./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-mutex_drivers-media-radio-wl128x-fm_drv.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/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_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/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_fa70013a-f2d0-4888-bd5a-a4041228781c/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 f6012e8ec841b08462bbd246c354a43139de7ccb42d1c6282a50e12dbc313f31 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 06:38:38,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:38:38,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:38:38,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:38:38,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:38:38,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:38:38,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:38:38,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:38:38,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:38:38,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:38:38,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:38:38,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:38:38,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:38:38,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:38:38,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:38:38,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:38:38,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:38:38,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:38:38,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:38:38,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:38:38,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:38:38,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:38:38,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:38:38,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:38:38,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:38:38,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:38:38,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:38:38,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:38:38,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:38:38,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:38:38,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:38:38,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:38:38,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:38:38,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:38:38,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:38:38,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:38:38,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:38:38,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:38:38,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:38:38,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:38:38,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:38:38,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 06:38:38,206 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:38:38,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:38:38,207 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:38:38,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:38:38,208 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:38:38,208 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:38:38,208 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:38:38,208 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:38:38,208 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:38:38,208 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:38:38,209 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:38:38,209 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:38:38,209 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:38:38,209 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:38:38,209 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:38:38,209 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:38:38,209 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:38:38,210 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:38:38,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:38:38,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:38:38,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:38:38,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:38:38,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:38:38,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:38:38,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:38:38,211 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:38:38,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:38:38,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:38:38,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:38:38,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:38:38,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:38:38,212 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:38:38,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:38:38,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:38:38,213 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:38:38,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:38:38,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:38:38,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:38:38,213 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_fa70013a-f2d0-4888-bd5a-a4041228781c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6012e8ec841b08462bbd246c354a43139de7ccb42d1c6282a50e12dbc313f31 [2022-12-14 06:38:38,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:38:38,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:38:38,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:38:38,448 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:38:38,448 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:38:38,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2022-12-14 06:38:41,124 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:38:41,492 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:38:41,493 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2022-12-14 06:38:41,541 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/data/5a1ec89f9/99855f4a437b4a24b4b1935f70b0d11c/FLAG926425886 [2022-12-14 06:38:41,554 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/data/5a1ec89f9/99855f4a437b4a24b4b1935f70b0d11c [2022-12-14 06:38:41,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:38:41,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:38:41,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:38:41,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:38:41,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:38:41,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:38:41" (1/1) ... [2022-12-14 06:38:41,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1404ebda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:41, skipping insertion in model container [2022-12-14 06:38:41,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:38:41" (1/1) ... [2022-12-14 06:38:41,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:38:41,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:38:42,147 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-14 06:38:42,173 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-12-14 06:38:42,236 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 06:38:42,237 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 06:38:42,238 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 06:38:42,238 WARN L623 FunctionHandler]: Unknown extern function __copy_to_user_overflow [2022-12-14 06:38:42,279 WARN L623 FunctionHandler]: Unknown extern function __alloc_skb [2022-12-14 06:38:42,294 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 06:38:42,333 WARN L623 FunctionHandler]: Unknown extern function __tasklet_schedule [2022-12-14 06:38:42,545 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,546 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-14 06:38:42,548 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,549 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-14 06:38:42,550 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 06:38:42,551 WARN L623 FunctionHandler]: Unknown extern function complete [2022-12-14 06:38:42,552 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,552 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 06:38:42,553 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-14 06:38:42,554 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,555 WARN L623 FunctionHandler]: Unknown extern function skb_dequeue [2022-12-14 06:38:42,561 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,562 WARN L623 FunctionHandler]: Unknown extern function skb_dequeue [2022-12-14 06:38:42,563 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,564 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-14 06:38:42,565 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,569 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,570 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,571 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,572 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 06:38:42,574 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 06:38:42,575 WARN L623 FunctionHandler]: Unknown extern function skb_queue_tail [2022-12-14 06:38:42,576 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion_timeout [2022-12-14 06:38:42,577 WARN L623 FunctionHandler]: Unknown extern function jiffies_to_msecs [2022-12-14 06:38:42,577 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,578 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,579 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 06:38:42,580 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,580 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-14 06:38:42,581 WARN L623 FunctionHandler]: Unknown extern function skb_pull [2022-12-14 06:38:42,583 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-14 06:38:42,588 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 06:38:42,590 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,601 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,603 WARN L623 FunctionHandler]: Unknown extern function skb_pull [2022-12-14 06:38:42,605 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,620 WARN L623 FunctionHandler]: Unknown extern function skb_pull [2022-12-14 06:38:42,626 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 06:38:42,630 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-12-14 06:38:42,632 WARN L623 FunctionHandler]: Unknown extern function complete [2022-12-14 06:38:42,633 WARN L623 FunctionHandler]: Unknown extern function complete [2022-12-14 06:38:42,643 WARN L623 FunctionHandler]: Unknown extern function skb_pull [2022-12-14 06:38:42,652 WARN L623 FunctionHandler]: Unknown extern function prepare_to_wait_event [2022-12-14 06:38:42,652 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-12-14 06:38:42,653 WARN L623 FunctionHandler]: Unknown extern function finish_wait [2022-12-14 06:38:42,653 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 06:38:42,658 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,659 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,667 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,672 WARN L623 FunctionHandler]: Unknown extern function request_firmware [2022-12-14 06:38:42,673 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,674 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,676 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:38:42,677 WARN L623 FunctionHandler]: Unknown extern function release_firmware [2022-12-14 06:38:42,687 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,688 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,688 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 06:38:42,689 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:38:42,692 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:38:42,694 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,695 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,696 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,696 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 06:38:42,697 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,698 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,699 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,699 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,704 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,705 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,705 WARN L623 FunctionHandler]: Unknown extern function skb_push [2022-12-14 06:38:42,706 WARN L623 FunctionHandler]: Unknown extern function skb_queue_tail [2022-12-14 06:38:42,709 WARN L623 FunctionHandler]: Unknown extern function complete [2022-12-14 06:38:42,711 WARN L623 FunctionHandler]: Unknown extern function st_register [2022-12-14 06:38:42,712 WARN L623 FunctionHandler]: Unknown extern function msecs_to_jiffies [2022-12-14 06:38:42,712 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion_timeout [2022-12-14 06:38:42,712 WARN L623 FunctionHandler]: Unknown extern function msecs_to_jiffies [2022-12-14 06:38:42,712 WARN L623 FunctionHandler]: Unknown extern function jiffies_to_msecs [2022-12-14 06:38:42,713 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,713 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,714 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,715 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,715 WARN L623 FunctionHandler]: Unknown extern function st_unregister [2022-12-14 06:38:42,716 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,716 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 06:38:42,717 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 06:38:42,717 WARN L623 FunctionHandler]: Unknown extern function tasklet_init [2022-12-14 06:38:42,718 WARN L623 FunctionHandler]: Unknown extern function tasklet_init [2022-12-14 06:38:42,718 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-14 06:38:42,719 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-12-14 06:38:42,721 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-12-14 06:38:42,721 WARN L623 FunctionHandler]: Unknown extern function tasklet_kill [2022-12-14 06:38:42,721 WARN L623 FunctionHandler]: Unknown extern function tasklet_kill [2022-12-14 06:38:42,722 WARN L623 FunctionHandler]: Unknown extern function skb_queue_purge [2022-12-14 06:38:42,722 WARN L623 FunctionHandler]: Unknown extern function skb_queue_purge [2022-12-14 06:38:42,722 WARN L623 FunctionHandler]: Unknown extern function st_unregister [2022-12-14 06:38:42,723 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,728 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,729 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,730 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 06:38:42,730 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 06:38:42,735 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 06:38:42,735 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 06:38:42,876 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 06:38:42,876 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 06:38:42,877 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 06:38:42,878 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-12-14 06:38:42,878 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 06:38:42,930 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,933 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion_timeout [2022-12-14 06:38:42,933 WARN L623 FunctionHandler]: Unknown extern function jiffies_to_msecs [2022-12-14 06:38:42,934 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,944 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,951 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,955 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion_timeout [2022-12-14 06:38:42,956 WARN L623 FunctionHandler]: Unknown extern function jiffies_to_msecs [2022-12-14 06:38:42,956 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,959 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,961 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,962 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,963 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,965 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,972 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,973 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,974 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,976 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,977 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,978 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,979 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,981 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,982 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,983 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,987 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,988 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,989 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,990 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:42,992 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,036 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,047 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion_timeout [2022-12-14 06:38:43,047 WARN L623 FunctionHandler]: Unknown extern function jiffies_to_msecs [2022-12-14 06:38:43,047 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,128 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 06:38:43,128 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 06:38:43,129 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 06:38:43,129 WARN L623 FunctionHandler]: Unknown extern function __copy_from_user_overflow [2022-12-14 06:38:43,147 WARN L623 FunctionHandler]: Unknown extern function __video_register_device [2022-12-14 06:38:43,174 WARN L623 FunctionHandler]: Unknown extern function video_devdata [2022-12-14 06:38:43,196 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,197 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,197 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,209 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,209 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,210 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,214 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,215 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,219 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 06:38:43,219 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 06:38:43,220 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:38:43,225 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,251 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,251 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,252 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,256 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,265 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,266 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,275 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,276 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,277 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,282 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 06:38:43,283 WARN L623 FunctionHandler]: Unknown extern function v4l2_device_register [2022-12-14 06:38:43,283 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-12-14 06:38:43,283 WARN L623 FunctionHandler]: Unknown extern function video_device_alloc [2022-12-14 06:38:43,284 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,285 WARN L623 FunctionHandler]: Unknown extern function video_device_release [2022-12-14 06:38:43,285 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,285 WARN L623 FunctionHandler]: Unknown extern function v4l2_ctrl_handler_init_class [2022-12-14 06:38:43,286 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,286 WARN L623 FunctionHandler]: Unknown extern function v4l2_ctrl_handler_free [2022-12-14 06:38:43,286 WARN L623 FunctionHandler]: Unknown extern function v4l2_ctrl_new_std [2022-12-14 06:38:43,287 WARN L623 FunctionHandler]: Unknown extern function v4l2_ctrl_new_std [2022-12-14 06:38:43,287 WARN L623 FunctionHandler]: Unknown extern function v4l2_ctrl_new_std_menu [2022-12-14 06:38:43,287 WARN L623 FunctionHandler]: Unknown extern function v4l2_ctrl_new_std [2022-12-14 06:38:43,287 WARN L623 FunctionHandler]: Unknown extern function v4l2_ctrl_new_std [2022-12-14 06:38:43,288 WARN L623 FunctionHandler]: Unknown extern function v4l2_ctrl_handler_free [2022-12-14 06:38:43,289 WARN L623 FunctionHandler]: Unknown extern function video_unregister_device [2022-12-14 06:38:43,289 WARN L623 FunctionHandler]: Unknown extern function v4l2_device_unregister [2022-12-14 06:38:43,356 WARN L623 FunctionHandler]: Unknown extern function video_ioctl2 [2022-12-14 06:38:43,358 WARN L623 FunctionHandler]: Unknown extern function video_device_release [2022-12-14 06:38:43,402 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-14 06:38:43,403 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-14 06:38:43,409 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-14 06:38:43,601 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_fa70013a-f2d0-4888-bd5a-a4041228781c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314540,314553] [2022-12-14 06:38:43,604 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_fa70013a-f2d0-4888-bd5a-a4041228781c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314706,314719] [2022-12-14 06:38:43,605 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_fa70013a-f2d0-4888-bd5a-a4041228781c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314870,314883] [2022-12-14 06:38:43,605 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_fa70013a-f2d0-4888-bd5a-a4041228781c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[315035,315048] [2022-12-14 06:38:43,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:38:43,657 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:38:43,763 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-14 06:38:43,764 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-12-14 06:38:43,765 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 06:38:43,765 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 06:38:43,766 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 06:38:43,766 WARN L623 FunctionHandler]: Unknown extern function __copy_to_user_overflow [2022-12-14 06:38:43,766 WARN L623 FunctionHandler]: Unknown extern function __alloc_skb [2022-12-14 06:38:43,768 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 06:38:43,769 WARN L623 FunctionHandler]: Unknown extern function __tasklet_schedule [2022-12-14 06:38:43,778 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,778 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-14 06:38:43,779 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,782 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-14 06:38:43,783 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 06:38:43,783 WARN L623 FunctionHandler]: Unknown extern function complete [2022-12-14 06:38:43,784 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,784 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 06:38:43,788 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-14 06:38:43,788 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,788 WARN L623 FunctionHandler]: Unknown extern function skb_dequeue [2022-12-14 06:38:43,790 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,790 WARN L623 FunctionHandler]: Unknown extern function skb_dequeue [2022-12-14 06:38:43,791 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,791 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-14 06:38:43,791 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,792 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,793 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,794 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,794 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 06:38:43,795 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-12-14 06:38:43,796 WARN L623 FunctionHandler]: Unknown extern function skb_queue_tail [2022-12-14 06:38:43,797 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion_timeout [2022-12-14 06:38:43,797 WARN L623 FunctionHandler]: Unknown extern function jiffies_to_msecs [2022-12-14 06:38:43,797 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,798 