference]: With dead ends: 8001 [2022-12-13 19:57:14,025 INFO L226 Difference]: Without dead ends: 4023 [2022-12-13 19:57:14,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:57:14,037 INFO L413 NwaCegarLoop]: 5431 mSDtfsCounter, 17 mSDsluCounter, 5405 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 10836 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:57:14,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 10836 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:57:14,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4023 states. [2022-12-13 19:57:14,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4023 to 3997. [2022-12-13 19:57:14,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3997 states, 2831 states have (on average 1.3440480395619923) internal successors, (3805), 2894 states have internal predecessors, (3805), 982 states have call successors, (982), 183 states have call predecessors, (982), 182 states have return successors, (988), 963 states have call predecessors, (988), 982 states have call successors, (988) [2022-12-13 19:57:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 5775 transitions. [2022-12-13 19:57:14,306 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 5775 transitions. Word has length 653 [2022-12-13 19:57:14,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:57:14,306 INFO L495 AbstractCegarLoop]: Abstraction has 3997 states and 5775 transitions. [2022-12-13 19:57:14,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2022-12-13 19:57:14,306 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 5775 transitions. [2022-12-13 19:57:14,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2022-12-13 19:57:14,321 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:57:14,321 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 8, 8, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:57:14,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 19:57:14,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:57:14,524 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)] === [2022-12-13 19:57:14,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:14,525 INFO L85 PathProgramCache]: Analyzing trace with hash -504309559, now seen corresponding path program 1 times [2022-12-13 19:57:14,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:14,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019804839] [2022-12-13 19:57:14,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:14,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:15,018 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:57:15,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1645817121] [2022-12-13 19:57:15,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:15,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:57:15,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:57:15,020 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:57:15,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:57:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:17,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 9164 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:57:17,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:57:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2022-12-13 19:57:17,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:57:17,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:17,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019804839] [2022-12-13 19:57:17,955 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:57:17,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645817121] [2022-12-13 19:57:17,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645817121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:57:17,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:57:17,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:57:17,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364321827] [2022-12-13 19:57:17,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:57:17,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:57:17,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:17,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:57:17,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:57:17,957 INFO L87 Difference]: Start difference. First operand 3997 states and 5775 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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) [2022-12-13 19:57:18,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:57:18,293 INFO L93 Difference]: Finished difference Result 7982 states and 11628 transitions. [2022-12-13 19:57:18,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:57:18,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 628 [2022-12-13 19:57:18,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:57:18,305 INFO L225 Difference]: With dead ends: 7982 [2022-12-13 19:57:18,305 INFO L226 Difference]: Without dead ends: 4002 [2022-12-13 19:57:18,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:57:18,314 INFO L413 NwaCegarLoop]: 5402 mSDtfsCounter, 3 mSDsluCounter, 5387 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10789 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:57:18,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10789 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:57:18,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2022-12-13 19:57:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 3998. [2022-12-13 19:57:18,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3998 states, 2832 states have (on average 1.3439265536723164) internal successors, (3806), 2895 states have internal predecessors, (3806), 982 states have call successors, (982), 183 states have call predecessors, (982), 182 states have return successors, (988), 963 states have call predecessors, (988), 982 states have call successors, (988) [2022-12-13 19:57:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 5776 transitions. [2022-12-13 19:57:18,572 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 5776 transitions. Word has length 628 [2022-12-13 19:57:18,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:57:18,572 INFO L495 AbstractCegarLoop]: Abstraction has 3998 states and 5776 transitions. [2022-12-13 19:57:18,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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) [2022-12-13 19:57:18,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 5776 transitions. [2022-12-13 19:57:18,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-12-13 19:57:18,586 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:57:18,586 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:57:18,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 19:57:18,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 19:57:18,788 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)] === [2022-12-13 19:57:18,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:18,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1736143703, now seen corresponding path program 1 times [2022-12-13 19:57:18,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:18,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331140340] [2022-12-13 19:57:18,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:18,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:19,267 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:57:19,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594851181] [2022-12-13 19:57:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:19,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:57:19,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:57:19,269 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:57:19,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 19:57:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:22,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 9388 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:57:22,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:57:22,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 593 proven. 1 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2022-12-13 19:57:22,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:57:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1114 trivial. 0 not checked. [2022-12-13 19:57:22,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:22,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331140340] [2022-12-13 19:57:22,745 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:57:22,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594851181] [2022-12-13 19:57:22,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594851181] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:57:22,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:57:22,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 19:57:22,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411630814] [2022-12-13 19:57:22,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:57:22,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:57:22,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:22,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:57:22,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:57:22,750 INFO L87 Difference]: Start difference. First operand 3998 states and 5776 transitions. Second operand has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 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) [2022-12-13 19:57:23,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:57:23,143 INFO L93 Difference]: Finished difference Result 8009 states and 11680 transitions. [2022-12-13 19:57:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:57:23,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 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 656 [2022-12-13 19:57:23,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:57:23,156 INFO L225 Difference]: With dead ends: 8009 [2022-12-13 19:57:23,156 INFO L226 Difference]: Without dead ends: 4028 [2022-12-13 19:57:23,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1310 GetRequests, 1306 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:57:23,168 INFO L413 NwaCegarLoop]: 5387 mSDtfsCounter, 60 mSDsluCounter, 5381 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 10768 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:57:23,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 10768 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:57:23,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2022-12-13 19:57:23,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 4028. [2022-12-13 19:57:23,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4028 states, 2862 states have (on average 1.3424178895877008) internal successors, (3842), 2925 states have internal predecessors, (3842), 982 states have call successors, (982), 183 states have call predecessors, (982), 182 states have return successors, (988), 963 states have call predecessors, (988), 982 states have call successors, (988) [2022-12-13 19:57:23,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4028 states to 4028 states and 5812 transitions. [2022-12-13 19:57:23,483 INFO L78 Accepts]: Start accepts. Automaton has 4028 states and 5812 transitions. Word has length 656 [2022-12-13 19:57:23,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:57:23,483 INFO L495 AbstractCegarLoop]: Abstraction has 4028 states and 5812 transitions. [2022-12-13 19:57:23,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 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) [2022-12-13 19:57:23,484 INFO L276 IsEmpty]: Start isEmpty. Operand 4028 states and 5812 transitions. [2022-12-13 19:57:23,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2022-12-13 19:57:23,497 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:57:23,498 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:57:23,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 19:57:23,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 19:57:23,699 INFO L420 AbstractCegarLoop]: === Iteration 24 === 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)] === [2022-12-13 19:57:23,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:23,700 INFO L85 PathProgramCache]: Analyzing trace with hash -862884020, now seen corresponding path program 1 times [2022-12-13 19:57:23,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:23,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352229035] [2022-12-13 19:57:23,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:23,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:24,231 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:57:24,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015922811] [2022-12-13 19:57:24,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:24,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:57:24,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:57:24,232 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:57:24,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 19:57:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:27,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 9448 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:57:27,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:57:27,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 593 proven. 28 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2022-12-13 19:57:27,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:57:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 1114 trivial. 0 not checked. [2022-12-13 19:57:27,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:27,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352229035] [2022-12-13 19:57:27,770 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:57:27,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015922811] [2022-12-13 19:57:27,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015922811] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:57:27,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:57:27,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-12-13 19:57:27,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453733795] [2022-12-13 19:57:27,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:57:27,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:57:27,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:27,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:57:27,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:57:27,773 INFO L87 Difference]: Start difference. First operand 4028 states and 5812 transitions. Second operand has 8 states, 8 states have (on average 53.875) internal successors, (431), 8 states have internal predecessors, (431), 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) [2022-12-13 19:57:28,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:57:28,240 INFO L93 Difference]: Finished difference Result 8063 states and 11743 transitions. [2022-12-13 19:57:28,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 19:57:28,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 53.875) internal successors, (431), 8 states have internal predecessors, (431), 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 668 [2022-12-13 19:57:28,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:57:28,253 INFO L225 Difference]: With dead ends: 8063 [2022-12-13 19:57:28,254 INFO L226 Difference]: Without dead ends: 4052 [2022-12-13 19:57:28,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1334 GetRequests, 1324 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:57:28,265 INFO L413 NwaCegarLoop]: 5387 mSDtfsCounter, 75 mSDsluCounter, 16143 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 21530 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:57:28,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 21530 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:57:28,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2022-12-13 19:57:28,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 4052. [2022-12-13 19:57:28,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4052 states, 2886 states have (on average 1.3416493416493416) internal successors, (3872), 2949 states have internal predecessors, (3872), 982 states have call successors, (982), 183 states have call predecessors, (982), 182 states have return successors, (988), 963 states have call predecessors, (988), 982 states have call successors, (988) [2022-12-13 19:57:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4052 states to 4052 states and 5842 transitions. [2022-12-13 19:57:28,533 INFO L78 Accepts]: Start accepts. Automaton has 4052 states and 5842 transitions. Word has length 668 [2022-12-13 19:57:28,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:57:28,534 INFO L495 AbstractCegarLoop]: Abstraction has 4052 states and 5842 transitions. [2022-12-13 19:57:28,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 53.875) internal successors, (431), 8 states have internal predecessors, (431), 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) [2022-12-13 19:57:28,534 INFO L276 IsEmpty]: Start isEmpty. Operand 4052 states and 5842 transitions. [2022-12-13 19:57:28,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2022-12-13 19:57:28,548 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:57:28,548 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:57:28,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 19:57:28,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 19:57:28,750 INFO L420 AbstractCegarLoop]: === Iteration 25 === 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)] === [2022-12-13 19:57:28,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:28,750 INFO L85 PathProgramCache]: Analyzing trace with hash -2068160849, now seen corresponding path program 1 times [2022-12-13 19:57:28,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:28,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829294839] [2022-12-13 19:57:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:28,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:29,217 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:57:29,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400805550] [2022-12-13 19:57:29,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:29,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:57:29,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:57:29,218 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:57:29,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 19:57:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:32,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 9270 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:57:32,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:57:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 545 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-12-13 19:57:32,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:57:32,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:32,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829294839] [2022-12-13 19:57:32,398 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:57:32,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400805550] [2022-12-13 19:57:32,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400805550] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:57:32,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:57:32,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:57:32,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298229110] [2022-12-13 19:57:32,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:57:32,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:57:32,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:32,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:57:32,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:57:32,401 INFO L87 Difference]: Start difference. First operand 4052 states and 5842 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 3 states have call successors, (100), 2 states have call predecessors, (100), 3 states have return successors, (92), 3 states have call predecessors, (92), 3 states have call successors, (92) [2022-12-13 19:57:32,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:57:32,726 INFO L93 Difference]: Finished difference Result 8171 states and 11871 transitions. [2022-12-13 19:57:32,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:57:32,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 3 states have call successors, (100), 2 states have call predecessors, (100), 3 states have return successors, (92), 3 states have call predecessors, (92), 3 states have call successors, (92) Word has length 651 [2022-12-13 19:57:32,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:57:32,742 INFO L225 Difference]: With dead ends: 8171 [2022-12-13 19:57:32,742 INFO L226 Difference]: Without dead ends: 4136 [2022-12-13 19:57:32,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 648 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:57:32,754 INFO L413 NwaCegarLoop]: 5401 mSDtfsCounter, 64 mSDsluCounter, 10763 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 16164 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:57:32,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 16164 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:57:32,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2022-12-13 19:57:33,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 4136. [2022-12-13 19:57:33,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4136 states, 2968 states have (on average 1.338611859838275) internal successors, (3973), 3031 states have internal predecessors, (3973), 983 states have call successors, (983), 184 states have call predecessors, (983), 183 states have return successors, (989), 964 states have call predecessors, (989), 983 states have call successors, (989) [2022-12-13 19:57:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 5945 transitions. [2022-12-13 19:57:33,053 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 5945 transitions. Word has length 651 [2022-12-13 19:57:33,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:57:33,054 INFO L495 AbstractCegarLoop]: Abstraction has 4136 states and 5945 transitions. [2022-12-13 19:57:33,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 3 states have call successors, (100), 2 states have call predecessors, (100), 3 states have return successors, (92), 3 states have call predecessors, (92), 3 states have call successors, (92) [2022-12-13 19:57:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 5945 transitions. [2022-12-13 19:57:33,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2022-12-13 19:57:33,068 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:57:33,068 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:57:33,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 19:57:33,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 19:57:33,270 INFO L420 AbstractCegarLoop]: === Iteration 26 === 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)] === [2022-12-13 19:57:33,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:33,271 INFO L85 PathProgramCache]: Analyzing trace with hash 834140937, now seen corresponding path program 1 times [2022-12-13 19:57:33,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:33,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092600231] [2022-12-13 19:57:33,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:33,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:33,762 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:57:33,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20732755] [2022-12-13 19:57:33,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:33,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:57:33,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:57:33,763 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:57:33,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 19:57:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:37,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 9515 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:57:37,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:57:37,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2022-12-13 19:57:37,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:57:37,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:37,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092600231] [2022-12-13 19:57:37,102 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:57:37,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20732755] [2022-12-13 19:57:37,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20732755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:57:37,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:57:37,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:57:37,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748493516] [2022-12-13 19:57:37,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:57:37,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:57:37,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:37,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:57:37,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:57:37,105 INFO L87 Difference]: Start difference. First operand 4136 states and 5945 transitions. Second operand has 5 states, 5 states have (on average 60.8) internal successors, (304), 4 states have internal predecessors, (304), 2 states have call successors, (98), 2 states have call predecessors, (98), 3 states have return successors, (91), 3 states have call predecessors, (91), 2 states have call successors, (91) [2022-12-13 19:57:37,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:57:37,436 INFO L93 Difference]: Finished difference Result 8257 states and 11951 transitions. [2022-12-13 19:57:37,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:57:37,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.8) internal successors, (304), 4 states have internal predecessors, (304), 2 states have call successors, (98), 2 states have call predecessors, (98), 3 states have return successors, (91), 3 states have call predecessors, (91), 2 states have call successors, (91) Word has length 682 [2022-12-13 19:57:37,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:57:37,449 INFO L225 Difference]: With dead ends: 8257 [2022-12-13 19:57:37,450 INFO L226 Difference]: Without dead ends: 4138 [2022-12-13 19:57:37,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:57:37,462 INFO L413 NwaCegarLoop]: 5402 mSDtfsCounter, 172 mSDsluCounter, 15994 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 21396 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:57:37,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 21396 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:57:37,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2022-12-13 19:57:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 4136. [2022-12-13 19:57:37,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4136 states, 2968 states have (on average 1.3382749326145553) internal successors, (3972), 3031 states have internal predecessors, (3972), 983 states have call successors, (983), 184 states have call predecessors, (983), 183 states have return successors, (989), 964 states have call predecessors, (989), 983 states have call successors, (989) [2022-12-13 19:57:37,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 5944 transitions. [2022-12-13 19:57:37,763 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 5944 transitions. Word has length 682 [2022-12-13 19:57:37,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:57:37,763 INFO L495 AbstractCegarLoop]: Abstraction has 4136 states and 5944 transitions. [2022-12-13 19:57:37,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.8) internal successors, (304), 4 states have internal predecessors, (304), 2 states have call successors, (98), 2 states have call predecessors, (98), 3 states have return successors, (91), 3 states have call predecessors, (91), 2 states have call successors, (91) [2022-12-13 19:57:37,763 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 5944 transitions. [2022-12-13 19:57:37,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2022-12-13 19:57:37,777 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:57:37,777 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:57:37,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 19:57:37,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 19:57:37,979 INFO L420 AbstractCegarLoop]: === Iteration 27 === 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)] === [2022-12-13 19:57:37,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:37,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1865181835, now seen corresponding path program 1 times [2022-12-13 19:57:37,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:37,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215525443] [2022-12-13 19:57:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:37,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:38,526 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:57:38,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127355021] [2022-12-13 19:57:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:38,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:57:38,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:57:38,528 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:57:38,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 19:57:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:42,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 9516 conjuncts, 170 conjunts are in the unsatisfiable core [2022-12-13 19:57:42,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:57:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 522 proven. 49 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2022-12-13 19:57:43,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:57:44,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 19 proven. 