./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:11:28,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:11:28,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:11:28,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:11:28,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:11:28,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:11:28,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:11:28,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:11:28,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:11:28,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:11:28,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:11:28,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:11:28,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:11:28,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:11:28,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:11:28,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:11:28,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:11:28,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:11:28,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:11:28,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:11:28,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:11:28,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:11:28,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:11:28,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:11:28,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:11:28,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:11:28,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:11:28,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:11:28,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:11:28,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:11:28,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:11:28,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:11:28,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:11:28,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:11:28,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:11:28,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:11:28,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:11:28,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:11:28,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:11:28,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:11:28,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:11:28,593 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 08:11:28,607 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:11:28,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:11:28,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:11:28,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:11:28,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:11:28,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:11:28,608 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:11:28,608 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:11:28,608 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:11:28,608 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:11:28,608 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:11:28,608 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:11:28,608 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:11:28,608 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:11:28,609 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:11:28,609 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:11:28,609 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:11:28,609 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:11:28,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:11:28,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:11:28,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:11:28,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:11:28,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:11:28,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:11:28,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:11:28,610 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:11:28,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:11:28,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:11:28,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:11:28,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:11:28,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:11:28,611 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:11:28,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:11:28,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:11:28,611 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:11:28,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:11:28,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:11:28,611 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:11:28,611 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 [2022-12-14 08:11:28,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:11:28,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:11:28,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:11:28,831 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:11:28,831 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:11:28,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2022-12-14 08:11:31,384 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:11:31,812 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:11:31,813 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2022-12-14 08:11:31,842 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/bin/utaipan-gh47qXpMRh/data/c83227b98/cd9359156c714d9c8159e1c2ffd57094/FLAGb142a2858 [2022-12-14 08:11:31,854 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/bin/utaipan-gh47qXpMRh/data/c83227b98/cd9359156c714d9c8159e1c2ffd57094 [2022-12-14 08:11:31,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:11:31,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:11:31,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:11:31,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:11:31,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:11:31,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:11:31" (1/1) ... [2022-12-14 08:11:31,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494ecf5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:11:31, skipping insertion in model container [2022-12-14 08:11:31,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:11:31" (1/1) ... [2022-12-14 08:11:31,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:11:31,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:11:32,520 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-14 08:11:32,552 WARN L623 FunctionHandler]: Unknown extern function ioremap_nocache [2022-12-14 08:11:32,597 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:32,624 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-12-14 08:11:32,635 WARN L623 FunctionHandler]: Unknown extern function skb_tstamp_tx [2022-12-14 08:11:32,640 WARN L623 FunctionHandler]: Unknown extern function skb_clone_tx_timestamp [2022-12-14 08:11:32,667 WARN L623 FunctionHandler]: Unknown extern function __might_sleep [2022-12-14 08:11:32,670 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 08:11:32,717 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-14 08:11:32,718 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-14 08:11:32,729 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 08:11:32,729 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:32,790 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-12-14 08:11:32,830 WARN L623 FunctionHandler]: Unknown extern function get_random_bytes [2022-12-14 08:11:32,840 WARN L623 FunctionHandler]: Unknown extern function mdiobus_alloc_size [2022-12-14 08:11:32,854 WARN L623 FunctionHandler]: Unknown extern function mdiobus_write [2022-12-14 08:11:32,880 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 08:11:32,884 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 08:11:32,905 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:32,913 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:32,925 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:32,927 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:32,928 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:32,933 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:32,934 WARN L623 FunctionHandler]: Unknown extern function phy_connect [2022-12-14 08:11:32,934 WARN L623 FunctionHandler]: Unknown extern function phy_connect [2022-12-14 08:11:32,935 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:32,942 WARN L623 FunctionHandler]: Unknown extern function mdiobus_register [2022-12-14 08:11:32,943 WARN L623 FunctionHandler]: Unknown extern function mdiobus_unregister [2022-12-14 08:11:32,943 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 08:11:32,943 WARN L623 FunctionHandler]: Unknown extern function mdiobus_free [2022-12-14 08:11:32,951 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 08:11:32,953 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 08:11:32,957 WARN L623 FunctionHandler]: Unknown extern function napi_complete [2022-12-14 08:11:32,958 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:32,959 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 08:11:32,960 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-12-14 08:11:32,960 WARN L623 FunctionHandler]: Unknown extern function netif_receive_skb [2022-12-14 08:11:32,961 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:32,961 WARN L623 FunctionHandler]: Unknown extern function napi_complete [2022-12-14 08:11:32,967 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:32,967 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 08:11:32,968 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:32,968 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 08:11:32,969 WARN L623 FunctionHandler]: Unknown extern function __napi_schedule [2022-12-14 08:11:32,970 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:32,976 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:32,979 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 08:11:32,983 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 08:11:32,992 WARN L623 FunctionHandler]: Unknown extern function phy_start_aneg [2022-12-14 08:11:32,992 WARN L623 FunctionHandler]: Unknown extern function phy_start [2022-12-14 08:11:32,996 WARN L623 FunctionHandler]: Unknown extern function phy_stop [2022-12-14 08:11:32,997 WARN L623 FunctionHandler]: Unknown extern function netif_carrier_off [2022-12-14 08:11:33,002 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,003 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,004 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,006 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,007 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,008 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,009 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,010 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,011 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,013 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,014 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,015 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,017 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,018 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,019 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,020 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,021 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,022 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,024 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,025 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,026 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,027 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,028 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,029 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,030 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,032 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,033 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:33,043 WARN L623 FunctionHandler]: Unknown extern function phy_ethtool_gset [2022-12-14 08:11:33,047 WARN L623 FunctionHandler]: Unknown extern function phy_ethtool_sset [2022-12-14 08:11:33,051 WARN L623 FunctionHandler]: Unknown extern function phy_mii_ioctl [2022-12-14 08:11:33,055 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 08:11:33,056 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 08:11:33,056 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 08:11:33,062 WARN L623 FunctionHandler]: Unknown extern function platform_get_resource [2022-12-14 08:11:33,062 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 08:11:33,063 WARN L623 FunctionHandler]: Unknown extern function platform_get_irq [2022-12-14 08:11:33,063 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-12-14 08:11:33,064 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 08:11:33,065 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 08:11:33,066 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 08:11:33,066 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 08:11:33,067 WARN L623 FunctionHandler]: Unknown extern function netif_napi_add [2022-12-14 08:11:33,068 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 08:11:33,068 WARN L623 FunctionHandler]: Unknown extern function phy_register_fixup_for_uid [2022-12-14 08:11:33,069 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-12-14 08:11:33,069 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-12-14 08:11:33,069 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-12-14 08:11:33,082 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-12-14 08:11:33,083 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-12-14 08:11:33,084 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-14 08:11:33,090 WARN L623 FunctionHandler]: Unknown extern function phy_disconnect [2022-12-14 08:11:33,090 WARN L623 FunctionHandler]: Unknown extern function mdiobus_unregister [2022-12-14 08:11:33,091 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 08:11:33,091 WARN L623 FunctionHandler]: Unknown extern function mdiobus_free [2022-12-14 08:11:33,092 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-12-14 08:11:33,348 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,348 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,349 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,349 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,349 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,350 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,350 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,350 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,351 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,351 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,353 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-14 08:11:33,354 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-14 08:11:33,355 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-14 08:11:33,356 WARN L623 FunctionHandler]: Unknown extern function ethtool_op_get_link [2022-12-14 08:11:33,357 WARN L623 FunctionHandler]: Unknown extern function ethtool_op_get_ts_info [2022-12-14 08:11:33,359 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 08:11:33,367 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 08:11:33,368 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 08:11:33,377 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-12-14 08:11:33,398 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-12-14 08:11:33,407 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 08:11:33,408 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 08:11:33,408 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 08:11:33,409 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-12-14 08:11:33,410 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-12-14 08:11:33,411 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 08:11:33,412 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-14 08:11:33,412 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 08:11:33,413 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 08:11:33,413 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-14 08:11:33,414 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 08:11:33,414 WARN L623 FunctionHandler]: Unknown extern function __platform_driver_register [2022-12-14 08:11:33,415 WARN L623 FunctionHandler]: Unknown extern function platform_driver_unregister [2022-12-14 08:11:33,452 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-14 08:11:33,452 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-14 08:11:33,459 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-14 08:11:33,879 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_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305216,305229] [2022-12-14 08:11:33,883 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_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305385,305398] [2022-12-14 08:11:33,883 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_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305552,305565] [2022-12-14 08:11:33,884 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_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305720,305733] [2022-12-14 08:11:33,885 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,886 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,887 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,888 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,897 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,897 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,899 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,901 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:33,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:11:33,926 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:11:34,007 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-14 08:11:34,009 WARN L623 FunctionHandler]: Unknown extern function ioremap_nocache [2022-12-14 08:11:34,010 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,011 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-12-14 08:11:34,012 WARN L623 FunctionHandler]: Unknown extern function skb_tstamp_tx [2022-12-14 08:11:34,013 WARN L623 FunctionHandler]: Unknown extern function skb_clone_tx_timestamp [2022-12-14 08:11:34,014 WARN L623 FunctionHandler]: Unknown extern function __might_sleep [2022-12-14 08:11:34,014 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 08:11:34,016 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-14 08:11:34,017 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-14 08:11:34,018 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 08:11:34,018 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:34,020 WARN L623 FunctionHandler]: Unknown extern function request_threaded_irq [2022-12-14 08:11:34,021 WARN L623 FunctionHandler]: Unknown extern function get_random_bytes [2022-12-14 08:11:34,022 WARN L623 FunctionHandler]: Unknown extern function mdiobus_alloc_size [2022-12-14 08:11:34,022 WARN L623 FunctionHandler]: Unknown extern function mdiobus_write [2022-12-14 08:11:34,023 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 08:11:34,023 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 08:11:34,029 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,030 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,033 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:34,034 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:34,035 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:34,040 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:34,040 WARN L623 FunctionHandler]: Unknown extern function phy_connect [2022-12-14 08:11:34,041 WARN L623 FunctionHandler]: Unknown extern function phy_connect [2022-12-14 08:11:34,041 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:34,046 WARN L623 FunctionHandler]: Unknown extern function mdiobus_register [2022-12-14 08:11:34,046 WARN L623 FunctionHandler]: Unknown extern function mdiobus_unregister [2022-12-14 08:11:34,046 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 08:11:34,046 WARN L623 FunctionHandler]: Unknown extern function mdiobus_free [2022-12-14 08:11:34,048 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 08:11:34,048 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-14 08:11:34,050 WARN L623 FunctionHandler]: Unknown extern function napi_complete [2022-12-14 08:11:34,050 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:34,051 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 08:11:34,051 WARN L623 FunctionHandler]: Unknown extern function eth_type_trans [2022-12-14 08:11:34,052 WARN L623 FunctionHandler]: Unknown extern function netif_receive_skb [2022-12-14 08:11:34,052 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:34,052 WARN L623 FunctionHandler]: Unknown extern function napi_complete [2022-12-14 08:11:34,055 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:34,055 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 08:11:34,056 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 08:11:34,056 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 08:11:34,057 WARN L623 FunctionHandler]: Unknown extern function __napi_schedule [2022-12-14 08:11:34,058 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,060 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,063 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-14 08:11:34,063 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 08:11:34,065 WARN L623 FunctionHandler]: Unknown extern function phy_start_aneg [2022-12-14 08:11:34,065 WARN L623 FunctionHandler]: Unknown extern function phy_start [2022-12-14 08:11:34,065 WARN L623 FunctionHandler]: Unknown extern function phy_stop [2022-12-14 08:11:34,066 WARN L623 FunctionHandler]: Unknown extern function netif_carrier_off [2022-12-14 08:11:34,068 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,069 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,070 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,072 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,073 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,074 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,075 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,076 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,077 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,078 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,079 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,080 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,081 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,081 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,082 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,083 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,084 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,085 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,085 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,086 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,087 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,087 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,088 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,089 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,090 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,091 