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,798 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 06:38:43,799 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,799 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-14 06:38:43,800 WARN L623 FunctionHandler]: Unknown extern function skb_pull [2022-12-14 06:38:43,800 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-14 06:38:43,801 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 06:38:43,801 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,802 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,803 WARN L623 FunctionHandler]: Unknown extern function skb_pull [2022-12-14 06:38:43,804 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,808 WARN L623 FunctionHandler]: Unknown extern function skb_pull [2022-12-14 06:38:43,810 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 06:38:43,812 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-12-14 06:38:43,813 WARN L623 FunctionHandler]: Unknown extern function complete [2022-12-14 06:38:43,813 WARN L623 FunctionHandler]: Unknown extern function complete [2022-12-14 06:38:43,818 WARN L623 FunctionHandler]: Unknown extern function skb_pull [2022-12-14 06:38:43,826 WARN L623 FunctionHandler]: Unknown extern function prepare_to_wait_event [2022-12-14 06:38:43,826 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-12-14 06:38:43,826 WARN L623 FunctionHandler]: Unknown extern function finish_wait [2022-12-14 06:38:43,827 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 06:38:43,828 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,829 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,831 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,832 WARN L623 FunctionHandler]: Unknown extern function request_firmware [2022-12-14 06:38:43,832 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,833 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,834 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 06:38:43,835 WARN L623 FunctionHandler]: Unknown extern function release_firmware [2022-12-14 06:38:43,836 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,836 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,837 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 06:38:43,837 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:38:43,838 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:38:43,839 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,840 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,840 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,841 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-12-14 06:38:43,841 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,841 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,842 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,842 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,843 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,843 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,843 WARN L623 FunctionHandler]: Unknown extern function skb_push [2022-12-14 06:38:43,844 WARN L623 FunctionHandler]: Unknown extern function skb_queue_tail [2022-12-14 06:38:43,844 WARN L623 FunctionHandler]: Unknown extern function complete [2022-12-14 06:38:43,846 WARN L623 FunctionHandler]: Unknown extern function st_register [2022-12-14 06:38:43,846 WARN L623 FunctionHandler]: Unknown extern function msecs_to_jiffies [2022-12-14 06:38:43,846 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion_timeout [2022-12-14 06:38:43,847 WARN L623 FunctionHandler]: Unknown extern function msecs_to_jiffies [2022-12-14 06:38:43,847 WARN L623 FunctionHandler]: Unknown extern function jiffies_to_msecs [2022-12-14 06:38:43,847 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,847 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,848 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,848 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,848 WARN L623 FunctionHandler]: Unknown extern function st_unregister [2022-12-14 06:38:43,849 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,849 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 06:38:43,849 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-14 06:38:43,849 WARN L623 FunctionHandler]: Unknown extern function tasklet_init [2022-12-14 06:38:43,849 WARN L623 FunctionHandler]: Unknown extern function tasklet_init [2022-12-14 06:38:43,850 WARN L623 FunctionHandler]: Unknown extern function init_timer_key [2022-12-14 06:38:43,851 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-12-14 06:38:43,852 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-12-14 06:38:43,852 WARN L623 FunctionHandler]: Unknown extern function tasklet_kill [2022-12-14 06:38:43,852 WARN L623 FunctionHandler]: Unknown extern function tasklet_kill [2022-12-14 06:38:43,852 WARN L623 FunctionHandler]: Unknown extern function skb_queue_purge [2022-12-14 06:38:43,852 WARN L623 FunctionHandler]: Unknown extern function skb_queue_purge [2022-12-14 06:38:43,852 WARN L623 FunctionHandler]: Unknown extern function st_unregister [2022-12-14 06:38:43,853 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,853 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,854 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,856 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 06:38:43,857 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 06:38:43,857 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 06:38:43,857 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 06:38:43,868 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_interrupt_context [2022-12-14 06:38:43,868 WARN L623 FunctionHandler]: Unknown extern function ldv_switch_to_process_context [2022-12-14 06:38:43,869 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 06:38:43,869 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-12-14 06:38:43,869 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-12-14 06:38:43,871 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,872 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion_timeout [2022-12-14 06:38:43,872 WARN L623 FunctionHandler]: Unknown extern function jiffies_to_msecs [2022-12-14 06:38:43,872 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,873 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,874 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,876 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion_timeout [2022-12-14 06:38:43,876 WARN L623 FunctionHandler]: Unknown extern function jiffies_to_msecs [2022-12-14 06:38:43,876 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,878 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,879 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,880 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,880 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,881 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,883 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,883 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,884 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,884 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,885 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,886 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,887 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,888 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,889 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,889 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,891 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,892 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,892 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,893 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,894 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,900 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,912 WARN L623 FunctionHandler]: Unknown extern function wait_for_completion_timeout [2022-12-14 06:38:43,912 WARN L623 FunctionHandler]: Unknown extern function jiffies_to_msecs [2022-12-14 06:38:43,912 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,916 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 06:38:43,916 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 06:38:43,916 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 06:38:43,916 WARN L623 FunctionHandler]: Unknown extern function __copy_from_user_overflow [2022-12-14 06:38:43,917 WARN L623 FunctionHandler]: Unknown extern function __video_register_device [2022-12-14 06:38:43,917 WARN L623 FunctionHandler]: Unknown extern function video_devdata [2022-12-14 06:38:43,918 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,918 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,918 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,920 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,920 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,920 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,921 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,921 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,921 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 06:38:43,921 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 06:38:43,922 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-14 06:38:43,923 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,928 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,929 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,929 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,929 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,930 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,931 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,932 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,932 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,932 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,935 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-14 06:38:43,935 WARN L623 FunctionHandler]: Unknown extern function v4l2_device_register [2022-12-14 06:38:43,935 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-12-14 06:38:43,936 WARN L623 FunctionHandler]: Unknown extern function video_device_alloc [2022-12-14 06:38:43,936 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,938 WARN L623 FunctionHandler]: Unknown extern function video_device_release [2022-12-14 06:38:43,938 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,939 WARN L623 FunctionHandler]: Unknown extern function v4l2_ctrl_handler_init_class [2022-12-14 06:38:43,939 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 06:38:43,939 WARN L623 FunctionHandler]: Unknown extern function v4l2_ctrl_handler_free [2022-12-14 06:38:43,939 WARN L623 FunctionHandler]: Unknown extern function v4l2_ctrl_new_std [2022-12-14 06:38:43,939 WARN L623 FunctionHandler]: Unknown extern function v4l2_ctrl_new_std [2022-12-14 06:38:43,940 WARN L623 FunctionHandler]: Unknown extern function v4l2_ctrl_new_std_menu [2022-12-14 06:38:43,940 WARN L623 FunctionHandler]: Unknown extern function v4l2_ctrl_new_std [2022-12-14 06:38:43,940 WARN L623 FunctionHandler]: Unknown extern function v4l2_ctrl_new_std [2022-12-14 06:38:43,940 WARN L623 FunctionHandler]: Unknown extern function v4l2_ctrl_handler_free [2022-12-14 06:38:43,940 WARN L623 FunctionHandler]: Unknown extern function video_unregister_device [2022-12-14 06:38:43,940 WARN L623 FunctionHandler]: Unknown extern function v4l2_device_unregister [2022-12-14 06:38:43,942 WARN L623 FunctionHandler]: Unknown extern function video_ioctl2 [2022-12-14 06:38:43,944 WARN L623 FunctionHandler]: Unknown extern function video_device_release [2022-12-14 06:38:43,949 WARN L623 FunctionHandler]: Unknown extern function ldv_check_alloc_flags [2022-12-14 06:38:43,950 WARN L623 FunctionHandler]: Unknown extern function ldv_after_alloc [2022-12-14 06:38:43,950 WARN L623 FunctionHandler]: Unknown extern function ldv_assert [2022-12-14 06:38:43,960 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_fa70013a-f2d0-4888-bd5a-a4041228781c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314540,314553] [2022-12-14 06:38:43,960 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_fa70013a-f2d0-4888-bd5a-a4041228781c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314706,314719] [2022-12-14 06:38:43,960 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_fa70013a-f2d0-4888-bd5a-a4041228781c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314870,314883] [2022-12-14 06:38:43,961 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_fa70013a-f2d0-4888-bd5a-a4041228781c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[315035,315048] [2022-12-14 06:38:43,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:38:44,114 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:38:44,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:44 WrapperNode [2022-12-14 06:38:44,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:38:44,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:38:44,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:38:44,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:38:44,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:44" (1/1) ... [2022-12-14 06:38:44,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:44" (1/1) ... [2022-12-14 06:38:44,311 INFO L138 Inliner]: procedures = 386, calls = 2501, calls flagged for inlining = 198, calls inlined = 148, statements flattened = 4928 [2022-12-14 06:38:44,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:38:44,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:38:44,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:38:44,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:38:44,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:44" (1/1) ... [2022-12-14 06:38:44,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:44" (1/1) ... [2022-12-14 06:38:44,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:44" (1/1) ... [2022-12-14 06:38:44,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:44" (1/1) ... [2022-12-14 06:38:44,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:44" (1/1) ... [2022-12-14 06:38:44,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:44" (1/1) ... [2022-12-14 06:38:44,467 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:44" (1/1) ... [2022-12-14 06:38:44,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:44" (1/1) ... [2022-12-14 06:38:44,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:38:44,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:38:44,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:38:44,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:38:44,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:44" (1/1) ... [2022-12-14 06:38:44,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:38:44,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:38:44,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:38:44,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:38:44,568 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-12-14 06:38:44,568 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-12-14 06:38:44,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-12-14 06:38:44,568 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-12-14 06:38:44,568 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-12-14 06:38:44,568 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-12-14 06:38:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-14 06:38:44,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-14 06:38:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-12-14 06:38:44,569 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-12-14 06:38:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_stereo_mono [2022-12-14 06:38:44,569 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_stereo_mono [2022-12-14 06:38:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-12-14 06:38:44,569 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-12-14 06:38:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_len [2022-12-14 06:38:44,569 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_len [2022-12-14 06:38:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2022-12-14 06:38:44,569 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2022-12-14 06:38:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-12-14 06:38:44,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-12-14 06:38:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-12-14 06:38:44,570 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-12-14 06:38:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2022-12-14 06:38:44,570 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2022-12-14 06:38:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-12-14 06:38:44,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-12-14 06:38:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-12-14 06:38:44,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-12-14 06:38:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-12-14 06:38:44,570 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-12-14 06:38:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:38:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2022-12-14 06:38:44,570 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2022-12-14 06:38:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure st_unregister [2022-12-14 06:38:44,570 INFO L138 BoogieDeclarations]: Found implementation of procedure st_unregister [2022-12-14 06:38:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-14 06:38:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-12-14 06:38:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-12-14 06:38:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-12-14 06:38:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-12-14 06:38:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 06:38:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-12-14 06:38:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-12-14 06:38:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 06:38:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_fmdev [2022-12-14 06:38:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_fmdev [2022-12-14 06:38:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_release [2022-12-14 06:38:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_release [2022-12-14 06:38:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-12-14 06:38:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-12-14 06:38:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_fmdev [2022-12-14 06:38:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_fmdev [2022-12-14 06:38:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-12-14 06:38:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-12-14 06:38:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-12-14 06:38:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-12-14 06:38:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_rds_mode [2022-12-14 06:38:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_rds_mode [2022-12-14 06:38:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2022-12-14 06:38:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2022-12-14 06:38:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2022-12-14 06:38:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2022-12-14 06:38:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_rds_mode [2022-12-14 06:38:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_rds_mode [2022-12-14 06:38:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 06:38:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-12-14 06:38:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-12-14 06:38:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-12-14 06:38:44,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-12-14 06:38:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-12-14 06:38:44,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-12-14 06:38:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-12-14 06:38:44,573 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-12-14 06:38:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:38:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-12-14 06:38:44,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-12-14 06:38:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 06:38:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-12-14 06:38:44,573 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-12-14 06:38:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-12-14 06:38:44,573 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-12-14 06:38:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_preemph_filter [2022-12-14 06:38:44,573 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_preemph_filter [2022-12-14 06:38:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-12-14 06:38:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-12-14 06:38:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-12-14 06:38:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-12-14 06:38:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-12-14 06:38:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-12-14 06:38:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-12-14 06:38:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-12-14 06:38:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure fm_g_volatile_ctrl [2022-12-14 06:38:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_g_volatile_ctrl [2022-12-14 06:38:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:38:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:38:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-12-14 06:38:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-12-14 06:38:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-12-14 06:38:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-12-14 06:38:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure fm_config_rx_mute_reg [2022-12-14 06:38:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_config_rx_mute_reg [2022-12-14 06:38:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-12-14 06:38:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-12-14 06:38:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-14 06:38:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-14 06:38:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_data_mode [2022-12-14 06:38:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_data_mode [2022-12-14 06:38:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-12-14 06:38:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-12-14 06:38:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_pwr_lvl [2022-12-14 06:38:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_pwr_lvl [2022-12-14 06:38:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2022-12-14 06:38:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2022-12-14 06:38:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_prepare [2022-12-14 06:38:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_prepare [2022-12-14 06:38:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_send_cmd [2022-12-14 06:38:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_send_cmd [2022-12-14 06:38:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2022-12-14 06:38:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2022-12-14 06:38:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure fm_send_cmd [2022-12-14 06:38:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_send_cmd [2022-12-14 06:38:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-12-14 06:38:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-12-14 06:38:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 06:38:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 06:38:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call_stage [2022-12-14 06:38:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call_stage [2022-12-14 06:38:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-12-14 06:38:44,577 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-12-14 06:38:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2022-12-14 06:38:44,577 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2022-12-14 06:38:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:38:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2022-12-14 06:38:44,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2022-12-14 06:38:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 06:38:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_rds_cache [2022-12-14 06:38:44,577 