46 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2022-12-13 19:57:44,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:44,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215525443] [2022-12-13 19:57:44,732 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:57:44,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127355021] [2022-12-13 19:57:44,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127355021] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:57:44,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:57:44,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 18] total 45 [2022-12-13 19:57:44,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134823545] [2022-12-13 19:57:44,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:57:44,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-13 19:57:44,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:44,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-13 19:57:44,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1853, Unknown=0, NotChecked=0, Total=1980 [2022-12-13 19:57:44,734 INFO L87 Difference]: Start difference. First operand 4136 states and 5944 transitions. Second operand has 45 states, 36 states have (on average 11.444444444444445) internal successors, (412), 30 states have internal predecessors, (412), 22 states have call successors, (155), 10 states have call predecessors, (155), 10 states have return successors, (145), 20 states have call predecessors, (145), 19 states have call successors, (145) [2022-12-13 19:57:46,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:57:48,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:57:50,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:57:52,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:57:54,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:57:56,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:57:58,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:58:00,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:58:02,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:58:04,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:58:06,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:58:08,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 19:59:30,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:59:30,984 INFO L93 Difference]: Finished difference Result 9987 states and 14814 transitions. [2022-12-13 19:59:30,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-13 19:59:30,984 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 36 states have (on average 11.444444444444445) internal successors, (412), 30 states have internal predecessors, (412), 22 states have call successors, (155), 10 states have call predecessors, (155), 10 states have return successors, (145), 20 states have call predecessors, (145), 19 states have call successors, (145) Word has length 682 [2022-12-13 19:59:30,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:59:31,001 INFO L225 Difference]: With dead ends: 9987 [2022-12-13 19:59:31,001 INFO L226 Difference]: Without dead ends: 5868 [2022-12-13 19:59:31,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1409 GetRequests, 1329 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=456, Invalid=6186, Unknown=0, NotChecked=0, Total=6642 [2022-12-13 19:59:31,013 INFO L413 NwaCegarLoop]: 4701 mSDtfsCounter, 6302 mSDsluCounter, 111354 mSDsCounter, 0 mSdLazyCounter, 99380 mSolverCounterSat, 3631 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6866 SdHoareTripleChecker+Valid, 116055 SdHoareTripleChecker+Invalid, 103023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 3631 IncrementalHoareTripleChecker+Valid, 99380 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:59:31,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6866 Valid, 116055 Invalid, 103023 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [3631 Valid, 99380 Invalid, 12 Unknown, 0 Unchecked, 103.5s Time] [2022-12-13 19:59:31,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5868 states. [2022-12-13 19:59:31,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5868 to 4343. [2022-12-13 19:59:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4343 states, 3105 states have (on average 1.3352657004830917) internal successors, (4146), 3171 states have internal predecessors, (4146), 1046 states have call successors, (1046), 188 states have call predecessors, (1046), 190 states have return successors, (1062), 1028 states have call predecessors, (1062), 1046 states have call successors, (1062) [2022-12-13 19:59:31,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4343 states to 4343 states and 6254 transitions. [2022-12-13 19:59:31,413 INFO L78 Accepts]: Start accepts. Automaton has 4343 states and 6254 transitions. Word has length 682 [2022-12-13 19:59:31,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:59:31,413 INFO L495 AbstractCegarLoop]: Abstraction has 4343 states and 6254 transitions. [2022-12-13 19:59:31,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 36 states have (on average 11.444444444444445) internal successors, (412), 30 states have internal predecessors, (412), 22 states have call successors, (155), 10 states have call predecessors, (155), 10 states have return successors, (145), 20 states have call predecessors, (145), 19 states have call successors, (145) [2022-12-13 19:59:31,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4343 states and 6254 transitions. [2022-12-13 19:59:31,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2022-12-13 19:59:31,429 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:59:31,429 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 13, 13, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:59:31,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 19:59:31,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 19:59:31,631 INFO L420 AbstractCegarLoop]: === Iteration 28 === 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)] === [2022-12-13 19:59:31,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:59:31,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1810920746, now seen corresponding path program 1 times [2022-12-13 19:59:31,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:59:31,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702833895] [2022-12-13 19:59:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:59:31,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:59:32,162 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:59:32,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349780805] [2022-12-13 19:59:32,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:59:32,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:59:32,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:59:32,163 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:59:32,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 19:59:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:59:36,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 9137 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:59:36,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:59:36,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 481 proven. 0 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2022-12-13 19:59:36,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:59:36,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:59:36,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702833895] [2022-12-13 19:59:36,261 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:59:36,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349780805] [2022-12-13 19:59:36,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349780805] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:59:36,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:59:36,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:59:36,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367322365] [2022-12-13 19:59:36,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:59:36,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:59:36,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:59:36,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:59:36,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:59:36,264 INFO L87 Difference]: Start difference. First operand 4343 states and 6254 transitions. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2022-12-13 19:59:36,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:59:36,731 INFO L93 Difference]: Finished difference Result 8723 states and 12657 transitions. [2022-12-13 19:59:36,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:59:36,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) Word has length 649 [2022-12-13 19:59:36,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:59:36,746 INFO L225 Difference]: With dead ends: 8723 [2022-12-13 19:59:36,746 INFO L226 Difference]: Without dead ends: 4397 [2022-12-13 19:59:36,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 646 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:59:36,758 INFO L413 NwaCegarLoop]: 5405 mSDtfsCounter, 47 mSDsluCounter, 10778 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 16183 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:59:36,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 16183 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:59:36,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4397 states. [2022-12-13 19:59:37,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4397 to 4347. [2022-12-13 19:59:37,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3109 states have (on average 1.334834351881634) internal successors, (4150), 3175 states have internal predecessors, (4150), 1046 states have call successors, (1046), 188 states have call predecessors, (1046), 190 states have return successors, (1062), 1028 states have call predecessors, (1062), 1046 states have call successors, (1062) [2022-12-13 19:59:37,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 6258 transitions. [2022-12-13 19:59:37,170 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 6258 transitions. Word has length 649 [2022-12-13 19:59:37,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:59:37,170 INFO L495 AbstractCegarLoop]: Abstraction has 4347 states and 6258 transitions. [2022-12-13 19:59:37,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2022-12-13 19:59:37,170 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 6258 transitions. [2022-12-13 19:59:37,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2022-12-13 19:59:37,187 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:59:37,187 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:59:37,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 19:59:37,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 19:59:37,389 INFO L420 AbstractCegarLoop]: === Iteration 29 === 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)] === [2022-12-13 19:59:37,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:59:37,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1558036421, now seen corresponding path program 1 times [2022-12-13 19:59:37,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:59:37,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933334385] [2022-12-13 19:59:37,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:59:37,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:59:37,914 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:59:37,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483238121] [2022-12-13 19:59:37,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:59:37,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:59:37,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:59:37,916 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:59:37,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 19:59:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:59:42,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 9401 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 19:59:42,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:59:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1132 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2022-12-13 19:59:42,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:59:42,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:59:42,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933334385] [2022-12-13 19:59:42,591 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:59:42,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483238121] [2022-12-13 19:59:42,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483238121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:59:42,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:59:42,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 19:59:42,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082443314] [2022-12-13 19:59:42,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:59:42,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 19:59:42,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:59:42,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 19:59:42,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:59:42,593 INFO L87 Difference]: Start difference. First operand 4347 states and 6258 transitions. Second operand has 12 states, 11 states have (on average 26.545454545454547) internal successors, (292), 11 states have internal predecessors, (292), 5 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (88), 5 states have call predecessors, (88), 5 states have call successors, (88) [2022-12-13 19:59:43,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:59:43,741 INFO L93 Difference]: Finished difference Result 9328 states and 13476 transitions. [2022-12-13 19:59:43,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:59:43,742 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 26.545454545454547) internal successors, (292), 11 states have internal predecessors, (292), 5 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (88), 5 states have call predecessors, (88), 5 states have call successors, (88) Word has length 660 [2022-12-13 19:59:43,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:59:43,755 INFO L225 Difference]: With dead ends: 9328 [2022-12-13 19:59:43,755 INFO L226 Difference]: Without dead ends: 4997 [2022-12-13 19:59:43,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-12-13 19:59:43,765 INFO L413 NwaCegarLoop]: 6329 mSDtfsCounter, 2115 mSDsluCounter, 60699 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2115 SdHoareTripleChecker+Valid, 67028 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:59:43,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2115 Valid, 67028 Invalid, 921 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [416 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 19:59:43,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4997 states. [2022-12-13 19:59:44,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4997 to 4355. [2022-12-13 19:59:44,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 3115 states have (on average 1.3341894060995185) internal successors, (4156), 3181 states have internal predecessors, (4156), 1048 states have call successors, (1048), 188 states have call predecessors, (1048), 190 states have return successors, (1064), 1030 states have call predecessors, (1064), 1048 states have call successors, (1064) [2022-12-13 19:59:44,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 6268 transitions. [2022-12-13 19:59:44,127 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 6268 transitions. Word has length 660 [2022-12-13 19:59:44,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:59:44,127 INFO L495 AbstractCegarLoop]: Abstraction has 4355 states and 6268 transitions. [2022-12-13 19:59:44,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 26.545454545454547) internal successors, (292), 11 states have internal predecessors, (292), 5 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (88), 5 states have call predecessors, (88), 5 states have call successors, (88) [2022-12-13 19:59:44,128 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 6268 transitions. [2022-12-13 19:59:44,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2022-12-13 19:59:44,142 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:59:44,143 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:59:44,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 19:59:44,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 19:59:44,345 INFO L420 AbstractCegarLoop]: === Iteration 30 === 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)] === [2022-12-13 19:59:44,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:59:44,346 INFO L85 PathProgramCache]: Analyzing trace with hash 615537155, now seen corresponding path program 1 times [2022-12-13 19:59:44,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:59:44,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107912135] [2022-12-13 19:59:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:59:44,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:59:44,912 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:59:44,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190280667] [2022-12-13 19:59:44,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:59:44,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:59:44,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:59:44,913 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:59:44,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 19:59:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:59:49,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 9200 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 19:59:49,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:59:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2022-12-13 19:59:49,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:59:49,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:59:49,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107912135] [2022-12-13 19:59:49,176 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:59:49,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190280667] [2022-12-13 19:59:49,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190280667] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:59:49,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:59:49,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 19:59:49,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938148626] [2022-12-13 19:59:49,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:59:49,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 19:59:49,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:59:49,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 19:59:49,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:59:49,178 INFO L87 Difference]: Start difference. First operand 4355 states and 6268 transitions. Second operand has 12 states, 11 states have (on average 26.09090909090909) internal successors, (287), 11 states have internal predecessors, (287), 5 states have call successors, (93), 2 states have call predecessors, (93), 4 states have return successors, (85), 5 states have call predecessors, (85), 5 states have call successors, (85) [2022-12-13 19:59:50,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:59:50,440 INFO L93 Difference]: Finished difference Result 9987 states and 14467 transitions. [2022-12-13 19:59:50,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 19:59:50,441 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 26.09090909090909) internal successors, (287), 11 states have internal predecessors, (287), 5 states have call successors, (93), 2 states have call predecessors, (93), 4 states have return successors, (85), 5 states have call predecessors, (85), 5 states have call successors, (85) Word has length 637 [2022-12-13 19:59:50,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:59:50,456 INFO L225 Difference]: With dead ends: 9987 [2022-12-13 19:59:50,456 INFO L226 Difference]: Without dead ends: 5648 [2022-12-13 19:59:50,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2022-12-13 19:59:50,467 INFO L413 NwaCegarLoop]: 6455 mSDtfsCounter, 2122 mSDsluCounter, 61834 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2258 SdHoareTripleChecker+Valid, 68289 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:59:50,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2258 Valid, 68289 Invalid, 961 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [421 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 19:59:50,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5648 states. [2022-12-13 19:59:50,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5648 to 4355. [2022-12-13 19:59:50,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 3115 states have (on average 1.3341894060995185) internal successors, (4156), 3181 states have internal predecessors, (4156), 1048 states have call successors, (1048), 188 states have call predecessors, (1048), 190 states have return successors, (1064), 1030 states have call predecessors, (1064), 1048 states have call successors, (1064) [2022-12-13 19:59:50,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 6268 transitions. [2022-12-13 19:59:50,860 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 6268 transitions. Word has length 637 [2022-12-13 19:59:50,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:59:50,860 INFO L495 AbstractCegarLoop]: Abstraction has 4355 states and 6268 transitions. [2022-12-13 19:59:50,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 26.09090909090909) internal successors, (287), 11 states have internal predecessors, (287), 5 states have call successors, (93), 2 states have call predecessors, (93), 4 states have return successors, (85), 5 states have call predecessors, (85), 5 states have call successors, (85) [2022-12-13 19:59:50,860 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 6268 transitions. [2022-12-13 19:59:50,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2022-12-13 19:59:50,875 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:59:50,876 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 8, 8, 8, 8, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:59:50,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-13 19:59:51,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:59:51,078 INFO L420 AbstractCegarLoop]: === Iteration 31 === 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)] === [2022-12-13 19:59:51,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:59:51,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2044158809, now seen corresponding path program 1 times [2022-12-13 19:59:51,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:59:51,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027873606] [2022-12-13 19:59:51,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:59:51,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:59:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:59:51,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:59:51,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027873606] [2022-12-13 19:59:51,830 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 19:59:51,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873405123] [2022-12-13 19:59:51,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:59:51,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:59:51,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:59:51,831 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:59:51,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 19:59:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:59:55,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 9342 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 19:59:55,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:59:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2022-12-13 19:59:56,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:59:56,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873405123] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:59:56,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:59:56,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 19:59:56,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59737497] [2022-12-13 19:59:56,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:59:56,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 19:59:56,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:59:56,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 19:59:56,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:59:56,006 INFO L87 Difference]: Start difference. First operand 4355 states and 6268 transitions. Second operand has 13 states, 12 states have (on average 25.083333333333332) internal successors, (301), 12 states have internal predecessors, (301), 6 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (89), 6 states have call predecessors, (89), 6 states have call successors, (89) [2022-12-13 19:59:57,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:59:57,429 INFO L93 Difference]: Finished difference Result 9373 states and 13535 transitions. [2022-12-13 19:59:57,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 19:59:57,430 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 25.083333333333332) internal successors, (301), 12 states have internal predecessors, (301), 6 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (89), 6 states have call predecessors, (89), 6 states have call successors, (89) Word has length 663 [2022-12-13 19:59:57,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:59:57,444 INFO L225 Difference]: With dead ends: 9373 [2022-12-13 19:59:57,444 INFO L226 Difference]: Without dead ends: 5034 [2022-12-13 19:59:57,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2022-12-13 19:59:57,454 INFO L413 NwaCegarLoop]: 6344 mSDtfsCounter, 2136 mSDsluCounter, 67091 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2138 SdHoareTripleChecker+Valid, 73435 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 19:59:57,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2138 Valid, 73435 Invalid, 1113 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [454 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 19:59:57,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5034 states. [2022-12-13 19:59:57,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5034 to 4361. [2022-12-13 19:59:57,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4361 states, 3118 states have (on average 1.3338678640153945) internal successors, (4159), 3183 states have internal predecessors, (4159), 1051 states have call successors, (1051), 188 states have call predecessors, (1051), 190 states have return successors, (1067), 1033 states have call predecessors, (1067), 1051 states have call successors, (1067) [2022-12-13 19:59:57,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4361 states to 4361 states and 6277 transitions. [2022-12-13 19:59:57,867 INFO L78 Accepts]: Start accepts. Automaton has 4361 states and 6277 transitions. Word has length 663 [2022-12-13 19:59:57,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:59:57,867 INFO L495 AbstractCegarLoop]: Abstraction has 4361 states and 6277 transitions. [2022-12-13 19:59:57,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 25.083333333333332) internal successors, (301), 12 states have internal predecessors, (301), 6 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (89), 6 states have call predecessors, (89), 6 states have call successors, (89) [2022-12-13 19:59:57,868 INFO L276 IsEmpty]: Start isEmpty. Operand 4361 states and 6277 transitions. [2022-12-13 19:59:57,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2022-12-13 19:59:57,884 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:59:57,885 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 10, 10, 10, 10, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:59:57,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-13 19:59:58,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:59:58,086 INFO L420 AbstractCegarLoop]: === Iteration 32 === 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)] === [2022-12-13 19:59:58,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:59:58,088 INFO L85 PathProgramCache]: Analyzing trace with hash 619505359, now seen corresponding path program 1 times [2022-12-13 19:59:58,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:59:58,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792629068] [2022-12-13 19:59:58,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:59:58,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:59:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:59:58,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:59:58,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792629068] [2022-12-13 19:59:58,718 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 19:59:58,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413880564] [2022-12-13 19:59:58,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:59:58,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:59:58,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:59:58,719 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:59:58,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 20:00:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:03,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 10323 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:00:03,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1604 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2022-12-13 20:00:03,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:00:03,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413880564] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:00:03,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:00:03,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:00:03,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668330901] [2022-12-13 20:00:03,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:00:03,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:00:03,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:00:03,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:00:03,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:00:03,035 INFO L87 Difference]: Start difference. First operand 4361 states and 6277 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 2 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-12-13 20:00:03,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:00:03,463 INFO L93 Difference]: Finished difference Result 8717 states and 12551 transitions. [2022-12-13 20:00:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:00:03,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 2 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 814 [2022-12-13 20:00:03,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:00:03,477 INFO L225 Difference]: With dead ends: 8717 [2022-12-13 20:00:03,477 INFO L226 Difference]: Without dead ends: 4373 [2022-12-13 20:00:03,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 812 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:00:03,488 INFO L413 NwaCegarLoop]: 5401 mSDtfsCounter, 10 mSDsluCounter, 5392 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 10793 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:00:03,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 10793 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:00:03,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4373 states. [2022-12-13 20:00:03,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4373 to 4362. [2022-12-13 20:00:03,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4362 states, 3119 states have (on average 1.3337608207758898) internal successors, (4160), 3184 states have internal predecessors, (4160), 1051 states have call successors, (1051), 188 states have call predecessors, (1051), 190 states have return successors, (1067), 1033 states have call predecessors, (1067), 1051 states have call successors, (1067) [2022-12-13 20:00:03,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4362 states to 4362 states and 6278 transitions. [2022-12-13 20:00:03,890 INFO L78 Accepts]: Start accepts. Automaton has 4362 states and 6278 transitions. Word has length 814 [2022-12-13 20:00:03,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:00:03,891 INFO L495 AbstractCegarLoop]: Abstraction has 4362 states and 6278 transitions. [2022-12-13 20:00:03,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 2 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-12-13 20:00:03,891 INFO L276 IsEmpty]: Start isEmpty. Operand 4362 states and 6278 transitions. [2022-12-13 20:00:03,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2022-12-13 20:00:03,907 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:00:03,908 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 16, 16, 10, 10, 10, 10, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:00:03,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 20:00:04,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:00:04,110 INFO L420 AbstractCegarLoop]: === Iteration 33 === 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)] === [2022-12-13 20:00:04,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:04,112 INFO L85 PathProgramCache]: Analyzing trace with hash -699222617, now seen corresponding path program 1 times [2022-12-13 20:00:04,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:04,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938672750] [2022-12-13 20:00:04,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:04,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:04,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:00:04,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938672750] [2022-12-13 20:00:04,749 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:00:04,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633317626] [2022-12-13 20:00:04,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:04,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:00:04,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:04,750 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:00:04,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 20:00:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:09,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 10317 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:00:09,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 989 trivial. 