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,092 WARN L623 FunctionHandler]: Unknown extern function __dynamic_pr_debug [2022-12-14 08:11:34,095 WARN L623 FunctionHandler]: Unknown extern function phy_ethtool_gset [2022-12-14 08:11:34,095 WARN L623 FunctionHandler]: Unknown extern function phy_ethtool_sset [2022-12-14 08:11:34,096 WARN L623 FunctionHandler]: Unknown extern function phy_mii_ioctl [2022-12-14 08:11:34,096 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 08:11:34,097 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 08:11:34,097 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 08:11:34,099 WARN L623 FunctionHandler]: Unknown extern function platform_get_resource [2022-12-14 08:11:34,099 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 08:11:34,100 WARN L623 FunctionHandler]: Unknown extern function platform_get_irq [2022-12-14 08:11:34,100 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-12-14 08:11:34,101 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 08:11:34,102 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 08:11:34,103 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 08:11:34,104 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 08:11:34,105 WARN L623 FunctionHandler]: Unknown extern function netif_napi_add [2022-12-14 08:11:34,106 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-14 08:11:34,106 WARN L623 FunctionHandler]: Unknown extern function phy_register_fixup_for_uid [2022-12-14 08:11:34,106 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-12-14 08:11:34,107 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-12-14 08:11:34,107 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-12-14 08:11:34,108 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-12-14 08:11:34,109 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-12-14 08:11:34,109 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-14 08:11:34,110 WARN L623 FunctionHandler]: Unknown extern function phy_disconnect [2022-12-14 08:11:34,110 WARN L623 FunctionHandler]: Unknown extern function mdiobus_unregister [2022-12-14 08:11:34,110 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 08:11:34,110 WARN L623 FunctionHandler]: Unknown extern function mdiobus_free [2022-12-14 08:11:34,110 WARN L623 FunctionHandler]: Unknown extern function iounmap [2022-12-14 08:11:34,115 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,116 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,116 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,116 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,116 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,116 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,116 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,116 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,117 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,117 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,118 WARN L623 FunctionHandler]: Unknown extern function eth_change_mtu [2022-12-14 08:11:34,118 WARN L623 FunctionHandler]: Unknown extern function eth_mac_addr [2022-12-14 08:11:34,119 WARN L623 FunctionHandler]: Unknown extern function eth_validate_addr [2022-12-14 08:11:34,120 WARN L623 FunctionHandler]: Unknown extern function ethtool_op_get_link [2022-12-14 08:11:34,120 WARN L623 FunctionHandler]: Unknown extern function ethtool_op_get_ts_info [2022-12-14 08:11:34,121 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 08:11:34,123 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 08:11:34,124 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 08:11:34,128 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_probe [2022-12-14 08:11:34,165 WARN L623 FunctionHandler]: Unknown extern function ldv_pre_register_netdev [2022-12-14 08:11:34,171 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 08:11:34,172 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 08:11:34,172 WARN L623 FunctionHandler]: Unknown extern function __ldv_spin_lock [2022-12-14 08:11:34,172 WARN L623 FunctionHandler]: Unknown extern function alloc_etherdev_mqs [2022-12-14 08:11:34,173 WARN L623 FunctionHandler]: Unknown extern function register_netdev [2022-12-14 08:11:34,173 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 08:11:34,173 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-14 08:11:34,173 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 08:11:34,173 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-14 08:11:34,174 WARN L623 FunctionHandler]: Unknown extern function free_irq [2022-12-14 08:11:34,174 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-12-14 08:11:34,174 WARN L623 FunctionHandler]: Unknown extern function __platform_driver_register [2022-12-14 08:11:34,174 WARN L623 FunctionHandler]: Unknown extern function platform_driver_unregister [2022-12-14 08:11:34,176 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-14 08:11:34,176 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-14 08:11:34,177 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-14 08:11:34,191 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_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305216,305229] [2022-12-14 08:11:34,192 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_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305385,305398] [2022-12-14 08:11:34,192 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_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305552,305565] [2022-12-14 08:11:34,192 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_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305720,305733] [2022-12-14 08:11:34,193 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,195 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,195 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,196 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,197 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,197 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,198 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,198 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 08:11:34,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:11:34,318 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:11:34,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:11:34 WrapperNode [2022-12-14 08:11:34,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:11:34,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:11:34,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:11:34,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:11:34,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:11:34" (1/1) ... [2022-12-14 08:11:34,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:11:34" (1/1) ... [2022-12-14 08:11:34,498 INFO L138 Inliner]: procedures = 411, calls = 1985, calls flagged for inlining = 210, calls inlined = 187, statements flattened = 4396 [2022-12-14 08:11:34,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:11:34,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:11:34,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:11:34,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:11:34,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:11:34" (1/1) ... [2022-12-14 08:11:34,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:11:34" (1/1) ... [2022-12-14 08:11:34,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:11:34" (1/1) ... [2022-12-14 08:11:34,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:11:34" (1/1) ... [2022-12-14 08:11:34,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:11:34" (1/1) ... [2022-12-14 08:11:34,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:11:34" (1/1) ... [2022-12-14 08:11:34,630 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:11:34" (1/1) ... [2022-12-14 08:11:34,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:11:34" (1/1) ... [2022-12-14 08:11:34,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:11:34,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:11:34,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:11:34,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:11:34,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:11:34" (1/1) ... [2022-12-14 08:11:34,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:11:34,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:11:34,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:11:34,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf9cf58-31b9-474d-a4be-d7b7dee47b22/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:11:34,727 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_probe [2022-12-14 08:11:34,727 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_probe [2022-12-14 08:11:34,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-12-14 08:11:34,727 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-12-14 08:11:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-14 08:11:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-14 08:11:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-12-14 08:11:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-12-14 08:11:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-12-14 08:11:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-12-14 08:11:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-12-14 08:11:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-12-14 08:11:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-12-14 08:11:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-12-14 08:11:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure __dnet_set_hwaddr [2022-12-14 08:11:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __dnet_set_hwaddr [2022-12-14 08:11:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-12-14 08:11:34,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-12-14 08:11:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-12-14 08:11:34,729 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-12-14 08:11:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-12-14 08:11:34,729 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-12-14 08:11:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-12-14 08:11:34,729 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-12-14 08:11:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-12-14 08:11:34,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-12-14 08:11:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:11:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-12-14 08:11:34,729 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-12-14 08:11:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-12-14 08:11:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-12-14 08:11:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-14 08:11:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-12-14 08:11:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-12-14 08:11:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 08:11:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-12-14 08:11:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-12-14 08:11:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 08:11:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-12-14 08:11:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-12-14 08:11:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_reset_hw [2022-12-14 08:11:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_reset_hw [2022-12-14 08:11:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-12-14 08:11:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-12-14 08:11:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 08:11:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-12-14 08:11:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-12-14 08:11:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-12-14 08:11:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-12-14 08:11:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-12-14 08:11:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-12-14 08:11:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:11:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-12-14 08:11:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-12-14 08:11:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-12-14 08:11:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-12-14 08:11:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-12-14 08:11:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-12-14 08:11:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 08:11:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-12-14 08:11:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-12-14 08:11:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-12-14 08:11:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-12-14 08:11:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-12-14 08:11:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-12-14 08:11:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-12-14 08:11:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-12-14 08:11:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-12-14 08:11:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-12-14 08:11:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-12-14 08:11:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-12-14 08:11:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-12-14 08:11:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-12-14 08:11:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-12-14 08:11:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-12-14 08:11:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:11:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:11:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-12-14 08:11:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-12-14 08:11:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2022-12-14 08:11:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2022-12-14 08:11:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-14 08:11:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-14 08:11:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-12-14 08:11:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-12-14 08:11:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2022-12-14 08:11:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2022-12-14 08:11:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-12-14 08:11:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-12-14 08:11:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_dnet [2022-12-14 08:11:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_dnet [2022-12-14 08:11:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-12-14 08:11:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-12-14 08:11:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_readw_mac [2022-12-14 08:11:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_readw_mac [2022-12-14 08:11:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:11:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 08:11:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 08:11:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-12-14 08:11:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-12-14 08:11:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-12-14 08:11:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-12-14 08:11:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-12-14 08:11:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-12-14 08:11:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-12-14 08:11:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-12-14 08:11:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_close [2022-12-14 08:11:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_close [2022-12-14 08:11:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2022-12-14 08:11:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2022-12-14 08:11:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_handle_link_change [2022-12-14 08:11:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_handle_link_change [2022-12-14 08:11:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-12-14 08:11:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-12-14 08:11:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-12-14 08:11:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-12-14 08:11:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_writew_mac [2022-12-14 08:11:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_writew_mac [2022-12-14 08:11:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-12-14 08:11:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-12-14 08:11:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-12-14 08:11:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-12-14 08:11:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 08:11:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-14 08:11:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-14 08:11:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_remove [2022-12-14 08:11:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_remove [2022-12-14 08:11:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-12-14 08:11:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-12-14 08:11:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_open [2022-12-14 08:11:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_open [2022-12-14 08:11:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure phy_connect [2022-12-14 08:11:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_connect [2022-12-14 08:11:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-12-14 08:11:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-12-14 08:11:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-12-14 08:11:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-12-14 08:11:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:11:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-12-14 08:11:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-12-14 08:11:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-12-14 08:11:34,738 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-12-14 08:11:35,229 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:11:35,231 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:11:35,893 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-12-14 08:11:40,375 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-12-14 08:11:40,432 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:11:41,001 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:11:41,001 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:11:41,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:11:41 BoogieIcfgContainer [2022-12-14 08:11:41,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:11:41,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:11:41,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:11:41,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:11:41,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:11:31" (1/3) ... [2022-12-14 08:11:41,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708757af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:11:41, skipping insertion in model container [2022-12-14 08:11:41,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:11:34" (2/3) ... [2022-12-14 08:11:41,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708757af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:11:41, skipping insertion in model container [2022-12-14 08:11:41,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:11:41" (3/3) ... [2022-12-14 08:11:41,012 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2022-12-14 08:11:41,028 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:11:41,028 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-14 08:11:41,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:11:41,102 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@72d830fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:11:41,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-14 08:11:41,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 971 states, 582 states have (on average 1.3075601374570447) internal successors, (761), 595 states have internal predecessors, (761), 324 states have call successors, (324), 63 states have call predecessors, (324), 62 states have return successors, (317), 315 states have call predecessors, (317), 317 states have call successors, (317) [2022-12-14 08:11:41,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-14 08:11:41,119 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:11:41,119 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:11:41,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:11:41,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:11:41,124 INFO L85 PathProgramCache]: Analyzing trace with hash 221652123, now seen corresponding path program 1 times [2022-12-14 08:11:41,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:11:41,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113324809] [2022-12-14 08:11:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:11:41,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:11:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:11:41,639 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-12-14 08:11:41,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:11:41,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113324809] [2022-12-14 08:11:41,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113324809] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:11:41,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:11:41,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:11:41,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689419817] [2022-12-14 08:11:41,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:11:41,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:11:41,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:11:41,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:11:41,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:11:41,673 INFO L87 Difference]: Start difference. First operand has 971 states, 582 states have (on average 1.3075601374570447) internal successors, (761), 595 states have internal predecessors, (761), 324 states have call successors, (324), 63 states have call predecessors, (324), 62 states have return successors, (317), 315 states have call predecessors, (317), 317 states have call successors, (317) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 08:11:44,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:11:46,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:11:46,311 INFO L93 Difference]: Finished difference Result 2752 states and 4009 transitions. [2022-12-14 08:11:46,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:11:46,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2022-12-14 08:11:46,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:11:46,337 INFO L225 Difference]: With dead ends: 2752 [2022-12-14 08:11:46,338 INFO L226 Difference]: Without dead ends: 1790 [2022-12-14 08:11:46,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:11:46,349 INFO L413 NwaCegarLoop]: 1406 mSDtfsCounter, 1225 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:11:46,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 2521 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 510 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-12-14 