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_rds_cache [2022-12-14 06:38:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_station_info [2022-12-14 06:38:44,577 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_station_info [2022-12-14 06:38:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_s_ctrl [2022-12-14 06:38:44,577 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_s_ctrl [2022-12-14 06:38:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 06:38:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-12-14 06:38:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-12-14 06:38:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2022-12-14 06:38:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2022-12-14 06:38:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure enable_xmit [2022-12-14 06:38:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_xmit [2022-12-14 06:38:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-12-14 06:38:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-12-14 06:38:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_volume [2022-12-14 06:38:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_volume [2022-12-14 06:38:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-12-14 06:38:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-12-14 06:38:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-12-14 06:38:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-12-14 06:38:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-12-14 06:38:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-12-14 06:38:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-12-14 06:38:44,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-12-14 06:38:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-12-14 06:38:44,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-12-14 06:38:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_mutex_of_fmdev [2022-12-14 06:38:44,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_mutex_of_fmdev [2022-12-14 06:38:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_text [2022-12-14 06:38:44,579 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_text [2022-12-14 06:38:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-12-14 06:38:44,579 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-12-14 06:38:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_release [2022-12-14 06:38:44,579 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_release [2022-12-14 06:38:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-12-14 06:38:44,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-12-14 06:38:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-12-14 06:38:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-12-14 06:38:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-12-14 06:38:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-12-14 06:38:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-12-14 06:38:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-12-14 06:38:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-12-14 06:38:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-12-14 06:38:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 06:38:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-12-14 06:38:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-12-14 06:38:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-14 06:38:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-14 06:38:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_open [2022-12-14 06:38:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_open [2022-12-14 06:38:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-12-14 06:38:44,581 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-12-14 06:38:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_freq [2022-12-14 06:38:44,581 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_freq [2022-12-14 06:38:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_mode [2022-12-14 06:38:44,581 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_mode [2022-12-14 06:38:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_write [2022-12-14 06:38:44,581 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_write [2022-12-14 06:38:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-12-14 06:38:44,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-12-14 06:38:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call [2022-12-14 06:38:44,581 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call [2022-12-14 06:38:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-12-14 06:38:44,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-12-14 06:38:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-12-14 06:38:44,581 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-12-14 06:38:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure fm_power_down [2022-12-14 06:38:44,582 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_power_down [2022-12-14 06:38:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure fm_download_firmware [2022-12-14 06:38:44,582 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_download_firmware [2022-12-14 06:38:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:38:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-12-14 06:38:44,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-12-14 06:38:45,137 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:38:45,139 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:38:45,269 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-12-14 06:38:50,482 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-12-14 06:38:50,594 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:38:51,355 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:38:51,355 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 06:38:51,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:38:51 BoogieIcfgContainer [2022-12-14 06:38:51,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:38:51,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:38:51,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:38:51,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:38:51,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:38:41" (1/3) ... [2022-12-14 06:38:51,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e95ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:38:51, skipping insertion in model container [2022-12-14 06:38:51,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:44" (2/3) ... [2022-12-14 06:38:51,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e95ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:38:51, skipping insertion in model container [2022-12-14 06:38:51,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:38:51" (3/3) ... [2022-12-14 06:38:51,365 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2022-12-14 06:38:51,380 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:38:51,380 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-14 06:38:51,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:38:51,451 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;@1e64afde, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:38:51,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-14 06:38:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 1354 states, 833 states have (on average 1.3445378151260505) internal successors, (1120), 849 states have internal predecessors, (1120), 422 states have call successors, (422), 97 states have call predecessors, (422), 96 states have return successors, (415), 412 states have call predecessors, (415), 415 states have call successors, (415) [2022-12-14 06:38:51,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-12-14 06:38:51,476 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:38:51,476 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:38:51,477 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:38:51,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:38:51,480 INFO L85 PathProgramCache]: Analyzing trace with hash 369954220, now seen corresponding path program 1 times [2022-12-14 06:38:51,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:38:51,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408228253] [2022-12-14 06:38:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:38:51,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:38:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:38:52,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-12-14 06:38:52,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:38:52,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408228253] [2022-12-14 06:38:52,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408228253] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:38:52,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:38:52,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:38:52,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855731680] [2022-12-14 06:38:52,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:38:52,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:38:52,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:38:52,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:38:52,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:38:52,374 INFO L87 Difference]: Start difference. First operand has 1354 states, 833 states have (on average 1.3445378151260505) internal successors, (1120), 849 states have internal predecessors, (1120), 422 states have call successors, (422), 97 states have call predecessors, (422), 96 states have return successors, (415), 412 states have call predecessors, (415), 415 states have call successors, (415) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-12-14 06:38:55,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:38:56,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:38:56,045 INFO L93 Difference]: Finished difference Result 3836 states and 5602 transitions. [2022-12-14 06:38:56,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:38:56,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 216 [2022-12-14 06:38:56,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:38:56,069 INFO L225 Difference]: With dead ends: 3836 [2022-12-14 06:38:56,069 INFO L226 Difference]: Without dead ends: 2510 [2022-12-14 06:38:56,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:38:56,080 INFO L413 NwaCegarLoop]: 2039 mSDtfsCounter, 1791 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1793 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:38:56,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1793 Valid, 3624 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 520 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-12-14 06:38:56,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2022-12-14 06:38:56,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 2505. [2022-12-14 06:38:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 1564 states have (on average 1.342071611253197) internal successors, (2099), 1595 states have internal predecessors, (2099), 755 states have call successors, (755), 184 states have call predecessors, (755), 183 states have return successors, (753), 744 states have call predecessors, (753), 751 states have call successors, (753) [2022-12-14 06:38:56,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 3607 transitions. [2022-12-14 06:38:56,285 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 3607 transitions. Word has length 216 [2022-12-14 06:38:56,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:38:56,286 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 3607 transitions. [2022-12-14 06:38:56,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-12-14 06:38:56,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 3607 transitions. [2022-12-14 06:38:56,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-12-14 06:38:56,294 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:38:56,294 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:38:56,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:38:56,295 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:38:56,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:38:56,295 INFO L85 PathProgramCache]: Analyzing trace with hash -411853188, now seen corresponding path program 1 times [2022-12-14 06:38:56,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:38:56,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895198284] [2022-12-14 06:38:56,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:38:56,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:38:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:38:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-12-14 06:38:56,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:38:56,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895198284] [2022-12-14 06:38:56,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895198284] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:38:56,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:38:56,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:38:56,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219357371] [2022-12-14 06:38:56,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:38:56,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:38:56,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:38:56,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:38:56,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:38:56,618 INFO L87 Difference]: Start difference. First operand 2505 states and 3607 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-12-14 06:38:59,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:38:59,879 INFO L93 Difference]: Finished difference Result 5461 states and 7736 transitions. [2022-12-14 06:38:59,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:38:59,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 235 [2022-12-14 06:38:59,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:38:59,894 INFO L225 Difference]: With dead ends: 5461 [2022-12-14 06:38:59,894 INFO L226 Difference]: Without dead ends: 2995 [2022-12-14 06:38:59,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:38:59,904 INFO L413 NwaCegarLoop]: 1998 mSDtfsCounter, 1185 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 3635 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:38:59,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 3635 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 06:38:59,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2022-12-14 06:39:00,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 2974. [2022-12-14 06:39:00,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 1829 states have (on average 1.3121924548933843) internal successors, (2400), 1874 states have internal predecessors, (2400), 873 states have call successors, (873), 270 states have call predecessors, (873), 269 states have return successors, (871), 854 states have call predecessors, (871), 869 states have call successors, (871) [2022-12-14 06:39:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4144 transitions. [2022-12-14 06:39:00,043 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4144 transitions. Word has length 235 [2022-12-14 06:39:00,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:39:00,044 INFO L495 AbstractCegarLoop]: Abstraction has 2974 states and 4144 transitions. [2022-12-14 06:39:00,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-12-14 06:39:00,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4144 transitions. [2022-12-14 06:39:00,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-12-14 06:39:00,051 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:39:00,051 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:39:00,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:39:00,052 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:39:00,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:39:00,052 INFO L85 PathProgramCache]: Analyzing trace with hash 2071300288, now seen corresponding path program 1 times [2022-12-14 06:39:00,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:39:00,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936286665] [2022-12-14 06:39:00,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:39:00,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:39:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:39:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2022-12-14 06:39:00,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:39:00,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936286665] [2022-12-14 06:39:00,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936286665] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:39:00,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:39:00,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:39:00,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731923020] [2022-12-14 06:39:00,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:39:00,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:39:00,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:39:00,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:39:00,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:39:00,555 INFO L87 Difference]: Start difference. First operand 2974 states and 4144 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-12-14 06:39:03,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:39:05,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:39:05,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:39:05,716 INFO L93 Difference]: Finished difference Result 5212 states and 7226 transitions. [2022-12-14 06:39:05,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:39:05,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 254 [2022-12-14 06:39:05,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:39:05,729 INFO L225 Difference]: With dead ends: 5212 [2022-12-14 06:39:05,729 INFO L226 Difference]: Without dead ends: 2277 [2022-12-14 06:39:05,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:39:05,742 INFO L413 NwaCegarLoop]: 1410 mSDtfsCounter, 2070 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2230 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:39:05,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2230 Valid, 1926 Invalid, 1932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-12-14 06:39:05,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2022-12-14 06:39:05,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 2271. [2022-12-14 06:39:05,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 1407 states have (on average 1.3020611229566454) internal successors, (1832), 1422 states have internal predecessors, (1832), 650 states have call successors, (650), 212 states have call predecessors, (650), 211 states have return successors, (646), 641 states have call predecessors, (646), 646 states have call successors, (646) [2022-12-14 06:39:05,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 3128 transitions. [2022-12-14 06:39:05,839 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 3128 transitions. Word has length 254 [2022-12-14 06:39:05,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:39:05,840 INFO L495 AbstractCegarLoop]: Abstraction has 2271 states and 3128 transitions. [2022-12-14 06:39:05,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-12-14 06:39:05,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 3128 transitions. [2022-12-14 06:39:05,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-12-14 06:39:05,843 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:39:05,844 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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] [2022-12-14 06:39:05,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 06:39:05,844 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:39:05,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:39:05,844 INFO L85 PathProgramCache]: Analyzing trace with hash -379674084, now seen corresponding path program 1 times [2022-12-14 06:39:05,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:39:05,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387387551] [2022-12-14 06:39:05,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:39:05,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:39:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:39:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1537 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1537 trivial. 0 not checked. [2022-12-14 06:39:06,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:39:06,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387387551] [2022-12-14 06:39:06,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387387551] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:39:06,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:39:06,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:39:06,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588067664] [2022-12-14 06:39:06,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:39:06,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:39:06,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:39:06,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:39:06,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:39:06,603 INFO L87 Difference]: Start difference. First operand 2271 states and 3128 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-12-14 06:39:10,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:39:10,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:39:10,698 INFO L93 Difference]: Finished difference Result 2277 states and 3133 transitions. [2022-12-14 06:39:10,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:39:10,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 262 [2022-12-14 06:39:10,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:39:10,706 INFO L225 Difference]: With dead ends: 2277 [2022-12-14 06:39:10,706 INFO L226 Difference]: Without dead ends: 2275 [2022-12-14 06:39:10,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:39:10,707 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1726 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 4640 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:39:10,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 4640 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-14 06:39:10,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2022-12-14 06:39:10,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2275. [2022-12-14 06:39:10,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2275 states, 1410 states have (on average 1.301418439716312) internal successors, (1835), 1425 states have internal predecessors, (1835), 650 states have call successors, (650), 213 states have call predecessors, (650), 212 states have return successors, (646), 641 states have call predecessors, (646), 646 states have call successors, (646) [2022-12-14 06:39:10,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 3131 transitions. [2022-12-14 06:39:10,801 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 3131 transitions. Word has length 262 [2022-12-14 06:39:10,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:39:10,802 INFO L495 AbstractCegarLoop]: Abstraction has 2275 states and 3131 transitions. [2022-12-14 06:39:10,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-12-14 06:39:10,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 3131 transitions. [2022-12-14 06:39:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-12-14 06:39:10,806 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:39:10,806 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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] [2022-12-14 06:39:10,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 06:39:10,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:39:10,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:39:10,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1921528715, now seen corresponding path program 1 times [2022-12-14 06:39:10,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:39:10,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893899633] [2022-12-14 06:39:10,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:39:10,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:39:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:39:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1548 trivial. 