0 not checked. [2022-12-13 20:00:09,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:00:09,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633317626] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:00:09,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:00:09,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:00:09,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832734592] [2022-12-13 20:00:09,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:00:09,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:00:09,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:00:09,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:00:09,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:00:09,970 INFO L87 Difference]: Start difference. First operand 4362 states and 6278 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2022-12-13 20:00:10,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:00:10,523 INFO L93 Difference]: Finished difference Result 8712 states and 12540 transitions. [2022-12-13 20:00:10,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:00:10,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) Word has length 829 [2022-12-13 20:00:10,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:00:10,537 INFO L225 Difference]: With dead ends: 8712 [2022-12-13 20:00:10,537 INFO L226 Difference]: Without dead ends: 4367 [2022-12-13 20:00:10,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 827 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:00:10,548 INFO L413 NwaCegarLoop]: 5401 mSDtfsCounter, 2 mSDsluCounter, 5393 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10794 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:00:10,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10794 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:00:10,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4367 states. [2022-12-13 20:00:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4367 to 4363. [2022-12-13 20:00:10,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4363 states, 3120 states have (on average 1.333653846153846) internal successors, (4161), 3185 states have internal predecessors, (4161), 1051 states have call successors, (1051), 188 states have call predecessors, (1051), 190 states have return successors, (1067), 1033 states have call predecessors, (1067), 1051 states have call successors, (1067) [2022-12-13 20:00:10,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4363 states to 4363 states and 6279 transitions. [2022-12-13 20:00:10,959 INFO L78 Accepts]: Start accepts. Automaton has 4363 states and 6279 transitions. Word has length 829 [2022-12-13 20:00:10,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:00:10,959 INFO L495 AbstractCegarLoop]: Abstraction has 4363 states and 6279 transitions. [2022-12-13 20:00:10,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2022-12-13 20:00:10,959 INFO L276 IsEmpty]: Start isEmpty. Operand 4363 states and 6279 transitions. [2022-12-13 20:00:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2022-12-13 20:00:10,976 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:00:10,977 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 15, 15, 15, 12, 12, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:00:11,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 20:00:11,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:00:11,178 INFO L420 AbstractCegarLoop]: === Iteration 34 === 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)] === [2022-12-13 20:00:11,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:11,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1098097708, now seen corresponding path program 1 times [2022-12-13 20:00:11,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:11,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292735795] [2022-12-13 20:00:11,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:11,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:11,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:00:11,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292735795] [2022-12-13 20:00:11,696 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:00:11,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657554502] [2022-12-13 20:00:11,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:11,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:00:11,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:11,697 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:00:11,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 20:00:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:17,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 11177 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:00:17,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1675 backedges. 613 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-12-13 20:00:17,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:00:17,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657554502] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:00:17,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:00:17,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:00:17,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007236248] [2022-12-13 20:00:17,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:00:17,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:00:17,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:00:17,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:00:17,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:00:17,162 INFO L87 Difference]: Start difference. First operand 4363 states and 6279 transitions. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 2 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2022-12-13 20:00:17,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:00:17,753 INFO L93 Difference]: Finished difference Result 9383 states and 13551 transitions. [2022-12-13 20:00:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:00:17,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 2 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) Word has length 879 [2022-12-13 20:00:17,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:00:17,768 INFO L225 Difference]: With dead ends: 9383 [2022-12-13 20:00:17,768 INFO L226 Difference]: Without dead ends: 5037 [2022-12-13 20:00:17,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 877 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:00:17,779 INFO L413 NwaCegarLoop]: 5764 mSDtfsCounter, 702 mSDsluCounter, 5433 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 11197 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:00:17,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 11197 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:00:17,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5037 states. [2022-12-13 20:00:18,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5037 to 4374. [2022-12-13 20:00:18,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 3131 states have (on average 1.3340785691472372) internal successors, (4177), 3196 states have internal predecessors, (4177), 1051 states have call successors, (1051), 188 states have call predecessors, (1051), 190 states have return successors, (1067), 1033 states have call predecessors, (1067), 1051 states have call successors, (1067) [2022-12-13 20:00:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 6295 transitions. [2022-12-13 20:00:18,189 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 6295 transitions. Word has length 879 [2022-12-13 20:00:18,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:00:18,189 INFO L495 AbstractCegarLoop]: Abstraction has 4374 states and 6295 transitions. [2022-12-13 20:00:18,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 2 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2022-12-13 20:00:18,190 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 6295 transitions. [2022-12-13 20:00:18,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2022-12-13 20:00:18,206 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:00:18,206 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 10, 10, 9, 9, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:00:18,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-12-13 20:00:18,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-13 20:00:18,408 INFO L420 AbstractCegarLoop]: === Iteration 35 === 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)] === [2022-12-13 20:00:18,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:18,409 INFO L85 PathProgramCache]: Analyzing trace with hash -6329185, now seen corresponding path program 1 times [2022-12-13 20:00:18,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:18,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896965517] [2022-12-13 20:00:18,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:18,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:19,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:00:19,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896965517] [2022-12-13 20:00:19,060 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:00:19,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134076297] [2022-12-13 20:00:19,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:19,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:00:19,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:19,061 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:00:19,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 20:00:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:24,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 10125 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:00:24,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 645 proven. 1 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2022-12-13 20:00:24,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:00:24,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2022-12-13 20:00:24,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134076297] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:00:24,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:00:24,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 20:00:24,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885970813] [2022-12-13 20:00:24,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:00:24,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:00:24,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:00:24,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:00:24,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:00:24,898 INFO L87 Difference]: Start difference. First operand 4374 states and 6295 transitions. Second operand has 6 states, 6 states have (on average 88.16666666666667) internal successors, (529), 6 states have internal predecessors, (529), 4 states have call successors, (196), 2 states have call predecessors, (196), 2 states have return successors, (191), 4 states have call predecessors, (191), 4 states have call successors, (191) [2022-12-13 20:00:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:00:25,426 INFO L93 Difference]: Finished difference Result 8746 states and 12590 transitions. [2022-12-13 20:00:25,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:00:25,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 88.16666666666667) internal successors, (529), 6 states have internal predecessors, (529), 4 states have call successors, (196), 2 states have call predecessors, (196), 2 states have return successors, (191), 4 states have call predecessors, (191), 4 states have call successors, (191) Word has length 815 [2022-12-13 20:00:25,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:00:25,438 INFO L225 Difference]: With dead ends: 8746 [2022-12-13 20:00:25,438 INFO L226 Difference]: Without dead ends: 4389 [2022-12-13 20:00:25,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1628 GetRequests, 1624 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:00:25,448 INFO L413 NwaCegarLoop]: 5405 mSDtfsCounter, 4 mSDsluCounter, 10783 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 16188 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:00:25,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 16188 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:00:25,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2022-12-13 20:00:25,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 4389. [2022-12-13 20:00:25,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4389 states, 3140 states have (on average 1.3331210191082803) internal successors, (4186), 3205 states have internal predecessors, (4186), 1057 states have call successors, (1057), 188 states have call predecessors, (1057), 190 states have return successors, (1073), 1039 states have call predecessors, (1073), 1057 states have call successors, (1073) [2022-12-13 20:00:25,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4389 states to 4389 states and 6316 transitions. [2022-12-13 20:00:25,847 INFO L78 Accepts]: Start accepts. Automaton has 4389 states and 6316 transitions. Word has length 815 [2022-12-13 20:00:25,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:00:25,847 INFO L495 AbstractCegarLoop]: Abstraction has 4389 states and 6316 transitions. [2022-12-13 20:00:25,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.16666666666667) internal successors, (529), 6 states have internal predecessors, (529), 4 states have call successors, (196), 2 states have call predecessors, (196), 2 states have return successors, (191), 4 states have call predecessors, (191), 4 states have call successors, (191) [2022-12-13 20:00:25,847 INFO L276 IsEmpty]: Start isEmpty. Operand 4389 states and 6316 transitions. [2022-12-13 20:00:25,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2022-12-13 20:00:25,864 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:00:25,865 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 11, 11, 10, 10, 9, 9, 9, 9, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:00:25,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 20:00:26,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-12-13 20:00:26,067 INFO L420 AbstractCegarLoop]: === Iteration 36 === 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)] === [2022-12-13 20:00:26,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash -845345976, now seen corresponding path program 2 times [2022-12-13 20:00:26,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:26,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545681363] [2022-12-13 20:00:26,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:26,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:26,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:00:26,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545681363] [2022-12-13 20:00:26,726 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:00:26,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169219378] [2022-12-13 20:00:26,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:00:26,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:00:26,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:26,727 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:00:26,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 20:00:35,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:00:35,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:00:36,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 10194 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:00:36,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1768 backedges. 717 proven. 34 refuted. 0 times theorem prover too weak. 1017 trivial. 0 not checked. [2022-12-13 20:00:36,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:00:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1768 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 1731 trivial. 0 not checked. [2022-12-13 20:00:36,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169219378] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:00:36,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:00:36,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2022-12-13 20:00:36,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265668786] [2022-12-13 20:00:36,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:00:36,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:00:36,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:00:36,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:00:36,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:00:36,442 INFO L87 Difference]: Start difference. First operand 4389 states and 6316 transitions. Second operand has 7 states, 7 states have (on average 76.14285714285714) internal successors, (533), 7 states have internal predecessors, (533), 6 states have call successors, (200), 2 states have call predecessors, (200), 2 states have return successors, (195), 6 states have call predecessors, (195), 6 states have call successors, (195) [2022-12-13 20:00:37,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:00:37,033 INFO L93 Difference]: Finished difference Result 8766 states and 12616 transitions. [2022-12-13 20:00:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:00:37,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 76.14285714285714) internal successors, (533), 7 states have internal predecessors, (533), 6 states have call successors, (200), 2 states have call predecessors, (200), 2 states have return successors, (195), 6 states have call predecessors, (195), 6 states have call successors, (195) Word has length 848 [2022-12-13 20:00:37,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:00:37,045 INFO L225 Difference]: With dead ends: 8766 [2022-12-13 20:00:37,045 INFO L226 Difference]: Without dead ends: 4394 [2022-12-13 20:00:37,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1694 GetRequests, 1685 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:00:37,054 INFO L413 NwaCegarLoop]: 5407 mSDtfsCounter, 2 mSDsluCounter, 16174 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 21581 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:00:37,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 21581 Invalid, 39 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:00:37,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2022-12-13 20:00:37,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 4394. [2022-12-13 20:00:37,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4394 states, 3143 states have (on average 1.3328030544066178) internal successors, (4189), 3208 states have internal predecessors, (4189), 1059 states have call successors, (1059), 188 states have call predecessors, (1059), 190 states have return successors, (1075), 1041 states have call predecessors, (1075), 1059 states have call successors, (1075) [2022-12-13 20:00:37,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4394 states to 4394 states and 6323 transitions. [2022-12-13 20:00:37,450 INFO L78 Accepts]: Start accepts. Automaton has 4394 states and 6323 transitions. Word has length 848 [2022-12-13 20:00:37,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:00:37,450 INFO L495 AbstractCegarLoop]: Abstraction has 4394 states and 6323 transitions. [2022-12-13 20:00:37,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.14285714285714) internal successors, (533), 7 states have internal predecessors, (533), 6 states have call successors, (200), 2 states have call predecessors, (200), 2 states have return successors, (195), 6 states have call predecessors, (195), 6 states have call successors, (195) [2022-12-13 20:00:37,451 INFO L276 IsEmpty]: Start isEmpty. Operand 4394 states and 6323 transitions. [2022-12-13 20:00:37,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2022-12-13 20:00:37,467 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:00:37,468 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 12, 12, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:00:37,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 20:00:37,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:00:37,670 INFO L420 AbstractCegarLoop]: === Iteration 37 === 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)] === [2022-12-13 20:00:37,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:37,671 INFO L85 PathProgramCache]: Analyzing trace with hash 924283034, now seen corresponding path program 1 times [2022-12-13 20:00:37,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:37,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717578230] [2022-12-13 20:00:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:37,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:38,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:00:38,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717578230] [2022-12-13 20:00:38,586 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:00:38,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195626957] [2022-12-13 20:00:38,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:38,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:00:38,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:38,587 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:00:38,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 20:00:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:43,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 10484 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:00:43,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1899 backedges. 714 proven. 0 refuted. 0 times theorem prover too weak. 1185 trivial. 0 not checked. [2022-12-13 20:00:43,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:00:43,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195626957] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:00:43,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:00:43,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:00:43,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396110560] [2022-12-13 20:00:43,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:00:43,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:00:43,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:00:43,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:00:43,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:00:43,753 INFO L87 Difference]: Start difference. First operand 4394 states and 6323 transitions. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2022-12-13 20:00:44,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:00:44,333 INFO L93 Difference]: Finished difference Result 8934 states and 12857 transitions. [2022-12-13 20:00:44,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:00:44,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) Word has length 870 [2022-12-13 20:00:44,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:00:44,354 INFO L225 Difference]: With dead ends: 8934 [2022-12-13 20:00:44,354 INFO L226 Difference]: Without dead ends: 4557 [2022-12-13 20:00:44,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 871 GetRequests, 868 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:00:44,370 INFO L413 NwaCegarLoop]: 5556 mSDtfsCounter, 174 mSDsluCounter, 10931 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 16487 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:00:44,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 16487 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:00:44,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4557 states. [2022-12-13 20:00:44,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4557 to 4396. [2022-12-13 20:00:44,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4396 states, 3145 states have (on average 1.332591414944356) internal successors, (4191), 3210 states have internal predecessors, (4191), 1059 states have call successors, (1059), 188 states have call predecessors, (1059), 190 states have return successors, (1075), 1041 states have call predecessors, (1075), 1059 states have call successors, (1075) [2022-12-13 20:00:44,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 6325 transitions. [2022-12-13 20:00:44,788 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 6325 transitions. Word has length 870 [2022-12-13 20:00:44,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:00:44,788 INFO L495 AbstractCegarLoop]: Abstraction has 4396 states and 6325 transitions. [2022-12-13 20:00:44,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2022-12-13 20:00:44,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 6325 transitions. [2022-12-13 20:00:44,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2022-12-13 20:00:44,805 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:00:44,805 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 12, 12, 10, 10, 10, 10, 9, 9, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:00:44,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 20:00:45,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-12-13 20:00:45,007 INFO L420 AbstractCegarLoop]: === Iteration 38 === 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)] === [2022-12-13 20:00:45,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:45,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1628228204, now seen corresponding path program 1 times [2022-12-13 20:00:45,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:45,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177086515] [2022-12-13 20:00:45,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:45,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:45,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:00:45,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177086515] [2022-12-13 20:00:45,448 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:00:45,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554071553] [2022-12-13 20:00:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:45,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:00:45,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:45,450 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:00:45,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 20:00:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:51,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 10308 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:00:51,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:51,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 1349 trivial. 