08:11:46,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2022-12-14 08:11:46,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1786. [2022-12-14 08:11:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1786 states, 1090 states have (on average 1.3073394495412844) internal successors, (1425), 1114 states have internal predecessors, (1425), 572 states have call successors, (572), 122 states have call predecessors, (572), 121 states have return successors, (569), 565 states have call predecessors, (569), 569 states have call successors, (569) [2022-12-14 08:11:46,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 2566 transitions. [2022-12-14 08:11:46,496 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 2566 transitions. Word has length 117 [2022-12-14 08:11:46,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:11:46,497 INFO L495 AbstractCegarLoop]: Abstraction has 1786 states and 2566 transitions. [2022-12-14 08:11:46,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 08:11:46,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 2566 transitions. [2022-12-14 08:11:46,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-14 08:11:46,500 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:11:46,500 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:11:46,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:11:46,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:11:46,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:11:46,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1564583286, now seen corresponding path program 1 times [2022-12-14 08:11:46,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:11:46,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56781909] [2022-12-14 08:11:46,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:11:46,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:11:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:11:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-12-14 08:11:46,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:11:46,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56781909] [2022-12-14 08:11:46,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56781909] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:11:46,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:11:46,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:11:46,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402970491] [2022-12-14 08:11:46,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:11:46,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:11:46,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:11:46,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:11:46,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:11:46,794 INFO L87 Difference]: Start difference. First operand 1786 states and 2566 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 08:11:49,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:11:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:11:51,512 INFO L93 Difference]: Finished difference Result 5120 states and 7439 transitions. [2022-12-14 08:11:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:11:51,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2022-12-14 08:11:51,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:11:51,528 INFO L225 Difference]: With dead ends: 5120 [2022-12-14 08:11:51,528 INFO L226 Difference]: Without dead ends: 3355 [2022-12-14 08:11:51,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:11:51,535 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 1180 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-14 08:11:51,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 2623 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 530 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-12-14 08:11:51,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2022-12-14 08:11:51,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 3326. [2022-12-14 08:11:51,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 2051 states have (on average 1.3154558751828376) internal successors, (2698), 2101 states have internal predecessors, (2698), 1033 states have call successors, (1033), 242 states have call predecessors, (1033), 239 states have return successors, (1130), 1012 states have call predecessors, (1130), 1030 states have call successors, (1130) [2022-12-14 08:11:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 4861 transitions. [2022-12-14 08:11:51,669 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 4861 transitions. Word has length 119 [2022-12-14 08:11:51,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:11:51,669 INFO L495 AbstractCegarLoop]: Abstraction has 3326 states and 4861 transitions. [2022-12-14 08:11:51,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 08:11:51,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 4861 transitions. [2022-12-14 08:11:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-14 08:11:51,671 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:11:51,671 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:11:51,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 08:11:51,672 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:11:51,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:11:51,672 INFO L85 PathProgramCache]: Analyzing trace with hash -230794351, now seen corresponding path program 1 times [2022-12-14 08:11:51,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:11:51,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971535163] [2022-12-14 08:11:51,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:11:51,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:11:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:11:51,860 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-12-14 08:11:51,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:11:51,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971535163] [2022-12-14 08:11:51,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971535163] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:11:51,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:11:51,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:11:51,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490160365] [2022-12-14 08:11:51,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:11:51,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:11:51,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:11:51,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:11:51,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:11:51,863 INFO L87 Difference]: Start difference. First operand 3326 states and 4861 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 08:11:54,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:11:56,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:11:56,300 INFO L93 Difference]: Finished difference Result 9318 states and 13506 transitions. [2022-12-14 08:11:56,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:11:56,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 127 [2022-12-14 08:11:56,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:11:56,330 INFO L225 Difference]: With dead ends: 9318 [2022-12-14 08:11:56,330 INFO L226 Difference]: Without dead ends: 6013 [2022-12-14 08:11:56,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:11:56,349 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 1012 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:11:56,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 2560 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 620 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-12-14 08:11:56,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6013 states. [2022-12-14 08:11:56,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6013 to 5980. [2022-12-14 08:11:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5980 states, 3649 states have (on average 1.2863798300904357) internal successors, (4694), 3755 states have internal predecessors, (4694), 1863 states have call successors, (1863), 470 states have call predecessors, (1863), 465 states have return successors, (1966), 1814 states have call predecessors, (1966), 1860 states have call successors, (1966) [2022-12-14 08:11:56,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5980 states to 5980 states and 8523 transitions. [2022-12-14 08:11:56,634 INFO L78 Accepts]: Start accepts. Automaton has 5980 states and 8523 transitions. Word has length 127 [2022-12-14 08:11:56,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:11:56,635 INFO L495 AbstractCegarLoop]: Abstraction has 5980 states and 8523 transitions. [2022-12-14 08:11:56,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 08:11:56,635 INFO L276 IsEmpty]: Start isEmpty. Operand 5980 states and 8523 transitions. [2022-12-14 08:11:56,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-14 08:11:56,638 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:11:56,638 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:11:56,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 08:11:56,639 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:11:56,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:11:56,639 INFO L85 PathProgramCache]: Analyzing trace with hash -511256181, now seen corresponding path program 1 times [2022-12-14 08:11:56,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:11:56,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182608229] [2022-12-14 08:11:56,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:11:56,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:11:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:11:56,773 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-12-14 08:11:56,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:11:56,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182608229] [2022-12-14 08:11:56,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182608229] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:11:56,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:11:56,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:11:56,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438918309] [2022-12-14 08:11:56,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:11:56,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:11:56,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:11:56,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:11:56,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:11:56,775 INFO L87 Difference]: Start difference. First operand 5980 states and 8523 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 08:11:59,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:12:01,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:01,393 INFO L93 Difference]: Finished difference Result 16718 states and 24008 transitions. [2022-12-14 08:12:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:12:01,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 135 [2022-12-14 08:12:01,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:01,433 INFO L225 Difference]: With dead ends: 16718 [2022-12-14 08:12:01,433 INFO L226 Difference]: Without dead ends: 10759 [2022-12-14 08:12:01,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:12:01,448 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 1093 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 2493 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:01,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 2493 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 532 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-12-14 08:12:01,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10759 states. [2022-12-14 08:12:01,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10759 to 10718. [2022-12-14 08:12:01,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10718 states, 6533 states have (on average 1.2713913975202817) internal successors, (8306), 6735 states have internal predecessors, (8306), 3303 states have call successors, (3303), 896 states have call predecessors, (3303), 879 states have return successors, (3818), 3178 states have call predecessors, (3818), 3300 states have call successors, (3818) [2022-12-14 08:12:01,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10718 states to 10718 states and 15427 transitions. [2022-12-14 08:12:01,946 INFO L78 Accepts]: Start accepts. Automaton has 10718 states and 15427 transitions. Word has length 135 [2022-12-14 08:12:01,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:01,947 INFO L495 AbstractCegarLoop]: Abstraction has 10718 states and 15427 transitions. [2022-12-14 08:12:01,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 08:12:01,947 INFO L276 IsEmpty]: Start isEmpty. Operand 10718 states and 15427 transitions. [2022-12-14 08:12:01,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-14 08:12:01,950 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:01,950 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 10, 10, 10, 10, 10, 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] [2022-12-14 08:12:01,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 08:12:01,951 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:12:01,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:01,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1990735162, now seen corresponding path program 1 times [2022-12-14 08:12:01,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:01,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384677099] [2022-12-14 08:12:01,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:01,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2022-12-14 08:12:02,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:02,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384677099] [2022-12-14 08:12:02,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384677099] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:12:02,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:12:02,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:12:02,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140542386] [2022-12-14 08:12:02,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:12:02,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:12:02,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:02,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:12:02,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:12:02,138 INFO L87 Difference]: Start difference. First operand 10718 states and 15427 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-14 08:12:05,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:12:06,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:06,934 INFO L93 Difference]: Finished difference Result 20208 states and 29118 transitions. [2022-12-14 08:12:06,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:12:06,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 146 [2022-12-14 08:12:06,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:06,985 INFO L225 Difference]: With dead ends: 20208 [2022-12-14 08:12:06,985 INFO L226 Difference]: Without dead ends: 9511 [2022-12-14 08:12:07,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:12:07,013 INFO L413 NwaCegarLoop]: 1970 mSDtfsCounter, 1179 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:07,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 3067 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 718 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-12-14 08:12:07,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9511 states. [2022-12-14 08:12:07,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9511 to 9479. [2022-12-14 08:12:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9479 states, 5883 states have (on average 1.2694203637599863) internal successors, (7468), 6072 states have internal predecessors, (7468), 2813 states have call successors, (2813), 793 states have call predecessors, (2813), 780 states have return successors, (3302), 2695 states have call predecessors, (3302), 2810 states have call successors, (3302) [2022-12-14 08:12:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9479 states to 9479 states and 13583 transitions. [2022-12-14 08:12:07,445 INFO L78 Accepts]: Start accepts. Automaton has 9479 states and 13583 transitions. Word has length 146 [2022-12-14 08:12:07,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:07,445 INFO L495 AbstractCegarLoop]: Abstraction has 9479 states and 13583 transitions. [2022-12-14 08:12:07,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-14 08:12:07,446 INFO L276 IsEmpty]: Start isEmpty. Operand 9479 states and 13583 transitions. [2022-12-14 08:12:07,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-14 08:12:07,447 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:07,447 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:12:07,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 08:12:07,448 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:12:07,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1593239401, now seen corresponding path program 1 times [2022-12-14 08:12:07,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:07,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276829570] [2022-12-14 08:12:07,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:07,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:07,840 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-12-14 08:12:07,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:07,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276829570] [2022-12-14 08:12:07,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276829570] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:12:07,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:12:07,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:12:07,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062396714] [2022-12-14 08:12:07,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:12:07,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:12:07,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:07,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:12:07,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:12:07,843 INFO L87 Difference]: Start difference. First operand 9479 states and 13583 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 08:12:10,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:12:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:14,521 INFO L93 Difference]: Finished difference Result 18828 states and 26993 transitions. [2022-12-14 08:12:14,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:12:14,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2022-12-14 08:12:14,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:14,582 INFO L225 Difference]: With dead ends: 18828 [2022-12-14 08:12:14,582 INFO L226 Difference]: Without dead ends: 18826 [2022-12-14 08:12:14,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:12:14,588 INFO L413 NwaCegarLoop]: 1395 mSDtfsCounter, 1248 mSDsluCounter, 3869 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 5264 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:14,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1259 Valid, 5264 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-12-14 08:12:14,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18826 states. [2022-12-14 08:12:15,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18826 to 18820. [2022-12-14 08:12:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18820 states, 11668 states have (on average 1.2713404182379158) internal successors, (14834), 12044 states have internal predecessors, (14834), 5588 states have call successors, (5588), 1587 states have call predecessors, (5588), 1561 states have return successors, (6566), 5352 states have call predecessors, (6566), 5582 states have call successors, (6566) [2022-12-14 08:12:15,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18820 states to 18820 states and 26988 transitions. [2022-12-14 08:12:15,202 INFO L78 Accepts]: Start accepts. Automaton has 18820 states and 26988 transitions. Word has length 155 [2022-12-14 08:12:15,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:15,203 INFO L495 AbstractCegarLoop]: Abstraction has 18820 states and 26988 transitions. [2022-12-14 08:12:15,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 08:12:15,203 INFO L276 IsEmpty]: Start isEmpty. Operand 18820 states and 26988 transitions. [2022-12-14 08:12:15,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-14 08:12:15,204 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:15,205 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 4, 4, 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] [2022-12-14 08:12:15,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 08:12:15,205 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:12:15,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:15,205 INFO L85 PathProgramCache]: Analyzing trace with hash 415400284, now seen corresponding path program 1 times [2022-12-14 08:12:15,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:15,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329869666] [2022-12-14 08:12:15,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:15,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-12-14 08:12:15,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:15,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329869666] [2022-12-14 08:12:15,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329869666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:12:15,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:12:15,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:12:15,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898006460] [2022-12-14 08:12:15,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:12:15,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:12:15,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:15,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:12:15,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:12:15,562 INFO L87 Difference]: Start difference. First operand 18820 states and 26988 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 08:12:18,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:12:22,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:22,245 INFO L93 Difference]: Finished difference Result 18832 states and 26996 transitions. [2022-12-14 08:12:22,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:12:22,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 160 [2022-12-14 08:12:22,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:22,300 INFO L225 Difference]: With dead ends: 18832 [2022-12-14 08:12:22,300 INFO L226 Difference]: Without dead ends: 18830 [2022-12-14 08:12:22,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:12:22,308 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 1243 mSDsluCounter, 3869 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:22,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 5267 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-12-14 08:12:22,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18830 states. [2022-12-14 08:12:22,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18830 to 18824. [2022-12-14 08:12:22,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18824 states, 11671 states have (on average 1.271270670893668) internal successors, (14837), 12047 states have internal predecessors, (14837), 