0 not checked. [2022-12-14 06:39:11,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:39:11,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893899633] [2022-12-14 06:39:11,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893899633] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:39:11,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:39:11,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:39:11,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416730120] [2022-12-14 06:39:11,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:39:11,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:39:11,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:39:11,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:39:11,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:39:11,372 INFO L87 Difference]: Start difference. First operand 2275 states and 3131 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-12-14 06:39:14,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:39:15,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:39:15,100 INFO L93 Difference]: Finished difference Result 2291 states and 3143 transitions. [2022-12-14 06:39:15,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:39:15,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 266 [2022-12-14 06:39:15,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:39:15,110 INFO L225 Difference]: With dead ends: 2291 [2022-12-14 06:39:15,111 INFO L226 Difference]: Without dead ends: 2289 [2022-12-14 06:39:15,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:39:15,112 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 1711 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 4653 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:39:15,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 4653 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 722 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-12-14 06:39:15,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2022-12-14 06:39:15,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2287. [2022-12-14 06:39:15,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 1417 states have (on average 1.2999294283697953) internal successors, (1842), 1432 states have internal predecessors, (1842), 650 states have call successors, (650), 218 states have call predecessors, (650), 217 states have return successors, (646), 641 states have call predecessors, (646), 646 states have call successors, (646) [2022-12-14 06:39:15,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3138 transitions. [2022-12-14 06:39:15,197 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3138 transitions. Word has length 266 [2022-12-14 06:39:15,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:39:15,197 INFO L495 AbstractCegarLoop]: Abstraction has 2287 states and 3138 transitions. [2022-12-14 06:39:15,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-12-14 06:39:15,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3138 transitions. [2022-12-14 06:39:15,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-12-14 06:39:15,200 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:39:15,201 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:39:15,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 06:39:15,201 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:39:15,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:39:15,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1802394649, now seen corresponding path program 1 times [2022-12-14 06:39:15,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:39:15,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748881588] [2022-12-14 06:39:15,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:39:15,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:39:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:39:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1544 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2022-12-14 06:39:15,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:39:15,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748881588] [2022-12-14 06:39:15,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748881588] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:39:15,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:39:15,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:39:15,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551988106] [2022-12-14 06:39:15,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:39:15,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:39:15,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:39:15,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:39:15,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:39:15,756 INFO L87 Difference]: Start difference. First operand 2287 states and 3138 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 06:39:19,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:39:20,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:39:20,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:39:20,819 INFO L93 Difference]: Finished difference Result 2293 states and 3143 transitions. [2022-12-14 06:39:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:39:20,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 271 [2022-12-14 06:39:20,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:39:20,827 INFO L225 Difference]: With dead ends: 2293 [2022-12-14 06:39:20,827 INFO L226 Difference]: Without dead ends: 2291 [2022-12-14 06:39:20,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:39:20,829 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 1721 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 4643 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:39:20,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1724 Valid, 4643 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-12-14 06:39:20,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2022-12-14 06:39:20,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2291. [2022-12-14 06:39:20,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 1420 states have (on average 1.2992957746478873) internal successors, (1845), 1435 states have internal predecessors, (1845), 650 states have call successors, (650), 219 states have call predecessors, (650), 218 states have return successors, (646), 641 states have call predecessors, (646), 646 states have call successors, (646) [2022-12-14 06:39:20,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3141 transitions. [2022-12-14 06:39:20,935 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3141 transitions. Word has length 271 [2022-12-14 06:39:20,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:39:20,935 INFO L495 AbstractCegarLoop]: Abstraction has 2291 states and 3141 transitions. [2022-12-14 06:39:20,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 06:39:20,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3141 transitions. [2022-12-14 06:39:20,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-12-14 06:39:20,938 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:39:20,939 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:39:20,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 06:39:20,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:39:20,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:39:20,939 INFO L85 PathProgramCache]: Analyzing trace with hash 782916682, now seen corresponding path program 1 times [2022-12-14 06:39:20,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:39:20,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472947618] [2022-12-14 06:39:20,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:39:20,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:39:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:39:21,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1549 trivial. 0 not checked. [2022-12-14 06:39:21,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:39:21,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472947618] [2022-12-14 06:39:21,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472947618] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:39:21,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:39:21,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:39:21,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693795329] [2022-12-14 06:39:21,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:39:21,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:39:21,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:39:21,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:39:21,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:39:21,466 INFO L87 Difference]: Start difference. First operand 2291 states and 3141 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-12-14 06:39:25,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:39:26,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:39:26,169 INFO L93 Difference]: Finished difference Result 2299 states and 3149 transitions. [2022-12-14 06:39:26,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:39:26,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 277 [2022-12-14 06:39:26,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:39:26,179 INFO L225 Difference]: With dead ends: 2299 [2022-12-14 06:39:26,179 INFO L226 Difference]: Without dead ends: 2297 [2022-12-14 06:39:26,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:39:26,180 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 1711 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 4653 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:39:26,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1715 Valid, 4653 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 722 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-12-14 06:39:26,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2022-12-14 06:39:26,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 2295. [2022-12-14 06:39:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2295 states, 1423 states have (on average 1.298664792691497) internal successors, (1848), 1438 states have internal predecessors, (1848), 650 states have call successors, (650), 220 states have call predecessors, (650), 219 states have return successors, (646), 641 states have call predecessors, (646), 646 states have call successors, (646) [2022-12-14 06:39:26,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 3144 transitions. [2022-12-14 06:39:26,281 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 3144 transitions. Word has length 277 [2022-12-14 06:39:26,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:39:26,281 INFO L495 AbstractCegarLoop]: Abstraction has 2295 states and 3144 transitions. [2022-12-14 06:39:26,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-12-14 06:39:26,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 3144 transitions. [2022-12-14 06:39:26,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-12-14 06:39:26,285 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:39:26,285 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 5, 5, 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] [2022-12-14 06:39:26,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 06:39:26,285 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:39:26,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:39:26,286 INFO L85 PathProgramCache]: Analyzing trace with hash 614601747, now seen corresponding path program 1 times [2022-12-14 06:39:26,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:39:26,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228538037] [2022-12-14 06:39:26,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:39:26,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:39:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:39:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1599 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1599 trivial. 0 not checked. [2022-12-14 06:39:26,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:39:26,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228538037] [2022-12-14 06:39:26,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228538037] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:39:26,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:39:26,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:39:26,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73336945] [2022-12-14 06:39:26,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:39:26,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:39:26,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:39:26,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:39:26,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:39:26,472 INFO L87 Difference]: Start difference. First operand 2295 states and 3144 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-12-14 06:39:29,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:39:30,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:39:30,387 INFO L93 Difference]: Finished difference Result 5951 states and 8177 transitions. [2022-12-14 06:39:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:39:30,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 287 [2022-12-14 06:39:30,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:39:30,398 INFO L225 Difference]: With dead ends: 5951 [2022-12-14 06:39:30,398 INFO L226 Difference]: Without dead ends: 3713 [2022-12-14 06:39:30,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:39:30,405 INFO L413 NwaCegarLoop]: 1925 mSDtfsCounter, 1618 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 3454 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-14 06:39:30,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 3454 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-14 06:39:30,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2022-12-14 06:39:30,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3674. [2022-12-14 06:39:30,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 2300 states have (on average 1.3065217391304347) internal successors, (3005), 2332 states have internal predecessors, (3005), 1021 states have call successors, (1021), 351 states have call predecessors, (1021), 350 states have return successors, (1017), 1000 states have call predecessors, (1017), 1017 states have call successors, (1017) [2022-12-14 06:39:30,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 5043 transitions. [2022-12-14 06:39:30,593 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 5043 transitions. Word has length 287 [2022-12-14 06:39:30,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:39:30,593 INFO L495 AbstractCegarLoop]: Abstraction has 3674 states and 5043 transitions. [2022-12-14 06:39:30,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-12-14 06:39:30,594 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 5043 transitions. [2022-12-14 06:39:30,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-12-14 06:39:30,597 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:39:30,597 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:39:30,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 06:39:30,598 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:39:30,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:39:30,598 INFO L85 PathProgramCache]: Analyzing trace with hash 350697127, now seen corresponding path program 1 times [2022-12-14 06:39:30,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:39:30,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135373989] [2022-12-14 06:39:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:39:30,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:39:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:39:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-12-14 06:39:31,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:39:31,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135373989] [2022-12-14 06:39:31,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135373989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:39:31,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:39:31,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:39:31,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830894270] [2022-12-14 06:39:31,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:39:31,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:39:31,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:39:31,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:39:31,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:39:31,224 INFO L87 Difference]: Start difference. First operand 3674 states and 5043 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-12-14 06:39:35,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:39:37,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:39:39,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:39:41,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:39:43,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:39:43,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:39:43,655 INFO L93 Difference]: Finished difference Result 6773 states and 9338 transitions. [2022-12-14 06:39:43,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 06:39:43,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 281 [2022-12-14 06:39:43,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:39:43,676 INFO L225 Difference]: With dead ends: 6773 [2022-12-14 06:39:43,676 INFO L226 Difference]: Without dead ends: 6769 [2022-12-14 06:39:43,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:39:43,679 INFO L413 NwaCegarLoop]: 1989 mSDtfsCounter, 1573 mSDsluCounter, 5460 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 7449 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:39:43,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 7449 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1013 Invalid, 4 Unknown, 0 Unchecked, 12.1s Time] [2022-12-14 06:39:43,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6769 states. [2022-12-14 06:39:44,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6769 to 6750. [2022-12-14 06:39:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6750 states, 4210 states have (on average 1.312351543942993) internal successors, (5525), 4282 states have internal predecessors, (5525), 1892 states have call successors, (1892), 653 states have call predecessors, (1892), 645 states have return successors, (1900), 1832 states have call predecessors, (1900), 1884 states have call successors, (1900) [2022-12-14 06:39:44,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6750 states to 6750 states and 9317 transitions. [2022-12-14 06:39:44,129 INFO L78 Accepts]: Start accepts. Automaton has 6750 states and 9317 transitions. Word has length 281 [2022-12-14 06:39:44,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:39:44,130 INFO L495 AbstractCegarLoop]: Abstraction has 6750 states and 9317 transitions. [2022-12-14 06:39:44,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-12-14 06:39:44,130 INFO L276 IsEmpty]: Start isEmpty. Operand 6750 states and 9317 transitions. [2022-12-14 06:39:44,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-12-14 06:39:44,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:39:44,136 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:39:44,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 06:39:44,136 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:39:44,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:39:44,136 INFO L85 PathProgramCache]: Analyzing trace with hash -148641974, now seen corresponding path program 1 times [2022-12-14 06:39:44,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:39:44,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056555306] [2022-12-14 06:39:44,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:39:44,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:39:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:39:44,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2022-12-14 06:39:44,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:39:44,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056555306] [2022-12-14 06:39:44,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056555306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:39:44,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:39:44,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:39:44,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682599400] [2022-12-14 06:39:44,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:39:44,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:39:44,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:39:44,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:39:44,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:39:44,720 INFO L87 Difference]: Start difference. First operand 6750 states and 9317 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-12-14 06:39:49,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:39:49,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:39:49,940 INFO L93 Difference]: Finished difference Result 6756 states and 9322 transitions. [2022-12-14 06:39:49,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:39:49,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 287 [2022-12-14 06:39:49,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:39:49,961 INFO L225 Difference]: With dead ends: 6756 [2022-12-14 06:39:49,961 INFO L226 Difference]: Without dead ends: 6642 [2022-12-14 06:39:49,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:39:49,964 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1721 mSDsluCounter, 3093 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 4646 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:39:49,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1721 Valid, 4646 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 714 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-12-14 06:39:49,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6642 states. [2022-12-14 06:39:50,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6642 to 6642. [2022-12-14 06:39:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6642 states, 4159 states have (on average 1.3120942534263045) internal successors, (5457), 4215 states have internal predecessors, (5457), 1854 states have call successors, (1854), 633 states have call predecessors, (1854), 626 states have return successors, (1866), 1807 states have call predecessors, (1866), 1850 states have call successors, (1866) [2022-12-14 06:39:50,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6642 states to 6642 states and 9177 transitions. [2022-12-14 06:39:50,316 INFO L78 Accepts]: Start accepts. Automaton has 6642 states and 9177 transitions. Word has length 287 [2022-12-14 06:39:50,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:39:50,317 INFO L495 AbstractCegarLoop]: Abstraction has 6642 states and 9177 transitions. [2022-12-14 06:39:50,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-12-14 06:39:50,317 INFO L276 IsEmpty]: Start isEmpty. Operand 6642 states and 9177 transitions. [2022-12-14 06:39:50,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-12-14 06:39:50,324 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:39:50,324 INFO L195 NwaCegarLoop]: trace histogram [25, 20, 20, 20, 20, 20, 20, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:39:50,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 06:39:50,325 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:39:50,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:39:50,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1723004640, now seen corresponding path program 1 times [2022-12-14 06:39:50,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:39:50,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256214878] [2022-12-14 06:39:50,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:39:50,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:39:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:39:50,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1761 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1754 trivial. 