0 not checked. [2022-12-13 20:00:51,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:00:51,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554071553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:00:51,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:00:51,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:00:51,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339587219] [2022-12-13 20:00:51,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:00:51,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:00:51,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:00:51,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:00:51,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:00:51,373 INFO L87 Difference]: Start difference. First operand 4396 states and 6325 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 2 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) [2022-12-13 20:00:51,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:00:51,831 INFO L93 Difference]: Finished difference Result 8781 states and 12638 transitions. [2022-12-13 20:00:51,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:00:51,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 2 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) Word has length 882 [2022-12-13 20:00:51,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:00:51,845 INFO L225 Difference]: With dead ends: 8781 [2022-12-13 20:00:51,845 INFO L226 Difference]: Without dead ends: 4402 [2022-12-13 20:00:51,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 880 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:00:51,858 INFO L413 NwaCegarLoop]: 5399 mSDtfsCounter, 3 mSDsluCounter, 5393 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10792 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:00:51,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10792 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:00:51,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4402 states. [2022-12-13 20:00:52,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4402 to 4397. [2022-12-13 20:00:52,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4397 states, 3146 states have (on average 1.3324856961220597) internal successors, (4192), 3211 states have internal predecessors, (4192), 1059 states have call successors, (1059), 188 states have call predecessors, (1059), 190 states have return successors, (1075), 1041 states have call predecessors, (1075), 1059 states have call successors, (1075) [2022-12-13 20:00:52,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 6326 transitions. [2022-12-13 20:00:52,280 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 6326 transitions. Word has length 882 [2022-12-13 20:00:52,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:00:52,281 INFO L495 AbstractCegarLoop]: Abstraction has 4397 states and 6326 transitions. [2022-12-13 20:00:52,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 2 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) [2022-12-13 20:00:52,281 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 6326 transitions. [2022-12-13 20:00:52,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2022-12-13 20:00:52,298 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:00:52,298 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 12, 12, 11, 11, 10, 10, 10, 10, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:00:52,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-13 20:00:52,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-13 20:00:52,500 INFO L420 AbstractCegarLoop]: === Iteration 39 === 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)] === [2022-12-13 20:00:52,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:52,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2005561042, now seen corresponding path program 1 times [2022-12-13 20:00:52,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:52,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722164214] [2022-12-13 20:00:52,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:52,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:53,151 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:00:53,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919025058] [2022-12-13 20:00:53,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:53,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:00:53,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:53,153 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:00:53,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 20:00:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:59,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 10537 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 20:00:59,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1929 backedges. 741 proven. 0 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2022-12-13 20:00:59,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:00:59,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:00:59,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722164214] [2022-12-13 20:00:59,680 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:00:59,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919025058] [2022-12-13 20:00:59,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919025058] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:00:59,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:00:59,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 20:00:59,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485237248] [2022-12-13 20:00:59,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:00:59,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 20:00:59,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:00:59,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 20:00:59,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:00:59,682 INFO L87 Difference]: Start difference. First operand 4397 states and 6326 transitions. Second operand has 14 states, 13 states have (on average 29.307692307692307) internal successors, (381), 13 states have internal predecessors, (381), 6 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (119), 6 states have call predecessors, (119), 6 states have call successors, (119) [2022-12-13 20:01:01,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:01,660 INFO L93 Difference]: Finished difference Result 9698 states and 13994 transitions. [2022-12-13 20:01:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-13 20:01:01,662 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 29.307692307692307) internal successors, (381), 13 states have internal predecessors, (381), 6 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (119), 6 states have call predecessors, (119), 6 states have call successors, (119) Word has length 895 [2022-12-13 20:01:01,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:01,675 INFO L225 Difference]: With dead ends: 9698 [2022-12-13 20:01:01,675 INFO L226 Difference]: Without dead ends: 5317 [2022-12-13 20:01:01,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 888 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=350, Invalid=1542, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 20:01:01,687 INFO L413 NwaCegarLoop]: 6483 mSDtfsCounter, 2319 mSDsluCounter, 74859 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2335 SdHoareTripleChecker+Valid, 81342 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:01,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2335 Valid, 81342 Invalid, 1499 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [573 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 20:01:01,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5317 states. [2022-12-13 20:01:02,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5317 to 4398. [2022-12-13 20:01:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4398 states, 3146 states have (on average 1.3324856961220597) internal successors, (4192), 3212 states have internal predecessors, (4192), 1060 states have call successors, (1060), 188 states have call predecessors, (1060), 190 states have return successors, (1076), 1042 states have call predecessors, (1076), 1060 states have call successors, (1076) [2022-12-13 20:01:02,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4398 states to 4398 states and 6328 transitions. [2022-12-13 20:01:02,133 INFO L78 Accepts]: Start accepts. Automaton has 4398 states and 6328 transitions. Word has length 895 [2022-12-13 20:01:02,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:02,133 INFO L495 AbstractCegarLoop]: Abstraction has 4398 states and 6328 transitions. [2022-12-13 20:01:02,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 29.307692307692307) internal successors, (381), 13 states have internal predecessors, (381), 6 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (119), 6 states have call predecessors, (119), 6 states have call successors, (119) [2022-12-13 20:01:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4398 states and 6328 transitions. [2022-12-13 20:01:02,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2022-12-13 20:01:02,152 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:02,152 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 15, 15, 15, 13, 13, 12, 12, 10, 10, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:02,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-12-13 20:01:02,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-13 20:01:02,354 INFO L420 AbstractCegarLoop]: === Iteration 40 === 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)] === [2022-12-13 20:01:02,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:02,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1056261711, now seen corresponding path program 1 times [2022-12-13 20:01:02,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:02,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841552156] [2022-12-13 20:01:02,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:02,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:03,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:03,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841552156] [2022-12-13 20:01:03,100 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:01:03,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697647010] [2022-12-13 20:01:03,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:03,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:03,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:03,101 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:03,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 20:01:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:09,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 11726 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:01:09,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 865 proven. 0 refuted. 0 times theorem prover too weak. 1442 trivial. 0 not checked. [2022-12-13 20:01:09,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:01:09,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697647010] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:09,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:09,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:01:09,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539824776] [2022-12-13 20:01:09,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:09,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:01:09,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:09,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:01:09,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:01:09,436 INFO L87 Difference]: Start difference. First operand 4398 states and 6328 transitions. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 2 states have call successors, (134), 2 states have call predecessors, (134), 2 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) [2022-12-13 20:01:09,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:09,928 INFO L93 Difference]: Finished difference Result 8787 states and 12644 transitions. [2022-12-13 20:01:09,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:01:09,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 2 states have call successors, (134), 2 states have call predecessors, (134), 2 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) Word has length 994 [2022-12-13 20:01:09,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:09,940 INFO L225 Difference]: With dead ends: 8787 [2022-12-13 20:01:09,941 INFO L226 Difference]: Without dead ends: 4406 [2022-12-13 20:01:09,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 992 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:01:09,950 INFO L413 NwaCegarLoop]: 5393 mSDtfsCounter, 4 mSDsluCounter, 5380 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10773 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:09,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10773 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:09,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4406 states. [2022-12-13 20:01:10,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4406 to 4402. [2022-12-13 20:01:10,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 3150 states have (on average 1.3320634920634922) internal successors, (4196), 3216 states have internal predecessors, (4196), 1060 states have call successors, (1060), 188 states have call predecessors, (1060), 190 states have return successors, (1076), 1042 states have call predecessors, (1076), 1060 states have call successors, (1076) [2022-12-13 20:01:10,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 6332 transitions. [2022-12-13 20:01:10,386 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 6332 transitions. Word has length 994 [2022-12-13 20:01:10,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:10,386 INFO L495 AbstractCegarLoop]: Abstraction has 4402 states and 6332 transitions. [2022-12-13 20:01:10,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 2 states have call successors, (134), 2 states have call predecessors, (134), 2 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) [2022-12-13 20:01:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 6332 transitions. [2022-12-13 20:01:10,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2022-12-13 20:01:10,404 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:10,405 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 17, 17, 17, 13, 13, 12, 12, 10, 10, 10, 10, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:10,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-12-13 20:01:10,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-12-13 20:01:10,607 INFO L420 AbstractCegarLoop]: === Iteration 41 === 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)] === [2022-12-13 20:01:10,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:10,608 INFO L85 PathProgramCache]: Analyzing trace with hash -647764329, now seen corresponding path program 1 times [2022-12-13 20:01:10,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:10,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124133254] [2022-12-13 20:01:10,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:10,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:11,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:11,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124133254] [2022-12-13 20:01:11,445 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:01:11,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673640096] [2022-12-13 20:01:11,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:11,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:11,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:11,446 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:11,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 20:01:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:17,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 11581 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:01:17,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:17,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2345 backedges. 994 proven. 0 refuted. 0 times theorem prover too weak. 1351 trivial. 0 not checked. [2022-12-13 20:01:17,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:01:17,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673640096] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:17,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:17,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:01:17,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289516138] [2022-12-13 20:01:17,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:17,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:01:17,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:17,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:01:17,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:01:17,912 INFO L87 Difference]: Start difference. First operand 4402 states and 6332 transitions. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 2 states have call successors, (136), 2 states have call predecessors, (136), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2022-12-13 20:01:18,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:18,478 INFO L93 Difference]: Finished difference Result 8789 states and 12643 transitions. [2022-12-13 20:01:18,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:01:18,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 2 states have call successors, (136), 2 states have call predecessors, (136), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) Word has length 1006 [2022-12-13 20:01:18,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:18,490 INFO L225 Difference]: With dead ends: 8789 [2022-12-13 20:01:18,490 INFO L226 Difference]: Without dead ends: 4404 [2022-12-13 20:01:18,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1005 GetRequests, 1004 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:01:18,501 INFO L413 NwaCegarLoop]: 5399 mSDtfsCounter, 1 mSDsluCounter, 5393 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10792 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:18,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10792 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:01:18,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4404 states. [2022-12-13 20:01:18,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4404 to 4403. [2022-12-13 20:01:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4403 states, 3151 states have (on average 1.3319581085369725) internal successors, (4197), 3217 states have internal predecessors, (4197), 1060 states have call successors, (1060), 188 states have call predecessors, (1060), 190 states have return successors, (1076), 1042 states have call predecessors, (1076), 1060 states have call successors, (1076) [2022-12-13 20:01:18,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4403 states to 4403 states and 6333 transitions. [2022-12-13 20:01:18,939 INFO L78 Accepts]: Start accepts. Automaton has 4403 states and 6333 transitions. Word has length 1006 [2022-12-13 20:01:18,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:18,939 INFO L495 AbstractCegarLoop]: Abstraction has 4403 states and 6333 transitions. [2022-12-13 20:01:18,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 2 states have call successors, (136), 2 states have call predecessors, (136), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2022-12-13 20:01:18,940 INFO L276 IsEmpty]: Start isEmpty. Operand 4403 states and 6333 transitions. [2022-12-13 20:01:18,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1034 [2022-12-13 20:01:18,968 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:18,968 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 18, 18, 18, 13, 13, 12, 12, 11, 11, 10, 10, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:19,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-13 20:01:19,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:19,170 INFO L420 AbstractCegarLoop]: === Iteration 42 === 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)] === [2022-12-13 20:01:19,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:19,172 INFO L85 PathProgramCache]: Analyzing trace with hash -628759214, now seen corresponding path program 1 times [2022-12-13 20:01:19,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:19,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540490984] [2022-12-13 20:01:19,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:19,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:19,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:19,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540490984] [2022-12-13 20:01:19,928 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:01:19,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869368054] [2022-12-13 20:01:19,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:19,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:19,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:19,930 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:19,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-13 20:01:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:26,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 11936 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:01:26,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2452 backedges. 1075 proven. 0 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2022-12-13 20:01:26,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:01:26,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869368054] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:26,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:26,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:01:26,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389008077] [2022-12-13 20:01:26,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:26,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:01:26,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:26,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:01:26,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:01:26,688 INFO L87 Difference]: Start difference. First operand 4403 states and 6333 transitions. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 2 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) [2022-12-13 20:01:27,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:27,164 INFO L93 Difference]: Finished difference Result 8793 states and 12648 transitions. [2022-12-13 20:01:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:01:27,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 2 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) Word has length 1033 [2022-12-13 20:01:27,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:27,177 INFO L225 Difference]: With dead ends: 8793 [2022-12-13 20:01:27,177 INFO L226 Difference]: Without dead ends: 4407 [2022-12-13 20:01:27,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 1031 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:01:27,187 INFO L413 NwaCegarLoop]: 5397 mSDtfsCounter, 2 mSDsluCounter, 5394 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10791 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:27,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10791 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:27,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4407 states. [2022-12-13 20:01:27,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4407 to 4405. [2022-12-13 20:01:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4405 states, 3153 states have (on average 1.3317475420234697) internal successors, (4199), 3219 states have internal predecessors, (4199), 1060 states have call successors, (1060), 188 states have call predecessors, (1060), 190 states have return successors, (1076), 1042 states have call predecessors, (1076), 1060 states have call successors, (1076) [2022-12-13 20:01:27,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4405 states to 4405 states and 6335 transitions. [2022-12-13 20:01:27,626 INFO L78 Accepts]: Start accepts. Automaton has 4405 states and 6335 transitions. Word has length 1033 [2022-12-13 20:01:27,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:27,627 INFO L495 AbstractCegarLoop]: Abstraction has 4405 states and 6335 transitions. [2022-12-13 20:01:27,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 2 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) [2022-12-13 20:01:27,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4405 states and 6335 transitions. [2022-12-13 20:01:27,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2022-12-13 20:01:27,645 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:27,646 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 18, 18, 18, 13, 13, 12, 12, 11, 11, 10, 10, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:27,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-12-13 20:01:27,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:27,847 INFO L420 AbstractCegarLoop]: === Iteration 43 === 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)] === [2022-12-13 20:01:27,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:27,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1296711118, now seen corresponding path program 1 times [2022-12-13 20:01:27,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:27,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252026823] [2022-12-13 20:01:27,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:27,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:28,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:28,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252026823] [2022-12-13 20:01:28,564 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:01:28,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301792456] [2022-12-13 20:01:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:28,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:28,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:28,565 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:28,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-13 20:01:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:35,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 11988 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:01:35,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:35,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2454 backedges. 982 proven. 1 refuted. 0 times theorem prover too weak. 1471 trivial. 0 not checked. [2022-12-13 20:01:35,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:35,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2454 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 2442 trivial. 0 not checked. [2022-12-13 20:01:35,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301792456] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:35,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:01:35,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 20:01:35,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948196570] [2022-12-13 20:01:35,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:35,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:01:35,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:35,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:01:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:01:35,858 INFO L87 Difference]: Start difference. First operand 4405 states and 6335 transitions. Second operand has 6 states, 6 states have (on average 104.5) internal successors, (627), 6 states have internal predecessors, (627), 2 states have call successors, (228), 2 states have call predecessors, (228), 2 states have return successors, (220), 2 states have call predecessors, (220), 2 states have call successors, (220) [2022-12-13 20:01:36,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:36,453 INFO L93 Difference]: Finished difference Result 8821 states and 12688 transitions. [2022-12-13 20:01:36,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:01:36,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 104.5) internal successors, (627), 6 states have internal predecessors, (627), 2 states have call successors, (228), 2 states have call predecessors, (228), 2 states have return successors, (220), 2 states have call predecessors, (220), 2 states have call successors, (220) Word has length 1037 [2022-12-13 20:01:36,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:36,466 INFO L225 Difference]: With dead ends: 8821 [2022-12-13 20:01:36,466 INFO L226 Difference]: Without dead ends: 4433 [2022-12-13 20:01:36,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2072 GetRequests, 2068 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:01:36,475 INFO L413 NwaCegarLoop]: 5390 mSDtfsCounter, 30 mSDsluCounter, 5384 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 10774 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:36,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 10774 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:01:36,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2022-12-13 20:01:36,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4429. [2022-12-13 20:01:36,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4429 states, 3177 states have (on average 1.329241422725842) internal successors, (4223), 3243 states have internal predecessors, (4223), 1060 states have call successors, (1060), 188 states have call predecessors, (1060), 190 states have return successors, (1076), 1042 states have call predecessors, (1076), 1060 states have call successors, (1076) [2022-12-13 20:01:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4429 states to 4429 states and 6359 transitions. [2022-12-13 20:01:36,926 INFO L78 Accepts]: Start accepts. Automaton has 4429 states and 6359 transitions. Word has length 1037 [2022-12-13 20:01:36,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:36,926 INFO L495 AbstractCegarLoop]: Abstraction has 4429 states and 6359 transitions. [2022-12-13 20:01:36,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.5) internal successors, (627), 6 states have internal predecessors, (627), 2 states have call successors, (228), 2 states have call predecessors, (228), 2 states have return successors, (220), 2 states have call predecessors, (220), 2 states have call successors, (220) [2022-12-13 20:01:36,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4429 states and 6359 transitions. [2022-12-13 20:01:36,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2022-12-13 20:01:36,954 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:36,955 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 17, 17, 17, 13, 13, 12, 12, 10, 10, 10, 10, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:37,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-13 20:01:37,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-12-13 20:01:37,157 INFO L420 AbstractCegarLoop]: === Iteration 44 === 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)] === [2022-12-13 20:01:37,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:37,158 INFO L85 PathProgramCache]: Analyzing trace with hash -668811789, now seen corresponding path program 1 times [2022-12-13 20:01:37,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:37,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693970807] [2022-12-13 20:01:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:37,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:37,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693970807] [2022-12-13 20:01:37,921 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:01:37,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537245352] [2022-12-13 20:01:37,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:37,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:37,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:37,922 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:37,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-13 20:01:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 11785 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:01:45,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 931 proven. 16 refuted. 0 times theorem prover too weak. 1416 trivial. 0 not checked. [2022-12-13 20:01:45,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:45,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 2340 trivial. 0 not checked. [2022-12-13 20:01:45,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537245352] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:45,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:01:45,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-12-13 20:01:45,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885949453] [2022-12-13 20:01:45,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:45,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:01:45,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:45,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:01:45,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:01:45,513 INFO L87 Difference]: Start difference. First operand 4429 states and 6359 transitions. Second operand has 8 states, 8 states have (on average 77.625) internal successors, (621), 8 states have internal predecessors, (621), 2 states have call successors, (221), 2 states have call predecessors, (221), 2 states have return successors, (213), 2 states have call predecessors, (213), 2 states have call successors, (213) [2022-12-13 20:01:46,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:46,119 INFO L93 Difference]: Finished difference Result 8867 states and 12733 transitions. [2022-12-13 20:01:46,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:01:46,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 77.625) internal successors, (621), 8 states have internal predecessors, (621), 2 states have call successors, (221), 2 states have call predecessors, (221), 2 states have return successors, (213), 2 states have call predecessors, (213), 2 states have call successors, (213) Word has length 1018 [2022-12-13 20:01:46,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:46,132 INFO L225 Difference]: With dead ends: 8867 [2022-12-13 20:01:46,132 INFO L226 Difference]: Without dead ends: 4455 [2022-12-13 20:01:46,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2034 GetRequests, 2024 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:01:46,154 INFO L413 NwaCegarLoop]: 5391 mSDtfsCounter, 43 mSDsluCounter, 10763 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 16154 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:46,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 16154 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:01:46,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4455 states. [2022-12-13 20:01:46,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4455 to 4452. [2022-12-13 20:01:46,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 3200 states have (on average 1.328125) internal successors, (4250), 3266 states have internal predecessors, (4250), 1060 states have call successors, (1060), 188 states have call predecessors, (1060), 190 states have return successors, (1076), 1042 states have call predecessors, (1076), 1060 states have call successors, (1076) [2022-12-13 20:01:46,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 6386 transitions. [2022-12-13 20:01:46,605 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 6386 transitions. Word has length 1018 [2022-12-13 20:01:46,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:46,605 INFO L495 AbstractCegarLoop]: Abstraction has 4452 states and 6386 transitions. [2022-12-13 20:01:46,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.625) internal successors, (621), 8 states have internal predecessors, (621), 2 states have call successors, (221), 2 states have call predecessors, (221), 2 states have return successors, (213), 2 states have call predecessors, (213), 2 states have call successors, (213) [2022-12-13 20:01:46,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 6386 transitions. [2022-12-13 20:01:46,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2022-12-13 20:01:46,624 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:46,624 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 14, 14, 14, 13, 13, 12, 12, 10, 10, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:46,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-12-13 20:01:46,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-12-13 20:01:46,826 INFO L420 AbstractCegarLoop]: === Iteration 45 === 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)] === [2022-12-13 20:01:46,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:46,828 INFO L85 PathProgramCache]: Analyzing trace with hash -143379931, now seen corresponding path program 1 times [2022-12-13 20:01:46,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:46,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745310090] [2022-12-13 20:01:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:46,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:47,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745310090] [2022-12-13 20:01:47,641 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:01:47,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506025271] [2022-12-13 20:01:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:47,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:47,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:47,643 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:47,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-13 20:01:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:54,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 11712 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:01:54,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2261 backedges. 943 proven. 0 refuted. 0 times theorem prover too weak. 1318 trivial. 0 not checked. [2022-12-13 20:01:54,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:01:54,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506025271] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:54,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:54,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:01:54,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829823592] [2022-12-13 20:01:54,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:54,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:01:54,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:54,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:01:54,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:01:54,393 INFO L87 Difference]: Start difference. First operand 4452 states and 6386 transitions. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 2 states have call successors, (132), 2 states have call predecessors, (132), 2 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) [2022-12-13 20:01:55,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:55,078 INFO L93 Difference]: Finished difference Result 9664 states and 13894 transitions. [2022-12-13 20:01:55,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:01:55,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 2 states have call successors, (132), 2 states have call predecessors, (132), 2 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) Word has length 985 [2022-12-13 20:01:55,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:55,091 INFO L225 Difference]: With dead ends: 9664 [2022-12-13 20:01:55,091 INFO L226 Difference]: Without dead ends: 5229 [2022-12-13 20:01:55,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 984 GetRequests, 983 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:01:55,100 INFO L413 NwaCegarLoop]: 6181 mSDtfsCounter, 720 mSDsluCounter, 5493 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 11674 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:55,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 11674 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5229 states. [2022-12-13 20:01:55,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5229 to 4456. [2022-12-13 20:01:55,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 3204 states have (on average 1.3283395755305867) internal successors, (4256), 3270 states have internal predecessors, (4256), 1060 states have call successors, (1060), 188 states have call predecessors, (1060), 190 states have return successors, (1076), 1042 states have call predecessors, (1076), 1060 states have call successors, (1076) [2022-12-13 20:01:55,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 6392 transitions. [2022-12-13 20:01:55,569 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 6392 transitions. Word has length 985 [2022-12-13 20:01:55,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:55,569 INFO L495 AbstractCegarLoop]: Abstraction has 4456 states and 6392 transitions. [2022-12-13 20:01:55,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 2 states have call successors, (132), 2 states have call predecessors, (132), 2 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) [2022-12-13 20:01:55,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 6392 transitions. [2022-12-13 20:01:55,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2022-12-13 20:01:55,588 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:55,588 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 17, 17, 17, 13, 13, 12, 12, 10, 10, 10, 10, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:55,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-12-13 20:01:55,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:55,790 INFO L420 AbstractCegarLoop]: === Iteration 46 === 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)] === [2022-12-13 20:01:55,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:55,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1778623083, now seen corresponding path program 2 times [2022-12-13 20:01:55,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:55,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100196039] [2022-12-13 20:01:55,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:55,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:56,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:56,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100196039] [2022-12-13 20:01:56,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:01:56,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027492365] [2022-12-13 20:01:56,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:01:56,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:56,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:56,575 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:56,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-13 20:02:08,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:02:08,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:02:08,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 11795 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:02:08,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2383 backedges. 994 proven. 1 refuted. 0 times theorem prover too weak. 1388 trivial. 0 not checked. [2022-12-13 20:02:08,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:02:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2383 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2375 trivial. 0 not checked. [2022-12-13 20:02:08,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027492365] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:02:08,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:02:08,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 20:02:08,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937570579] [2022-12-13 20:02:08,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:02:08,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:02:08,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:08,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:02:08,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:02:08,760 INFO L87 Difference]: Start difference. First operand 4456 states and 6392 transitions. Second operand has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 2 states have call successors, (214), 2 states have call predecessors, (214), 2 states have return successors, (206), 2 states have call predecessors, (206), 2 states have call successors, (206) [2022-12-13 20:02:09,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:02:09,526 INFO L93 Difference]: Finished difference Result 8901 states and 12769 transitions. [2022-12-13 20:02:09,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:02:09,527 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 2 states have call successors, (214), 2 states have call predecessors, (214), 2 states have return successors, (206), 2 states have call predecessors, (206), 2 states have call successors, (206) Word has length 1022 [2022-12-13 20:02:09,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:02:09,539 INFO L225 Difference]: With dead ends: 8901 [2022-12-13 20:02:09,540 INFO L226 Difference]: Without dead ends: 4462 [2022-12-13 20:02:09,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2042 GetRequests, 2038 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:02:09,550 INFO L413 NwaCegarLoop]: 5399 mSDtfsCounter, 2 mSDsluCounter, 21572 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 26971 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:02:09,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 26971 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:02:09,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2022-12-13 20:02:10,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 4462. [2022-12-13 20:02:10,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 3210 states have (on average 1.3277258566978194) internal successors, (4262), 3276 states have internal predecessors, (4262), 1060 states have call successors, (1060), 188 states have call predecessors, (1060), 190 states have return successors, (1076), 1042 states have call predecessors, (1076), 1060 states have call successors, (1076) [2022-12-13 20:02:10,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 6398 transitions. [2022-12-13 20:02:10,023 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 6398 transitions. Word has length 1022 [2022-12-13 20:02:10,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:02:10,023 INFO L495 AbstractCegarLoop]: Abstraction has 4462 states and 6398 transitions. [2022-12-13 20:02:10,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 2 states have call successors, (214), 2 states have call predecessors, (214), 2 states have return successors, (206), 2 states have call predecessors, (206), 2 states have call successors, (206) [2022-12-13 20:02:10,024 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 6398 transitions. [2022-12-13 20:02:10,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2022-12-13 20:02:10,042 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:02:10,043 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 18, 18, 18, 13, 13, 12, 12, 11, 11, 10, 10, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:10,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-12-13 20:02:10,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-12-13 20:02:10,245 INFO L420 AbstractCegarLoop]: === Iteration 47 === 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)] === [2022-12-13 20:02:10,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:10,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1197782712, now seen corresponding path program 1 times [2022-12-13 20:02:10,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:10,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279555823] [2022-12-13 20:02:10,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:10,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:11,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:11,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279555823] [2022-12-13 20:02:11,063 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:02:11,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934508782] [2022-12-13 20:02:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:11,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:11,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:11,064 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:11,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-13 20:02:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:18,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 12421 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:02:18,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2504 backedges. 1045 proven. 16 refuted. 0 times theorem prover too weak. 1443 trivial. 0 not checked. [2022-12-13 20:02:19,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:02:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2504 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 2477 trivial. 0 not checked. [2022-12-13 20:02:19,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934508782] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:02:19,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:02:19,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-12-13 20:02:19,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176628419] [2022-12-13 20:02:19,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:02:19,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 20:02:19,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:19,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 20:02:19,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:02:19,448 INFO L87 Difference]: Start difference. First operand 4462 states and 6398 transitions. Second operand has 10 states, 10 states have (on average 63.4) internal successors, (634), 10 states have internal predecessors, (634), 2 states have call successors, (221), 2 states have call predecessors, (221), 2 states have return successors, (213), 2 states have call predecessors, (213), 2 states have call successors, (213) [2022-12-13 20:02:20,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:02:20,367 INFO L93 Difference]: Finished difference Result 8915 states and 12784 transitions. [2022-12-13 20:02:20,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 20:02:20,368 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 63.4) internal successors, (634), 10 states have internal predecessors, (634), 2 states have call successors, (221), 2 states have call predecessors, (221), 2 states have return successors, (213), 2 states have call predecessors, (213), 2 states have call successors, (213) Word has length 1053 [2022-12-13 20:02:20,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:02:20,404 INFO L225 Difference]: With dead ends: 8915 [2022-12-13 20:02:20,404 INFO L226 Difference]: Without dead ends: 4470 [2022-12-13 20:02:20,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2104 GetRequests, 2094 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:02:20,413 INFO L413 NwaCegarLoop]: 5399 mSDtfsCounter, 1 mSDsluCounter, 16179 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21578 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 20:02:20,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21578 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 20:02:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2022-12-13 20:02:20,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 4470. [2022-12-13 20:02:20,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4470 states, 3218 states have (on average 1.326911124922312) internal successors, (4270), 3284 states have internal predecessors, (4270), 1060 states have call successors, (1060), 188 states have call predecessors, (1060), 190 states have return successors, (1076), 1042 states have call predecessors, (1076), 1060 states have call successors, (1076) [2022-12-13 20:02:20,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 6406 transitions. [2022-12-13 20:02:20,885 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 6406 transitions. Word has length 1053 [2022-12-13 20:02:20,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:02:20,885 INFO L495 AbstractCegarLoop]: Abstraction has 4470 states and 6406 transitions. [2022-12-13 20:02:20,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 63.4) internal successors, (634), 10 states have internal predecessors, (634), 2 states have call successors, (221), 2 states have call predecessors, (221), 2 states have return successors, (213), 2 states have call predecessors, (213), 2 states have call successors, (213) [2022-12-13 20:02:20,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 6406 transitions. [2022-12-13 20:02:20,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2022-12-13 20:02:20,904 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:02:20,904 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 17, 17, 17, 13, 13, 12, 12, 10, 10, 10, 10, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:20,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-12-13 20:02:21,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-12-13 20:02:21,106 INFO L420 AbstractCegarLoop]: === Iteration 48 === 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)] === [2022-12-13 20:02:21,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:21,108 INFO L85 PathProgramCache]: Analyzing trace with hash 354011429, now seen corresponding path program 1 times [2022-12-13 20:02:21,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:21,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438763421] [2022-12-13 20:02:21,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:21,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:21,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:21,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438763421] [2022-12-13 20:02:21,971 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:02:21,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564979074] [2022-12-13 20:02:21,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:21,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:21,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:21,972 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:22,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-12-13 20:02:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:30,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 12751 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:02:30,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2446 backedges. 1024 proven. 1 refuted. 0 times theorem prover too weak. 1421 trivial. 0 not checked. [2022-12-13 20:02:30,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:02:30,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2446 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2438 trivial. 0 not checked. [2022-12-13 20:02:30,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564979074] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:02:30,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:02:30,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 20:02:30,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023037544] [2022-12-13 20:02:30,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:02:30,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:02:30,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:30,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:02:30,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:02:30,590 INFO L87 Difference]: Start difference. First operand 4470 states and 6406 transitions. Second operand has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 2 states have call successors, (212), 2 states have call predecessors, (212), 2 states have return successors, (204), 2 states have call predecessors, (204), 2 states have call successors, (204) [2022-12-13 20:02:31,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:02:31,161 INFO L93 Difference]: Finished difference Result 8935 states and 12806 transitions. [2022-12-13 20:02:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:02:31,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 2 states have call successors, (212), 2 states have call predecessors, (212), 2 states have return successors, (204), 2 states have call predecessors, (204), 2 states have call successors, (204) Word has length 1036 [2022-12-13 20:02:31,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:02:31,174 INFO L225 Difference]: With dead ends: 8935 [2022-12-13 20:02:31,174 INFO L226 Difference]: Without dead ends: 4482 [2022-12-13 20:02:31,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2070 GetRequests, 2066 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:02:31,184 INFO L413 NwaCegarLoop]: 5397 mSDtfsCounter, 9 mSDsluCounter, 10788 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 16185 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:02:31,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 16185 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:02:31,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4482 states. [2022-12-13 20:02:31,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4482 to 4482. [2022-12-13 20:02:31,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 3230 states have (on average 1.3256965944272445) internal successors, (4282), 3296 states have internal predecessors, (4282), 1060 states have call successors, (1060), 188 states have call predecessors, (1060), 190 states have return successors, (1076), 1042 states have call predecessors, (1076), 1060 states have call successors, (1076) [2022-12-13 20:02:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 6418 transitions. [2022-12-13 20:02:31,666 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 6418 transitions. Word has length 1036 [2022-12-13 20:02:31,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:02:31,667 INFO L495 AbstractCegarLoop]: Abstraction has 4482 states and 6418 transitions. [2022-12-13 20:02:31,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 2 states have call successors, (212), 2 states have call predecessors, (212), 2 states have return successors, (204), 2 states have call predecessors, (204), 2 states have call successors, (204) [2022-12-13 20:02:31,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 6418 transitions. [2022-12-13 20:02:31,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1015 [2022-12-13 20:02:31,697 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:02:31,697 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 14, 14, 14, 13, 13, 12, 12, 10, 10, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:31,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-12-13 20:02:31,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-12-13 20:02:31,899 INFO L420 AbstractCegarLoop]: === Iteration 49 === 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)] === [2022-12-13 20:02:31,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:31,900 INFO L85 PathProgramCache]: Analyzing trace with hash -730442778, now seen corresponding path program 1 times [2022-12-13 20:02:31,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:31,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327510199] [2022-12-13 20:02:31,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:31,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:32,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:32,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327510199] [2022-12-13 20:02:32,724 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:02:32,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669041402] [2022-12-13 20:02:32,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:32,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:32,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:32,726 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:32,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-12-13 20:02:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:41,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 12817 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:02:41,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 913 proven. 16 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2022-12-13 20:02:41,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:02:41,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 2336 trivial. 0 not checked. [2022-12-13 20:02:41,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669041402] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:02:41,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:02:41,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-12-13 20:02:41,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103223813] [2022-12-13 20:02:41,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:02:41,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:02:41,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:41,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:02:41,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:02:41,563 INFO L87 Difference]: Start difference. First operand 4482 states and 6418 transitions. Second operand has 8 states, 8 states have (on average 76.125) internal successors, (609), 8 states have internal predecessors, (609), 2 states have call successors, (203), 2 states have call predecessors, (203), 2 states have return successors, (195), 2 states have call predecessors, (195), 2 states have call successors, (195) [2022-12-13 20:02:42,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:02:42,129 INFO L93 Difference]: Finished difference Result 8955 states and 12824 transitions. [2022-12-13 20:02:42,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:02:42,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 76.125) internal successors, (609), 8 states have internal predecessors, (609), 2 states have call successors, (203), 2 states have call predecessors, (203), 2 states have return successors, (195), 2 states have call predecessors, (195), 2 states have call successors, (195) Word has length 1014 [2022-12-13 20:02:42,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:02:42,141 INFO L225 Difference]: With dead ends: 8955 [2022-12-13 20:02:42,141 INFO L226 Difference]: Without dead ends: 4490 [2022-12-13 20:02:42,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2026 GetRequests, 2016 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:02:42,150 INFO L413 NwaCegarLoop]: 5397 mSDtfsCounter, 14 mSDsluCounter, 5394 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 10791 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:02:42,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 10791 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:02:42,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4490 states. [2022-12-13 20:02:42,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4490 to 4490. [2022-12-13 20:02:42,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 3238 states have (on average 1.3248919085855466) internal successors, (4290), 3304 states have internal predecessors, (4290), 1060 states have call successors, (1060), 188 states have call predecessors, (1060), 190 states have return successors, (1076), 1042 states have call predecessors, (1076), 1060 states have call successors, (1076) [2022-12-13 20:02:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 6426 transitions. [2022-12-13 20:02:42,634 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 6426 transitions. Word has length 1014 [2022-12-13 20:02:42,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:02:42,634 INFO L495 AbstractCegarLoop]: Abstraction has 4490 states and 6426 transitions. [2022-12-13 20:02:42,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.125) internal successors, (609), 8 states have internal predecessors, (609), 2 states have call successors, (203), 2 states have call predecessors, (203), 2 states have return successors, (195), 2 states have call predecessors, (195), 2 states have call successors, (195) [2022-12-13 20:02:42,635 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 6426 transitions. [2022-12-13 20:02:42,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1057 [2022-12-13 20:02:42,654 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:02:42,654 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 17, 17, 17, 13, 13, 12, 12, 10, 10, 10, 10, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:42,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-12-13 20:02:42,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-12-13 20:02:42,856 INFO L420 AbstractCegarLoop]: === Iteration 50 === 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)] === [2022-12-13 20:02:42,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:42,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1949784605, now seen corresponding path program 1 times [2022-12-13 20:02:42,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:42,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158925627] [2022-12-13 20:02:42,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:42,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:43,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:43,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158925627] [2022-12-13 20:02:43,710 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:02:43,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874120343] [2022-12-13 20:02:43,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:43,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:43,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:43,711 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:43,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-12-13 20:02:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:52,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 12978 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:02:52,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:53,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2516 backedges. 1024 proven. 0 refuted. 0 times theorem prover too weak. 1492 trivial. 0 not checked. [2022-12-13 20:02:53,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:02:53,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874120343] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:53,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:53,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:02:53,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132061531] [2022-12-13 20:02:53,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:53,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:02:53,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:53,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:02:53,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:02:53,026 INFO L87 Difference]: Start difference. First operand 4490 states and 6426 transitions. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 2 states have call successors, (136), 2 states have call predecessors, (136), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2022-12-13 20:02:54,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:02:54,071 INFO L93 Difference]: Finished difference Result 9431 states and 13521 transitions. [2022-12-13 20:02:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:02:54,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 2 states have call successors, (136), 2 states have call predecessors, (136), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) Word has length 1056 [2022-12-13 20:02:54,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:02:54,092 INFO L225 Difference]: With dead ends: 9431 [2022-12-13 20:02:54,093 INFO L226 Difference]: Without dead ends: 4958 [2022-12-13 20:02:54,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 1053 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:02:54,110 INFO L413 NwaCegarLoop]: 5822 mSDtfsCounter, 453 mSDsluCounter, 11266 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 17088 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:02:54,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 17088 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:02:54,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4958 states. [2022-12-13 20:02:54,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4958 to 4492. [2022-12-13 20:02:54,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 3240 states have (on average 1.3246913580246913) internal successors, (4292), 3306 states have internal predecessors, (4292), 1060 states have call successors, (1060), 188 states have call predecessors, (1060), 190 states have return successors, (1076), 1042 states have call predecessors, (1076), 1060 states have call successors, (1076) [2022-12-13 20:02:54,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 6428 transitions. [2022-12-13 20:02:54,877 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 6428 transitions. Word has length 1056 [2022-12-13 20:02:54,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:02:54,878 INFO L495 AbstractCegarLoop]: Abstraction has 4492 states and 6428 transitions. [2022-12-13 20:02:54,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 2 states have call successors, (136), 2 states have call predecessors, (136), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2022-12-13 20:02:54,878 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 6428 transitions. [2022-12-13 20:02:54,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2022-12-13 20:02:54,911 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:02:54,912 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 18, 18, 18, 13, 13, 12, 12, 11, 11, 10, 10, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:54,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-12-13 20:02:55,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:55,113 INFO L420 AbstractCegarLoop]: === Iteration 51 === 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)] === [2022-12-13 20:02:55,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:55,115 INFO L85 PathProgramCache]: Analyzing trace with hash -580890332, now seen corresponding path program 1 times [2022-12-13 20:02:55,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:55,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641310890] [2022-12-13 20:02:55,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:55,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:56,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:56,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641310890] [2022-12-13 20:02:56,194 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:02:56,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353366927] [2022-12-13 20:02:56,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:56,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:56,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:56,195 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:56,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-12-13 20:03:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:04,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 13187 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 20:03:04,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:03:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 982 proven. 0 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2022-12-13 20:03:04,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:03:04,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353366927] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:04,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:04,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:03:04,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725085450] [2022-12-13 20:03:04,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:04,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:03:04,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:04,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:03:04,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:03:04,504 INFO L87 Difference]: Start difference. First operand 4492 states and 6428 transitions. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 4 states have call successors, (138), 2 states have call predecessors, (138), 2 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2022-12-13 20:03:05,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:05,235 INFO L93 Difference]: Finished difference Result 9813 states and 14062 transitions. [2022-12-13 20:03:05,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:03:05,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 4 states have call successors, (138), 2 states have call predecessors, (138), 2 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) Word has length 1081 [2022-12-13 20:03:05,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:05,251 INFO L225 Difference]: With dead ends: 9813 [2022-12-13 20:03:05,251 INFO L226 Difference]: Without dead ends: 5338 [2022-12-13 20:03:05,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1078 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:03:05,264 INFO L413 NwaCegarLoop]: 5865 mSDtfsCounter, 831 mSDsluCounter, 11159 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 17024 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:05,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 17024 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:03:05,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2022-12-13 20:03:05,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 4520. [2022-12-13 20:03:05,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4520 states, 3263 states have (on average 1.3233220962304628) internal successors, (4318), 3329 states have internal predecessors, (4318), 1065 states have call successors, (1065), 188 states have call predecessors, (1065), 190 states have return successors, (1081), 1047 states have call predecessors, (1081), 1065 states have call successors, (1081) [2022-12-13 20:03:05,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4520 states to 4520 states and 6464 transitions. [2022-12-13 20:03:05,767 INFO L78 Accepts]: Start accepts. Automaton has 4520 states and 6464 transitions. Word has length 1081 [2022-12-13 20:03:05,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:05,768 INFO L495 AbstractCegarLoop]: Abstraction has 4520 states and 6464 transitions. [2022-12-13 20:03:05,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 4 states have call successors, (138), 2 states have call predecessors, (138), 2 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2022-12-13 20:03:05,768 INFO L276 IsEmpty]: Start isEmpty. Operand 4520 states and 6464 transitions. [2022-12-13 20:03:05,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1026 [2022-12-13 20:03:05,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:05,787 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 14, 14, 14, 13, 13, 12, 12, 10, 10, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:03:05,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-12-13 20:03:05,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:05,989 INFO L420 AbstractCegarLoop]: === Iteration 52 === 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)] === [2022-12-13 20:03:05,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:05,990 INFO L85 PathProgramCache]: Analyzing trace with hash 205457589, now seen corresponding path program 1 times [2022-12-13 20:03:05,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:05,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273410027] [2022-12-13 20:03:05,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:05,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:06,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:06,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273410027] [2022-12-13 20:03:06,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:03:06,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287766555] [2022-12-13 20:03:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:06,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:06,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:03:06,847 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:03:06,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-12-13 20:03:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:15,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 12912 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:03:15,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:03:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 943 proven. 1 refuted. 0 times theorem prover too weak. 1451 trivial. 0 not checked. [2022-12-13 20:03:15,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:03:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2391 trivial. 0 not checked. [2022-12-13 20:03:16,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287766555] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:03:16,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:03:16,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 20:03:16,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584774107] [2022-12-13 20:03:16,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:03:16,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:03:16,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:16,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:03:16,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:03:16,307 INFO L87 Difference]: Start difference. First operand 4520 states and 6464 transitions. Second operand has 6 states, 6 states have (on average 101.33333333333333) internal successors, (608), 6 states have internal predecessors, (608), 2 states have call successors, (202), 2 states have call predecessors, (202), 2 states have return successors, (194), 2 states have call predecessors, (194), 2 states have call successors, (194) [2022-12-13 20:03:18,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:18,454 INFO L93 Difference]: Finished difference Result 12381 states and 17765 transitions. [2022-12-13 20:03:18,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:03:18,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 101.33333333333333) internal successors, (608), 6 states have internal predecessors, (608), 2 states have call successors, (202), 2 states have call predecessors, (202), 2 states have return successors, (194), 2 states have call predecessors, (194), 2 states have call successors, (194) Word has length 1025 [2022-12-13 20:03:18,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:18,475 INFO L225 Difference]: With dead ends: 12381 [2022-12-13 20:03:18,475 INFO L226 Difference]: Without dead ends: 7878 [2022-12-13 20:03:18,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2048 GetRequests, 2044 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:03:18,490 INFO L413 NwaCegarLoop]: 6691 mSDtfsCounter, 3825 mSDsluCounter, 13570 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4405 SdHoareTripleChecker+Valid, 20261 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:18,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4405 Valid, 20261 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 20:03:18,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7878 states. [2022-12-13 20:03:19,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7878 to 4529. [2022-12-13 20:03:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4529 states, 3272 states have (on average 1.3242665036674817) internal successors, (4333), 3338 states have internal predecessors, (4333), 1065 states have call successors, (1065), 188 states have call predecessors, (1065), 190 states have return successors, (1081), 1047 states have call predecessors, (1081), 1065 states have call successors, (1081) [2022-12-13 20:03:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4529 states to 4529 states and 6479 transitions. [2022-12-13 20:03:19,041 INFO L78 Accepts]: Start accepts. Automaton has 4529 states and 6479 transitions. Word has length 1025 [2022-12-13 20:03:19,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:19,042 INFO L495 AbstractCegarLoop]: Abstraction has 4529 states and 6479 transitions. [2022-12-13 20:03:19,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.33333333333333) internal successors, (608), 6 states have internal predecessors, (608), 2 states have call successors, (202), 2 states have call predecessors, (202), 2 states have return successors, (194), 2 states have call predecessors, (194), 2 states have call successors, (194) [2022-12-13 20:03:19,042 INFO L276 IsEmpty]: Start isEmpty. Operand 4529 states and 6479 transitions. [2022-12-13 20:03:19,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2022-12-13 20:03:19,061 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:19,061 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 18, 18, 18, 13, 13, 12, 12, 11, 11, 10, 10, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:03:19,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-12-13 20:03:19,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:19,263 INFO L420 AbstractCegarLoop]: === Iteration 53 === 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)] === [2022-12-13 20:03:19,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:19,265 INFO L85 PathProgramCache]: Analyzing trace with hash -735546181, now seen corresponding path program 1 times [2022-12-13 20:03:19,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:19,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62848918] [2022-12-13 20:03:19,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:19,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:20,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:20,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62848918] [2022-12-13 20:03:20,269 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:03:20,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670906909] [2022-12-13 20:03:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:20,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:20,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:03:20,271 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:03:20,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-12-13 20:03:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:28,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 13199 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 20:03:28,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:03:28,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 20:03:28,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 20:03:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 852 proven. 0 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2022-12-13 20:03:28,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:03:28,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670906909] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:28,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:28,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:03:28,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884049583] [2022-12-13 20:03:28,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:28,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:03:28,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:28,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:03:28,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:03:28,957 INFO L87 Difference]: Start difference. First operand 4529 states and 6479 transitions. Second operand has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 3 states have call successors, (138), 2 states have call predecessors, (138), 2 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) [2022-12-13 20:03:30,991 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 [] [2022-12-13 20:03:34,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:34,139 INFO L93 Difference]: Finished difference Result 9045 states and 12939 transitions. [2022-12-13 20:03:34,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:03:34,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 3 states have call successors, (138), 2 states have call predecessors, (138), 2 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) Word has length 1084 [2022-12-13 20:03:34,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:34,154 INFO L225 Difference]: With dead ends: 9045 [2022-12-13 20:03:34,155 INFO L226 Difference]: Without dead ends: 4533 [2022-12-13 20:03:34,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1084 GetRequests, 1080 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:03:34,167 INFO L413 NwaCegarLoop]: 5397 mSDtfsCounter, 585 mSDsluCounter, 14237 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 19634 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:34,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 19634 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1247 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-12-13 20:03:34,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4533 states. [2022-12-13 20:03:34,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4533 to 4533. [2022-12-13 20:03:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4533 states, 3276 states have (on average 1.3238705738705738) internal successors, (4337), 3342 states have internal predecessors, (4337), 1065 states have call successors, (1065), 188 states have call predecessors, (1065), 190 states have return successors, (1081), 1047 states have call predecessors, (1081), 1065 states have call successors, (1081) [2022-12-13 20:03:34,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4533 states to 4533 states and 6483 transitions. [2022-12-13 20:03:34,852 INFO L78 Accepts]: Start accepts. Automaton has 4533 states and 6483 transitions. Word has length 1084 [2022-12-13 20:03:34,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:34,852 INFO L495 AbstractCegarLoop]: Abstraction has 4533 states and 6483 transitions. [2022-12-13 20:03:34,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 3 states have call successors, (138), 2 states have call predecessors, (138), 2 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) [2022-12-13 20:03:34,852 INFO L276 IsEmpty]: Start isEmpty. Operand 4533 states and 6483 transitions. [2022-12-13 20:03:34,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2022-12-13 20:03:34,870 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:34,871 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 15, 15, 15, 13, 13, 12, 12, 10, 10, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:03:34,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-12-13 20:03:35,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:35,073 INFO L420 AbstractCegarLoop]: === Iteration 54 === 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)] === [2022-12-13 20:03:35,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:35,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2127873926, now seen corresponding path program 1 times [2022-12-13 20:03:35,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:35,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682982417] [2022-12-13 20:03:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:35,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:35,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:35,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682982417] [2022-12-13 20:03:35,876 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:03:35,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512158241] [2022-12-13 20:03:35,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:35,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:35,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:03:35,877 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:03:35,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-12-13 20:03:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:44,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 12629 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:03:44,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:03:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2141 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 1469 trivial. 0 not checked. [2022-12-13 20:03:44,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:03:44,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512158241] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:44,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:44,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:03:44,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3446301] [2022-12-13 20:03:44,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:44,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:03:44,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:44,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:03:44,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:03:44,929 INFO L87 Difference]: Start difference. First operand 4533 states and 6483 transitions. Second operand has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 2 states have call successors, (124), 2 states have call predecessors, (124), 2 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2022-12-13 20:03:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:46,222 INFO L93 Difference]: Finished difference Result 10738 states and 15385 transitions. [2022-12-13 20:03:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:03:46,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 2 states have call successors, (124), 2 states have call predecessors, (124), 2 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) Word has length 983 [2022-12-13 20:03:46,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:46,241 INFO L225 Difference]: With dead ends: 10738 [2022-12-13 20:03:46,241 INFO L226 Difference]: Without dead ends: 6222 [2022-12-13 20:03:46,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 980 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:03:46,254 INFO L413 NwaCegarLoop]: 6291 mSDtfsCounter, 1437 mSDsluCounter, 11101 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 17392 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:46,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 17392 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:03:46,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6222 states. [2022-12-13 20:03:46,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6222 to 4537. [2022-12-13 20:03:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4537 states, 3280 states have (on average 1.323780487804878) internal successors, (4342), 3346 states have internal predecessors, (4342), 1065 states have call successors, (1065), 188 states have call predecessors, (1065), 190 states have return successors, (1081), 1047 states have call predecessors, (1081), 1065 states have call successors, (1081) [2022-12-13 20:03:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 6488 transitions. [2022-12-13 20:03:46,959 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 6488 transitions. Word has length 983 [2022-12-13 20:03:46,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:46,959 INFO L495 AbstractCegarLoop]: Abstraction has 4537 states and 6488 transitions. [2022-12-13 20:03:46,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 2 states have call successors, (124), 2 states have call predecessors, (124), 2 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2022-12-13 20:03:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 6488 transitions. [2022-12-13 20:03:46,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2022-12-13 20:03:46,979 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:46,979 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 15, 15, 15, 13, 13, 12, 12, 10, 10, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:03:47,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-12-13 20:03:47,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:47,181 INFO L420 AbstractCegarLoop]: === Iteration 55 === 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)] === [2022-12-13 20:03:47,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:47,182 INFO L85 PathProgramCache]: Analyzing trace with hash 397504204, now seen corresponding path program 1 times [2022-12-13 20:03:47,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:47,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863419869] [2022-12-13 20:03:47,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:47,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:48,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:48,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863419869] [2022-12-13 20:03:48,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:03:48,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623824098] [2022-12-13 20:03:48,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:48,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:48,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:03:48,009 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:03:48,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-12-13 20:03:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:57,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 13168 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:03:57,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:03:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2479 backedges. 994 proven. 0 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2022-12-13 20:03:57,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:03:57,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623824098] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:57,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:57,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:03:57,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068637972] [2022-12-13 20:03:57,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:57,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:03:57,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:57,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:03:57,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:03:57,576 INFO L87 Difference]: Start difference. First operand 4537 states and 6488 transitions. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 2 states have call successors, (136), 2 states have call predecessors, (136), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2022-12-13 20:03:58,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:03:58,587 INFO L93 Difference]: Finished difference Result 9904 states and 14175 transitions. [2022-12-13 20:03:58,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:03:58,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 2 states have call successors, (136), 2 states have call predecessors, (136), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) Word has length 1058 [2022-12-13 20:03:58,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:03:58,600 INFO L225 Difference]: With dead ends: 9904 [2022-12-13 20:03:58,600 INFO L226 Difference]: Without dead ends: 5384 [2022-12-13 20:03:58,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1056 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:03:58,610 INFO L413 NwaCegarLoop]: 6246 mSDtfsCounter, 717 mSDsluCounter, 5503 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 11749 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:03:58,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 11749 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:03:58,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5384 states. [2022-12-13 20:03:59,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5384 to 4541. [2022-12-13 20:03:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4541 states, 3284 states have (on average 1.3236906211936663) internal successors, (4347), 3350 states have internal predecessors, (4347), 1065 states have call successors, (1065), 188 states have call predecessors, (1065), 190 states have return successors, (1081), 1047 states have call predecessors, (1081), 1065 states have call successors, (1081) [2022-12-13 20:03:59,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 6493 transitions. [2022-12-13 20:03:59,168 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 6493 transitions. Word has length 1058 [2022-12-13 20:03:59,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:03:59,168 INFO L495 AbstractCegarLoop]: Abstraction has 4541 states and 6493 transitions. [2022-12-13 20:03:59,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 2 states have call successors, (136), 2 states have call predecessors, (136), 2 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2022-12-13 20:03:59,168 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 6493 transitions. [2022-12-13 20:03:59,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1012 [2022-12-13 20:03:59,187 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:59,187 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 16, 16, 16, 13, 13, 12, 12, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:03:59,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-12-13 20:03:59,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-12-13 20:03:59,389 INFO L420 AbstractCegarLoop]: === Iteration 56 === 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)] === [2022-12-13 20:03:59,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:59,390 INFO L85 PathProgramCache]: Analyzing trace with hash 947459020, now seen corresponding path program 1 times [2022-12-13 20:03:59,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:59,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211328729] [2022-12-13 20:03:59,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:59,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:00,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:00,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211328729] [2022-12-13 20:04:00,298 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:04:00,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752961773] [2022-12-13 20:04:00,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:00,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:00,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:04:00,299 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:04:00,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-12-13 20:04:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:10,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 12873 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 20:04:10,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:04:10,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 20:04:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 729 proven. 0 refuted. 0 times theorem prover too weak. 1504 trivial. 0 not checked. [2022-12-13 20:04:10,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:04:10,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752961773] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:04:10,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:04:10,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 20:04:10,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734286313] [2022-12-13 20:04:10,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:04:10,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:04:10,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:10,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:04:10,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:04:10,732 INFO L87 Difference]: Start difference. First operand 4541 states and 6493 transitions. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 3 states have call successors, (128), 3 states have call predecessors, (128), 3 states have return successors, (124), 3 states have call predecessors, (124), 3 states have call successors, (124) [2022-12-13 20:04:12,772 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 [] [2022-12-13 20:04:14,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 20:04:17,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:19,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:21,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:23,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:25,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:28,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:30,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:32,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:34,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:36,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:38,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:40,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:43,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:45,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:47,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:49,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:51,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:54,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:04:58,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:05:00,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:05:02,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:05:04,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:05:06,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:05:09,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:05:13,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:05:13,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:05:13,203 INFO L93 Difference]: Finished difference Result 9214 states and 13144 transitions. [2022-12-13 20:05:13,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:05:13,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 3 states have call successors, (128), 3 states have call predecessors, (128), 3 states have return successors, (124), 3 states have call predecessors, (124), 3 states have call successors, (124) Word has length 1011 [2022-12-13 20:05:13,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:05:13,219 INFO L225 Difference]: With dead ends: 9214 [2022-12-13 20:05:13,219 INFO L226 Difference]: Without dead ends: 4690 [2022-12-13 20:05:13,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1011 GetRequests, 969 SyntacticMatches, 37 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:05:13,231 INFO L413 NwaCegarLoop]: 5486 mSDtfsCounter, 84 mSDsluCounter, 18414 mSDsCounter, 0 mSdLazyCounter, 3488 mSolverCounterSat, 14 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 23900 SdHoareTripleChecker+Invalid, 3529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3488 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.4s IncrementalHoareTripleChecker+Time [2022-12-13 20:05:13,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 23900 Invalid, 3529 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 3488 Invalid, 27 Unknown, 0 Unchecked, 61.4s Time] [2022-12-13 20:05:13,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4690 states. [2022-12-13 20:05:13,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4690 to 4689. [2022-12-13 20:05:13,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 3376 states have (on average 1.317239336492891) internal successors, (4447), 3443 states have internal predecessors, (4447), 1105 states have call successors, (1105), 204 states have call predecessors, (1105), 206 states have return successors, (1121), 1086 states have call predecessors, (1121), 1105 states have call successors, (1121) [2022-12-13 20:05:13,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 6673 transitions. [2022-12-13 20:05:13,823 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 6673 transitions. Word has length 1011 [2022-12-13 20:05:13,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:05:13,823 INFO L495 AbstractCegarLoop]: Abstraction has 4689 states and 6673 transitions. [2022-12-13 20:05:13,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 3 states have call successors, (128), 3 states have call predecessors, (128), 3 states have return successors, (124), 3 states have call predecessors, (124), 3 states have call successors, (124) [2022-12-13 20:05:13,823 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 6673 transitions. [2022-12-13 20:05:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1067 [2022-12-13 20:05:13,843 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:05:13,843 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 17, 17, 17, 13, 13, 12, 12, 10, 10, 10, 10, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:05:13,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-12-13 20:05:14,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-12-13 20:05:14,045 INFO L420 AbstractCegarLoop]: === Iteration 57 === 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)] === [2022-12-13 20:05:14,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:05:14,046 INFO L85 PathProgramCache]: Analyzing trace with hash 40808178, now seen corresponding path program 1 times [2022-12-13 20:05:14,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:05:14,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699774320] [2022-12-13 20:05:14,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:05:14,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:05:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:14,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:05:14,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699774320] [2022-12-13 20:05:14,893 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:05:14,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678273194] [2022-12-13 20:05:14,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:05:14,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:05:14,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:05:14,894 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:05:14,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-12-13 20:05:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:25,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 13025 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 20:05:25,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:05:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2516 backedges. 1040 proven. 0 refuted. 0 times theorem prover too weak. 1476 trivial. 0 not checked. [2022-12-13 20:05:25,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:05:25,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678273194] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:05:25,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:05:25,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 20:05:25,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962275083] [2022-12-13 20:05:25,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:05:25,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:05:25,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:05:25,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:05:25,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:05:25,139 INFO L87 Difference]: Start difference. First operand 4689 states and 6673 transitions. Second operand has 8 states, 8 states have (on average 58.375) internal successors, (467), 7 states have internal predecessors, (467), 2 states have call successors, (137), 2 states have call predecessors, (137), 3 states have return successors, (129), 3 states have call predecessors, (129), 2 states have call successors, (129) [2022-12-13 20:05:26,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:05:26,901 INFO L93 Difference]: Finished difference Result 10330 states and 14725 transitions. [2022-12-13 20:05:26,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 20:05:26,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 58.375) internal successors, (467), 7 states have internal predecessors, (467), 2 states have call successors, (137), 2 states have call predecessors, (137), 3 states have return successors, (129), 3 states have call predecessors, (129), 2 states have call successors, (129) Word has length 1066 [2022-12-13 20:05:26,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:05:26,920 INFO L225 Difference]: With dead ends: 10330 [2022-12-13 20:05:26,920 INFO L226 Difference]: Without dead ends: 5658 [2022-12-13 20:05:26,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1072 GetRequests, 1062 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-13 20:05:26,936 INFO L413 NwaCegarLoop]: 6192 mSDtfsCounter, 2004 mSDsluCounter, 35238 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 41430 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 20:05:26,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 41430 Invalid, 650 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 20:05:26,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2022-12-13 20:05:27,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 4693. [2022-12-13 20:05:27,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4693 states, 3380 states have (on average 1.3168639053254438) internal successors, (4451), 3446 states have internal predecessors, (4451), 1105 states have call successors, (1105), 204 states have call predecessors, (1105), 206 states have return successors, (1121), 1086 states have call predecessors, (1121), 1105 states have call successors, (1121) [2022-12-13 20:05:27,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 6677 transitions. [2022-12-13 20:05:27,573 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 6677 transitions. Word has length 1066 [2022-12-13 20:05:27,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:05:27,573 INFO L495 AbstractCegarLoop]: Abstraction has 4693 states and 6677 transitions. [2022-12-13 20:05:27,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 58.375) internal successors, (467), 7 states have internal predecessors, (467), 2 states have call successors, (137), 2 states have call predecessors, (137), 3 states have return successors, (129), 3 states have call predecessors, (129), 2 states have call successors, (129) [2022-12-13 20:05:27,573 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 6677 transitions. [2022-12-13 20:05:27,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2022-12-13 20:05:27,592 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:05:27,592 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 15, 15, 15, 13, 13, 12, 12, 10, 10, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:05:27,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-12-13 20:05:27,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-12-13 20:05:27,793 INFO L420 AbstractCegarLoop]: === Iteration 58 === 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)] === [2022-12-13 20:05:27,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:05:27,795 INFO L85 PathProgramCache]: Analyzing trace with hash 259309506, now seen corresponding path program 1 times [2022-12-13 20:05:27,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:05:27,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237544631] [2022-12-13 20:05:27,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:05:27,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:05:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:28,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:05:28,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237544631] [2022-12-13 20:05:28,745 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:05:28,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237783339] [2022-12-13 20:05:28,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:05:28,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:05:28,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:05:28,746 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:05:28,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-12-13 20:05:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:05:39,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 12674 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 20:05:39,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:05:39,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 20:05:39,176 WARN L859 $PredicateComparison]: unable to prove that (exists ((|#Ultimate.C_strcpy_dest.offset| Int) (|#Ultimate.C_strcpy_#t~offset2732| Int)) (= (store |c_old(#memory_int)| |c_#Ultimate.C_strcpy_dest.base| (store (select |c_old(#memory_int)| |c_#Ultimate.C_strcpy_dest.base|) (+ |#Ultimate.C_strcpy_dest.offset| |#Ultimate.C_strcpy_#t~offset2732|) |c_#Ultimate.C_strcpy_#t~mem2733|)) |c_#memory_int|)) is different from true [2022-12-13 20:05:39,181 WARN L859 $PredicateComparison]: unable to prove that (exists ((|#Ultimate.C_strcpy_dest.offset| Int) (|#Ultimate.C_strcpy_#t~offset2732| Int)) (= (store |c_old(#memory_int)| |c_#Ultimate.C_strcpy_dest.base| (store (select |c_old(#memory_int)| |c_#Ultimate.C_strcpy_dest.base|) (+ |#Ultimate.C_strcpy_dest.offset| |#Ultimate.C_strcpy_#t~offset2732|) 0)) |c_#memory_int|)) is different from true [2022-12-13 20:05:39,195 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-13 20:05:39,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 20:05:39,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 20:05:39,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2141 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 1469 trivial. 0 not checked. [2022-12-13 20:05:39,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:05:39,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237783339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:05:39,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:05:39,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 20:05:39,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208650432] [2022-12-13 20:05:39,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:05:39,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 20:05:39,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:05:39,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 20:05:39,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=30, Unknown=2, NotChecked=22, Total=72 [2022-12-13 20:05:39,243 INFO L87 Difference]: Start difference. First operand 4693 states and 6677 transitions. Second operand has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 4 states have call successors, (125), 3 states have call predecessors, (125), 3 states have return successors, (121), 4 states have call predecessors, (121), 4 states have call successors, (121) [2022-12-13 20:05:41,271 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 [] [2022-12-13 20:05:43,278 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 [] [2022-12-13 20:05:56,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:05:56,161 INFO L93 Difference]: Finished difference Result 10501 states and 15092 transitions. [2022-12-13 20:05:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 20:05:56,162 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 4 states have call successors, (125), 3 states have call predecessors, (125), 3 states have return successors, (121), 4 states have call predecessors, (121), 4 states have call successors, (121) Word has length 987 [2022-12-13 20:05:56,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:05:56,178 INFO L225 Difference]: With dead ends: 10501 [2022-12-13 20:05:56,178 INFO L226 Difference]: Without dead ends: 5825 [2022-12-13 20:05:56,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 979 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=48, Unknown=2, NotChecked=30, Total=110 [2022-12-13 20:05:56,189 INFO L413 NwaCegarLoop]: 4542 mSDtfsCounter, 2468 mSDsluCounter, 12635 mSDsCounter, 0 mSdLazyCounter, 10564 mSolverCounterSat, 874 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2995 SdHoareTripleChecker+Valid, 17177 SdHoareTripleChecker+Invalid, 25137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 874 IncrementalHoareTripleChecker+Valid, 10564 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 13697 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-12-13 20:05:56,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2995 Valid, 17177 Invalid, 25137 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [874 Valid, 10564 Invalid, 2 Unknown, 13697 Unchecked, 15.4s Time] [2022-12-13 20:05:56,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5825 states. [2022-12-13 20:05:56,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5825 to 4698. [2022-12-13 20:05:56,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4698 states, 3384 states have (on average 1.3167848699763594) internal successors, (4456), 3450 states have internal predecessors, (4456), 1105 states have call successors, (1105), 204 states have call predecessors, (1105), 207 states have return successors, (1124), 1087 states have call predecessors, (1124), 1105 states have call successors, (1124) [2022-12-13 20:05:56,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4698 states to 4698 states and 6685 transitions. [2022-12-13 20:05:56,821 INFO L78 Accepts]: Start accepts. Automaton has 4698 states and 6685 transitions. Word has length 987 [2022-12-13 20:05:56,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:05:56,821 INFO L495 AbstractCegarLoop]: Abstraction has 4698 states and 6685 transitions. [2022-12-13 20:05:56,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.55555555555556) internal successors, (419), 9 states have internal predecessors, (419), 4 states have call successors, (125), 3 states have call predecessors, (125), 3 states have return successors, (121), 4 states have call predecessors, (121), 4 states have call successors, (121) [2022-12-13 20:05:56,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4698 states and 6685 transitions. [2022-12-13 20:05:56,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2022-12-13 20:05:56,840 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:05:56,841 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 15, 15, 15, 13, 13, 12, 12, 10, 10, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:05:56,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-12-13 20:05:57,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:05:57,042 INFO L420 AbstractCegarLoop]: === Iteration 59 === 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)] === [2022-12-13 20:05:57,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:05:57,042 INFO L85 PathProgramCache]: Analyzing trace with hash -897373593, now seen corresponding path program 1 times [2022-12-13 20:05:57,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:05:57,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635071202] [2022-12-13 20:05:57,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:05:57,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:05:57,822 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:05:57,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836870070] [2022-12-13 20:05:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:05:57,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:05:57,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:05:57,823 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:05:57,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-12-13 20:06:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:08,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 13240 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:06:08,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:06:08,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2479 backedges. 1054 proven. 0 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2022-12-13 20:06:08,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:06:08,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:06:08,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635071202] [2022-12-13 20:06:08,264 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:06:08,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836870070] [2022-12-13 20:06:08,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836870070] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:06:08,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:06:08,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:06:08,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961824659] [2022-12-13 20:06:08,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:06:08,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:06:08,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:06:08,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:06:08,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:06:08,268 INFO L87 Difference]: Start difference. First operand 4698 states and 6685 transitions. Second operand has 5 states, 5 states have (on average 94.0) internal successors, (470), 4 states have internal predecessors, (470), 3 states have call successors, (137), 4 states have call predecessors, (137), 2 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) [2022-12-13 20:06:09,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:06:09,270 INFO L93 Difference]: Finished difference Result 9420 states and 13513 transitions. [2022-12-13 20:06:09,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:06:09,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 4 states have internal predecessors, (470), 3 states have call successors, (137), 4 states have call predecessors, (137), 2 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) Word has length 1062 [2022-12-13 20:06:09,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:06:09,286 INFO L225 Difference]: With dead ends: 9420 [2022-12-13 20:06:09,286 INFO L226 Difference]: Without dead ends: 4739 [2022-12-13 20:06:09,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1062 GetRequests, 1058 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:06:09,299 INFO L413 NwaCegarLoop]: 5396 mSDtfsCounter, 51 mSDsluCounter, 16149 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 21545 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:06:09,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 21545 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:06:09,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4739 states. [2022-12-13 20:06:09,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4739 to 4732. [2022-12-13 20:06:09,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4732 states, 3412 states have (on average 1.3165298944900352) internal successors, (4492), 3478 states have internal predecessors, (4492), 1109 states have call successors, (1109), 206 states have call predecessors, (1109), 209 states have return successors, (1132), 1091 states have call predecessors, (1132), 1109 states have call successors, (1132) [2022-12-13 20:06:09,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4732 states to 4732 states and 6733 transitions. [2022-12-13 20:06:09,922 INFO L78 Accepts]: Start accepts. Automaton has 4732 states and 6733 transitions. Word has length 1062 [2022-12-13 20:06:09,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:06:09,922 INFO L495 AbstractCegarLoop]: Abstraction has 4732 states and 6733 transitions. [2022-12-13 20:06:09,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 4 states have internal predecessors, (470), 3 states have call successors, (137), 4 states have call predecessors, (137), 2 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) [2022-12-13 20:06:09,922 INFO L276 IsEmpty]: Start isEmpty. Operand 4732 states and 6733 transitions. [2022-12-13 20:06:09,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1134 [2022-12-13 20:06:09,942 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:06:09,942 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 13, 13, 12, 12, 11, 11, 11, 11, 10, 10, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:06:10,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-12-13 20:06:10,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-12-13 20:06:10,144 INFO L420 AbstractCegarLoop]: === Iteration 60 === 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)] === [2022-12-13 20:06:10,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:06:10,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1781497005, now seen corresponding path program 1 times [2022-12-13 20:06:10,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:06:10,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038507996] [2022-12-13 20:06:10,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:06:10,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:06:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:11,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:06:11,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038507996] [2022-12-13 20:06:11,087 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:06:11,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692053455] [2022-12-13 20:06:11,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:06:11,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:06:11,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:06:11,088 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:06:11,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-12-13 20:06:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:22,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 13374 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 20:06:22,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:06:22,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2706 backedges. 711 proven. 0 refuted. 0 times theorem prover too weak. 1995 trivial. 0 not checked. [2022-12-13 20:06:22,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:06:22,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692053455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:06:22,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:06:22,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:06:22,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78412391] [2022-12-13 20:06:22,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:06:22,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:06:22,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:06:22,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:06:22,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:06:22,286 INFO L87 Difference]: Start difference. First operand 4732 states and 6733 transitions. Second operand has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 2 states have call successors, (142), 2 states have call predecessors, (142), 2 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) [2022-12-13 20:06:22,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:06:22,942 INFO L93 Difference]: Finished difference Result 9455 states and 13454 transitions. [2022-12-13 20:06:22,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:06:22,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 2 states have call successors, (142), 2 states have call predecessors, (142), 2 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) Word has length 1133 [2022-12-13 20:06:22,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:06:22,958 INFO L225 Difference]: With dead ends: 9455 [2022-12-13 20:06:22,958 INFO L226 Difference]: Without dead ends: 4740 [2022-12-13 20:06:22,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1132 GetRequests, 1130 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:06:22,971 INFO L413 NwaCegarLoop]: 5401 mSDtfsCounter, 1 mSDsluCounter, 10795 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16196 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:06:22,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16196 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:06:22,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4740 states. [2022-12-13 20:06:23,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4740 to 4736. [2022-12-13 20:06:23,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4736 states, 3416 states have (on average 1.31615925058548) internal successors, (4496), 3480 states have internal predecessors, (4496), 1109 states have call successors, (1109), 206 states have call predecessors, (1109), 209 states have return successors, (1132), 1091 states have call predecessors, (1132), 1109 states have call successors, (1132) [2022-12-13 20:06:23,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4736 states to 4736 states and 6737 transitions. [2022-12-13 20:06:23,604 INFO L78 Accepts]: Start accepts. Automaton has 4736 states and 6737 transitions. Word has length 1133 [2022-12-13 20:06:23,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:06:23,604 INFO L495 AbstractCegarLoop]: Abstraction has 4736 states and 6737 transitions. [2022-12-13 20:06:23,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 2 states have call successors, (142), 2 states have call predecessors, (142), 2 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) [2022-12-13 20:06:23,604 INFO L276 IsEmpty]: Start isEmpty. Operand 4736 states and 6737 transitions. [2022-12-13 20:06:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2022-12-13 20:06:23,625 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:06:23,625 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 17, 17, 17, 13, 13, 12, 12, 11, 11, 11, 11, 10, 10, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:06:23,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-12-13 20:06:23,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-12-13 20:06:23,826 INFO L420 AbstractCegarLoop]: === Iteration 61 === 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)] === [2022-12-13 20:06:23,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:06:23,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1324457905, now seen corresponding path program 1 times [2022-12-13 20:06:23,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:06:23,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627829683] [2022-12-13 20:06:23,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:06:23,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:06:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:24,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:06:24,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627829683] [2022-12-13 20:06:24,928 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:06:24,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507836515] [2022-12-13 20:06:24,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:06:24,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:06:24,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:06:24,929 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:06:24,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-12-13 20:06:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:35,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 13224 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 20:06:35,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:06:35,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2591 backedges. 1074 proven. 0 refuted. 0 times theorem prover too weak. 1517 trivial. 0 not checked. [2022-12-13 20:06:35,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:06:35,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507836515] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:06:35,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:06:35,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:06:35,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909198418] [2022-12-13 20:06:35,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:06:35,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:06:35,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:06:35,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:06:35,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:06:35,819 INFO L87 Difference]: Start difference. First operand 4736 states and 6737 transitions. Second operand has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 3 states have call successors, (142), 2 states have call predecessors, (142), 2 states have return successors, (134), 3 states have call predecessors, (134), 3 states have call successors, (134) [2022-12-13 20:06:36,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:06:36,797 INFO L93 Difference]: Finished difference Result 9775 states and 13914 transitions. [2022-12-13 20:06:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:06:36,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 3 states have call successors, (142), 2 states have call predecessors, (142), 2 states have return successors, (134), 3 states have call predecessors, (134), 3 states have call successors, (134) Word has length 1100 [2022-12-13 20:06:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:06:36,958 INFO L225 Difference]: With dead ends: 9775 [2022-12-13 20:06:36,958 INFO L226 Difference]: Without dead ends: 5056 [2022-12-13 20:06:36,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1105 GetRequests, 1099 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:06:36,970 INFO L413 NwaCegarLoop]: 5686 mSDtfsCounter, 337 mSDsluCounter, 16674 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 22360 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:06:36,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 22360 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:06:36,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2022-12-13 20:06:37,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 4738. [2022-12-13 20:06:37,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4738 states, 3418 states have (on average 1.3159742539496782) internal successors, (4498), 3482 states have internal predecessors, (4498), 1109 states have call successors, (1109), 206 states have call predecessors, (1109), 209 states have return successors, (1132), 1091 states have call predecessors, (1132), 1109 states have call successors, (1132) [2022-12-13 20:06:37,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4738 states to 4738 states and 6739 transitions. [2022-12-13 20:06:37,610 INFO L78 Accepts]: Start accepts. Automaton has 4738 states and 6739 transitions. Word has length 1100 [2022-12-13 20:06:37,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:06:37,610 INFO L495 AbstractCegarLoop]: Abstraction has 4738 states and 6739 transitions. [2022-12-13 20:06:37,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 3 states have call successors, (142), 2 states have call predecessors, (142), 2 states have return successors, (134), 3 states have call predecessors, (134), 3 states have call successors, (134) [2022-12-13 20:06:37,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4738 states and 6739 transitions. [2022-12-13 20:06:37,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1138 [2022-12-13 20:06:37,631 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:06:37,631 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 13, 13, 12, 12, 11, 11, 11, 11, 10, 10, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:06:37,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-12-13 20:06:37,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:06:37,833 INFO L420 AbstractCegarLoop]: === Iteration 62 === 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)] === [2022-12-13 20:06:37,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:06:37,835 INFO L85 PathProgramCache]: Analyzing trace with hash -127947274, now seen corresponding path program 1 times [2022-12-13 20:06:37,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:06:37,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977801479] [2022-12-13 20:06:37,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:06:37,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:06:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:38,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:06:38,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977801479] [2022-12-13 20:06:38,820 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:06:38,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448290679] [2022-12-13 20:06:38,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:06:38,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:06:38,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:06:38,821 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:06:38,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-12-13 20:06:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:49,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 13263 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-13 20:06:49,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:06:49,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2624 backedges. 1122 proven. 0 refuted. 0 times theorem prover too weak. 1502 trivial. 0 not checked. [2022-12-13 20:06:49,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:06:49,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448290679] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:06:49,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:06:49,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-13 20:06:49,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058189109] [2022-12-13 20:06:49,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:06:49,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 20:06:49,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:06:49,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 20:06:49,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-12-13 20:06:49,689 INFO L87 Difference]: Start difference. First operand 4738 states and 6739 transitions. Second operand has 15 states, 14 states have (on average 35.57142857142857) internal successors, (498), 14 states have internal predecessors, (498), 7 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (142), 7 states have call predecessors, (142), 7 states have call successors, (142) [2022-12-13 20:06:53,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:06:53,530 INFO L93 Difference]: Finished difference Result 11556 states and 16473 transitions. [2022-12-13 20:06:53,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-12-13 20:06:53,531 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 35.57142857142857) internal successors, (498), 14 states have internal predecessors, (498), 7 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (142), 7 states have call predecessors, (142), 7 states have call successors, (142) Word has length 1137 [2022-12-13 20:06:53,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:06:53,546 INFO L225 Difference]: With dead ends: 11556 [2022-12-13 20:06:53,546 INFO L226 Difference]: Without dead ends: 6833 [2022-12-13 20:06:53,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1202 GetRequests, 1132 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1434 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=906, Invalid=4206, Unknown=0, NotChecked=0, Total=5112 [2022-12-13 20:06:53,557 INFO L413 NwaCegarLoop]: 6721 mSDtfsCounter, 2373 mSDsluCounter, 83455 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 757 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2504 SdHoareTripleChecker+Valid, 90176 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:06:53,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2504 Valid, 90176 Invalid, 1940 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [757 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 20:06:53,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6833 states. [2022-12-13 20:06:54,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6833 to 4729. [2022-12-13 20:06:54,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4729 states, 3413 states have (on average 1.3164371520656315) internal successors, (4493), 3477 states have internal predecessors, (4493), 1105 states have call successors, (1105), 206 states have call predecessors, (1105), 209 states have return successors, (1128), 1087 states have call predecessors, (1128), 1105 states have call successors, (1128) [2022-12-13 20:06:54,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4729 states to 4729 states and 6726 transitions. [2022-12-13 20:06:54,219 INFO L78 Accepts]: Start accepts. Automaton has 4729 states and 6726 transitions. Word has length 1137 [2022-12-13 20:06:54,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:06:54,220 INFO L495 AbstractCegarLoop]: Abstraction has 4729 states and 6726 transitions. [2022-12-13 20:06:54,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 35.57142857142857) internal successors, (498), 14 states have internal predecessors, (498), 7 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (142), 7 states have call predecessors, (142), 7 states have call successors, (142) [2022-12-13 20:06:54,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4729 states and 6726 transitions. [2022-12-13 20:06:54,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1183 [2022-12-13 20:06:54,241 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:06:54,241 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 20, 20, 20, 14, 14, 13, 13, 12, 12, 11, 11, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:06:54,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-12-13 20:06:54,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-12-13 20:06:54,443 INFO L420 AbstractCegarLoop]: === Iteration 63 === 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)] === [2022-12-13 20:06:54,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:06:54,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2060506753, now seen corresponding path program 1 times [2022-12-13 20:06:54,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:06:54,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063745843] [2022-12-13 20:06:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:06:54,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:06:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:06:55,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:06:55,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063745843] [2022-12-13 20:06:55,457 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:06:55,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712844316] [2022-12-13 20:06:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:06:55,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:06:55,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:06:55,458 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:06:55,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-12-13 20:07:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:07:07,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 13573 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 20:07:07,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:07:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3182 backedges. 1308 proven. 0 refuted. 0 times theorem prover too weak. 1874 trivial. 0 not checked. [2022-12-13 20:07:07,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:07:07,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712844316] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:07:07,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:07:07,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 20:07:07,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29781845] [2022-12-13 20:07:07,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:07:07,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 20:07:07,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:07:07,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 20:07:07,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:07:07,413 INFO L87 Difference]: Start difference. First operand 4729 states and 6726 transitions. Second operand has 9 states, 9 states have (on average 56.77777777777778) internal successors, (511), 8 states have internal predecessors, (511), 3 states have call successors, (150), 2 states have call predecessors, (150), 3 states have return successors, (142), 4 states have call predecessors, (142), 3 states have call successors, (142) [2022-12-13 20:07:09,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:07:09,748 INFO L93 Difference]: Finished difference Result 11135 states and 15872 transitions. [2022-12-13 20:07:09,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 20:07:09,749 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 56.77777777777778) internal successors, (511), 8 states have internal predecessors, (511), 3 states have call successors, (150), 2 states have call predecessors, (150), 3 states have return successors, (142), 4 states have call predecessors, (142), 3 states have call successors, (142) Word has length 1182 [2022-12-13 20:07:09,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:07:09,763 INFO L225 Difference]: With dead ends: 11135 [2022-12-13 20:07:09,763 INFO L226 Difference]: Without dead ends: 6423 [2022-12-13 20:07:09,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1177 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-12-13 20:07:09,774 INFO L413 NwaCegarLoop]: 6217 mSDtfsCounter, 3281 mSDsluCounter, 42364 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 48581 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 20:07:09,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3367 Valid, 48581 Invalid, 620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [525 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 20:07:09,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6423 states. [2022-12-13 20:07:10,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6423 to 4933. [2022-12-13 20:07:10,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4933 states, 3569 states have (on average 1.313813393107313) internal successors, (4689), 3638 states have internal predecessors, (4689), 1152 states have call successors, (1152), 206 states have call predecessors, (1152), 210 states have return successors, (1181), 1135 states have call predecessors, (1181), 1152 states have call successors, (1181) [2022-12-13 20:07:10,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4933 states to 4933 states and 7022 transitions. [2022-12-13 20:07:10,950 INFO L78 Accepts]: Start accepts. Automaton has 4933 states and 7022 transitions. Word has length 1182 [2022-12-13 20:07:10,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:07:10,950 INFO L495 AbstractCegarLoop]: Abstraction has 4933 states and 7022 transitions. [2022-12-13 20:07:10,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.77777777777778) internal successors, (511), 8 states have internal predecessors, (511), 3 states have call successors, (150), 2 states have call predecessors, (150), 3 states have return successors, (142), 4 states have call predecessors, (142), 3 states have call successors, (142) [2022-12-13 20:07:10,951 INFO L276 IsEmpty]: Start isEmpty. Operand 4933 states and 7022 transitions. [2022-12-13 20:07:10,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2022-12-13 20:07:10,968 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:07:10,969 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 15, 15, 15, 13, 13, 12, 12, 11, 11, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:07:11,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-12-13 20:07:11,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:07:11,170 INFO L420 AbstractCegarLoop]: === Iteration 64 === 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)] === [2022-12-13 20:07:11,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:07:11,173 INFO L85 PathProgramCache]: Analyzing trace with hash -268722095, now seen corresponding path program 1 times [2022-12-13 20:07:11,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:07:11,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525709720] [2022-12-13 20:07:11,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:07:11,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:07:11,976 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:07:11,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314673586] [2022-12-13 20:07:11,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:07:11,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:07:11,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:07:11,978 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:07:11,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-12-13 20:07:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:07:23,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 12714 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 20:07:23,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:07:23,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 20:07:23,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 20:07:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2173 backedges. 675 proven. 0 refuted. 0 times theorem prover too weak. 1498 trivial. 0 not checked. [2022-12-13 20:07:23,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:07:23,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:07:23,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525709720] [2022-12-13 20:07:23,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:07:23,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314673586] [2022-12-13 20:07:23,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314673586] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:07:23,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:07:23,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 20:07:23,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181945211] [2022-12-13 20:07:23,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:07:23,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 20:07:23,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:07:23,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 20:07:23,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:07:23,573 INFO L87 Difference]: Start difference. First operand 4933 states and 7022 transitions. Second operand has 9 states, 9 states have (on average 46.77777777777778) internal successors, (421), 9 states have internal predecessors, (421), 4 states have call successors, (126), 2 states have call predecessors, (126), 3 states have return successors, (122), 4 states have call predecessors, (122), 4 states have call successors, (122) [2022-12-13 20:07:25,601 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 [] [2022-12-13 20:07:27,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 20:07:29,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 20:07:38,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:07:38,256 INFO L93 Difference]: Finished difference Result 10711 states and 15257 transitions. [2022-12-13 20:07:38,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:07:38,257 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 46.77777777777778) internal successors, (421), 9 states have internal predecessors, (421), 4 states have call successors, (126), 2 states have call predecessors, (126), 3 states have return successors, (122), 4 states have call predecessors, (122), 4 states have call successors, (122) Word has length 994 [2022-12-13 20:07:38,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:07:38,272 INFO L225 Difference]: With dead ends: 10711 [2022-12-13 20:07:38,272 INFO L226 Difference]: Without dead ends: 5795 [2022-12-13 20:07:38,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 998 GetRequests, 986 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-12-13 20:07:38,283 INFO L413 NwaCegarLoop]: 6127 mSDtfsCounter, 1144 mSDsluCounter, 36855 mSDsCounter, 0 mSdLazyCounter, 4175 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 42982 SdHoareTripleChecker+Invalid, 4183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 4175 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:07:38,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 42982 Invalid, 4183 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 4175 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2022-12-13 20:07:38,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2022-12-13 20:07:39,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 4939. [2022-12-13 20:07:39,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4939 states, 3575 states have (on average 1.3135664335664337) internal successors, (4696), 3642 states have internal predecessors, (4696), 1152 states have call successors, (1152), 206 states have call predecessors, (1152), 210 states have return successors, (1181), 1137 states have call predecessors, (1181), 1152 states have call successors, (1181) [2022-12-13 20:07:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4939 states to 4939 states and 7029 transitions. [2022-12-13 20:07:39,057 INFO L78 Accepts]: Start accepts. Automaton has 4939 states and 7029 transitions. Word has length 994 [2022-12-13 20:07:39,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:07:39,058 INFO L495 AbstractCegarLoop]: Abstraction has 4939 states and 7029 transitions. [2022-12-13 20:07:39,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.77777777777778) internal successors, (421), 9 states have internal predecessors, (421), 4 states have call successors, (126), 2 states have call predecessors, (126), 3 states have return successors, (122), 4 states have call predecessors, (122), 4 states have call successors, (122) [2022-12-13 20:07:39,058 INFO L276 IsEmpty]: Start isEmpty. Operand 4939 states and 7029 transitions. [2022-12-13 20:07:39,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1287 [2022-12-13 20:07:39,080 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:07:39,081 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 19, 19, 16, 16, 16, 15, 15, 12, 12, 12, 12, 12, 11, 11, 10, 9, 9, 8, 8, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:07:39,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-12-13 20:07:39,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:07:39,282 INFO L420 AbstractCegarLoop]: === Iteration 65 === 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)] === [2022-12-13 20:07:39,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:07:39,284 INFO L85 PathProgramCache]: Analyzing trace with hash -207980220, now seen corresponding path program 1 times [2022-12-13 20:07:39,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:07:39,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757837334] [2022-12-13 20:07:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:07:39,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:07:40,392 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:07:40,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268974331] [2022-12-13 20:07:40,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:07:40,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:07:40,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:07:40,393 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:07:40,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a354f641-3353-43a9-be92-b999b87b5c9f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process