5588 states have call successors, (5588), 1588 states have call predecessors, (5588), 1562 states have return successors, (6566), 5352 states have call predecessors, (6566), 5582 states have call successors, (6566) [2022-12-14 08:12:23,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18824 states to 18824 states and 26991 transitions. [2022-12-14 08:12:23,008 INFO L78 Accepts]: Start accepts. Automaton has 18824 states and 26991 transitions. Word has length 160 [2022-12-14 08:12:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:23,008 INFO L495 AbstractCegarLoop]: Abstraction has 18824 states and 26991 transitions. [2022-12-14 08:12:23,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 08:12:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 18824 states and 26991 transitions. [2022-12-14 08:12:23,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-12-14 08:12:23,011 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:23,012 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:12:23,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 08:12:23,012 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:12:23,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:23,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1425138551, now seen corresponding path program 1 times [2022-12-14 08:12:23,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:23,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332749988] [2022-12-14 08:12:23,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:23,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2022-12-14 08:12:23,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:23,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332749988] [2022-12-14 08:12:23,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332749988] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:12:23,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:12:23,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:12:23,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951071626] [2022-12-14 08:12:23,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:12:23,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:12:23,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:23,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:12:23,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:12:23,405 INFO L87 Difference]: Start difference. First operand 18824 states and 26991 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 08:12:26,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:12:30,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:30,120 INFO L93 Difference]: Finished difference Result 18836 states and 26999 transitions. [2022-12-14 08:12:30,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:12:30,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 165 [2022-12-14 08:12:30,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:30,167 INFO L225 Difference]: With dead ends: 18836 [2022-12-14 08:12:30,167 INFO L226 Difference]: Without dead ends: 18834 [2022-12-14 08:12:30,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:12:30,173 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 1243 mSDsluCounter, 3869 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:30,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 5267 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-12-14 08:12:30,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18834 states. [2022-12-14 08:12:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18834 to 18828. [2022-12-14 08:12:30,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18828 states, 11674 states have (on average 1.2712009593969504) internal successors, (14840), 12050 states have internal predecessors, (14840), 5588 states have call successors, (5588), 1589 states have call predecessors, (5588), 1563 states have return successors, (6566), 5352 states have call predecessors, (6566), 5582 states have call successors, (6566) [2022-12-14 08:12:30,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18828 states to 18828 states and 26994 transitions. [2022-12-14 08:12:30,803 INFO L78 Accepts]: Start accepts. Automaton has 18828 states and 26994 transitions. Word has length 165 [2022-12-14 08:12:30,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:30,803 INFO L495 AbstractCegarLoop]: Abstraction has 18828 states and 26994 transitions. [2022-12-14 08:12:30,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 08:12:30,804 INFO L276 IsEmpty]: Start isEmpty. Operand 18828 states and 26994 transitions. [2022-12-14 08:12:30,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-12-14 08:12:30,805 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:30,805 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 6, 6, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:12:30,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 08:12:30,805 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)] === [2022-12-14 08:12:30,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:30,806 INFO L85 PathProgramCache]: Analyzing trace with hash 519168857, now seen corresponding path program 1 times [2022-12-14 08:12:30,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:30,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856945846] [2022-12-14 08:12:30,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:30,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-12-14 08:12:31,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:31,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856945846] [2022-12-14 08:12:31,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856945846] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:12:31,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:12:31,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:12:31,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967195795] [2022-12-14 08:12:31,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:12:31,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:12:31,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:31,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:12:31,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:12:31,084 INFO L87 Difference]: Start difference. First operand 18828 states and 26994 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 08:12:33,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:12:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:37,892 INFO L93 Difference]: Finished difference Result 18840 states and 27002 transitions. [2022-12-14 08:12:37,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:12:37,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 179 [2022-12-14 08:12:37,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:37,947 INFO L225 Difference]: With dead ends: 18840 [2022-12-14 08:12:37,947 INFO L226 Difference]: Without dead ends: 18838 [2022-12-14 08:12:37,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:12:37,955 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 1239 mSDsluCounter, 3869 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:37,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 5267 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-12-14 08:12:37,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18838 states. [2022-12-14 08:12:38,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18838 to 18832. [2022-12-14 08:12:38,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18832 states, 11677 states have (on average 1.2711312837201336) internal successors, (14843), 12053 states have internal predecessors, (14843), 5588 states have call successors, (5588), 1590 states have call predecessors, (5588), 1564 states have return successors, (6566), 5352 states have call predecessors, (6566), 5582 states have call successors, (6566) [2022-12-14 08:12:38,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18832 states to 18832 states and 26997 transitions. [2022-12-14 08:12:38,621 INFO L78 Accepts]: Start accepts. Automaton has 18832 states and 26997 transitions. Word has length 179 [2022-12-14 08:12:38,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:38,621 INFO L495 AbstractCegarLoop]: Abstraction has 18832 states and 26997 transitions. [2022-12-14 08:12:38,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 08:12:38,622 INFO L276 IsEmpty]: Start isEmpty. Operand 18832 states and 26997 transitions. [2022-12-14 08:12:38,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-14 08:12:38,623 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:38,623 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:12:38,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 08:12:38,624 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:12:38,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:38,624 INFO L85 PathProgramCache]: Analyzing trace with hash 645154391, now seen corresponding path program 1 times [2022-12-14 08:12:38,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:38,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479682017] [2022-12-14 08:12:38,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:38,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:38,855 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2022-12-14 08:12:38,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:38,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479682017] [2022-12-14 08:12:38,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479682017] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:12:38,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:12:38,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:12:38,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901802037] [2022-12-14 08:12:38,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:12:38,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:12:38,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:38,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:12:38,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:12:38,857 INFO L87 Difference]: Start difference. First operand 18832 states and 26997 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 08:12:41,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:12:45,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:45,654 INFO L93 Difference]: Finished difference Result 18844 states and 27005 transitions. [2022-12-14 08:12:45,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:12:45,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 175 [2022-12-14 08:12:45,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:45,714 INFO L225 Difference]: With dead ends: 18844 [2022-12-14 08:12:45,715 INFO L226 Difference]: Without dead ends: 18842 [2022-12-14 08:12:45,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:12:45,722 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 1243 mSDsluCounter, 3869 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:45,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 5267 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-12-14 08:12:45,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18842 states. [2022-12-14 08:12:46,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18842 to 18836. [2022-12-14 08:12:46,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18836 states, 11680 states have (on average 1.2710616438356164) internal successors, (14846), 12056 states have internal predecessors, (14846), 5588 states have call successors, (5588), 1591 states have call predecessors, (5588), 1565 states have return successors, (6566), 5352 states have call predecessors, (6566), 5582 states have call successors, (6566) [2022-12-14 08:12:46,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18836 states to 18836 states and 27000 transitions. [2022-12-14 08:12:46,511 INFO L78 Accepts]: Start accepts. Automaton has 18836 states and 27000 transitions. Word has length 175 [2022-12-14 08:12:46,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:46,512 INFO L495 AbstractCegarLoop]: Abstraction has 18836 states and 27000 transitions. [2022-12-14 08:12:46,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 08:12:46,512 INFO L276 IsEmpty]: Start isEmpty. Operand 18836 states and 27000 transitions. [2022-12-14 08:12:46,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-12-14 08:12:46,514 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:46,514 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:12:46,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 08:12:46,514 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:12:46,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:46,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1348618908, now seen corresponding path program 1 times [2022-12-14 08:12:46,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:46,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991279095] [2022-12-14 08:12:46,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:46,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:46,787 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2022-12-14 08:12:46,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:46,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991279095] [2022-12-14 08:12:46,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991279095] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:12:46,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:12:46,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:12:46,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113789053] [2022-12-14 08:12:46,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:12:46,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:12:46,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:46,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:12:46,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:12:46,789 INFO L87 Difference]: Start difference. First operand 18836 states and 27000 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 08:12:49,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:12:53,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:53,523 INFO L93 Difference]: Finished difference Result 18848 states and 27008 transitions. [2022-12-14 08:12:53,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:12:53,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 180 [2022-12-14 08:12:53,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:53,569 INFO L225 Difference]: With dead ends: 18848 [2022-12-14 08:12:53,569 INFO L226 Difference]: Without dead ends: 18846 [2022-12-14 08:12:53,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:12:53,575 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 1243 mSDsluCounter, 3869 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:53,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 5267 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-12-14 08:12:53,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18846 states. [2022-12-14 08:12:54,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18846 to 18840. [2022-12-14 08:12:54,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18840 states, 11683 states have (on average 1.2709920397158263) internal successors, (14849), 12059 states have internal predecessors, (14849), 5588 states have call successors, (5588), 1592 states have call predecessors, (5588), 1566 states have return successors, (6566), 5352 states have call predecessors, (6566), 5582 states have call successors, (6566) [2022-12-14 08:12:54,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18840 states to 18840 states and 27003 transitions. [2022-12-14 08:12:54,289 INFO L78 Accepts]: Start accepts. Automaton has 18840 states and 27003 transitions. Word has length 180 [2022-12-14 08:12:54,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:54,289 INFO L495 AbstractCegarLoop]: Abstraction has 18840 states and 27003 transitions. [2022-12-14 08:12:54,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 08:12:54,290 INFO L276 IsEmpty]: Start isEmpty. Operand 18840 states and 27003 transitions. [2022-12-14 08:12:54,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-12-14 08:12:54,291 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:54,292 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:12:54,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 08:12:54,292 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:12:54,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:54,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1609927226, now seen corresponding path program 1 times [2022-12-14 08:12:54,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:54,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881189058] [2022-12-14 08:12:54,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:54,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:54,542 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2022-12-14 08:12:54,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:54,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881189058] [2022-12-14 08:12:54,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881189058] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:12:54,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:12:54,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:12:54,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610120994] [2022-12-14 08:12:54,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:12:54,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:12:54,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:54,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:12:54,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:12:54,544 INFO L87 Difference]: Start difference. First operand 18840 states and 27003 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-12-14 08:12:57,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:13:01,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:01,773 INFO L93 Difference]: Finished difference Result 27401 states and 39112 transitions. [2022-12-14 08:13:01,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:13:01,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 194 [2022-12-14 08:13:01,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:01,876 INFO L225 Difference]: With dead ends: 27401 [2022-12-14 08:13:01,876 INFO L226 Difference]: Without dead ends: 27399 [2022-12-14 08:13:01,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:13:01,885 INFO L413 NwaCegarLoop]: 1363 mSDtfsCounter, 1066 mSDsluCounter, 3791 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 5154 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:01,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 5154 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1030 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-12-14 08:13:01,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27399 states. [2022-12-14 08:13:02,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27399 to 27381. [2022-12-14 08:13:02,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27381 states, 16959 states have (on average 1.2696503331564362) internal successors, (21532), 17542 states have internal predecessors, (21532), 8047 states have call successors, (8047), 2445 states have call predecessors, (8047), 2372 states have return successors, (9514), 7627 states have call predecessors, (9514), 8038 states have call successors, (9514) [2022-12-14 08:13:02,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27381 states to 27381 states and 39093 transitions. [2022-12-14 08:13:02,901 INFO L78 Accepts]: Start accepts. Automaton has 27381 states and 39093 transitions. Word has length 194 [2022-12-14 08:13:02,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:02,901 INFO L495 AbstractCegarLoop]: Abstraction has 27381 states and 39093 transitions. [2022-12-14 08:13:02,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-12-14 08:13:02,902 INFO L276 IsEmpty]: Start isEmpty. Operand 27381 states and 39093 transitions. [2022-12-14 08:13:02,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-12-14 08:13:02,904 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:02,904 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:02,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 08:13:02,904 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:13:02,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:02,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1384663868, now seen corresponding path program 1 times [2022-12-14 08:13:02,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:02,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707106516] [2022-12-14 08:13:02,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:02,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2022-12-14 08:13:03,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:03,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707106516] [2022-12-14 08:13:03,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707106516] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:03,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:03,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:13:03,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447892384] [2022-12-14 08:13:03,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:03,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:13:03,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:03,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:13:03,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:13:03,123 INFO L87 Difference]: Start difference. First operand 27381 states and 39093 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 08:13:06,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:13:10,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:10,365 INFO L93 Difference]: Finished difference Result 27393 states and 39101 transitions. [2022-12-14 08:13:10,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:13:10,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 190 [2022-12-14 08:13:10,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:10,472 INFO L225 Difference]: With dead ends: 27393 [2022-12-14 08:13:10,472 INFO L226 Difference]: Without dead ends: 27391 [2022-12-14 08:13:10,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:13:10,481 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 1243 mSDsluCounter, 3869 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:10,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 5267 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-12-14 08:13:10,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27391 states. [2022-12-14 08:13:11,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27391 to 27385. [2022-12-14 08:13:11,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27385 states, 16962 states have (on average 1.269602641197972) internal successors, (21535), 17545 states have internal predecessors, (21535), 8047 states have call successors, (8047), 2446 states have call predecessors, (8047), 2373 states have return successors, (9514), 7627 states have call predecessors, (9514), 8038 states have call successors, (9514) [2022-12-14 08:13:11,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27385 states to 27385 states and 39096 transitions. [2022-12-14 08:13:11,550 INFO L78 Accepts]: Start accepts. Automaton has 27385 states and 39096 transitions. Word has length 190 [2022-12-14 08:13:11,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:11,550 INFO L495 AbstractCegarLoop]: Abstraction has 27385 states and 39096 transitions. [2022-12-14 08:13:11,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 08:13:11,550 INFO L276 IsEmpty]: Start isEmpty. Operand 27385 states and 39096 transitions. [2022-12-14 08:13:11,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-12-14 08:13:11,552 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:11,553 INFO L195 NwaCegarLoop]: trace histogram [15, 10, 10, 10, 10, 10, 10, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:11,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 08:13:11,553 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:13:11,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:11,553 INFO L85 PathProgramCache]: Analyzing trace with hash -946803760, now seen corresponding path program 1 times [2022-12-14 08:13:11,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:11,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468435883] [2022-12-14 08:13:11,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:11,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2022-12-14 08:13:11,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:11,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468435883] [2022-12-14 08:13:11,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468435883] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:11,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:11,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:13:11,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089287916] [2022-12-14 08:13:11,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:11,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:13:11,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:11,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:13:11,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:13:11,707 INFO L87 Difference]: Start difference. First operand 27385 states and 39096 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-12-14 08:13:15,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:13:18,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:18,035 INFO L93 Difference]: Finished difference Result 65935 states and 94414 transitions. [2022-12-14 08:13:18,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:13:18,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 189 [2022-12-14 08:13:18,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:18,153 INFO L225 Difference]: With dead ends: 65935 [2022-12-14 08:13:18,153 INFO L226 Difference]: Without dead ends: 38632 [2022-12-14 08:13:18,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:13:18,218 INFO L413 NwaCegarLoop]: 2059 mSDtfsCounter, 1176 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:18,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 3152 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 740 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-12-14 08:13:18,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38632 states. [2022-12-14 08:13:19,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38632 to 38512. [2022-12-14 08:13:19,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38512 states, 24028 states have (on average 1.271183619111037) internal successors, (30544), 24854 states have internal predecessors, (30544), 11150 states have call successors, (11150), 3433 states have call predecessors, (11150), 3331 states have return successors, (13316), 10556 states have call predecessors, (13316), 11141 states have call successors, (13316) [2022-12-14 08:13:19,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38512 states to 38512 states and 55010 transitions. [2022-12-14 08:13:19,965 INFO L78 Accepts]: Start accepts. Automaton has 38512 states and 55010 transitions. Word has length 189 [2022-12-14 08:13:19,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:19,965 INFO L495 AbstractCegarLoop]: Abstraction has 38512 states and 55010 transitions. [2022-12-14 08:13:19,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-12-14 08:13:19,965 INFO L276 IsEmpty]: Start isEmpty. Operand 38512 states and 55010 transitions. [2022-12-14 08:13:19,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-12-14 08:13:19,967 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:19,967 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 9, 8, 8, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:19,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 08:13:19,967 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:13:19,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:19,967 INFO L85 PathProgramCache]: Analyzing trace with hash -347220969, now seen corresponding path program 1 times [2022-12-14 08:13:19,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:19,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134497369] [2022-12-14 08:13:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:19,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2022-12-14 08:13:20,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:20,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134497369] [2022-12-14 08:13:20,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134497369] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:20,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:20,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:13:20,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887340224] [2022-12-14 08:13:20,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:20,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:13:20,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:20,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:13:20,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:13:20,214 INFO L87 Difference]: Start difference. First operand 38512 states and 55010 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-12-14 08:13:23,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:13:27,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:27,924 INFO L93 Difference]: Finished difference Result 38524 states and 55018 transitions. [2022-12-14 08:13:27,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:13:27,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 195 [2022-12-14 08:13:27,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:28,041 INFO L225 Difference]: With dead ends: 38524 [2022-12-14 08:13:28,042 INFO L226 Difference]: Without dead ends: 38522 [2022-12-14 08:13:28,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:13:28,058 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 1243 mSDsluCounter, 3869 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:28,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 5267 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-12-14 08:13:28,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38522 states. [2022-12-14 08:13:29,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38522 to 38516. [2022-12-14 08:13:29,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38516 states, 24031 states have (on average 1.271149764887021) internal successors, (30547), 24857 states have internal predecessors, (30547), 11150 states have call successors, (11150), 3434 states have call predecessors, (11150), 3332 states have return successors, (13316), 10556 states have call predecessors, (13316), 11141 states have call successors, (13316) [2022-12-14 08:13:29,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38516 states to 38516 states and 55013 transitions. [2022-12-14 08:13:29,623 INFO L78 Accepts]: Start accepts. Automaton has 38516 states and 55013 transitions. Word has length 195 [2022-12-14 08:13:29,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:29,623 INFO L495 AbstractCegarLoop]: Abstraction has 38516 states and 55013 transitions. [2022-12-14 08:13:29,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-12-14 08:13:29,623 INFO L276 IsEmpty]: Start isEmpty. Operand 38516 states and 55013 transitions. [2022-12-14 08:13:29,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-12-14 08:13:29,625 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:29,625 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 10, 10, 10, 9, 9, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:29,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 08:13:29,625 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:13:29,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:29,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1903184932, now seen corresponding path program 1 times [2022-12-14 08:13:29,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:29,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477727154] [2022-12-14 08:13:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:29,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2022-12-14 08:13:29,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:29,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477727154] [2022-12-14 08:13:29,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477727154] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:29,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:29,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:13:29,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939013046] [2022-12-14 08:13:29,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:29,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:13:29,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:29,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:13:29,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:13:29,848 INFO L87 Difference]: Start difference. First operand 38516 states and 55013 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 08:13:33,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:13:37,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:37,548 INFO L93 Difference]: Finished difference Result 38528 states and 55021 transitions. [2022-12-14 08:13:37,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:13:37,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 200 [2022-12-14 08:13:37,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:37,673 INFO L225 Difference]: With dead ends: 38528 [2022-12-14 08:13:37,673 INFO L226 Difference]: Without dead ends: 38526 [2022-12-14 08:13:37,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:13:37,693 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 1243 mSDsluCounter, 3869 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:37,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1245 Valid, 5267 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-12-14 08:13:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38526 states. [2022-12-14 08:13:39,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38526 to 38520. [2022-12-14 08:13:39,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38520 states, 24034 states have (on average 1.2711159191145878) internal successors, (30550), 24860 states have internal predecessors, (30550), 11150 states have call successors, (11150), 3435 states have call predecessors, (11150), 3333 states have return successors, (13316), 10556 states have call predecessors, (13316), 11141 states have call successors, (13316) [2022-12-14 08:13:39,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38520 states to 38520 states and 55016 transitions. [2022-12-14 08:13:39,343 INFO L78 Accepts]: Start accepts. Automaton has 38520 states and 55016 transitions. Word has length 200 [2022-12-14 08:13:39,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:39,343 INFO L495 AbstractCegarLoop]: Abstraction has 38520 states and 55016 transitions. [2022-12-14 08:13:39,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 08:13:39,343 INFO L276 IsEmpty]: Start isEmpty. Operand 38520 states and 55016 transitions. [2022-12-14 08:13:39,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-12-14 08:13:39,345 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:39,345 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:39,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 08:13:39,345 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:13:39,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:39,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1958258810, now seen corresponding path program 1 times [2022-12-14 08:13:39,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:39,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588996192] [2022-12-14 08:13:39,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:39,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2022-12-14 08:13:39,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:39,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588996192] [2022-12-14 08:13:39,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588996192] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:39,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:39,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:13:39,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985863507] [2022-12-14 08:13:39,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:39,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:13:39,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:39,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:13:39,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:13:39,568 INFO L87 Difference]: Start difference. First operand 38520 states and 55016 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-12-14 08:13:42,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:13:47,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:47,284 INFO L93 Difference]: Finished difference Result 38532 states and 55024 transitions. [2022-12-14 08:13:47,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:13:47,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 214 [2022-12-14 08:13:47,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:47,414 INFO L225 Difference]: With dead ends: 38532 [2022-12-14 08:13:47,414 INFO L226 Difference]: Without dead ends: 38528 [2022-12-14 08:13:47,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:13:47,434 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 1239 mSDsluCounter, 3869 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:47,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 5267 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-12-14 08:13:47,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38528 states. [2022-12-14 08:13:48,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38528 to 38522. [2022-12-14 08:13:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38522 states, 24036 states have (on average 1.2710517556997836) internal successors, (30551), 24861 states have internal predecessors, (30551), 11150 states have call successors, (11150), 3436 states have call predecessors, (11150), 3333 states have return successors, (13316), 10556 states have call predecessors, (13316), 11141 states have call successors, (13316) [2022-12-14 08:13:49,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38522 states to 38522 states and 55017 transitions. [2022-12-14 08:13:49,148 INFO L78 Accepts]: Start accepts. Automaton has 38522 states and 55017 transitions. Word has length 214 [2022-12-14 08:13:49,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:49,149 INFO L495 AbstractCegarLoop]: Abstraction has 38522 states and 55017 transitions. [2022-12-14 08:13:49,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-12-14 08:13:49,149 INFO L276 IsEmpty]: Start isEmpty. Operand 38522 states and 55017 transitions. [2022-12-14 08:13:49,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-12-14 08:13:49,151 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:49,151 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 11, 11, 10, 10, 10, 10, 10, 10, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:49,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 08:13:49,151 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:13:49,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:49,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1007463207, now seen corresponding path program 1 times [2022-12-14 08:13:49,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:49,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375705727] [2022-12-14 08:13:49,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:49,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2022-12-14 08:13:49,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:49,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375705727] [2022-12-14 08:13:49,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375705727] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:49,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:49,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:13:49,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079520841] [2022-12-14 08:13:49,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:49,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:13:49,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:49,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:13:49,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:13:49,384 INFO L87 Difference]: Start difference. First operand 38522 states and 55017 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 08:13:52,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:13:57,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:57,117 INFO L93 Difference]: Finished difference Result 38528 states and 55020 transitions. [2022-12-14 08:13:57,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:13:57,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 219 [2022-12-14 08:13:57,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:57,234 INFO L225 Difference]: With dead ends: 38528 [2022-12-14 08:13:57,234 INFO L226 Difference]: Without dead ends: 38342 [2022-12-14 08:13:57,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:13:57,250 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 1235 mSDsluCounter, 3871 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 5269 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:57,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 5269 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1022 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-12-14 08:13:57,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38342 states. [2022-12-14 08:13:58,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38342 to 38338. [2022-12-14 08:13:58,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38338 states, 23974 states have (on average 1.2697505631100359) internal successors, (30441), 24752 states have internal predecessors, (30441), 11040 states have call successors, (11040), 3422 states have call predecessors, (11040), 3321 states have return successors, (13209), 10495 states have call predecessors, (13209), 11034 states have call successors, (13209) [2022-12-14 08:13:58,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38338 states to 38338 states and 54690 transitions. [2022-12-14 08:13:58,990 INFO L78 Accepts]: Start accepts. Automaton has 38338 states and 54690 transitions. Word has length 219 [2022-12-14 08:13:58,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:58,991 INFO L495 AbstractCegarLoop]: Abstraction has 38338 states and 54690 transitions. [2022-12-14 08:13:58,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-14 08:13:58,991 INFO L276 IsEmpty]: Start isEmpty. Operand 38338 states and 54690 transitions. [2022-12-14 08:13:58,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-12-14 08:13:58,993 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:58,993 INFO L195 NwaCegarLoop]: trace histogram [17, 10, 10, 10, 10, 10, 10, 7, 7, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:58,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 08:13:58,993 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:13:58,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:58,994 INFO L85 PathProgramCache]: Analyzing trace with hash -301871751, now seen corresponding path program 1 times [2022-12-14 08:13:58,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:58,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619513890] [2022-12-14 08:13:58,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:58,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:59,385 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2022-12-14 08:13:59,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:59,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619513890] [2022-12-14 08:13:59,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619513890] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:59,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:59,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:13:59,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635279673] [2022-12-14 08:13:59,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:59,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:13:59,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:59,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:13:59,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:13:59,387 INFO L87 Difference]: Start difference. First operand 38338 states and 54690 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-12-14 08:14:02,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:14:05,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:14:05,933 INFO L93 Difference]: Finished difference Result 88145 states and 124928 transitions. [2022-12-14 08:14:05,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:14:05,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 230 [2022-12-14 08:14:05,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:14:06,155 INFO L225 Difference]: With dead ends: 88145 [2022-12-14 08:14:06,155 INFO L226 Difference]: Without dead ends: 49889 [2022-12-14 08:14:06,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:14:06,268 INFO L413 NwaCegarLoop]: 1462 mSDtfsCounter, 1241 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 2356 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-14 08:14:06,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 2356 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 509 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-12-14 08:14:06,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49889 states. [2022-12-14 08:14:08,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49889 to 49817. [2022-12-14 08:14:08,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49817 states, 30917 states have (on average 1.2665847268493062) internal successors, (39159), 31988 states have internal predecessors, (39159), 14421 states have call successors, (14421), 4604 states have call predecessors, (14421), 4476 states have return successors, (16629), 13678 states have call predecessors, (16629), 14415 states have call successors, (16629) [2022-12-14 08:14:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49817 states to 49817 states and 70209 transitions. [2022-12-14 08:14:09,072 INFO L78 Accepts]: Start accepts. Automaton has 49817 states and 70209 transitions. Word has length 230 [2022-12-14 08:14:09,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:14:09,073 INFO L495 AbstractCegarLoop]: Abstraction has 49817 states and 70209 transitions. [2022-12-14 08:14:09,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-12-14 08:14:09,073 INFO L276 IsEmpty]: Start isEmpty. Operand 49817 states and 70209 transitions. [2022-12-14 08:14:09,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-12-14 08:14:09,078 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:14:09,078 INFO L195 NwaCegarLoop]: trace histogram [18, 10, 10, 10, 10, 10, 10, 7, 7, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:14:09,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 08:14:09,079 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:14:09,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:14:09,079 INFO L85 PathProgramCache]: Analyzing trace with hash 102308232, now seen corresponding path program 1 times [2022-12-14 08:14:09,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:14:09,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607731208] [2022-12-14 08:14:09,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:14:09,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:14:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:14:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2022-12-14 08:14:09,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:14:09,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607731208] [2022-12-14 08:14:09,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607731208] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:14:09,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:14:09,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:14:09,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263712258] [2022-12-14 08:14:09,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:14:09,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:14:09,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:14:09,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:14:09,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:14:09,291 INFO L87 Difference]: Start difference. First operand 49817 states and 70209 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-12-14 08:14:12,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:14:16,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:14:16,785 INFO L93 Difference]: Finished difference Result 112200 states and 158032 transitions. [2022-12-14 08:14:16,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:14:16,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 246 [2022-12-14 08:14:16,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:14:16,971 INFO L225 Difference]: With dead ends: 112200 [2022-12-14 08:14:16,971 INFO L226 Difference]: Without dead ends: 62465 [2022-12-14 08:14:17,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:14:17,072 INFO L413 NwaCegarLoop]: 1951 mSDtfsCounter, 1023 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-14 08:14:17,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 3014 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 751 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-12-14 08:14:17,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62465 states. [2022-12-14 08:14:20,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62465 to 62377. [2022-12-14 08:14:20,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62377 states, 38924 states have (on average 1.2582725310862193) internal successors, (48977), 40284 states have internal predecessors, (48977), 17806 states have call successors, (17806), 5799 states have call predecessors, (17806), 5644 states have return successors, (20053), 16869 states have call predecessors, (20053), 17800 states have call successors, (20053) [2022-12-14 08:14:20,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62377 states to 62377 states and 86836 transitions. [2022-12-14 08:14:20,388 INFO L78 Accepts]: Start accepts. Automaton has 62377 states and 86836 transitions. Word has length 246 [2022-12-14 08:14:20,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:14:20,388 INFO L495 AbstractCegarLoop]: Abstraction has 62377 states and 86836 transitions. [2022-12-14 08:14:20,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-12-14 08:14:20,388 INFO L276 IsEmpty]: Start isEmpty. Operand 62377 states and 86836 transitions. [2022-12-14 08:14:20,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-12-14 08:14:20,391 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:14:20,392 INFO L195 NwaCegarLoop]: trace histogram [19, 10, 10, 10, 10, 10, 10, 7, 7, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:14:20,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 08:14:20,392 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:14:20,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:14:20,392 INFO L85 PathProgramCache]: Analyzing trace with hash 754425872, now seen corresponding path program 1 times [2022-12-14 08:14:20,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:14:20,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436744742] [2022-12-14 08:14:20,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:14:20,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:14:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:14:20,578 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2022-12-14 08:14:20,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:14:20,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436744742] [2022-12-14 08:14:20,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436744742] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:14:20,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:14:20,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:14:20,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297086062] [2022-12-14 08:14:20,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:14:20,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:14:20,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:14:20,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:14:20,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:14:20,581 INFO L87 Difference]: Start difference. First operand 62377 states and 86836 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2022-12-14 08:14:25,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:14:31,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:14:31,625 INFO L93 Difference]: Finished difference Result 147556 states and 204551 transitions. [2022-12-14 08:14:31,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:14:31,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) Word has length 278 [2022-12-14 08:14:31,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:14:31,902 INFO L225 Difference]: With dead ends: 147556 [2022-12-14 08:14:31,902 INFO L226 Difference]: Without dead ends: 85261 [2022-12-14 08:14:32,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:14:32,041 INFO L413 NwaCegarLoop]: 1950 mSDtfsCounter, 986 mSDsluCounter, 4961 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 6911 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-12-14 08:14:32,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 6911 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1566 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-12-14 08:14:32,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85261 states. [2022-12-14 08:14:35,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85261 to 73785. [2022-12-14 08:14:35,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73785 states, 45815 states have (on average 1.2565971843282768) internal successors, (57571), 47464 states have internal predecessors, (57571), 21155 states have call successors, (21155), 6958 states have call predecessors, (21155), 6812 states have return successors, (23477), 20060 states have call predecessors, (23477), 21149 states have call successors, (23477) [2022-12-14 08:14:35,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73785 states to 73785 states and 102203 transitions. [2022-12-14 08:14:35,938 INFO L78 Accepts]: Start accepts. Automaton has 73785 states and 102203 transitions. Word has length 278 [2022-12-14 08:14:35,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:14:35,938 INFO L495 AbstractCegarLoop]: Abstraction has 73785 states and 102203 transitions. [2022-12-14 08:14:35,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2022-12-14 08:14:35,939 INFO L276 IsEmpty]: Start isEmpty. Operand 73785 states and 102203 transitions. [2022-12-14 08:14:35,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-12-14 08:14:35,942 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:14:35,942 INFO L195 NwaCegarLoop]: trace histogram [19, 10, 10, 10, 10, 10, 10, 7, 7, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:14:35,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 08:14:35,942 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:14:35,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:14:35,943 INFO L85 PathProgramCache]: Analyzing trace with hash 599690414, now seen corresponding path program 1 times [2022-12-14 08:14:35,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:14:35,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418269349] [2022-12-14 08:14:35,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:14:35,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:14:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:14:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2022-12-14 08:14:36,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:14:36,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418269349] [2022-12-14 08:14:36,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418269349] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:14:36,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:14:36,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:14:36,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575734149] [2022-12-14 08:14:36,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:14:36,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:14:36,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:14:36,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:14:36,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:14:36,249 INFO L87 Difference]: Start difference. First operand 73785 states and 102203 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2022-12-14 08:14:40,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:14:47,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:14:47,212 INFO L93 Difference]: Finished difference Result 170444 states and 235393 transitions. [2022-12-14 08:14:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:14:47,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) Word has length 279 [2022-12-14 08:14:47,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:14:47,515 INFO L225 Difference]: With dead ends: 170444 [2022-12-14 08:14:47,515 INFO L226 Difference]: Without dead ends: 96741 [2022-12-14 08:14:47,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:14:47,680 INFO L413 NwaCegarLoop]: 1405 mSDtfsCounter, 1240 mSDsluCounter, 3697 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 5102 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-12-14 08:14:47,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 5102 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1101 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-12-14 08:14:47,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96741 states. [2022-12-14 08:14:51,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96741 to 85121. [2022-12-14 08:14:51,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85121 states, 52634 states have (on average 1.2557092373750807) internal successors, (66093), 54572 states have internal predecessors, (66093), 24504 states have call successors, (24504), 8117 states have call predecessors, (24504), 7980 states have return successors, (26901), 23251 states have call predecessors, (26901), 24498 states have call successors, (26901) [2022-12-14 08:14:52,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85121 states to 85121 states and 117498 transitions. [2022-12-14 08:14:52,194 INFO L78 Accepts]: Start accepts. Automaton has 85121 states and 117498 transitions. Word has length 279 [2022-12-14 08:14:52,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:14:52,195 INFO L495 AbstractCegarLoop]: Abstraction has 85121 states and 117498 transitions. [2022-12-14 08:14:52,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2022-12-14 08:14:52,195 INFO L276 IsEmpty]: Start isEmpty. Operand 85121 states and 117498 transitions. [2022-12-14 08:14:52,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-12-14 08:14:52,198 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:14:52,198 INFO L195 NwaCegarLoop]: trace histogram [19, 10, 10, 10, 10, 10, 10, 7, 7, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:14:52,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 08:14:52,199 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:14:52,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:14:52,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1143165868, now seen corresponding path program 1 times [2022-12-14 08:14:52,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:14:52,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685693845] [2022-12-14 08:14:52,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:14:52,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:14:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:14:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2022-12-14 08:14:52,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:14:52,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685693845] [2022-12-14 08:14:52,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685693845] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:14:52,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:14:52,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:14:52,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791540075] [2022-12-14 08:14:52,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:14:52,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:14:52,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:14:52,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:14:52,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:14:52,496 INFO L87 Difference]: Start difference. First operand 85121 states and 117498 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2022-12-14 08:14:56,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:15:03,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:15:03,815 INFO L93 Difference]: Finished difference Result 193260 states and 266199 transitions. [2022-12-14 08:15:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:15:03,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) Word has length 280 [2022-12-14 08:15:03,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:15:04,171 INFO L225 Difference]: With dead ends: 193260 [2022-12-14 08:15:04,171 INFO L226 Difference]: Without dead ends: 108221 [2022-12-14 08:15:04,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:15:04,357 INFO L413 NwaCegarLoop]: 1470 mSDtfsCounter, 1239 mSDsluCounter, 3827 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:15:04,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 5297 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1137 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-12-14 08:15:04,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108221 states. [2022-12-14 08:15:09,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108221 to 85121. [2022-12-14 08:15:09,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85121 states, 52634 states have (on average 1.2557092373750807) internal successors, (66093), 54572 states have internal predecessors, (66093), 24504 states have call successors, (24504), 8117 states have call predecessors, (24504), 7980 states have return successors, (26901), 23251 states have call predecessors, (26901), 24498 states have call successors, (26901) [2022-12-14 08:15:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85121 states to 85121 states and 117498 transitions. [2022-12-14 08:15:09,329 INFO L78 Accepts]: Start accepts. Automaton has 85121 states and 117498 transitions. Word has length 280 [2022-12-14 08:15:09,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:15:09,329 INFO L495 AbstractCegarLoop]: Abstraction has 85121 states and 117498 transitions. [2022-12-14 08:15:09,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2022-12-14 08:15:09,330 INFO L276 IsEmpty]: Start isEmpty. Operand 85121 states and 117498 transitions. [2022-12-14 08:15:09,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-12-14 08:15:09,333 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:15:09,334 INFO L195 NwaCegarLoop]: trace histogram [19, 10, 10, 10, 10, 10, 10, 7, 7, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:15:09,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 08:15:09,334 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)] === [2022-12-14 08:15:09,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:15:09,334 INFO L85 PathProgramCache]: Analyzing trace with hash -664550548, now seen corresponding path program 1 times [2022-12-14 08:15:09,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:15:09,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82430511] [2022-12-14 08:15:09,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:15:09,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:15:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:15:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2022-12-14 08:15:09,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:15:09,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82430511] [2022-12-14 08:15:09,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82430511] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:15:09,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:15:09,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:15:09,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115368101] [2022-12-14 08:15:09,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:15:09,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:15:09,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:15:09,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:15:09,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:15:09,627 INFO L87 Difference]: Start difference. First operand 85121 states and 117498 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2022-12-14 08:15:14,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:15:22,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:15:22,041 INFO L93 Difference]: Finished difference Result 193152 states and 266091 transitions. [2022-12-14 08:15:22,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:15:22,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) Word has length 281 [2022-12-14 08:15:22,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:15:22,398 INFO L225 Difference]: With dead ends: 193152 [2022-12-14 08:15:22,399 INFO L226 Difference]: Without dead ends: 108113 [2022-12-14 08:15:22,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:15:22,587 INFO L413 NwaCegarLoop]: 1406 mSDtfsCounter, 1239 mSDsluCounter, 3699 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 5105 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:15:22,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 5105 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1101 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-12-14 08:15:22,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108113 states. [2022-12-14 08:15:26,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108113 to 85013. [2022-12-14 08:15:27,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85013 states, 52562 states have (on average 1.2560595106731098) internal successors, (66021), 54500 states have internal predecessors, (66021), 24504 states have call successors, (24504), 8117 states have call predecessors, (24504), 7944 states have return successors, (26865), 23215 states have call predecessors, (26865), 24498 states have call successors, (26865) [2022-12-14 08:15:27,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85013 states to 85013 states and 117390 transitions. [2022-12-14 08:15:27,282 INFO L78 Accepts]: Start accepts. Automaton has 85013 states and 117390 transitions. Word has length 281 [2022-12-14 08:15:27,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:15:27,282 INFO L495 AbstractCegarLoop]: Abstraction has 85013 states and 117390 transitions. [2022-12-14 08:15:27,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2022-12-14 08:15:27,282 INFO L276 IsEmpty]: Start isEmpty. Operand 85013 states and 117390 transitions. [2022-12-14 08:15:27,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-12-14 08:15:27,288 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:15:27,288 INFO L195 NwaCegarLoop]: trace histogram [20, 10, 10, 10, 10, 10, 10, 7, 7, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 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] [2022-12-14 08:15:27,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 08:15:27,288 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)] === [2022-12-14 08:15:27,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:15:27,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1281175875, now seen corresponding path program 1 times [2022-12-14 08:15:27,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:15:27,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064185033] [2022-12-14 08:15:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:15:27,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:15:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:15:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2022-12-14 08:15:27,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:15:27,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064185033] [2022-12-14 08:15:27,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064185033] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:15:27,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:15:27,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:15:27,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391432231] [2022-12-14 08:15:27,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:15:27,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:15:27,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:15:27,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:15:27,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:15:27,529 INFO L87 Difference]: Start difference. First operand 85013 states and 117390 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 08:15:32,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:15:40,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:15:40,166 INFO L93 Difference]: Finished difference Result 195732 states and 269458 transitions. [2022-12-14 08:15:40,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:15:40,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) Word has length 295 [2022-12-14 08:15:40,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:15:40,637 INFO L225 Difference]: With dead ends: 195732 [2022-12-14 08:15:40,637 INFO L226 Difference]: Without dead ends: 110801 [2022-12-14 08:15:40,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:15:40,820 INFO L413 NwaCegarLoop]: 1983 mSDtfsCounter, 1047 mSDsluCounter, 5019 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 7002 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:15:40,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 7002 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1632 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-12-14 08:15:40,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110801 states. [2022-12-14 08:15:46,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110801 to 110641. [2022-12-14 08:15:46,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110641 states, 67634 states have (on average 1.243871425614336) internal successors, (84128), 70158 states have internal predecessors, (84128), 32236 states have call successors, (32236), 10968 states have call predecessors, (32236), 10768 states have return successors, (34789), 30582 states have call predecessors, (34789), 32230 states have call successors, (34789) [2022-12-14 08:15:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110641 states to 110641 states and 151153 transitions. [2022-12-14 08:15:46,589 INFO L78 Accepts]: Start accepts. Automaton has 110641 states and 151153 transitions. Word has length 295 [2022-12-14 08:15:46,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:15:46,590 INFO L495 AbstractCegarLoop]: Abstraction has 110641 states and 151153 transitions. [2022-12-14 08:15:46,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 08:15:46,590 INFO L276 IsEmpty]: Start isEmpty. Operand 110641 states and 151153 transitions. [2022-12-14 08:15:46,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-12-14 08:15:46,596 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:15:46,596 INFO L195 NwaCegarLoop]: trace histogram [20, 10, 10, 10, 10, 10, 10, 7, 7, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 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] [2022-12-14 08:15:46,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-14 08:15:46,596 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)] === [2022-12-14 08:15:46,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:15:46,596 INFO L85 PathProgramCache]: Analyzing trace with hash -163194437, now seen corresponding path program 1 times [2022-12-14 08:15:46,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:15:46,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450446977] [2022-12-14 08:15:46,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:15:46,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:15:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:15:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2022-12-14 08:15:46,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:15:46,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450446977] [2022-12-14 08:15:46,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450446977] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:15:46,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:15:46,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:15:46,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026505652] [2022-12-14 08:15:46,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:15:46,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:15:46,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:15:46,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:15:46,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:15:46,784 INFO L87 Difference]: Start difference. First operand 110641 states and 151153 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 08:15:51,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:16:00,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:16:00,174 INFO L93 Difference]: Finished difference Result 247096 states and 337200 transitions. [2022-12-14 08:16:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:16:00,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) Word has length 296 [2022-12-14 08:16:00,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:16:00,701 INFO L225 Difference]: With dead ends: 247096 [2022-12-14 08:16:00,701 INFO L226 Difference]: Without dead ends: 136537 [2022-12-14 08:16:00,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:16:00,937 INFO L413 NwaCegarLoop]: 1981 mSDtfsCounter, 1041 mSDsluCounter, 5021 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 7002 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-12-14 08:16:00,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 7002 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1644 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-12-14 08:16:01,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136537 states. [2022-12-14 08:16:07,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136537 to 136377. [2022-12-14 08:16:07,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136377 states, 82814 states have (on average 1.2358176153790421) internal successors, (102343), 85924 states have internal predecessors, (102343), 39968 states have call successors, (39968), 13819 states have call predecessors, (39968), 13592 states have return successors, (42713), 37949 states have call predecessors, (42713), 39962 states have call successors, (42713) [2022-12-14 08:16:08,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136377 states to 136377 states and 185024 transitions. [2022-12-14 08:16:08,314 INFO L78 Accepts]: Start accepts. Automaton has 136377 states and 185024 transitions. Word has length 296 [2022-12-14 08:16:08,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:16:08,314 INFO L495 AbstractCegarLoop]: Abstraction has 136377 states and 185024 transitions. [2022-12-14 08:16:08,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 08:16:08,314 INFO L276 IsEmpty]: Start isEmpty. Operand 136377 states and 185024 transitions. [2022-12-14 08:16:08,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-12-14 08:16:08,320 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:16:08,321 INFO L195 NwaCegarLoop]: trace histogram [20, 10, 10, 10, 10, 10, 10, 7, 7, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 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] [2022-12-14 08:16:08,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-14 08:16:08,321 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)] === [2022-12-14 08:16:08,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:16:08,321 INFO L85 PathProgramCache]: Analyzing trace with hash 825149819, now seen corresponding path program 1 times [2022-12-14 08:16:08,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:16:08,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416118301] [2022-12-14 08:16:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:16:08,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:16:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:16:08,636 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2022-12-14 08:16:08,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:16:08,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416118301] [2022-12-14 08:16:08,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416118301] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:16:08,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:16:08,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:16:08,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511207746] [2022-12-14 08:16:08,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:16:08,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:16:08,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:16:08,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:16:08,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:16:08,638 INFO L87 Difference]: Start difference. First operand 136377 states and 185024 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 08:16:14,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:16:22,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:16:22,849 INFO L93 Difference]: Finished difference Result 287304 states and 389791 transitions. [2022-12-14 08:16:22,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:16:22,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) Word has length 297 [2022-12-14 08:16:22,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:16:23,389 INFO L225 Difference]: With dead ends: 287304 [2022-12-14 08:16:23,390 INFO L226 Difference]: Without dead ends: 151009 [2022-12-14 08:16:23,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:16:23,763 INFO L413 NwaCegarLoop]: 1983 mSDtfsCounter, 1043 mSDsluCounter, 5025 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 7008 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-12-14 08:16:23,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 7008 Invalid, 1677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1650 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-12-14 08:16:23,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151009 states. [2022-12-14 08:16:31,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151009 to 150849. [2022-12-14 08:16:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150849 states, 91247 states have (on average 1.228621214944053) internal successors, (112108), 94654 states have internal predecessors, (112108), 44351 states have call successors, (44351), 15511 states have call predecessors, (44351), 15248 states have return successors, (47213), 42125 states have call predecessors, (47213), 44345 states have call successors, (47213) [2022-12-14 08:16:32,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150849 states to 150849 states and 203672 transitions. [2022-12-14 08:16:32,477 INFO L78 Accepts]: Start accepts. Automaton has 150849 states and 203672 transitions. Word has length 297 [2022-12-14 08:16:32,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:16:32,477 INFO L495 AbstractCegarLoop]: Abstraction has 150849 states and 203672 transitions. [2022-12-14 08:16:32,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 08:16:32,478 INFO L276 IsEmpty]: Start isEmpty. Operand 150849 states and 203672 transitions. [2022-12-14 08:16:32,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-12-14 08:16:32,486 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:16:32,486 INFO L195 NwaCegarLoop]: trace histogram [21, 10, 10, 10, 10, 10, 10, 7, 7, 6, 6, 6, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:16:32,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-14 08:16:32,487 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)] === [2022-12-14 08:16:32,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:16:32,487 INFO L85 PathProgramCache]: Analyzing trace with hash 2581854, now seen corresponding path program 1 times [2022-12-14 08:16:32,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:16:32,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804376477] [2022-12-14 08:16:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:16:32,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:16:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:16:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2022-12-14 08:16:32,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:16:32,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804376477] [2022-12-14 08:16:32,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804376477] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:16:32,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:16:32,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:16:32,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136370392] [2022-12-14 08:16:32,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:16:32,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:16:32,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:16:32,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:16:32,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:16:32,806 INFO L87 Difference]: Start difference. First operand 150849 states and 203672 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 08:16:39,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:16:49,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:16:49,953 INFO L93 Difference]: Finished difference Result 374646 states and 516022 transitions. [2022-12-14 08:16:49,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:16:49,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 319 [2022-12-14 08:16:49,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:16:50,772 INFO L225 Difference]: With dead ends: 374646 [2022-12-14 08:16:50,772 INFO L226 Difference]: Without dead ends: 223879 [2022-12-14 08:16:51,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:16:51,131 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 2007 mSDsluCounter, 2624 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 190 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2101 SdHoareTripleChecker+Valid, 4366 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:16:51,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2101 Valid, 4366 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1071 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-12-14 08:16:51,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223879 states. [2022-12-14 08:17:00,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223879 to 162077. [2022-12-14 08:17:00,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162077 states, 97994 states have (on average 1.2302589954487009) internal successors, (120558), 101690 states have internal predecessors, (120558), 47700 states have call successors, (47700), 16670 states have call predecessors, (47700), 16380 states have return successors, (50601), 45280 states have call predecessors, (50601), 47694 states have call successors, (50601) [2022-12-14 08:17:01,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162077 states to 162077 states and 218859 transitions. [2022-12-14 08:17:01,367 INFO L78 Accepts]: Start accepts. Automaton has 162077 states and 218859 transitions. Word has length 319 [2022-12-14 08:17:01,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:17:01,368 INFO L495 AbstractCegarLoop]: Abstraction has 162077 states and 218859 transitions. [2022-12-14 08:17:01,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 08:17:01,368 INFO L276 IsEmpty]: Start isEmpty. Operand 162077 states and 218859 transitions. [2022-12-14 08:17:01,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-12-14 08:17:01,379 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:17:01,379 INFO L195 NwaCegarLoop]: trace histogram [21, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:17:01,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-14 08:17:01,379 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)] === [2022-12-14 08:17:01,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:17:01,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1915199756, now seen corresponding path program 1 times [2022-12-14 08:17:01,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:17:01,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125876164] [2022-12-14 08:17:01,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:17:01,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:17:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:17:01,533 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-12-14 08:17:01,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:17:01,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125876164] [2022-12-14 08:17:01,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125876164] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:17:01,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:17:01,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:17:01,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097708280] [2022-12-14 08:17:01,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:17:01,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:17:01,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:17:01,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:17:01,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:17:01,535 INFO L87 Difference]: Start difference. First operand 162077 states and 218859 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 08:17:07,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:17:15,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:17:15,658 INFO L93 Difference]: Finished difference Result 344919 states and 466325 transitions. [2022-12-14 08:17:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:17:15,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 333 [2022-12-14 08:17:15,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:17:16,377 INFO L225 Difference]: With dead ends: 344919 [2022-12-14 08:17:16,377 INFO L226 Difference]: Without dead ends: 182924 [2022-12-14 08:17:16,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:17:16,738 INFO L413 NwaCegarLoop]: 1913 mSDtfsCounter, 1040 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-14 08:17:16,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 2974 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 737 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-12-14 08:17:16,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182924 states. [2022-12-14 08:17:26,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182924 to 182852. [2022-12-14 08:17:27,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182852 states, 110459 states have (on average 1.2283109570066721) internal successors, (135678), 114638 states have internal predecessors, (135678), 53955 states have call successors, (53955), 18776 states have call predecessors, (53955), 18435 states have return successors, (57012), 51199 states have call predecessors, (57012), 53949 states have call successors, (57012) [2022-12-14 08:17:27,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182852 states to 182852 states and 246645 transitions. [2022-12-14 08:17:27,711 INFO L78 Accepts]: Start accepts. Automaton has 182852 states and 246645 transitions. Word has length 333 [2022-12-14 08:17:27,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:17:27,711 INFO L495 AbstractCegarLoop]: Abstraction has 182852 states and 246645 transitions. [2022-12-14 08:17:27,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-14 08:17:27,712 INFO L276 IsEmpty]: Start isEmpty. Operand 182852 states and 246645 transitions. [2022-12-14 08:17:27,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-12-14 08:17:27,723 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:17:27,723 INFO L195 NwaCegarLoop]: trace histogram [22, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 6, 6, 6, 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] [2022-12-14 08:17:27,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-14 08:17:27,723 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)] === [2022-12-14 08:17:27,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:17:27,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2010888339, now seen corresponding path program 1 times [2022-12-14 08:17:27,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:17:27,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586304155] [2022-12-14 08:17:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:17:27,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:17:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:17:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2022-12-14 08:17:28,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:17:28,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586304155] [2022-12-14 08:17:28,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586304155] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:17:28,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:17:28,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:17:28,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160917754] [2022-12-14 08:17:28,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:17:28,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:17:28,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:17:28,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:17:28,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:17:28,076 INFO L87 Difference]: Start difference. First operand 182852 states and 246645 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-12-14 08:17:35,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:17:48,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:17:48,070 INFO L93 Difference]: Finished difference Result 441850 states and 605557 transitions. [2022-12-14 08:17:48,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:17:48,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 335 [2022-12-14 08:17:48,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:17:49,231 INFO L225 Difference]: With dead ends: 441850 [2022-12-14 08:17:49,231 INFO L226 Difference]: Without dead ends: 259080 [2022-12-14 08:17:49,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:17:49,814 INFO L413 NwaCegarLoop]: 2196 mSDtfsCounter, 1380 mSDsluCounter, 3207 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 200 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 5403 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:17:49,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 5403 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1379 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-12-14 08:17:50,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259080 states. [2022-12-14 08:18:02,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259080 to 207940. [2022-12-14 08:18:02,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207940 states, 125027 states have (on average 1.2259831876314715) internal successors, (153281), 129792 states have internal predecessors, (153281), 61687 states have call successors, (61687), 21627 states have call predecessors, (61687), 21223 states have return successors, (64900), 58530 states have call predecessors, (64900), 61681 states have call successors, (64900) [2022-12-14 08:18:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207940 states to 207940 states and 279868 transitions. [2022-12-14 08:18:03,157 INFO L78 Accepts]: Start accepts. Automaton has 207940 states and 279868 transitions. Word has length 335 [2022-12-14 08:18:03,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:03,157 INFO L495 AbstractCegarLoop]: Abstraction has 207940 states and 279868 transitions. [2022-12-14 08:18:03,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-12-14 08:18:03,157 INFO L276 IsEmpty]: Start isEmpty. Operand 207940 states and 279868 transitions. [2022-12-14 08:18:03,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-12-14 08:18:03,170 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:03,170 INFO L195 NwaCegarLoop]: trace histogram [24, 14, 14, 14, 14, 14, 14, 12, 12, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:03,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-14 08:18:03,170 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)] === [2022-12-14 08:18:03,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:03,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1643665390, now seen corresponding path program 1 times [2022-12-14 08:18:03,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:03,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206314886] [2022-12-14 08:18:03,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:03,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1338 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2022-12-14 08:18:03,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:03,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206314886] [2022-12-14 08:18:03,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206314886] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:03,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:18:03,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:18:03,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138588087] [2022-12-14 08:18:03,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:03,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:18:03,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:03,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:18:03,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:18:03,829 INFO L87 Difference]: Start difference. First operand 207940 states and 279868 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-12-14 08:18:10,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:18:21,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:21,182 INFO L93 Difference]: Finished difference Result 208046 states and 279972 transitions. [2022-12-14 08:18:21,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:18:21,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 356 [2022-12-14 08:18:21,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:21,932 INFO L225 Difference]: With dead ends: 208046 [2022-12-14 08:18:21,932 INFO L226 Difference]: Without dead ends: 208044 [2022-12-14 08:18:22,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:18:22,010 INFO L413 NwaCegarLoop]: 1385 mSDtfsCounter, 1044 mSDsluCounter, 3852 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 5237 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:22,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 5237 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1028 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-12-14 08:18:22,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208044 states. [2022-12-14 08:18:35,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208044 to 207940. [2022-12-14 08:18:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207940 states, 125027 states have (on average 1.2243515400673455) internal successors, (153077), 129792 states have internal predecessors, (153077), 61687 states have call successors, (61687), 21627 states have call predecessors, (61687), 21223 states have return successors, (64900), 58530 states have call predecessors, (64900), 61681 states have call successors, (64900) [2022-12-14 08:18:36,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207940 states to 207940 states and 279664 transitions. [2022-12-14 08:18:36,625 INFO L78 Accepts]: Start accepts. Automaton has 207940 states and 279664 transitions. Word has length 356 [2022-12-14 08:18:36,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:36,626 INFO L495 AbstractCegarLoop]: Abstraction has 207940 states and 279664 transitions. [2022-12-14 08:18:36,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-12-14 08:18:36,626 INFO L276 IsEmpty]: Start isEmpty. Operand 207940 states and 279664 transitions. [2022-12-14 08:18:36,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-12-14 08:18:36,648 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:36,648 INFO L195 NwaCegarLoop]: trace histogram [24, 14, 14, 14, 14, 14, 14, 13, 13, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:36,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-14 08:18:36,649 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:18:36,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:36,649 INFO L85 PathProgramCache]: Analyzing trace with hash 2020088744, now seen corresponding path program 1 times [2022-12-14 08:18:36,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:36,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518754079] [2022-12-14 08:18:36,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:36,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1376 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1376 trivial. 0 not checked. [2022-12-14 08:18:37,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:37,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518754079] [2022-12-14 08:18:37,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518754079] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:37,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:18:37,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:18:37,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298639409] [2022-12-14 08:18:37,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:37,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:18:37,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:37,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:18:37,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:18:37,193 INFO L87 Difference]: Start difference. First operand 207940 states and 279664 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-12-14 08:18:43,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:18:54,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:54,559 INFO L93 Difference]: Finished difference Result 210276 states and 281702 transitions. [2022-12-14 08:18:54,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:18:54,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 386 [2022-12-14 08:18:54,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:55,412 INFO L225 Difference]: With dead ends: 210276 [2022-12-14 08:18:55,412 INFO L226 Difference]: Without dead ends: 210274 [2022-12-14 08:18:55,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:18:55,507 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 217 mSDsluCounter, 3261 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 4410 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:55,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 4410 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1020 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-12-14 08:18:55,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210274 states. [2022-12-14 08:19:07,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210274 to 210274. [2022-12-14 08:19:07,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210274 states, 126260 states have (on average 1.221020117218438) internal successors, (154166), 131084 states have internal predecessors, (154166), 62059 states have call successors, (62059), 22357 states have call predecessors, (62059), 21953 states have return successors, (65272), 58902 states have call predecessors, (65272), 62053 states have call successors, (65272) [2022-12-14 08:19:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210274 states to 210274 states and 281497 transitions. [2022-12-14 08:19:08,642 INFO L78 Accepts]: Start accepts. Automaton has 210274 states and 281497 transitions. Word has length 386 [2022-12-14 08:19:08,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:19:08,642 INFO L495 AbstractCegarLoop]: Abstraction has 210274 states and 281497 transitions. [2022-12-14 08:19:08,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-12-14 08:19:08,643 INFO L276 IsEmpty]: Start isEmpty. Operand 210274 states and 281497 transitions. [2022-12-14 08:19:08,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2022-12-14 08:19:08,803 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:19:08,803 INFO L195 NwaCegarLoop]: trace histogram [31, 28, 15, 15, 15, 15, 15, 15, 15, 15, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:19:08,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-14 08:19:08,803 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:19:08,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:19:08,804 INFO L85 PathProgramCache]: Analyzing trace with hash 2106466215, now seen corresponding path program 1 times [2022-12-14 08:19:08,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:19:08,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056857143] [2022-12-14 08:19:08,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:19:08,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:19:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:19:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2749 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2724 trivial. 0 not checked. [2022-12-14 08:19:13,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:19:13,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056857143] [2022-12-14 08:19:13,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056857143] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:19:13,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:19:13,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:19:13,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605743865] [2022-12-14 08:19:13,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:19:13,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:19:13,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:19:13,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:19:13,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:19:13,688 INFO L87 Difference]: Start difference. First operand 210274 states and 281497 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2022-12-14 08:19:19,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:19:31,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:19:31,573 INFO L93 Difference]: Finished difference Result 425974 states and 573448 transitions. [2022-12-14 08:19:31,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:19:31,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 610 [2022-12-14 08:19:31,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:19:32,651 INFO L225 Difference]: With dead ends: 425974 [2022-12-14 08:19:32,651 INFO L226 Difference]: Without dead ends: 215782 [2022-12-14 08:19:33,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:19:33,123 INFO L413 NwaCegarLoop]: 1144 mSDtfsCounter, 41 mSDsluCounter, 2224 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:19:33,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3368 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 764 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-12-14 08:19:33,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215782 states. [2022-12-14 08:19:45,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215782 to 213514. [2022-12-14 08:19:45,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213514 states, 128528 states have (on average 1.2171200049794597) internal successors, (156434), 133676 states have internal predecessors, (156434), 62707 states have call successors, (62707), 22357 states have call predecessors, (62707), 22277 states have return successors, (66268), 59550 states have call predecessors, (66268), 62701 states have call successors, (66268) [2022-12-14 08:19:46,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213514 states to 213514 states and 285409 transitions. [2022-12-14 08:19:46,247 INFO L78 Accepts]: Start accepts. Automaton has 213514 states and 285409 transitions. Word has length 610 [2022-12-14 08:19:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:19:46,248 INFO L495 AbstractCegarLoop]: Abstraction has 213514 states and 285409 transitions. [2022-12-14 08:19:46,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2022-12-14 08:19:46,248 INFO L276 IsEmpty]: Start isEmpty. Operand 213514 states and 285409 transitions. [2022-12-14 08:19:46,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2022-12-14 08:19:46,411 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:19:46,411 INFO L195 NwaCegarLoop]: trace histogram [31, 27, 16, 16, 14, 14, 14, 14, 14, 14, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:19:46,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-14 08:19:46,412 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:19:46,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:19:46,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1361723077, now seen corresponding path program 1 times [2022-12-14 08:19:46,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:19:46,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133793117] [2022-12-14 08:19:46,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:19:46,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:19:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:19:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2656 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 2628 trivial. 0 not checked. [2022-12-14 08:19:49,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:19:49,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133793117] [2022-12-14 08:19:49,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133793117] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:19:49,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:19:49,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:19:49,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881374012] [2022-12-14 08:19:49,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:19:49,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:19:49,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:19:49,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:19:49,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:19:49,460 INFO L87 Difference]: Start difference. First operand 213514 states and 285409 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2022-12-14 08:19:56,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:20:10,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:10,930 INFO L93 Difference]: Finished difference Result 520841 states and 697103 transitions. [2022-12-14 08:20:10,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:20:10,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) Word has length 625 [2022-12-14 08:20:10,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:12,165 INFO L225 Difference]: With dead ends: 520841 [2022-12-14 08:20:12,165 INFO L226 Difference]: Without dead ends: 307409 [2022-12-14 08:20:12,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:20:12,668 INFO L413 NwaCegarLoop]: 2012 mSDtfsCounter, 1077 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:12,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 3134 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 714 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-12-14 08:20:13,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307409 states. [2022-12-14 08:20:30,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307409 to 306911. [2022-12-14 08:20:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306911 states, 185512 states have (on average 1.2171988874035102) internal successors, (225805), 192881 states have internal predecessors, (225805), 89193 states have call successors, (89193), 32359 states have call predecessors, (89193), 32204 states have return successors, (95436), 84304 states have call predecessors, (95436), 89187 states have call successors, (95436) [2022-12-14 08:20:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306911 states to 306911 states and 410434 transitions. [2022-12-14 08:20:31,788 INFO L78 Accepts]: Start accepts. Automaton has 306911 states and 410434 transitions. Word has length 625 [2022-12-14 08:20:31,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:31,788 INFO L495 AbstractCegarLoop]: Abstraction has 306911 states and 410434 transitions. [2022-12-14 08:20:31,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2022-12-14 08:20:31,789 INFO L276 IsEmpty]: Start isEmpty. Operand 306911 states and 410434 transitions. [2022-12-14 08:20:32,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2022-12-14 08:20:32,210 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:32,210 INFO L195 NwaCegarLoop]: trace histogram [31, 29, 16, 16, 14, 14, 14, 14, 14, 14, 6, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:32,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-14 08:20:32,211 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:20:32,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:32,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1683074301, now seen corresponding path program 1 times [2022-12-14 08:20:32,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:32,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119301964] [2022-12-14 08:20:32,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:32,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 2752 trivial. 0 not checked. [2022-12-14 08:20:36,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:36,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119301964] [2022-12-14 08:20:36,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119301964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:20:36,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:20:36,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:20:36,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367172901] [2022-12-14 08:20:36,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:20:36,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:20:36,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:20:36,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:20:36,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:20:36,994 INFO L87 Difference]: Start difference. First operand 306911 states and 410434 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 3 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (104), 4 states have call predecessors, (104), 3 states have call successors, (104) [2022-12-14 08:20:44,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:21:07,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:21:07,435 INFO L93 Difference]: Finished difference Result 704665 states and 941213 transitions. [2022-12-14 08:21:07,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:21:07,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 3 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (104), 4 states have call predecessors, (104), 3 states have call successors, (104) Word has length 647 [2022-12-14 08:21:07,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:21:09,120 INFO L225 Difference]: With dead ends: 704665 [2022-12-14 08:21:09,120 INFO L226 Difference]: Without dead ends: 397836 [2022-12-14 08:21:09,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:21:09,939 INFO L413 NwaCegarLoop]: 1987 mSDtfsCounter, 1045 mSDsluCounter, 5096 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 7083 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:21:09,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 7083 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1591 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-12-14 08:21:10,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397836 states. [2022-12-14 08:21:33,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397836 to 396942. [2022-12-14 08:21:33,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396942 states, 239328 states have (on average 1.2101885278780586) internal successors, (289632), 248918 states have internal predecessors, (289632), 115481 states have call successors, (115481), 42163 states have call predecessors, (115481), 42131 states have return successors, (124604), 109058 states have call predecessors, (124604), 115475 states have call successors, (124604) [2022-12-14 08:21:34,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396942 states to 396942 states and 529717 transitions. [2022-12-14 08:21:35,047 INFO L78 Accepts]: Start accepts. Automaton has 396942 states and 529717 transitions. Word has length 647 [2022-12-14 08:21:35,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:21:35,047 INFO L495 AbstractCegarLoop]: Abstraction has 396942 states and 529717 transitions. [2022-12-14 08:21:35,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 3 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (104), 4 states have call predecessors, (104), 3 states have call successors, (104) [2022-12-14 08:21:35,048 INFO L276 IsEmpty]: Start isEmpty. Operand 396942 states and 529717 transitions. [2022-12-14 08:21:35,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2022-12-14 08:21:35,283 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:21:35,283 INFO L195 NwaCegarLoop]: trace histogram [31, 29, 16, 16, 14, 14, 14, 14, 14, 14, 6, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:21:35,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-14 08:21:35,283 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 08:21:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:21:35,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1308465488, now seen corresponding path program 1 times [2022-12-14 08:21:35,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:21:35,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181787325] [2022-12-14 08:21:35,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:21:35,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:21:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:21:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 2752 trivial. 0 not checked. [2022-12-14 08:21:40,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:21:40,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181787325] [2022-12-14 08:21:40,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181787325] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:21:40,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:21:40,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:21:40,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146996882] [2022-12-14 08:21:40,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:21:40,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:21:40,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:21:40,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:21:40,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:21:40,586 INFO L87 Difference]: Start difference. First operand 396942 states and 529717 transitions. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 4 states have internal predecessors, (210), 3 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (104), 4 states have call predecessors, (104), 3 states have call successors, (104) [2022-12-14 08:21:48,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:22:15,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:22:15,762 INFO L93 Difference]: Finished difference Result 885123 states and 1180571 transitions. [2022-12-14 08:22:15,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:22:15,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 4 states have internal predecessors, (210), 3 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (104), 4 states have call predecessors, (104), 3 states have call successors, (104) Word has length 648 [2022-12-14 08:22:15,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:22:17,962 INFO L225 Difference]: With dead ends: 885123 [2022-12-14 08:22:17,962 INFO L226 Difference]: Without dead ends: 488263 [2022-12-14 08:22:19,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:22:19,133 INFO L413 NwaCegarLoop]: 1992 mSDtfsCounter, 1054 mSDsluCounter, 5098 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 7090 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:22:19,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 7090 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1594 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-12-14 08:22:19,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488263 states.