0 not checked. [2022-12-14 06:39:50,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:39:50,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256214878] [2022-12-14 06:39:50,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256214878] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:39:50,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:39:50,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:39:50,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150039112] [2022-12-14 06:39:50,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:39:50,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:39:50,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:39:50,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:39:50,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:39:50,681 INFO L87 Difference]: Start difference. First operand 6642 states and 9177 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-12-14 06:39:53,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:39:54,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:39:54,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:39:54,843 INFO L93 Difference]: Finished difference Result 14858 states and 20449 transitions. [2022-12-14 06:39:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:39:54,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 300 [2022-12-14 06:39:54,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:39:54,874 INFO L225 Difference]: With dead ends: 14858 [2022-12-14 06:39:54,874 INFO L226 Difference]: Without dead ends: 8498 [2022-12-14 06:39:54,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:39:54,895 INFO L413 NwaCegarLoop]: 2136 mSDtfsCounter, 757 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:39:54,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 3618 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-14 06:39:54,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8498 states. [2022-12-14 06:39:55,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8498 to 8439. [2022-12-14 06:39:55,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8439 states, 5273 states have (on average 1.3038118717997345) internal successors, (6875), 5347 states have internal predecessors, (6875), 2325 states have call successors, (2325), 846 states have call predecessors, (2325), 838 states have return successors, (2339), 2260 states have call predecessors, (2339), 2321 states have call successors, (2339) [2022-12-14 06:39:55,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8439 states to 8439 states and 11539 transitions. [2022-12-14 06:39:55,390 INFO L78 Accepts]: Start accepts. Automaton has 8439 states and 11539 transitions. Word has length 300 [2022-12-14 06:39:55,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:39:55,390 INFO L495 AbstractCegarLoop]: Abstraction has 8439 states and 11539 transitions. [2022-12-14 06:39:55,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-12-14 06:39:55,390 INFO L276 IsEmpty]: Start isEmpty. Operand 8439 states and 11539 transitions. [2022-12-14 06:39:55,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-12-14 06:39:55,398 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:39:55,398 INFO L195 NwaCegarLoop]: trace histogram [25, 20, 20, 20, 20, 20, 20, 7, 7, 3, 3, 3, 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] [2022-12-14 06:39:55,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 06:39:55,398 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:39:55,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:39:55,399 INFO L85 PathProgramCache]: Analyzing trace with hash 375921306, now seen corresponding path program 1 times [2022-12-14 06:39:55,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:39:55,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501261246] [2022-12-14 06:39:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:39:55,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:39:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:39:55,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1829 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1822 trivial. 0 not checked. [2022-12-14 06:39:55,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:39:55,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501261246] [2022-12-14 06:39:55,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501261246] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:39:55,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:39:55,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:39:55,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667886085] [2022-12-14 06:39:55,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:39:55,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:39:55,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:39:55,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:39:55,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:39:55,610 INFO L87 Difference]: Start difference. First operand 8439 states and 11539 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-12-14 06:39:59,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:40:01,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:40:01,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:40:01,632 INFO L93 Difference]: Finished difference Result 20352 states and 27881 transitions. [2022-12-14 06:40:01,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:40:01,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 351 [2022-12-14 06:40:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:40:01,664 INFO L225 Difference]: With dead ends: 20352 [2022-12-14 06:40:01,664 INFO L226 Difference]: Without dead ends: 12195 [2022-12-14 06:40:01,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:40:01,681 INFO L413 NwaCegarLoop]: 2907 mSDtfsCounter, 1615 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 4423 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:40:01,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 4423 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 715 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-12-14 06:40:01,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12195 states. [2022-12-14 06:40:02,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12195 to 12108. [2022-12-14 06:40:02,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12108 states, 7584 states have (on average 1.3053797468354431) internal successors, (9900), 7696 states have internal predecessors, (9900), 3319 states have call successors, (3319), 1212 states have call predecessors, (3319), 1202 states have return successors, (3341), 3220 states have call predecessors, (3341), 3315 states have call successors, (3341) [2022-12-14 06:40:02,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12108 states to 12108 states and 16560 transitions. [2022-12-14 06:40:02,361 INFO L78 Accepts]: Start accepts. Automaton has 12108 states and 16560 transitions. Word has length 351 [2022-12-14 06:40:02,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:40:02,362 INFO L495 AbstractCegarLoop]: Abstraction has 12108 states and 16560 transitions. [2022-12-14 06:40:02,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-12-14 06:40:02,362 INFO L276 IsEmpty]: Start isEmpty. Operand 12108 states and 16560 transitions. [2022-12-14 06:40:02,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-12-14 06:40:02,370 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:40:02,370 INFO L195 NwaCegarLoop]: trace histogram [28, 20, 20, 20, 20, 20, 20, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-12-14 06:40:02,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 06:40:02,370 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:40:02,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:40:02,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1642088406, now seen corresponding path program 1 times [2022-12-14 06:40:02,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:40:02,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404964198] [2022-12-14 06:40:02,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:02,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:40:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:02,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2151 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2132 trivial. 0 not checked. [2022-12-14 06:40:02,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:40:02,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404964198] [2022-12-14 06:40:02,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404964198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:40:02,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:40:02,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:40:02,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490410515] [2022-12-14 06:40:02,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:40:02,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:40:02,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:40:02,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:40:02,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:40:02,769 INFO L87 Difference]: Start difference. First operand 12108 states and 16560 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-12-14 06:40:09,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:40:10,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:40:11,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:40:11,358 INFO L93 Difference]: Finished difference Result 27893 states and 38110 transitions. [2022-12-14 06:40:11,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:40:11,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 409 [2022-12-14 06:40:11,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:40:11,401 INFO L225 Difference]: With dead ends: 27893 [2022-12-14 06:40:11,402 INFO L226 Difference]: Without dead ends: 16067 [2022-12-14 06:40:11,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:40:11,436 INFO L413 NwaCegarLoop]: 2956 mSDtfsCounter, 1713 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 5189 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:40:11,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 5189 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-12-14 06:40:11,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16067 states. [2022-12-14 06:40:12,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16067 to 15985. [2022-12-14 06:40:12,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15985 states, 10011 states have (on average 1.3050644291279592) internal successors, (13065), 10160 states have internal predecessors, (13065), 4346 states have call successors, (4346), 1637 states have call predecessors, (4346), 1625 states have return successors, (4374), 4214 states have call predecessors, (4374), 4342 states have call successors, (4374) [2022-12-14 06:40:12,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15985 states to 15985 states and 21785 transitions. [2022-12-14 06:40:12,422 INFO L78 Accepts]: Start accepts. Automaton has 15985 states and 21785 transitions. Word has length 409 [2022-12-14 06:40:12,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:40:12,423 INFO L495 AbstractCegarLoop]: Abstraction has 15985 states and 21785 transitions. [2022-12-14 06:40:12,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-12-14 06:40:12,423 INFO L276 IsEmpty]: Start isEmpty. Operand 15985 states and 21785 transitions. [2022-12-14 06:40:12,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-12-14 06:40:12,432 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:40:12,432 INFO L195 NwaCegarLoop]: trace histogram [27, 20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 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] [2022-12-14 06:40:12,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 06:40:12,432 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:40:12,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:40:12,433 INFO L85 PathProgramCache]: Analyzing trace with hash 643801517, now seen corresponding path program 1 times [2022-12-14 06:40:12,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:40:12,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067628631] [2022-12-14 06:40:12,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:12,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:40:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:13,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2775 trivial. 0 not checked. [2022-12-14 06:40:13,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:40:13,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067628631] [2022-12-14 06:40:13,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067628631] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:40:13,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:40:13,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:40:13,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776822343] [2022-12-14 06:40:13,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:40:13,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:40:13,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:40:13,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:40:13,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:40:13,355 INFO L87 Difference]: Start difference. First operand 15985 states and 21785 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-12-14 06:40:18,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:40:20,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:40:21,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:40:23,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:40:25,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:40:25,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:40:25,736 INFO L93 Difference]: Finished difference Result 16057 states and 21853 transitions. [2022-12-14 06:40:25,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:40:25,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 476 [2022-12-14 06:40:25,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:40:25,788 INFO L225 Difference]: With dead ends: 16057 [2022-12-14 06:40:25,788 INFO L226 Difference]: Without dead ends: 16055 [2022-12-14 06:40:25,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:40:25,794 INFO L413 NwaCegarLoop]: 1979 mSDtfsCounter, 1499 mSDsluCounter, 5448 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 7427 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:40:25,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 7427 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1011 Invalid, 1 Unknown, 0 Unchecked, 11.5s Time] [2022-12-14 06:40:25,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16055 states. [2022-12-14 06:40:26,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16055 to 16041. [2022-12-14 06:40:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16041 states, 10036 states have (on average 1.3037066560382622) internal successors, (13084), 10183 states have internal predecessors, (13084), 4361 states have call successors, (4361), 1652 states have call predecessors, (4361), 1641 states have return successors, (4387), 4232 states have call predecessors, (4387), 4357 states have call successors, (4387) [2022-12-14 06:40:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16041 states to 16041 states and 21832 transitions. [2022-12-14 06:40:26,607 INFO L78 Accepts]: Start accepts. Automaton has 16041 states and 21832 transitions. Word has length 476 [2022-12-14 06:40:26,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:40:26,608 INFO L495 AbstractCegarLoop]: Abstraction has 16041 states and 21832 transitions. [2022-12-14 06:40:26,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-12-14 06:40:26,608 INFO L276 IsEmpty]: Start isEmpty. Operand 16041 states and 21832 transitions. [2022-12-14 06:40:26,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-12-14 06:40:26,617 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:40:26,617 INFO L195 NwaCegarLoop]: trace histogram [27, 20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 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] [2022-12-14 06:40:26,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 06:40:26,618 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:40:26,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:40:26,618 INFO L85 PathProgramCache]: Analyzing trace with hash -59350198, now seen corresponding path program 1 times [2022-12-14 06:40:26,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:40:26,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95865205] [2022-12-14 06:40:26,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:26,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:40:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:26,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2776 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2754 trivial. 0 not checked. [2022-12-14 06:40:26,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:40:26,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95865205] [2022-12-14 06:40:26,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95865205] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:40:26,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:40:26,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:40:26,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831146014] [2022-12-14 06:40:26,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:40:26,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:40:26,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:40:26,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:40:26,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:40:26,932 INFO L87 Difference]: Start difference. First operand 16041 states and 21832 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-12-14 06:40:31,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:40:33,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:40:33,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:40:33,965 INFO L93 Difference]: Finished difference Result 36742 states and 49705 transitions. [2022-12-14 06:40:33,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:40:33,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 486 [2022-12-14 06:40:33,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:40:34,023 INFO L225 Difference]: With dead ends: 36742 [2022-12-14 06:40:34,023 INFO L226 Difference]: Without dead ends: 20983 [2022-12-14 06:40:34,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:40:34,064 INFO L413 NwaCegarLoop]: 2399 mSDtfsCounter, 1232 mSDsluCounter, 3231 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 5630 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:40:34,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 5630 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-12-14 06:40:34,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20983 states. [2022-12-14 06:40:35,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20983 to 20874. [2022-12-14 06:40:35,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20874 states, 13002 states have (on average 1.2963390247654207) internal successors, (16855), 13190 states have internal predecessors, (16855), 5591 states have call successors, (5591), 2294 states have call predecessors, (5591), 2278 states have return successors, (5620), 5421 states have call predecessors, (5620), 5587 states have call successors, (5620) [2022-12-14 06:40:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20874 states to 20874 states and 28066 transitions. [2022-12-14 06:40:35,099 INFO L78 Accepts]: Start accepts. Automaton has 20874 states and 28066 transitions. Word has length 486 [2022-12-14 06:40:35,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:40:35,100 INFO L495 AbstractCegarLoop]: Abstraction has 20874 states and 28066 transitions. [2022-12-14 06:40:35,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-12-14 06:40:35,101 INFO L276 IsEmpty]: Start isEmpty. Operand 20874 states and 28066 transitions. [2022-12-14 06:40:35,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2022-12-14 06:40:35,116 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:40:35,117 INFO L195 NwaCegarLoop]: trace histogram [31, 20, 20, 20, 20, 20, 20, 12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-14 06:40:35,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 06:40:35,117 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:40:35,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:40:35,117 INFO L85 PathProgramCache]: Analyzing trace with hash 105640634, now seen corresponding path program 1 times [2022-12-14 06:40:35,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:40:35,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849754753] [2022-12-14 06:40:35,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:35,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:40:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:35,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2393 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 2361 trivial. 0 not checked. [2022-12-14 06:40:35,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:40:35,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849754753] [2022-12-14 06:40:35,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849754753] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:40:35,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:40:35,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:40:35,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283425061] [2022-12-14 06:40:35,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:40:35,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:40:35,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:40:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:40:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:40:35,416 INFO L87 Difference]: Start difference. First operand 20874 states and 28066 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-12-14 06:40:39,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:40:41,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:40:45,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:40:46,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:40:46,392 INFO L93 Difference]: Finished difference Result 46474 states and 62501 transitions. [2022-12-14 06:40:46,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:40:46,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 460 [2022-12-14 06:40:46,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:40:46,475 INFO L225 Difference]: With dead ends: 46474 [2022-12-14 06:40:46,476 INFO L226 Difference]: Without dead ends: 25882 [2022-12-14 06:40:46,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:40:46,521 INFO L413 NwaCegarLoop]: 2951 mSDtfsCounter, 1637 mSDsluCounter, 3769 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1637 SdHoareTripleChecker+Valid, 6720 SdHoareTripleChecker+Invalid, 1885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:40:46,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1637 Valid, 6720 Invalid, 1885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1877 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2022-12-14 06:40:46,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25882 states. [2022-12-14 06:40:47,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25882 to 25775. [2022-12-14 06:40:47,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25775 states, 16075 states have (on average 1.2971695178849145) internal successors, (20852), 16309 states have internal predecessors, (20852), 6875 states have call successors, (6875), 2841 states have call predecessors, (6875), 2822 states have return successors, (6909), 6663 states have call predecessors, (6909), 6871 states have call successors, (6909) [2022-12-14 06:40:47,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25775 states to 25775 states and 34636 transitions. [2022-12-14 06:40:47,800 INFO L78 Accepts]: Start accepts. Automaton has 25775 states and 34636 transitions. Word has length 460 [2022-12-14 06:40:47,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:40:47,800 INFO L495 AbstractCegarLoop]: Abstraction has 25775 states and 34636 transitions. [2022-12-14 06:40:47,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-12-14 06:40:47,800 INFO L276 IsEmpty]: Start isEmpty. Operand 25775 states and 34636 transitions. [2022-12-14 06:40:47,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2022-12-14 06:40:47,813 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:40:47,813 INFO L195 NwaCegarLoop]: trace histogram [28, 20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 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] [2022-12-14 06:40:47,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 06:40:47,813 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:40:47,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:40:47,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1122409296, now seen corresponding path program 1 times [2022-12-14 06:40:47,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:40:47,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006092204] [2022-12-14 06:40:47,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:47,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:40:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2829 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2829 trivial. 0 not checked. [2022-12-14 06:40:48,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:40:48,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006092204] [2022-12-14 06:40:48,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006092204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:40:48,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:40:48,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:40:48,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273513293] [2022-12-14 06:40:48,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:40:48,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:40:48,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:40:48,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:40:48,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:40:48,224 INFO L87 Difference]: Start difference. First operand 25775 states and 34636 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 2 states have call predecessors, (49), 1 states have call successors, (49) [2022-12-14 06:40:51,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:40:53,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:40:55,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:40:55,829 INFO L93 Difference]: Finished difference Result 51318 states and 68985 transitions. [2022-12-14 06:40:55,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:40:55,830 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), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 2 states have call predecessors, (49), 1 states have call successors, (49) Word has length 502 [2022-12-14 06:40:55,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:40:55,897 INFO L225 Difference]: With dead ends: 51318 [2022-12-14 06:40:55,897 INFO L226 Difference]: Without dead ends: 25825 [2022-12-14 06:40:55,946 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 06:40:55,946 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1 mSDsluCounter, 4636 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6185 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:40:55,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6185 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-12-14 06:40:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25825 states. [2022-12-14 06:40:57,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25825 to 25797. [2022-12-14 06:40:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25797 states, 16091 states have (on average 1.2968740289602882) internal successors, (20868), 16326 states have internal predecessors, (20868), 6875 states have call successors, (6875), 2841 states have call predecessors, (6875), 2828 states have return successors, (6920), 6668 states have call predecessors, (6920), 6871 states have call successors, (6920) [2022-12-14 06:40:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25797 states to 25797 states and 34663 transitions. [2022-12-14 06:40:57,232 INFO L78 Accepts]: Start accepts. Automaton has 25797 states and 34663 transitions. Word has length 502 [2022-12-14 06:40:57,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:40:57,232 INFO L495 AbstractCegarLoop]: Abstraction has 25797 states and 34663 transitions. [2022-12-14 06:40:57,233 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), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 2 states have call predecessors, (49), 1 states have call successors, (49) [2022-12-14 06:40:57,233 INFO L276 IsEmpty]: Start isEmpty. Operand 25797 states and 34663 transitions. [2022-12-14 06:40:57,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-12-14 06:40:57,251 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:40:57,252 INFO L195 NwaCegarLoop]: trace histogram [28, 20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 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] [2022-12-14 06:40:57,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 06:40:57,252 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:40:57,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:40:57,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1145410353, now seen corresponding path program 1 times [2022-12-14 06:40:57,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:40:57,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047150966] [2022-12-14 06:40:57,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:40:57,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:40:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:40:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2829 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 2805 trivial. 0 not checked. [2022-12-14 06:40:57,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:40:57,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047150966] [2022-12-14 06:40:57,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047150966] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:40:57,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:40:57,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:40:57,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069686344] [2022-12-14 06:40:57,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:40:57,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:40:57,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:40:57,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:40:57,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:40:57,729 INFO L87 Difference]: Start difference. First operand 25797 states and 34663 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-12-14 06:41:02,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:41:03,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:41:03,680 INFO L93 Difference]: Finished difference Result 71655 states and 96574 transitions. [2022-12-14 06:41:03,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:41:03,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 508 [2022-12-14 06:41:03,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:41:03,842 INFO L225 Difference]: With dead ends: 71655 [2022-12-14 06:41:03,842 INFO L226 Difference]: Without dead ends: 46140 [2022-12-14 06:41:03,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:41:03,922 INFO L413 NwaCegarLoop]: 2884 mSDtfsCounter, 1548 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 4406 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:41:03,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 4406 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 702 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-12-14 06:41:03,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46140 states. [2022-12-14 06:41:06,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46140 to 46049. [2022-12-14 06:41:06,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46049 states, 29211 states have (on average 1.2993392899934957) internal successors, (37955), 29519 states have internal predecessors, (37955), 11901 states have call successors, (11901), 4960 states have call predecessors, (11901), 4934 states have return successors, (12009), 11638 states have call predecessors, (12009), 11897 states have call successors, (12009) [2022-12-14 06:41:06,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46049 states to 46049 states and 61865 transitions. [2022-12-14 06:41:06,448 INFO L78 Accepts]: Start accepts. Automaton has 46049 states and 61865 transitions. Word has length 508 [2022-12-14 06:41:06,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:41:06,449 INFO L495 AbstractCegarLoop]: Abstraction has 46049 states and 61865 transitions. [2022-12-14 06:41:06,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-12-14 06:41:06,449 INFO L276 IsEmpty]: Start isEmpty. Operand 46049 states and 61865 transitions. [2022-12-14 06:41:06,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2022-12-14 06:41:06,473 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:06,473 INFO L195 NwaCegarLoop]: trace histogram [30, 21, 21, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:41:06,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 06:41:06,473 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:41:06,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:06,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1863654352, now seen corresponding path program 1 times [2022-12-14 06:41:06,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:41:06,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231317490] [2022-12-14 06:41:06,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:06,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:41:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:41:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3034 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3034 trivial. 0 not checked. [2022-12-14 06:41:07,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:41:07,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231317490] [2022-12-14 06:41:07,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231317490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:41:07,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:41:07,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:41:07,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816220264] [2022-12-14 06:41:07,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:41:07,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:41:07,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:41:07,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:41:07,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:41:07,578 INFO L87 Difference]: Start difference. First operand 46049 states and 61865 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (52), 2 states have call predecessors, (52), 1 states have call successors, (52) [2022-12-14 06:41:11,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:41:13,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:41:13,559 INFO L93 Difference]: Finished difference Result 93496 states and 126088 transitions. [2022-12-14 06:41:13,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:41:13,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (52), 2 states have call predecessors, (52), 1 states have call successors, (52) Word has length 531 [2022-12-14 06:41:13,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:41:13,693 INFO L225 Difference]: With dead ends: 93496 [2022-12-14 06:41:13,693 INFO L226 Difference]: Without dead ends: 47179 [2022-12-14 06:41:13,788 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 06:41:13,788 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 154 mSDsluCounter, 2980 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:41:13,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 4546 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 771 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-12-14 06:41:13,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47179 states. [2022-12-14 06:41:16,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47179 to 47179. [2022-12-14 06:41:16,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47179 states, 30011 states have (on average 1.3016893805604612) internal successors, (39065), 30339 states have internal predecessors, (39065), 12211 states have call successors, (12211), 4980 states have call predecessors, (12211), 4954 states have return successors, (12333), 11948 states have call predecessors, (12333), 12207 states have call successors, (12333) [2022-12-14 06:41:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47179 states to 47179 states and 63609 transitions. [2022-12-14 06:41:16,525 INFO L78 Accepts]: Start accepts. Automaton has 47179 states and 63609 transitions. Word has length 531 [2022-12-14 06:41:16,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:41:16,525 INFO L495 AbstractCegarLoop]: Abstraction has 47179 states and 63609 transitions. [2022-12-14 06:41:16,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (52), 2 states have call predecessors, (52), 1 states have call successors, (52) [2022-12-14 06:41:16,525 INFO L276 IsEmpty]: Start isEmpty. Operand 47179 states and 63609 transitions. [2022-12-14 06:41:16,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2022-12-14 06:41:16,542 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:16,542 INFO L195 NwaCegarLoop]: trace histogram [30, 21, 21, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:41:16,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 06:41:16,543 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:41:16,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:16,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2120057212, now seen corresponding path program 1 times [2022-12-14 06:41:16,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:41:16,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814926387] [2022-12-14 06:41:16,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:16,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:41:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:41:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3034 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3034 trivial. 0 not checked. [2022-12-14 06:41:17,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:41:17,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814926387] [2022-12-14 06:41:17,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814926387] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:41:17,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:41:17,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 06:41:17,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986689397] [2022-12-14 06:41:17,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:41:17,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:41:17,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:41:17,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:41:17,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:41:17,881 INFO L87 Difference]: Start difference. First operand 47179 states and 63609 transitions. Second operand has 8 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 2 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (52), 3 states have call predecessors, (52), 2 states have call successors, (52) [2022-12-14 06:41:23,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:41:25,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:41:25,265 INFO L93 Difference]: Finished difference Result 50531 states and 67954 transitions. [2022-12-14 06:41:25,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:41:25,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 2 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (52), 3 states have call predecessors, (52), 2 states have call successors, (52) Word has length 532 [2022-12-14 06:41:25,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:41:25,448 INFO L225 Difference]: With dead ends: 50531 [2022-12-14 06:41:25,449 INFO L226 Difference]: Without dead ends: 50529 [2022-12-14 06:41:25,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-12-14 06:41:25,473 INFO L413 NwaCegarLoop]: 1796 mSDtfsCounter, 686 mSDsluCounter, 8153 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 179 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 9949 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:41:25,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 9949 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1527 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-12-14 06:41:25,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50529 states. [2022-12-14 06:41:28,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50529 to 50497. [2022-12-14 06:41:28,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50497 states, 32005 states have (on average 1.3000781127948757) internal successors, (41609), 32367 states have internal predecessors, (41609), 13071 states have call successors, (13071), 5440 states have call predecessors, (13071), 5418 states have return successors, (13221), 12788 states have call predecessors, (13221), 13067 states have call successors, (13221) [2022-12-14 06:41:28,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50497 states to 50497 states and 67901 transitions. [2022-12-14 06:41:28,238 INFO L78 Accepts]: Start accepts. Automaton has 50497 states and 67901 transitions. Word has length 532 [2022-12-14 06:41:28,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:41:28,238 INFO L495 AbstractCegarLoop]: Abstraction has 50497 states and 67901 transitions. [2022-12-14 06:41:28,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 2 states have call successors, (55), 3 states have call predecessors, (55), 2 states have return successors, (52), 3 states have call predecessors, (52), 2 states have call successors, (52) [2022-12-14 06:41:28,239 INFO L276 IsEmpty]: Start isEmpty. Operand 50497 states and 67901 transitions. [2022-12-14 06:41:28,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-12-14 06:41:28,261 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:28,261 INFO L195 NwaCegarLoop]: trace histogram [35, 20, 20, 20, 20, 20, 20, 14, 14, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:41:28,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 06:41:28,261 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:41:28,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:28,261 INFO L85 PathProgramCache]: Analyzing trace with hash -909488600, now seen corresponding path program 1 times [2022-12-14 06:41:28,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:41:28,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740269642] [2022-12-14 06:41:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:28,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:41:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:41:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 2746 trivial. 0 not checked. [2022-12-14 06:41:28,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:41:28,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740269642] [2022-12-14 06:41:28,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740269642] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:41:28,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:41:28,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:41:28,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639334596] [2022-12-14 06:41:28,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:41:28,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:41:28,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:41:28,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:41:28,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:41:28,692 INFO L87 Difference]: Start difference. First operand 50497 states and 67901 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2022-12-14 06:41:34,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:41:36,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:41:38,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:41:38,396 INFO L93 Difference]: Finished difference Result 123578 states and 166227 transitions. [2022-12-14 06:41:38,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:41:38,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 511 [2022-12-14 06:41:38,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:41:38,627 INFO L225 Difference]: With dead ends: 123578 [2022-12-14 06:41:38,627 INFO L226 Difference]: Without dead ends: 73363 [2022-12-14 06:41:38,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:41:38,757 INFO L413 NwaCegarLoop]: 2070 mSDtfsCounter, 1577 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 4314 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:41:38,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 4314 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-12-14 06:41:38,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73363 states. [2022-12-14 06:41:42,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73363 to 72982. [2022-12-14 06:41:42,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72982 states, 46366 states have (on average 1.3011258249579434) internal successors, (60328), 46796 states have internal predecessors, (60328), 18748 states have call successors, (18748), 7897 states have call predecessors, (18748), 7865 states have return successors, (18963), 18441 states have call predecessors, (18963), 18744 states have call successors, (18963) [2022-12-14 06:41:42,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72982 states to 72982 states and 98039 transitions. [2022-12-14 06:41:42,634 INFO L78 Accepts]: Start accepts. Automaton has 72982 states and 98039 transitions. Word has length 511 [2022-12-14 06:41:42,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:41:42,634 INFO L495 AbstractCegarLoop]: Abstraction has 72982 states and 98039 transitions. [2022-12-14 06:41:42,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2022-12-14 06:41:42,635 INFO L276 IsEmpty]: Start isEmpty. Operand 72982 states and 98039 transitions. [2022-12-14 06:41:42,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2022-12-14 06:41:42,669 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:42,669 INFO L195 NwaCegarLoop]: trace histogram [33, 22, 22, 21, 21, 21, 21, 21, 21, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:41:42,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 06:41:42,670 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:41:42,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:42,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1432652885, now seen corresponding path program 1 times [2022-12-14 06:41:42,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:41:42,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495965263] [2022-12-14 06:41:42,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:42,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:41:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:41:43,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3458 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 3415 trivial. 0 not checked. [2022-12-14 06:41:43,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:41:43,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495965263] [2022-12-14 06:41:43,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495965263] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:41:43,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:41:43,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:41:43,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684859913] [2022-12-14 06:41:43,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:41:43,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:41:43,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:41:43,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:41:43,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:41:43,039 INFO L87 Difference]: Start difference. First operand 72982 states and 98039 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-12-14 06:41:48,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:41:51,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:41:51,669 INFO L93 Difference]: Finished difference Result 156407 states and 209778 transitions. [2022-12-14 06:41:51,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:41:51,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 572 [2022-12-14 06:41:51,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:41:51,937 INFO L225 Difference]: With dead ends: 156407 [2022-12-14 06:41:51,937 INFO L226 Difference]: Without dead ends: 83707 [2022-12-14 06:41:52,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:41:52,109 INFO L413 NwaCegarLoop]: 2167 mSDtfsCounter, 776 mSDsluCounter, 3309 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 5476 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:41:52,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 5476 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1351 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-12-14 06:41:52,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83707 states. [2022-12-14 06:41:56,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83707 to 83393. [2022-12-14 06:41:56,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83393 states, 53248 states have (on average 1.3031287560096154) internal successors, (69389), 53716 states have internal predecessors, (69389), 20990 states have call successors, (20990), 9187 states have call predecessors, (20990), 9152 states have return successors, (21211), 20644 states have call predecessors, (21211), 20986 states have call successors, (21211) [2022-12-14 06:41:56,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83393 states to 83393 states and 111590 transitions. [2022-12-14 06:41:56,588 INFO L78 Accepts]: Start accepts. Automaton has 83393 states and 111590 transitions. Word has length 572 [2022-12-14 06:41:56,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:41:56,588 INFO L495 AbstractCegarLoop]: Abstraction has 83393 states and 111590 transitions. [2022-12-14 06:41:56,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-12-14 06:41:56,589 INFO L276 IsEmpty]: Start isEmpty. Operand 83393 states and 111590 transitions. [2022-12-14 06:41:56,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2022-12-14 06:41:56,622 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:56,622 INFO L195 NwaCegarLoop]: trace histogram [32, 22, 22, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:41:56,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 06:41:56,623 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:41:56,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:56,623 INFO L85 PathProgramCache]: Analyzing trace with hash -861498162, now seen corresponding path program 1 times [2022-12-14 06:41:56,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:41:56,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752723314] [2022-12-14 06:41:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:56,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:41:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:41:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3279 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 3236 trivial. 0 not checked. [2022-12-14 06:41:57,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:41:57,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752723314] [2022-12-14 06:41:57,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752723314] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:41:57,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:41:57,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:41:57,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95498915] [2022-12-14 06:41:57,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:41:57,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:41:57,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:41:57,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:41:57,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:41:57,055 INFO L87 Difference]: Start difference. First operand 83393 states and 111590 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-12-14 06:42:03,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:42:06,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:06,254 INFO L93 Difference]: Finished difference Result 191898 states and 257082 transitions. [2022-12-14 06:42:06,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:42:06,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 573 [2022-12-14 06:42:06,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:06,616 INFO L225 Difference]: With dead ends: 191898 [2022-12-14 06:42:06,616 INFO L226 Difference]: Without dead ends: 108787 [2022-12-14 06:42:06,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:42:06,820 INFO L413 NwaCegarLoop]: 2868 mSDtfsCounter, 1488 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 4395 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:06,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 4395 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 697 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-12-14 06:42:06,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108787 states. [2022-12-14 06:42:12,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108787 to 108721. [2022-12-14 06:42:12,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108721 states, 69633 states have (on average 1.303448077779214) internal successors, (90763), 70200 states have internal predecessors, (90763), 27210 states have call successors, (27210), 11924 states have call predecessors, (27210), 11875 states have return successors, (27516), 26796 states have call predecessors, (27516), 27206 states have call successors, (27516) [2022-12-14 06:42:12,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108721 states to 108721 states and 145489 transitions. [2022-12-14 06:42:12,965 INFO L78 Accepts]: Start accepts. Automaton has 108721 states and 145489 transitions. Word has length 573 [2022-12-14 06:42:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:12,966 INFO L495 AbstractCegarLoop]: Abstraction has 108721 states and 145489 transitions. [2022-12-14 06:42:12,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-12-14 06:42:12,966 INFO L276 IsEmpty]: Start isEmpty. Operand 108721 states and 145489 transitions. [2022-12-14 06:42:13,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2022-12-14 06:42:13,006 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:13,006 INFO L195 NwaCegarLoop]: trace histogram [36, 20, 20, 20, 20, 20, 20, 15, 15, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:42:13,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 06:42:13,007 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:42:13,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:13,007 INFO L85 PathProgramCache]: Analyzing trace with hash 855286258, now seen corresponding path program 1 times [2022-12-14 06:42:13,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:42:13,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824551165] [2022-12-14 06:42:13,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:13,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:42:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 2914 trivial. 0 not checked. [2022-12-14 06:42:13,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:42:13,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824551165] [2022-12-14 06:42:13,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824551165] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:13,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:13,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:42:13,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046030921] [2022-12-14 06:42:13,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:13,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:42:13,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:42:13,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:42:13,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:42:13,315 INFO L87 Difference]: Start difference. First operand 108721 states and 145489 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 4 states have call predecessors, (57), 3 states have call successors, (57) [2022-12-14 06:42:21,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:42:23,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:42:25,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:42:29,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:42:31,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:42:33,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:42:35,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:35,383 INFO L93 Difference]: Finished difference Result 237549 states and 317966 transitions. [2022-12-14 06:42:35,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:42:35,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 4 states have call predecessors, (57), 3 states have call successors, (57) Word has length 530 [2022-12-14 06:42:35,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:35,799 INFO L225 Difference]: With dead ends: 237549 [2022-12-14 06:42:35,800 INFO L226 Difference]: Without dead ends: 129110 [2022-12-14 06:42:36,052 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 06:42:36,052 INFO L413 NwaCegarLoop]: 2950 mSDtfsCounter, 1614 mSDsluCounter, 7425 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 10375 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:36,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1614 Valid, 10375 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1628 Invalid, 4 Unknown, 0 Unchecked, 15.0s Time] [2022-12-14 06:42:36,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129110 states. [2022-12-14 06:42:42,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129110 to 128824. [2022-12-14 06:42:42,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128824 states, 82525 states have (on average 1.3042714328991214) internal successors, (107635), 83203 states have internal predecessors, (107635), 32209 states have call successors, (32209), 14100 states have call predecessors, (32209), 14087 states have return successors, (32611), 31758 states have call predecessors, (32611), 32205 states have call successors, (32611) [2022-12-14 06:42:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128824 states to 128824 states and 172455 transitions. [2022-12-14 06:42:42,901 INFO L78 Accepts]: Start accepts. Automaton has 128824 states and 172455 transitions. Word has length 530 [2022-12-14 06:42:42,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:42,902 INFO L495 AbstractCegarLoop]: Abstraction has 128824 states and 172455 transitions. [2022-12-14 06:42:42,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 4 states have call predecessors, (57), 3 states have call successors, (57) [2022-12-14 06:42:42,902 INFO L276 IsEmpty]: Start isEmpty. Operand 128824 states and 172455 transitions. [2022-12-14 06:42:42,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2022-12-14 06:42:42,947 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:42,947 INFO L195 NwaCegarLoop]: trace histogram [36, 20, 20, 20, 20, 20, 20, 15, 15, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:42:42,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 06:42:42,947 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:42:42,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:42,948 INFO L85 PathProgramCache]: Analyzing trace with hash 605918322, now seen corresponding path program 1 times [2022-12-14 06:42:42,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:42:42,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692620004] [2022-12-14 06:42:42,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:42,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:42:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 2914 trivial. 0 not checked. [2022-12-14 06:42:43,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:42:43,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692620004] [2022-12-14 06:42:43,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692620004] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:43,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:43,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:42:43,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352042656] [2022-12-14 06:42:43,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:43,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:42:43,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:42:43,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:42:43,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:42:43,346 INFO L87 Difference]: Start difference. First operand 128824 states and 172455 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 4 states have call predecessors, (57), 3 states have call successors, (57) [2022-12-14 06:42:50,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:42:52,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:42:54,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:43:00,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:43:02,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:43:05,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:43:05,210 INFO L93 Difference]: Finished difference Result 277835 states and 372058 transitions. [2022-12-14 06:43:05,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:43:05,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 4 states have call predecessors, (57), 3 states have call successors, (57) Word has length 531 [2022-12-14 06:43:05,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:43:05,767 INFO L225 Difference]: With dead ends: 277835 [2022-12-14 06:43:05,768 INFO L226 Difference]: Without dead ends: 149293 [2022-12-14 06:43:06,088 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 06:43:06,089 INFO L413 NwaCegarLoop]: 2954 mSDtfsCounter, 1614 mSDsluCounter, 7433 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 10387 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:43:06,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1614 Valid, 10387 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1635 Invalid, 4 Unknown, 0 Unchecked, 14.4s Time] [2022-12-14 06:43:06,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149293 states. [2022-12-14 06:43:13,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149293 to 149007. [2022-12-14 06:43:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149007 states, 95497 states have (on average 1.3046168989601767) internal successors, (124587), 96286 states have internal predecessors, (124587), 37208 states have call successors, (37208), 16276 states have call predecessors, (37208), 16299 states have return successors, (37706), 36720 states have call predecessors, (37706), 37204 states have call successors, (37706) [2022-12-14 06:43:14,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149007 states to 149007 states and 199501 transitions. [2022-12-14 06:43:14,445 INFO L78 Accepts]: Start accepts. Automaton has 149007 states and 199501 transitions. Word has length 531 [2022-12-14 06:43:14,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:43:14,445 INFO L495 AbstractCegarLoop]: Abstraction has 149007 states and 199501 transitions. [2022-12-14 06:43:14,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 4 states have call predecessors, (57), 3 states have call successors, (57) [2022-12-14 06:43:14,446 INFO L276 IsEmpty]: Start isEmpty. Operand 149007 states and 199501 transitions. [2022-12-14 06:43:14,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2022-12-14 06:43:14,495 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:43:14,495 INFO L195 NwaCegarLoop]: trace histogram [36, 20, 20, 20, 20, 20, 20, 15, 15, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:43:14,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-14 06:43:14,496 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:43:14,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:43:14,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1731373359, now seen corresponding path program 1 times [2022-12-14 06:43:14,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:43:14,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306000889] [2022-12-14 06:43:14,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:43:14,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:43:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:43:15,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-12-14 06:43:15,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:43:15,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306000889] [2022-12-14 06:43:15,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306000889] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:43:15,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:43:15,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 06:43:15,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055057428] [2022-12-14 06:43:15,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:43:15,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:43:15,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:43:15,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:43:15,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:43:15,538 INFO L87 Difference]: Start difference. First operand 149007 states and 199501 transitions. Second operand has 8 states, 7 states have (on average 18.428571428571427) internal successors, (129), 6 states have internal predecessors, (129), 2 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (56), 2 states have call predecessors, (56), 1 states have call successors, (56) [2022-12-14 06:43:24,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:43:26,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:43:28,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:43:30,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:43:34,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:43:36,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:43:39,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:43:39,410 INFO L93 Difference]: Finished difference Result 156065 states and 207970 transitions. [2022-12-14 06:43:39,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:43:39,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 18.428571428571427) internal successors, (129), 6 states have internal predecessors, (129), 2 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (56), 2 states have call predecessors, (56), 1 states have call successors, (56) Word has length 532 [2022-12-14 06:43:39,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:43:39,913 INFO L225 Difference]: With dead ends: 156065 [2022-12-14 06:43:39,913 INFO L226 Difference]: Without dead ends: 156063 [2022-12-14 06:43:39,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-12-14 06:43:39,978 INFO L413 NwaCegarLoop]: 1875 mSDtfsCounter, 1394 mSDsluCounter, 8276 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 10151 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:43:39,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 10151 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time] [2022-12-14 06:43:40,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156063 states. [2022-12-14 06:43:47,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156063 to 155853. [2022-12-14 06:43:47,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155853 states, 99466 states have (on average 1.3007861982989162) internal successors, (129384), 100292 states have internal predecessors, (129384), 38896 states have call successors, (38896), 17416 states have call predecessors, (38896), 17488 states have return successors, (39433), 38420 states have call predecessors, (39433), 38892 states have call successors, (39433) [2022-12-14 06:43:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155853 states to 155853 states and 207713 transitions. [2022-12-14 06:43:48,297 INFO L78 Accepts]: Start accepts. Automaton has 155853 states and 207713 transitions. Word has length 532 [2022-12-14 06:43:48,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:43:48,297 INFO L495 AbstractCegarLoop]: Abstraction has 155853 states and 207713 transitions. [2022-12-14 06:43:48,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 18.428571428571427) internal successors, (129), 6 states have internal predecessors, (129), 2 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (56), 2 states have call predecessors, (56), 1 states have call successors, (56) [2022-12-14 06:43:48,298 INFO L276 IsEmpty]: Start isEmpty. Operand 155853 states and 207713 transitions. [2022-12-14 06:43:48,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2022-12-14 06:43:48,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:43:48,489 INFO L195 NwaCegarLoop]: trace histogram [33, 23, 23, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:43:48,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-14 06:43:48,489 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:43:48,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:43:48,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1996217019, now seen corresponding path program 1 times [2022-12-14 06:43:48,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:43:48,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223178259] [2022-12-14 06:43:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:43:48,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:43:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:43:48,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3453 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 3398 trivial. 0 not checked. [2022-12-14 06:43:48,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:43:48,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223178259] [2022-12-14 06:43:48,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223178259] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:43:48,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:43:48,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:43:48,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257864369] [2022-12-14 06:43:48,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:43:48,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:43:48,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:43:48,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:43:48,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:43:48,894 INFO L87 Difference]: Start difference. First operand 155853 states and 207713 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-12-14 06:43:56,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:43:57,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:43:59,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:44:04,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:44:04,814 INFO L93 Difference]: Finished difference Result 348173 states and 464241 transitions. [2022-12-14 06:44:04,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:44:04,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 591 [2022-12-14 06:44:04,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:44:05,623 INFO L225 Difference]: With dead ends: 348173 [2022-12-14 06:44:05,623 INFO L226 Difference]: Without dead ends: 192602 [2022-12-14 06:44:06,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:44:06,023 INFO L413 NwaCegarLoop]: 2879 mSDtfsCounter, 1497 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 4406 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:44:06,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 4406 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-12-14 06:44:06,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192602 states. [2022-12-14 06:44:15,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192602 to 192570. [2022-12-14 06:44:15,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192570 states, 123022 states have (on average 1.300694184779958) internal successors, (160014), 123976 states have internal predecessors, (160014), 47919 states have call successors, (47919), 21537 states have call predecessors, (47919), 21626 states have return successors, (48568), 47395 states have call predecessors, (48568), 47915 states have call successors, (48568) [2022-12-14 06:44:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192570 states to 192570 states and 256501 transitions. [2022-12-14 06:44:16,373 INFO L78 Accepts]: Start accepts. Automaton has 192570 states and 256501 transitions. Word has length 591 [2022-12-14 06:44:16,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:44:16,374 INFO L495 AbstractCegarLoop]: Abstraction has 192570 states and 256501 transitions. [2022-12-14 06:44:16,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-12-14 06:44:16,374 INFO L276 IsEmpty]: Start isEmpty. Operand 192570 states and 256501 transitions. [2022-12-14 06:44:16,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2022-12-14 06:44:16,447 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:44:16,448 INFO L195 NwaCegarLoop]: trace histogram [35, 23, 23, 21, 21, 21, 21, 21, 21, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:44:16,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-14 06:44:16,448 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:44:16,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:44:16,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1459395756, now seen corresponding path program 1 times [2022-12-14 06:44:16,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:44:16,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310927413] [2022-12-14 06:44:16,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:44:16,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:44:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:44:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3711 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 3653 trivial. 0 not checked. [2022-12-14 06:44:16,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:44:16,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310927413] [2022-12-14 06:44:16,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310927413] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:44:16,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:44:16,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:44:16,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790545405] [2022-12-14 06:44:16,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:44:16,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:44:16,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:44:16,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:44:16,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:44:16,808 INFO L87 Difference]: Start difference. First operand 192570 states and 256501 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2022-12-14 06:44:24,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:44:26,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:44:28,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:44:33,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:44:35,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:44:36,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:44:41,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:44:41,166 INFO L93 Difference]: Finished difference Result 407474 states and 541168 transitions. [2022-12-14 06:44:41,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:44:41,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) Word has length 603 [2022-12-14 06:44:41,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:44:41,993 INFO L225 Difference]: With dead ends: 407474 [2022-12-14 06:44:41,993 INFO L226 Difference]: Without dead ends: 215186 [2022-12-14 06:44:42,584 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 06:44:42,584 INFO L413 NwaCegarLoop]: 2348 mSDtfsCounter, 1015 mSDsluCounter, 6182 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 8530 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:44:42,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 8530 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1399 Invalid, 1 Unknown, 0 Unchecked, 13.2s Time] [2022-12-14 06:44:42,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215186 states. [2022-12-14 06:44:54,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215186 to 214834. [2022-12-14 06:44:54,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214834 states, 137277 states have (on average 1.2968159269214798) internal successors, (178023), 138314 states have internal predecessors, (178023), 52881 states have call successors, (52881), 24529 states have call predecessors, (52881), 24673 states have return successors, (53635), 52343 states have call predecessors, (53635), 52877 states have call successors, (53635) [2022-12-14 06:44:55,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214834 states to 214834 states and 284539 transitions. [2022-12-14 06:44:55,049 INFO L78 Accepts]: Start accepts. Automaton has 214834 states and 284539 transitions. Word has length 603 [2022-12-14 06:44:55,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:44:55,049 INFO L495 AbstractCegarLoop]: Abstraction has 214834 states and 284539 transitions. [2022-12-14 06:44:55,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (58), 4 states have call predecessors, (58), 3 states have call successors, (58) [2022-12-14 06:44:55,050 INFO L276 IsEmpty]: Start isEmpty. Operand 214834 states and 284539 transitions. [2022-12-14 06:44:55,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2022-12-14 06:44:55,125 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:44:55,126 INFO L195 NwaCegarLoop]: trace histogram [35, 23, 23, 21, 21, 21, 21, 21, 21, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:44:55,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-14 06:44:55,126 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:44:55,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:44:55,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1955844471, now seen corresponding path program 1 times [2022-12-14 06:44:55,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:44:55,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712758054] [2022-12-14 06:44:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:44:55,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:44:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:44:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3715 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3706 trivial. 0 not checked. [2022-12-14 06:44:56,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:44:56,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712758054] [2022-12-14 06:44:56,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712758054] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:44:56,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613743745] [2022-12-14 06:44:56,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:44:56,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:44:56,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:44:56,718 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:44:56,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 06:44:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:44:57,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 4805 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-14 06:44:57,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:44:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3715 backedges. 1057 proven. 0 refuted. 0 times theorem prover too weak. 2658 trivial. 0 not checked. [2022-12-14 06:44:57,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:44:57,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613743745] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:44:57,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 06:44:57,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2022-12-14 06:44:57,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869161227] [2022-12-14 06:44:57,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:44:57,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 06:44:57,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:44:57,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 06:44:57,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-12-14 06:44:57,726 INFO L87 Difference]: Start difference. First operand 214834 states and 284539 transitions. Second operand has 11 states, 8 states have (on average 18.0) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (59), 3 states have call predecessors, (59), 5 states have return successors, (59), 6 states have call predecessors, (59), 6 states have call successors, (59) [2022-12-14 06:45:14,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:45:15,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:45:17,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:45:20,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:45:25,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:45:28,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:45:30,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:45:31,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:45:33,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:45:35,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:45:43,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:45:43,689 INFO L93 Difference]: Finished difference Result 472268 states and 625029 transitions. [2022-12-14 06:45:43,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 06:45:43,690 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 18.0) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (59), 3 states have call predecessors, (59), 5 states have return successors, (59), 6 states have call predecessors, (59), 6 states have call successors, (59) Word has length 596 [2022-12-14 06:45:43,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:45:44,624 INFO L225 Difference]: With dead ends: 472268 [2022-12-14 06:45:44,624 INFO L226 Difference]: Without dead ends: 257351 [2022-12-14 06:45:45,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2022-12-14 06:45:45,175 INFO L413 NwaCegarLoop]: 2760 mSDtfsCounter, 2549 mSDsluCounter, 20153 mSDsCounter, 0 mSdLazyCounter, 5662 mSolverCounterSat, 567 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2567 SdHoareTripleChecker+Valid, 22913 SdHoareTripleChecker+Invalid, 6232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 5662 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:45:45,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2567 Valid, 22913 Invalid, 6232 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [567 Valid, 5662 Invalid, 3 Unknown, 0 Unchecked, 31.9s Time] [2022-12-14 06:45:45,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257351 states. [2022-12-14 06:45:58,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257351 to 257197. [2022-12-14 06:45:59,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257197 states, 164522 states have (on average 1.2947690886325234) internal successors, (213018), 165731 states have internal predecessors, (213018), 63084 states have call successors, (63084), 29416 states have call predecessors, (63084), 29588 states have return successors, (63971), 62465 states have call predecessors, (63971), 63080 states have call successors, (63971) [2022-12-14 06:46:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257197 states to 257197 states and 340073 transitions. [2022-12-14 06:46:00,161 INFO L78 Accepts]: Start accepts. Automaton has 257197 states and 340073 transitions. Word has length 596 [2022-12-14 06:46:00,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:46:00,162 INFO L495 AbstractCegarLoop]: Abstraction has 257197 states and 340073 transitions. [2022-12-14 06:46:00,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 18.0) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (59), 3 states have call predecessors, (59), 5 states have return successors, (59), 6 states have call predecessors, (59), 6 states have call successors, (59) [2022-12-14 06:46:00,162 INFO L276 IsEmpty]: Start isEmpty. Operand 257197 states and 340073 transitions. [2022-12-14 06:46:00,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2022-12-14 06:46:00,246 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:46:00,247 INFO L195 NwaCegarLoop]: trace histogram [36, 23, 23, 21, 21, 21, 21, 21, 21, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:46:00,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:46:00,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-14 06:46:00,449 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:46:00,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:46:00,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1119156428, now seen corresponding path program 1 times [2022-12-14 06:46:00,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:46:00,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052846074] [2022-12-14 06:46:00,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:46:00,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:46:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:46:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3795 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 3751 trivial. 0 not checked. [2022-12-14 06:46:01,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:46:01,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052846074] [2022-12-14 06:46:01,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052846074] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:46:01,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:46:01,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:46:01,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019685201] [2022-12-14 06:46:01,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:46:01,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:46:01,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:46:01,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:46:01,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:46:01,051 INFO L87 Difference]: Start difference. First operand 257197 states and 340073 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-12-14 06:46:10,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:46:12,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:46:29,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:46:29,128 INFO L93 Difference]: Finished difference Result 611828 states and 829382 transitions. [2022-12-14 06:46:29,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:46:29,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 618 [2022-12-14 06:46:29,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:46:30,787 INFO L225 Difference]: With dead ends: 611828 [2022-12-14 06:46:30,787 INFO L226 Difference]: Without dead ends: 354913 [2022-12-14 06:46:31,532 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 06:46:31,533 INFO L413 NwaCegarLoop]: 1911 mSDtfsCounter, 1209 mSDsluCounter, 3519 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 311 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 5430 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:46:31,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 5430 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 805 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-12-14 06:46:31,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354913 states. [2022-12-14 06:46:48,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354913 to 257365. [2022-12-14 06:46:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257365 states, 164690 states have (on average 1.2944683951666769) internal successors, (213186), 165899 states have internal predecessors, (213186), 63084 states have call successors, (63084), 29416 states have call predecessors, (63084), 29588 states have return successors, (63971), 62465 states have call predecessors, (63971), 63080 states have call successors, (63971) [2022-12-14 06:46:49,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257365 states to 257365 states and 340241 transitions. [2022-12-14 06:46:49,567 INFO L78 Accepts]: Start accepts. Automaton has 257365 states and 340241 transitions. Word has length 618 [2022-12-14 06:46:49,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:46:49,567 INFO L495 AbstractCegarLoop]: Abstraction has 257365 states and 340241 transitions. [2022-12-14 06:46:49,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-12-14 06:46:49,568 INFO L276 IsEmpty]: Start isEmpty. Operand 257365 states and 340241 transitions. [2022-12-14 06:46:49,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2022-12-14 06:46:49,653 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:46:49,653 INFO L195 NwaCegarLoop]: trace histogram [36, 23, 23, 21, 21, 21, 21, 21, 21, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:46:49,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-14 06:46:49,654 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:46:49,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:46:49,654 INFO L85 PathProgramCache]: Analyzing trace with hash -639933632, now seen corresponding path program 1 times [2022-12-14 06:46:49,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:46:49,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589113642] [2022-12-14 06:46:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:46:49,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:46:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:46:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 44 proven. 4 refuted. 0 times theorem prover too weak. 3749 trivial. 0 not checked. [2022-12-14 06:46:51,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:46:51,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589113642] [2022-12-14 06:46:51,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589113642] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:46:51,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118886171] [2022-12-14 06:46:51,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:46:51,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:46:51,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:46:51,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:46:51,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 06:46:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:46:52,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 5072 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-14 06:46:52,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:46:52,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 1085 proven. 0 refuted. 0 times theorem prover too weak. 2712 trivial. 0 not checked. [2022-12-14 06:46:52,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:46:52,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118886171] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:46:52,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 06:46:52,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2022-12-14 06:46:52,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931389484] [2022-12-14 06:46:52,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:46:52,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 06:46:52,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:46:52,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 06:46:52,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2022-12-14 06:46:52,316 INFO L87 Difference]: Start difference. First operand 257365 states and 340241 transitions. Second operand has 11 states, 8 states have (on average 19.25) internal successors, (154), 10 states have internal predecessors, (154), 6 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (63), 6 states have call predecessors, (63), 6 states have call successors, (63) [2022-12-14 06:47:10,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:47:24,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:47:24,643 INFO L93 Difference]: Finished difference Result 556926 states and 735984 transitions. [2022-12-14 06:47:24,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 06:47:24,644 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 19.25) internal successors, (154), 10 states have internal predecessors, (154), 6 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (63), 6 states have call predecessors, (63), 6 states have call successors, (63) Word has length 626 [2022-12-14 06:47:24,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:47:25,890 INFO L225 Difference]: With dead ends: 556926 [2022-12-14 06:47:25,890 INFO L226 Difference]: Without dead ends: 299464 [2022-12-14 06:47:26,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2022-12-14 06:47:26,641 INFO L413 NwaCegarLoop]: 2748 mSDtfsCounter, 2540 mSDsluCounter, 18559 mSDsCounter, 0 mSdLazyCounter, 5373 mSolverCounterSat, 568 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2560 SdHoareTripleChecker+Valid, 21307 SdHoareTripleChecker+Invalid, 5942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 5373 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:47:26,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2560 Valid, 21307 Invalid, 5942 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [568 Valid, 5373 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-12-14 06:47:26,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299464 states. [2022-12-14 06:47:46,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299464 to 295065. [2022-12-14 06:47:46,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295065 states, 189025 states have (on average 1.294156857558524) internal successors, (244628), 190421 states have internal predecessors, (244628), 72169 states have call successors, (72169), 33676 states have call predecessors, (72169), 33868 states have return successors, (73217), 71446 states have call predecessors, (73217), 72165 states have call successors, (73217) [2022-12-14 06:47:47,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295065 states to 295065 states and 390014 transitions. [2022-12-14 06:47:47,716 INFO L78 Accepts]: Start accepts. Automaton has 295065 states and 390014 transitions. Word has length 626 [2022-12-14 06:47:47,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:47:47,716 INFO L495 AbstractCegarLoop]: Abstraction has 295065 states and 390014 transitions. [2022-12-14 06:47:47,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 19.25) internal successors, (154), 10 states have internal predecessors, (154), 6 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (63), 6 states have call predecessors, (63), 6 states have call successors, (63) [2022-12-14 06:47:47,716 INFO L276 IsEmpty]: Start isEmpty. Operand 295065 states and 390014 transitions. [2022-12-14 06:47:48,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2022-12-14 06:47:48,002 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:47:48,002 INFO L195 NwaCegarLoop]: trace histogram [42, 27, 27, 27, 27, 27, 27, 25, 25, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-14 06:47:48,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 06:47:48,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-12-14 06:47:48,205 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-14 06:47:48,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:47:48,206 INFO L85 PathProgramCache]: Analyzing trace with hash -850016531, now seen corresponding path program 1 times [2022-12-14 06:47:48,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:47:48,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759026234] [2022-12-14 06:47:48,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:47:48,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:47:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:47:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5286 backedges. 44 proven. 4 refuted. 0 times theorem prover too weak. 5238 trivial. 0 not checked. [2022-12-14 06:47:50,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:47:50,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759026234] [2022-12-14 06:47:50,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759026234] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:47:50,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436682489] [2022-12-14 06:47:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:47:50,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:47:50,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:47:50,417 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:47:50,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa70013a-f2d0-4888-bd5a-a4041228781c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 06:47:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:47:51,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 5908 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-14 06:47:51,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:47:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5286 backedges. 1765 proven. 693 refuted. 0 times theorem prover too weak. 2828 trivial. 0 not checked. [2022-12-14 06:47:52,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:47:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5286 backedges. 85 proven. 1 refuted. 0 times theorem prover too weak. 5200 trivial. 0 not checked. [2022-12-14 06:47:52,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436682489] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:47:52,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2034105776] [2022-12-14 06:47:52,927 INFO L159 IcfgInterpreter]: Started Sifa with 224 locations of interest [2022-12-14 06:47:52,928 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:47:52,931 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:47:52,936 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:47:52,936 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs