./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS --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 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 --- 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-8393723 [2022-11-19 07:49:25,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:49:25,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:49:25,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:49:25,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:49:25,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:49:25,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:49:25,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:49:25,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:49:25,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:49:25,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:49:25,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:49:25,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:49:25,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:49:25,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:49:25,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:49:25,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:49:25,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:49:25,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:49:25,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:49:25,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:49:25,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:49:25,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:49:25,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:49:25,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:49:25,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:49:25,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:49:25,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:49:25,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:49:25,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:49:25,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:49:25,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:49:25,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:49:25,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:49:25,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:49:25,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:49:25,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:49:25,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:49:25,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:49:25,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:49:25,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:49:25,540 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:49:25,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:49:25,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:49:25,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:49:25,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:49:25,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:49:25,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:49:25,567 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:49:25,567 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:49:25,567 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:49:25,568 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:49:25,568 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:49:25,568 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:49:25,568 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:49:25,569 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:49:25,569 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:49:25,569 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:49:25,569 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:49:25,570 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:49:25,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:49:25,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:49:25,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:49:25,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:49:25,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:49:25,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:49:25,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:49:25,572 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:49:25,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:49:25,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:49:25,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:49:25,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:49:25,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:49:25,574 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:49:25,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:49:25,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:49:25,574 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:49:25,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:49:25,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:49:25,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:49:25,575 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 [2022-11-19 07:49:25,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:49:25,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:49:25,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:49:25,902 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:49:25,903 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:49:25,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2022-11-19 07:49:25,998 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/data/4099267e9/b5b5c448c8b5406890c4ed2bd0547992/FLAGc79c9e6a2 [2022-11-19 07:49:26,918 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:49:26,918 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2022-11-19 07:49:26,979 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/data/4099267e9/b5b5c448c8b5406890c4ed2bd0547992/FLAGc79c9e6a2 [2022-11-19 07:49:27,317 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/data/4099267e9/b5b5c448c8b5406890c4ed2bd0547992 [2022-11-19 07:49:27,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:49:27,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:49:27,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:49:27,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:49:27,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:49:27,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:27" (1/1) ... [2022-11-19 07:49:27,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f24885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:27, skipping insertion in model container [2022-11-19 07:49:27,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:27" (1/1) ... [2022-11-19 07:49:27,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:49:27,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:49:30,210 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2022-11-19 07:49:30,217 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2022-11-19 07:49:30,218 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2022-11-19 07:49:30,219 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2022-11-19 07:49:30,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:49:30,276 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:49:30,709 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2022-11-19 07:49:30,710 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2022-11-19 07:49:30,711 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2022-11-19 07:49:30,711 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2022-11-19 07:49:30,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:49:30,861 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:49:30,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:30 WrapperNode [2022-11-19 07:49:30,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:49:30,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:49:30,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:49:30,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:49:30,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:30" (1/1) ... [2022-11-19 07:49:30,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:30" (1/1) ... [2022-11-19 07:49:31,218 INFO L138 Inliner]: procedures = 418, calls = 1993, calls flagged for inlining = 195, calls inlined = 179, statements flattened = 5259 [2022-11-19 07:49:31,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:49:31,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:49:31,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:49:31,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:49:31,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:30" (1/1) ... [2022-11-19 07:49:31,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:30" (1/1) ... [2022-11-19 07:49:31,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:30" (1/1) ... [2022-11-19 07:49:31,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:30" (1/1) ... [2022-11-19 07:49:31,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:30" (1/1) ... [2022-11-19 07:49:31,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:30" (1/1) ... [2022-11-19 07:49:31,457 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:30" (1/1) ... [2022-11-19 07:49:31,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:30" (1/1) ... [2022-11-19 07:49:31,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:49:31,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:49:31,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:49:31,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:49:31,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:30" (1/1) ... [2022-11-19 07:49:31,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:49:31,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:31,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:49:31,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:49:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2022-11-19 07:49:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2022-11-19 07:49:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 07:49:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 07:49:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:49:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:49:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 07:49:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 07:49:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:49:31,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:49:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure fst_remove_one [2022-11-19 07:49:31,583 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_remove_one [2022-11-19 07:49:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 07:49:31,583 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 07:49:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 07:49:31,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 07:49:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-19 07:49:31,584 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-19 07:49:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-19 07:49:31,584 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-19 07:49:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2022-11-19 07:49:31,585 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2022-11-19 07:49:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-11-19 07:49:31,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-11-19 07:49:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_67 [2022-11-19 07:49:31,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_67 [2022-11-19 07:49:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:49:31,586 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:49:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure fst_close [2022-11-19 07:49:31,586 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_close [2022-11-19 07:49:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 07:49:31,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 07:49:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-19 07:49:31,587 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-19 07:49:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 07:49:31,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 07:49:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure fst_tx_timeout [2022-11-19 07:49:31,588 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_tx_timeout [2022-11-19 07:49:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 07:49:31,588 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 07:49:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:49:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-19 07:49:31,590 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-19 07:49:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure fst_open [2022-11-19 07:49:31,591 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_open [2022-11-19 07:49:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_type_trans [2022-11-19 07:49:31,591 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_type_trans [2022-11-19 07:49:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:49:31,591 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:49:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:49:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-19 07:49:31,592 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-19 07:49:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 07:49:31,592 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 07:49:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 07:49:31,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 07:49:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:49:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 07:49:31,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 07:49:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:49:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-11-19 07:49:31,594 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-11-19 07:49:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:49:31,594 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:49:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure fst_issue_cmd [2022-11-19 07:49:31,594 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_issue_cmd [2022-11-19 07:49:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 07:49:31,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 07:49:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 07:49:31,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 07:49:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-19 07:49:31,595 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-19 07:49:31,595 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 07:49:31,596 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 07:49:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-19 07:49:31,596 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-19 07:49:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 07:49:31,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 07:49:31,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:49:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 07:49:31,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 07:49:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-19 07:49:31,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-19 07:49:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_card_lock_of_fst_card_info [2022-11-19 07:49:31,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_card_lock_of_fst_card_info [2022-11-19 07:49:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:49:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure fst_cpureset [2022-11-19 07:49:31,598 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_cpureset [2022-11-19 07:49:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 07:49:31,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 07:49:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:49:31,599 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:49:31,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:49:31,599 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-19 07:49:31,599 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-19 07:49:31,599 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:49:31,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:49:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-19 07:49:31,600 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-19 07:49:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure fst_q_work_item [2022-11-19 07:49:31,600 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_q_work_item [2022-11-19 07:49:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-19 07:49:31,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-19 07:49:31,601 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:49:31,601 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:49:31,601 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-19 07:49:31,601 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-19 07:49:31,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 07:49:31,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 07:49:31,602 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-19 07:49:31,602 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-19 07:49:31,602 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-19 07:49:31,602 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-19 07:49:31,602 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2022-11-19 07:49:31,603 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2022-11-19 07:49:31,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:49:31,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:49:31,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:49:31,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:49:31,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:49:31,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:49:31,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 07:49:31,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 07:49:31,604 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 07:49:31,604 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 07:49:31,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:49:31,604 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:49:31,605 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 07:49:31,605 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 07:49:31,605 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-19 07:49:31,605 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-19 07:49:31,605 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 07:49:31,605 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 07:49:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:49:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-19 07:49:31,606 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-19 07:49:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:49:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2022-11-19 07:49:31,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2022-11-19 07:49:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:49:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-19 07:49:31,607 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-19 07:49:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-19 07:49:31,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-19 07:49:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-19 07:49:31,607 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-19 07:49:31,608 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-19 07:49:31,608 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-19 07:49:31,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 07:49:31,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 07:49:31,608 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-19 07:49:31,608 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-19 07:49:31,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-19 07:49:31,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-19 07:49:31,609 INFO L130 BoogieDeclarations]: Found specification of procedure farsync_type_trans [2022-11-19 07:49:31,609 INFO L138 BoogieDeclarations]: Found implementation of procedure farsync_type_trans [2022-11-19 07:49:31,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 07:49:31,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 07:49:31,609 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:49:31,609 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:49:31,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_fst_work_q_lock [2022-11-19 07:49:31,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_fst_work_q_lock [2022-11-19 07:49:31,610 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:49:31,610 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:49:31,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:49:31,610 INFO L130 BoogieDeclarations]: Found specification of procedure fst_disable_intr [2022-11-19 07:49:31,611 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_disable_intr [2022-11-19 07:49:31,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:49:31,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:49:31,611 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 07:49:31,611 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 07:49:31,611 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-19 07:49:31,659 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-19 07:49:31,659 INFO L130 BoogieDeclarations]: Found specification of procedure do_bottom_half_tx [2022-11-19 07:49:31,660 INFO L138 BoogieDeclarations]: Found implementation of procedure do_bottom_half_tx [2022-11-19 07:49:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure fst_process_rx_status [2022-11-19 07:49:31,660 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_process_rx_status [2022-11-19 07:49:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 07:49:31,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 07:49:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2022-11-19 07:49:31,660 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2022-11-19 07:49:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2022-11-19 07:49:31,661 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2022-11-19 07:49:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-19 07:49:31,661 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-19 07:49:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-19 07:49:31,661 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-19 07:49:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-19 07:49:31,661 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-19 07:49:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure fst_clear_intr [2022-11-19 07:49:31,662 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_clear_intr [2022-11-19 07:49:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:49:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2022-11-19 07:49:31,662 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2022-11-19 07:49:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 07:49:31,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 07:49:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-19 07:49:31,662 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-19 07:49:32,492 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:49:32,502 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:49:32,627 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:49:37,250 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 07:49:37,436 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:49:38,646 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:49:38,646 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:49:38,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:38 BoogieIcfgContainer [2022-11-19 07:49:38,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:49:38,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:49:38,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:49:38,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:49:38,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:49:27" (1/3) ... [2022-11-19 07:49:38,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fa32a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:38, skipping insertion in model container [2022-11-19 07:49:38,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:30" (2/3) ... [2022-11-19 07:49:38,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fa32a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:38, skipping insertion in model container [2022-11-19 07:49:38,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:38" (3/3) ... [2022-11-19 07:49:38,670 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2022-11-19 07:49:38,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:49:38,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 07:49:38,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:49:38,777 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;@32d23bd3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:49:38,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 07:49:38,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 1429 states, 848 states have (on average 1.3113207547169812) internal successors, (1112), 862 states have internal predecessors, (1112), 488 states have call successors, (488), 91 states have call predecessors, (488), 90 states have return successors, (481), 479 states have call predecessors, (481), 481 states have call successors, (481) [2022-11-19 07:49:38,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-19 07:49:38,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:38,803 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:38,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:49:38,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:38,809 INFO L85 PathProgramCache]: Analyzing trace with hash 213922515, now seen corresponding path program 1 times [2022-11-19 07:49:38,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:38,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391276319] [2022-11-19 07:49:38,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:38,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-19 07:49:39,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:39,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391276319] [2022-11-19 07:49:39,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391276319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:39,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:39,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:49:39,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806069356] [2022-11-19 07:49:39,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:39,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:49:39,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:39,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:49:39,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:39,687 INFO L87 Difference]: Start difference. First operand has 1429 states, 848 states have (on average 1.3113207547169812) internal successors, (1112), 862 states have internal predecessors, (1112), 488 states have call successors, (488), 91 states have call predecessors, (488), 90 states have return successors, (481), 479 states have call predecessors, (481), 481 states have call successors, (481) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 07:49:41,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:41,419 INFO L93 Difference]: Finished difference Result 4182 states and 6195 transitions. [2022-11-19 07:49:41,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:49:41,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-11-19 07:49:41,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:41,451 INFO L225 Difference]: With dead ends: 4182 [2022-11-19 07:49:41,452 INFO L226 Difference]: Without dead ends: 2753 [2022-11-19 07:49:41,472 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 [2022-11-19 07:49:41,477 INFO L413 NwaCegarLoop]: 2263 mSDtfsCounter, 1973 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 4038 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:41,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 4038 Invalid, 538 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-19 07:49:41,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2022-11-19 07:49:41,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2749. [2022-11-19 07:49:41,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 1648 states have (on average 1.3046116504854368) internal successors, (2150), 1675 states have internal predecessors, (2150), 922 states have call successors, (922), 177 states have call predecessors, (922), 176 states have return successors, (918), 914 states have call predecessors, (918), 918 states have call successors, (918) [2022-11-19 07:49:41,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3990 transitions. [2022-11-19 07:49:41,871 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3990 transitions. Word has length 71 [2022-11-19 07:49:41,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:41,872 INFO L495 AbstractCegarLoop]: Abstraction has 2749 states and 3990 transitions. [2022-11-19 07:49:41,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 07:49:41,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3990 transitions. [2022-11-19 07:49:41,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-19 07:49:41,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:41,879 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:41,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:49:41,879 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:49:41,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:41,880 INFO L85 PathProgramCache]: Analyzing trace with hash 350039423, now seen corresponding path program 1 times [2022-11-19 07:49:41,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:41,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923917983] [2022-11-19 07:49:41,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:41,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-19 07:49:42,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:42,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923917983] [2022-11-19 07:49:42,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923917983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:42,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:42,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:49:42,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227745914] [2022-11-19 07:49:42,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:42,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:49:42,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:42,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:49:42,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:49:42,597 INFO L87 Difference]: Start difference. First operand 2749 states and 3990 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 07:49:49,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:49,237 INFO L93 Difference]: Finished difference Result 7146 states and 10374 transitions. [2022-11-19 07:49:49,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:49:49,238 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 79 [2022-11-19 07:49:49,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:49,263 INFO L225 Difference]: With dead ends: 7146 [2022-11-19 07:49:49,263 INFO L226 Difference]: Without dead ends: 4408 [2022-11-19 07:49:49,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:49:49,274 INFO L413 NwaCegarLoop]: 2489 mSDtfsCounter, 6072 mSDsluCounter, 2382 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 1971 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6287 SdHoareTripleChecker+Valid, 4871 SdHoareTripleChecker+Invalid, 4745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1971 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:49,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6287 Valid, 4871 Invalid, 4745 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1971 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-19 07:49:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2022-11-19 07:49:49,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4354. [2022-11-19 07:49:49,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4354 states, 2660 states have (on average 1.3150375939849623) internal successors, (3498), 2703 states have internal predecessors, (3498), 1401 states have call successors, (1401), 293 states have call predecessors, (1401), 290 states have return successors, (1397), 1385 states have call predecessors, (1397), 1397 states have call successors, (1397) [2022-11-19 07:49:49,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 6296 transitions. [2022-11-19 07:49:49,568 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 6296 transitions. Word has length 79 [2022-11-19 07:49:49,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:49,569 INFO L495 AbstractCegarLoop]: Abstraction has 4354 states and 6296 transitions. [2022-11-19 07:49:49,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 07:49:49,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 6296 transitions. [2022-11-19 07:49:49,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-19 07:49:49,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:49,573 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:49,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:49:49,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:49:49,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:49,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2101997464, now seen corresponding path program 1 times [2022-11-19 07:49:49,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:49,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471790661] [2022-11-19 07:49:49,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:49,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:49,769 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-19 07:49:49,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:49,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471790661] [2022-11-19 07:49:49,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471790661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:49,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:49,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:49:49,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537858891] [2022-11-19 07:49:49,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:49,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:49:49,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:49,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:49:49,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:49,774 INFO L87 Difference]: Start difference. First operand 4354 states and 6296 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 07:49:51,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:51,286 INFO L93 Difference]: Finished difference Result 10564 states and 15184 transitions. [2022-11-19 07:49:51,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:49:51,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2022-11-19 07:49:51,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:51,325 INFO L225 Difference]: With dead ends: 10564 [2022-11-19 07:49:51,326 INFO L226 Difference]: Without dead ends: 6221 [2022-11-19 07:49:51,342 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 [2022-11-19 07:49:51,343 INFO L413 NwaCegarLoop]: 2166 mSDtfsCounter, 1526 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 3946 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:51,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 3946 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 07:49:51,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6221 states. [2022-11-19 07:49:51,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6221 to 6192. [2022-11-19 07:49:51,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6192 states, 3767 states have (on average 1.3100610565436688) internal successors, (4935), 3834 states have internal predecessors, (4935), 1956 states have call successors, (1956), 471 states have call predecessors, (1956), 466 states have return successors, (1955), 1922 states have call predecessors, (1955), 1952 states have call successors, (1955) [2022-11-19 07:49:51,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 8846 transitions. [2022-11-19 07:49:51,756 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 8846 transitions. Word has length 81 [2022-11-19 07:49:51,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:51,757 INFO L495 AbstractCegarLoop]: Abstraction has 6192 states and 8846 transitions. [2022-11-19 07:49:51,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 07:49:51,758 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 8846 transitions. [2022-11-19 07:49:51,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-19 07:49:51,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:51,761 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:51,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:49:51,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:49:51,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:51,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1433332848, now seen corresponding path program 1 times [2022-11-19 07:49:51,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:51,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135995453] [2022-11-19 07:49:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:51,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-19 07:49:51,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:51,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135995453] [2022-11-19 07:49:51,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135995453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:51,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:51,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:49:51,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124965682] [2022-11-19 07:49:51,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:51,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:49:51,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:51,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:49:51,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:51,996 INFO L87 Difference]: Start difference. First operand 6192 states and 8846 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:49:53,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:53,782 INFO L93 Difference]: Finished difference Result 17274 states and 24595 transitions. [2022-11-19 07:49:53,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:49:53,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 79 [2022-11-19 07:49:53,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:53,919 INFO L225 Difference]: With dead ends: 17274 [2022-11-19 07:49:53,920 INFO L226 Difference]: Without dead ends: 11093 [2022-11-19 07:49:53,943 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 [2022-11-19 07:49:53,944 INFO L413 NwaCegarLoop]: 2226 mSDtfsCounter, 1839 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 3992 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:53,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1839 Valid, 3992 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-19 07:49:53,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11093 states. [2022-11-19 07:49:54,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11093 to 11055. [2022-11-19 07:49:54,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11055 states, 6720 states have (on average 1.2983630952380953) internal successors, (8725), 6855 states have internal predecessors, (8725), 3450 states have call successors, (3450), 891 states have call predecessors, (3450), 882 states have return successors, (3452), 3371 states have call predecessors, (3452), 3446 states have call successors, (3452) [2022-11-19 07:49:54,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11055 states to 11055 states and 15627 transitions. [2022-11-19 07:49:54,813 INFO L78 Accepts]: Start accepts. Automaton has 11055 states and 15627 transitions. Word has length 79 [2022-11-19 07:49:54,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:54,814 INFO L495 AbstractCegarLoop]: Abstraction has 11055 states and 15627 transitions. [2022-11-19 07:49:54,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:49:54,814 INFO L276 IsEmpty]: Start isEmpty. Operand 11055 states and 15627 transitions. [2022-11-19 07:49:54,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-19 07:49:54,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:54,818 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:54,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:49:54,819 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:49:54,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:54,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1509200625, now seen corresponding path program 1 times [2022-11-19 07:49:54,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:54,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929701044] [2022-11-19 07:49:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:54,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-19 07:49:54,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:54,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929701044] [2022-11-19 07:49:54,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929701044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:54,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:54,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:49:54,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297995189] [2022-11-19 07:49:54,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:54,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:49:54,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:54,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:49:54,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:54,976 INFO L87 Difference]: Start difference. First operand 11055 states and 15627 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:49:57,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:57,203 INFO L93 Difference]: Finished difference Result 31847 states and 44972 transitions. [2022-11-19 07:49:57,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:49:57,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 80 [2022-11-19 07:49:57,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:57,313 INFO L225 Difference]: With dead ends: 31847 [2022-11-19 07:49:57,313 INFO L226 Difference]: Without dead ends: 20803 [2022-11-19 07:49:57,355 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 [2022-11-19 07:49:57,356 INFO L413 NwaCegarLoop]: 2415 mSDtfsCounter, 1946 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 4181 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:57,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 4181 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-19 07:49:57,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20803 states. [2022-11-19 07:49:58,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20803 to 20765. [2022-11-19 07:49:58,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20765 states, 12664 states have (on average 1.2884554643082755) internal successors, (16317), 12936 states have internal predecessors, (16317), 6410 states have call successors, (6410), 1705 states have call predecessors, (6410), 1688 states have return successors, (6418), 6241 states have call predecessors, (6418), 6406 states have call successors, (6418) [2022-11-19 07:49:58,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20765 states to 20765 states and 29145 transitions. [2022-11-19 07:49:58,828 INFO L78 Accepts]: Start accepts. Automaton has 20765 states and 29145 transitions. Word has length 80 [2022-11-19 07:49:58,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:58,829 INFO L495 AbstractCegarLoop]: Abstraction has 20765 states and 29145 transitions. [2022-11-19 07:49:58,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:49:58,829 INFO L276 IsEmpty]: Start isEmpty. Operand 20765 states and 29145 transitions. [2022-11-19 07:49:58,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-19 07:49:58,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:58,831 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 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] [2022-11-19 07:49:58,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:49:58,832 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:49:58,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:58,832 INFO L85 PathProgramCache]: Analyzing trace with hash 539245408, now seen corresponding path program 1 times [2022-11-19 07:49:58,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:58,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576656727] [2022-11-19 07:49:58,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:58,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-19 07:49:59,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:59,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576656727] [2022-11-19 07:49:59,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576656727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:59,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:59,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:49:59,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681074978] [2022-11-19 07:49:59,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:59,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:49:59,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:59,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:49:59,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:59,021 INFO L87 Difference]: Start difference. First operand 20765 states and 29145 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:50:01,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:50:01,997 INFO L93 Difference]: Finished difference Result 57638 states and 80900 transitions. [2022-11-19 07:50:01,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:50:01,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 92 [2022-11-19 07:50:01,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:50:02,200 INFO L225 Difference]: With dead ends: 57638 [2022-11-19 07:50:02,200 INFO L226 Difference]: Without dead ends: 36884 [2022-11-19 07:50:02,269 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 [2022-11-19 07:50:02,272 INFO L413 NwaCegarLoop]: 2635 mSDtfsCounter, 1838 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 4373 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:50:02,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1838 Valid, 4373 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-19 07:50:02,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36884 states. [2022-11-19 07:50:04,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36884 to 36834. [2022-11-19 07:50:04,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36834 states, 22417 states have (on average 1.2840701253512958) internal successors, (28785), 22967 states have internal predecessors, (28785), 11412 states have call successors, (11412), 3067 states have call predecessors, (11412), 3002 states have return successors, (11440), 11019 states have call predecessors, (11440), 11408 states have call successors, (11440) [2022-11-19 07:50:05,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36834 states to 36834 states and 51637 transitions. [2022-11-19 07:50:05,024 INFO L78 Accepts]: Start accepts. Automaton has 36834 states and 51637 transitions. Word has length 92 [2022-11-19 07:50:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:50:05,025 INFO L495 AbstractCegarLoop]: Abstraction has 36834 states and 51637 transitions. [2022-11-19 07:50:05,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:50:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 36834 states and 51637 transitions. [2022-11-19 07:50:05,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-19 07:50:05,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:50:05,028 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-11-19 07:50:05,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:50:05,033 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:50:05,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:50:05,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1578982650, now seen corresponding path program 1 times [2022-11-19 07:50:05,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:50:05,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100907556] [2022-11-19 07:50:05,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:50:05,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:50:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:50:05,286 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-19 07:50:05,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:50:05,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100907556] [2022-11-19 07:50:05,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100907556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:50:05,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:50:05,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:50:05,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595957081] [2022-11-19 07:50:05,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:50:05,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:50:05,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:50:05,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:50:05,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:50:05,290 INFO L87 Difference]: Start difference. First operand 36834 states and 51637 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:50:08,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:50:08,173 INFO L93 Difference]: Finished difference Result 73636 states and 103279 transitions. [2022-11-19 07:50:08,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:50:08,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 122 [2022-11-19 07:50:08,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:50:08,381 INFO L225 Difference]: With dead ends: 73636 [2022-11-19 07:50:08,381 INFO L226 Difference]: Without dead ends: 36882 [2022-11-19 07:50:08,503 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 [2022-11-19 07:50:08,506 INFO L413 NwaCegarLoop]: 1796 mSDtfsCounter, 0 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:50:08,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3590 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 07:50:08,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36882 states. [2022-11-19 07:50:10,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36882 to 36882. [2022-11-19 07:50:10,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36882 states, 22465 states have (on average 1.283463164923214) internal successors, (28833), 23015 states have internal predecessors, (28833), 11412 states have call successors, (11412), 3067 states have call predecessors, (11412), 3002 states have return successors, (11440), 11019 states have call predecessors, (11440), 11408 states have call successors, (11440) [2022-11-19 07:50:11,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36882 states to 36882 states and 51685 transitions. [2022-11-19 07:50:11,161 INFO L78 Accepts]: Start accepts. Automaton has 36882 states and 51685 transitions. Word has length 122 [2022-11-19 07:50:11,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:50:11,161 INFO L495 AbstractCegarLoop]: Abstraction has 36882 states and 51685 transitions. [2022-11-19 07:50:11,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:50:11,162 INFO L276 IsEmpty]: Start isEmpty. Operand 36882 states and 51685 transitions. [2022-11-19 07:50:11,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-19 07:50:11,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:50:11,170 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-11-19 07:50:11,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:50:11,171 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:50:11,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:50:11,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1712341020, now seen corresponding path program 1 times [2022-11-19 07:50:11,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:50:11,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689990280] [2022-11-19 07:50:11,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:50:11,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:50:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:50:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-19 07:50:11,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:50:11,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689990280] [2022-11-19 07:50:11,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689990280] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:50:11,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854909177] [2022-11-19 07:50:11,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:50:11,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:50:11,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:50:11,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:50:11,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:50:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:50:12,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:50:12,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:50:12,324 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-19 07:50:12,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:50:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-19 07:50:12,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854909177] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:50:12,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [654798224] [2022-11-19 07:50:12,475 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2022-11-19 07:50:12,475 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:50:12,478 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:50:12,484 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:50:12,484 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:50:15,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 232 treesize of output 202 [2022-11-19 07:50:15,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 07:50:16,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 07:51:01,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:51:02,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 07:51:03,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 985 treesize of output 794 [2022-11-19 07:51:03,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 985 treesize of output 794 [2022-11-19 07:51:04,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 923 treesize of output 779 [2022-11-19 07:51:04,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-19 07:51:11,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:11,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6438 treesize of output 6029 [2022-11-19 07:51:12,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:12,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6434 treesize of output 6025 [2022-11-19 07:51:13,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:51:13,185 INFO L217 Elim1Store]: Index analysis took 134 ms [2022-11-19 07:51:13,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 6439 treesize of output 6079 [2022-11-19 07:51:19,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-11-19 07:51:21,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 07:51:21,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-19 07:51:21,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 07:51:23,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:51:36,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:51:37,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:51:37,151 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:51:37,156 INFO L158 Benchmark]: Toolchain (without parser) took 129833.12ms. Allocated memory was 92.3MB in the beginning and 6.9GB in the end (delta: 6.8GB). Free memory was 62.0MB in the beginning and 2.6GB in the end (delta: -2.6GB). Peak memory consumption was 4.2GB. Max. memory is 16.1GB. [2022-11-19 07:51:37,156 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory was 61.0MB in the beginning and 61.0MB in the end (delta: 22.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:51:37,156 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3535.70ms. Allocated memory was 92.3MB in the beginning and 174.1MB in the end (delta: 81.8MB). Free memory was 62.0MB in the beginning and 94.6MB in the end (delta: -32.6MB). Peak memory consumption was 83.3MB. Max. memory is 16.1GB. [2022-11-19 07:51:37,157 INFO L158 Benchmark]: Boogie Procedure Inliner took 356.56ms. Allocated memory is still 174.1MB. Free memory was 94.6MB in the beginning and 95.5MB in the end (delta: -925.8kB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2022-11-19 07:51:37,157 INFO L158 Benchmark]: Boogie Preprocessor took 279.11ms. Allocated memory is still 174.1MB. Free memory was 95.5MB in the beginning and 64.9MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-19 07:51:37,157 INFO L158 Benchmark]: RCFGBuilder took 7152.05ms. Allocated memory was 174.1MB in the beginning and 402.7MB in the end (delta: 228.6MB). Free memory was 64.1MB in the beginning and 142.0MB in the end (delta: -77.9MB). Peak memory consumption was 161.0MB. Max. memory is 16.1GB. [2022-11-19 07:51:37,158 INFO L158 Benchmark]: TraceAbstraction took 118501.42ms. Allocated memory was 402.7MB in the beginning and 6.9GB in the end (delta: 6.5GB). Free memory was 142.0MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 4.0GB. Max. memory is 16.1GB. [2022-11-19 07:51:37,160 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory was 61.0MB in the beginning and 61.0MB in the end (delta: 22.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3535.70ms. Allocated memory was 92.3MB in the beginning and 174.1MB in the end (delta: 81.8MB). Free memory was 62.0MB in the beginning and 94.6MB in the end (delta: -32.6MB). Peak memory consumption was 83.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 356.56ms. Allocated memory is still 174.1MB. Free memory was 94.6MB in the beginning and 95.5MB in the end (delta: -925.8kB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 279.11ms. Allocated memory is still 174.1MB. Free memory was 95.5MB in the beginning and 64.9MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * RCFGBuilder took 7152.05ms. Allocated memory was 174.1MB in the beginning and 402.7MB in the end (delta: 228.6MB). Free memory was 64.1MB in the beginning and 142.0MB in the end (delta: -77.9MB). Peak memory consumption was 161.0MB. Max. memory is 16.1GB. * TraceAbstraction took 118501.42ms. Allocated memory was 402.7MB in the beginning and 6.9GB in the end (delta: 6.5GB). Free memory was 142.0MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 4.0GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-19 07:51:37,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS --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 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 --- 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-8393723 [2022-11-19 07:51:39,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:51:39,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:51:39,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:51:39,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:51:39,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:51:39,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:51:39,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:51:39,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:51:39,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:51:39,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:51:39,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:51:39,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:51:39,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:51:39,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:51:39,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:51:39,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:51:39,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:51:39,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:51:39,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:51:39,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:51:39,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:51:39,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:51:39,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:51:39,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:51:39,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:51:39,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:51:39,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:51:39,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:51:39,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:51:39,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:51:39,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:51:39,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:51:39,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:51:39,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:51:39,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:51:39,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:51:39,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:51:39,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:51:39,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:51:39,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:51:39,806 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 07:51:39,844 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:51:39,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:51:39,845 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:51:39,845 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:51:39,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:51:39,846 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:51:39,846 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:51:39,847 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:51:39,847 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:51:39,847 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:51:39,848 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:51:39,848 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:51:39,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:51:39,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:51:39,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:51:39,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:51:39,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:51:39,851 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:51:39,851 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:51:39,851 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:51:39,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:51:39,852 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:51:39,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:51:39,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:51:39,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:51:39,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:51:39,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:51:39,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:51:39,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:51:39,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:51:39,854 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:51:39,854 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:51:39,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:51:39,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:51:39,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:51:39,855 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 [2022-11-19 07:51:40,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:51:40,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:51:40,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:51:40,317 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:51:40,318 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:51:40,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2022-11-19 07:51:40,399 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/data/a37c0dd87/0f8df8833b604ca0bd8f96d4a196377f/FLAG9410a03b7 [2022-11-19 07:51:41,380 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:51:41,380 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2022-11-19 07:51:41,476 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/data/a37c0dd87/0f8df8833b604ca0bd8f96d4a196377f/FLAG9410a03b7 [2022-11-19 07:51:41,807 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/data/a37c0dd87/0f8df8833b604ca0bd8f96d4a196377f [2022-11-19 07:51:41,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:51:41,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:51:41,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:51:41,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:51:41,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:51:41,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:41" (1/1) ... [2022-11-19 07:51:41,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336ade59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:41, skipping insertion in model container [2022-11-19 07:51:41,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:41" (1/1) ... [2022-11-19 07:51:41,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:51:42,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:51:44,811 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2022-11-19 07:51:44,817 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2022-11-19 07:51:44,819 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2022-11-19 07:51:44,821 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2022-11-19 07:51:44,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:51:44,891 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:51:44,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:51:45,333 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2022-11-19 07:51:45,334 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2022-11-19 07:51:45,334 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2022-11-19 07:51:45,335 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2022-11-19 07:51:45,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:51:45,395 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:51:45,788 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2022-11-19 07:51:45,788 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2022-11-19 07:51:45,789 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2022-11-19 07:51:45,790 WARN L234 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_0b5b7abf-90de-49bd-ad95-10b7808935ce/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2022-11-19 07:51:45,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:51:45,996 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:51:45,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:45 WrapperNode [2022-11-19 07:51:45,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:51:45,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:51:45,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:51:45,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:51:46,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:45" (1/1) ... [2022-11-19 07:51:46,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:45" (1/1) ... [2022-11-19 07:51:46,230 INFO L138 Inliner]: procedures = 432, calls = 1993, calls flagged for inlining = 195, calls inlined = 179, statements flattened = 5084 [2022-11-19 07:51:46,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:51:46,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:51:46,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:51:46,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:51:46,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:45" (1/1) ... [2022-11-19 07:51:46,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:45" (1/1) ... [2022-11-19 07:51:46,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:45" (1/1) ... [2022-11-19 07:51:46,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:45" (1/1) ... [2022-11-19 07:51:46,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:45" (1/1) ... [2022-11-19 07:51:46,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:45" (1/1) ... [2022-11-19 07:51:46,523 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:45" (1/1) ... [2022-11-19 07:51:46,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:45" (1/1) ... [2022-11-19 07:51:46,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:51:46,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:51:46,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:51:46,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:51:46,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:45" (1/1) ... [2022-11-19 07:51:46,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:51:46,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:51:46,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:51:46,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:51:46,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2022-11-19 07:51:46,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2022-11-19 07:51:46,667 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 07:51:46,667 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 07:51:46,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:51:46,668 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:51:46,668 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 07:51:46,668 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 07:51:46,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:51:46,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:51:46,668 INFO L130 BoogieDeclarations]: Found specification of procedure fst_remove_one [2022-11-19 07:51:46,669 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_remove_one [2022-11-19 07:51:46,669 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 07:51:46,669 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 07:51:46,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 07:51:46,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 07:51:46,669 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-19 07:51:46,670 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-19 07:51:46,670 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-19 07:51:46,670 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-19 07:51:46,670 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2022-11-19 07:51:46,670 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2022-11-19 07:51:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-11-19 07:51:46,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-11-19 07:51:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_67 [2022-11-19 07:51:46,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_67 [2022-11-19 07:51:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:51:46,672 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:51:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure fst_close [2022-11-19 07:51:46,672 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_close [2022-11-19 07:51:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-11-19 07:51:46,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-11-19 07:51:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 07:51:46,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 07:51:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-19 07:51:46,674 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-19 07:51:46,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 07:51:46,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 07:51:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure fst_tx_timeout [2022-11-19 07:51:46,676 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_tx_timeout [2022-11-19 07:51:46,676 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 07:51:46,676 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 07:51:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:51:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-19 07:51:46,677 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-19 07:51:46,678 INFO L130 BoogieDeclarations]: Found specification of procedure fst_open [2022-11-19 07:51:46,678 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_open [2022-11-19 07:51:46,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:51:46,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-19 07:51:46,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-19 07:51:46,679 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_type_trans [2022-11-19 07:51:46,679 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_type_trans [2022-11-19 07:51:46,680 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:51:46,680 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:51:46,680 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-19 07:51:46,680 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-19 07:51:46,680 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 07:51:46,680 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 07:51:46,681 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 07:51:46,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 07:51:46,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 07:51:46,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 07:51:46,682 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-11-19 07:51:46,682 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-11-19 07:51:46,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:51:46,683 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:51:46,683 INFO L130 BoogieDeclarations]: Found specification of procedure fst_issue_cmd [2022-11-19 07:51:46,683 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_issue_cmd [2022-11-19 07:51:46,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 07:51:46,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 07:51:46,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 07:51:46,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 07:51:46,684 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-19 07:51:46,684 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-19 07:51:46,685 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 07:51:46,685 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 07:51:46,685 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-19 07:51:46,685 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-19 07:51:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 07:51:46,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 07:51:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:51:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 07:51:46,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 07:51:46,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-19 07:51:46,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-19 07:51:46,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_card_lock_of_fst_card_info [2022-11-19 07:51:46,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_card_lock_of_fst_card_info [2022-11-19 07:51:46,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:51:46,689 INFO L130 BoogieDeclarations]: Found specification of procedure fst_cpureset [2022-11-19 07:51:46,689 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_cpureset [2022-11-19 07:51:46,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 07:51:46,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 07:51:46,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:51:46,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-19 07:51:46,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-19 07:51:46,690 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:51:46,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:51:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-19 07:51:46,691 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-19 07:51:46,692 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-19 07:51:46,692 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-19 07:51:46,696 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-19 07:51:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure fst_q_work_item [2022-11-19 07:51:46,696 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_q_work_item [2022-11-19 07:51:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-19 07:51:46,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-19 07:51:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:51:46,698 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:51:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-19 07:51:46,699 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-19 07:51:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 07:51:46,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 07:51:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-19 07:51:46,705 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-19 07:51:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-19 07:51:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-19 07:51:46,706 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-19 07:51:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2022-11-19 07:51:46,706 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2022-11-19 07:51:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:51:46,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:51:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 07:51:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-19 07:51:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:51:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:51:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-19 07:51:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:51:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:51:46,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:51:46,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 07:51:46,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 07:51:46,708 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 07:51:46,708 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 07:51:46,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:51:46,708 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:51:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 07:51:46,709 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 07:51:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-19 07:51:46,709 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-19 07:51:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 07:51:46,709 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 07:51:46,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:51:46,710 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-19 07:51:46,710 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-19 07:51:46,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:51:46,710 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2022-11-19 07:51:46,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2022-11-19 07:51:46,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-19 07:51:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-19 07:51:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-19 07:51:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 07:51:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:51:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-19 07:51:46,711 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-19 07:51:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-19 07:51:46,712 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-19 07:51:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-19 07:51:46,712 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-19 07:51:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 07:51:46,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 07:51:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-19 07:51:46,713 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-19 07:51:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-19 07:51:46,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-19 07:51:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure farsync_type_trans [2022-11-19 07:51:46,713 INFO L138 BoogieDeclarations]: Found implementation of procedure farsync_type_trans [2022-11-19 07:51:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 07:51:46,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 07:51:46,714 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:51:46,715 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:51:46,715 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-11-19 07:51:46,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-11-19 07:51:46,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_fst_work_q_lock [2022-11-19 07:51:46,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_fst_work_q_lock [2022-11-19 07:51:46,715 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:51:46,716 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:51:46,716 INFO L130 BoogieDeclarations]: Found specification of procedure fst_disable_intr [2022-11-19 07:51:46,716 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_disable_intr [2022-11-19 07:51:46,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-19 07:51:46,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-19 07:51:46,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-19 07:51:46,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-19 07:51:46,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:51:46,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:51:46,717 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 07:51:46,717 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 07:51:46,717 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-19 07:51:46,717 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-19 07:51:46,717 INFO L130 BoogieDeclarations]: Found specification of procedure do_bottom_half_tx [2022-11-19 07:51:46,718 INFO L138 BoogieDeclarations]: Found implementation of procedure do_bottom_half_tx [2022-11-19 07:51:46,718 INFO L130 BoogieDeclarations]: Found specification of procedure fst_process_rx_status [2022-11-19 07:51:46,718 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_process_rx_status [2022-11-19 07:51:46,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 07:51:46,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 07:51:46,718 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2022-11-19 07:51:46,718 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2022-11-19 07:51:46,719 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2022-11-19 07:51:46,719 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2022-11-19 07:51:46,719 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-19 07:51:46,719 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-19 07:51:46,719 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-19 07:51:46,719 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-19 07:51:46,719 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-19 07:51:46,720 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-19 07:51:46,720 INFO L130 BoogieDeclarations]: Found specification of procedure fst_clear_intr [2022-11-19 07:51:46,720 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_clear_intr [2022-11-19 07:51:46,720 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2022-11-19 07:51:46,720 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2022-11-19 07:51:46,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 07:51:46,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 07:51:46,721 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-19 07:51:46,721 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-19 07:51:47,615 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:51:47,620 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:51:47,732 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:52:19,165 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 07:52:19,332 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:52:19,358 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:52:19,359 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:52:19,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:52:19 BoogieIcfgContainer [2022-11-19 07:52:19,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:52:19,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:52:19,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:52:19,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:52:19,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:51:41" (1/3) ... [2022-11-19 07:52:19,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473b8f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:52:19, skipping insertion in model container [2022-11-19 07:52:19,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:45" (2/3) ... [2022-11-19 07:52:19,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473b8f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:52:19, skipping insertion in model container [2022-11-19 07:52:19,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:52:19" (3/3) ... [2022-11-19 07:52:19,379 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2022-11-19 07:52:19,398 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:52:19,398 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 07:52:19,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:52:19,525 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;@1b9ada7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:52:19,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 07:52:19,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 1818 states, 1237 states have (on average 1.2853678253839935) internal successors, (1590), 1251 states have internal predecessors, (1590), 488 states have call successors, (488), 91 states have call predecessors, (488), 90 states have return successors, (481), 479 states have call predecessors, (481), 481 states have call successors, (481) [2022-11-19 07:52:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-19 07:52:19,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:19,558 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:19,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:52:19,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:19,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1586425349, now seen corresponding path program 1 times [2022-11-19 07:52:19,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:52:19,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453913765] [2022-11-19 07:52:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:19,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:19,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:52:19,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:52:19,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 07:52:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:20,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:52:20,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-19 07:52:20,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:52:20,984 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:52:20,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453913765] [2022-11-19 07:52:20,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453913765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:20,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:20,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:20,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325707414] [2022-11-19 07:52:20,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:20,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:20,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:52:21,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:21,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:21,038 INFO L87 Difference]: Start difference. First operand has 1818 states, 1237 states have (on average 1.2853678253839935) internal successors, (1590), 1251 states have internal predecessors, (1590), 488 states have call successors, (488), 91 states have call predecessors, (488), 90 states have return successors, (481), 479 states have call predecessors, (481), 481 states have call successors, (481) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 07:52:21,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:21,653 INFO L93 Difference]: Finished difference Result 5318 states and 7604 transitions. [2022-11-19 07:52:21,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:21,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 83 [2022-11-19 07:52:21,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:21,698 INFO L225 Difference]: With dead ends: 5318 [2022-11-19 07:52:21,699 INFO L226 Difference]: Without dead ends: 3504 [2022-11-19 07:52:21,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:21,726 INFO L413 NwaCegarLoop]: 3003 mSDtfsCounter, 2426 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2426 SdHoareTripleChecker+Valid, 5490 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:21,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2426 Valid, 5490 Invalid, 34 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:52:21,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3504 states. [2022-11-19 07:52:22,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3504 to 3500. [2022-11-19 07:52:22,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3500 states, 2399 states have (on average 1.2817840766986244) internal successors, (3075), 2426 states have internal predecessors, (3075), 922 states have call successors, (922), 177 states have call predecessors, (922), 176 states have return successors, (918), 914 states have call predecessors, (918), 918 states have call successors, (918) [2022-11-19 07:52:22,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3500 states to 3500 states and 4915 transitions. [2022-11-19 07:52:22,109 INFO L78 Accepts]: Start accepts. Automaton has 3500 states and 4915 transitions. Word has length 83 [2022-11-19 07:52:22,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:22,110 INFO L495 AbstractCegarLoop]: Abstraction has 3500 states and 4915 transitions. [2022-11-19 07:52:22,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 07:52:22,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3500 states and 4915 transitions. [2022-11-19 07:52:22,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-19 07:52:22,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:22,121 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:22,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:22,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:22,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:52:22,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:22,333 INFO L85 PathProgramCache]: Analyzing trace with hash 917190880, now seen corresponding path program 1 times [2022-11-19 07:52:22,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:52:22,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889291141] [2022-11-19 07:52:22,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:22,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:22,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:52:22,337 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:52:22,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 07:52:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:23,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:52:23,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:23,868 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-19 07:52:23,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:52:23,868 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:52:23,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889291141] [2022-11-19 07:52:23,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889291141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:23,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:23,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:23,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074675871] [2022-11-19 07:52:23,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:23,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:23,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:52:23,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:23,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:23,872 INFO L87 Difference]: Start difference. First operand 3500 states and 4915 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 07:52:24,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:24,615 INFO L93 Difference]: Finished difference Result 7729 states and 10885 transitions. [2022-11-19 07:52:24,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:24,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-11-19 07:52:24,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:24,644 INFO L225 Difference]: With dead ends: 7729 [2022-11-19 07:52:24,644 INFO L226 Difference]: Without dead ends: 4244 [2022-11-19 07:52:24,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:24,661 INFO L413 NwaCegarLoop]: 2872 mSDtfsCounter, 1765 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 5337 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:24,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1765 Valid, 5337 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:52:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2022-11-19 07:52:24,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 4218. [2022-11-19 07:52:24,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4218 states, 2922 states have (on average 1.2919233401779604) internal successors, (3775), 2954 states have internal predecessors, (3775), 1076 states have call successors, (1076), 219 states have call predecessors, (1076), 217 states have return successors, (1072), 1065 states have call predecessors, (1072), 1072 states have call successors, (1072) [2022-11-19 07:52:24,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4218 states to 4218 states and 5923 transitions. [2022-11-19 07:52:24,968 INFO L78 Accepts]: Start accepts. Automaton has 4218 states and 5923 transitions. Word has length 93 [2022-11-19 07:52:24,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:24,971 INFO L495 AbstractCegarLoop]: Abstraction has 4218 states and 5923 transitions. [2022-11-19 07:52:24,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 07:52:24,971 INFO L276 IsEmpty]: Start isEmpty. Operand 4218 states and 5923 transitions. [2022-11-19 07:52:24,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-19 07:52:24,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:24,976 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:25,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:25,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:25,199 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:52:25,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:25,200 INFO L85 PathProgramCache]: Analyzing trace with hash -418656966, now seen corresponding path program 1 times [2022-11-19 07:52:25,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:52:25,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133545834] [2022-11-19 07:52:25,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:25,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:25,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:52:25,209 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:52:25,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-19 07:52:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:26,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:52:26,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-19 07:52:26,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:52:26,544 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:52:26,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133545834] [2022-11-19 07:52:26,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133545834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:26,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:26,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:26,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430456539] [2022-11-19 07:52:26,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:26,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:26,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:52:26,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:26,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:26,546 INFO L87 Difference]: Start difference. First operand 4218 states and 5923 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:52:27,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:27,221 INFO L93 Difference]: Finished difference Result 11057 states and 15468 transitions. [2022-11-19 07:52:27,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:27,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-11-19 07:52:27,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:27,261 INFO L225 Difference]: With dead ends: 11057 [2022-11-19 07:52:27,261 INFO L226 Difference]: Without dead ends: 6854 [2022-11-19 07:52:27,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:27,277 INFO L413 NwaCegarLoop]: 2966 mSDtfsCounter, 2266 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2266 SdHoareTripleChecker+Valid, 5443 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:27,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2266 Valid, 5443 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:52:27,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6854 states. [2022-11-19 07:52:27,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6854 to 6824. [2022-11-19 07:52:27,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6824 states, 4725 states have (on average 1.2802116402116401) internal successors, (6049), 4782 states have internal predecessors, (6049), 1721 states have call successors, (1721), 378 states have call predecessors, (1721), 375 states have return successors, (1717), 1696 states have call predecessors, (1717), 1717 states have call successors, (1717) [2022-11-19 07:52:27,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6824 states to 6824 states and 9487 transitions. [2022-11-19 07:52:27,706 INFO L78 Accepts]: Start accepts. Automaton has 6824 states and 9487 transitions. Word has length 91 [2022-11-19 07:52:27,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:27,707 INFO L495 AbstractCegarLoop]: Abstraction has 6824 states and 9487 transitions. [2022-11-19 07:52:27,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:52:27,708 INFO L276 IsEmpty]: Start isEmpty. Operand 6824 states and 9487 transitions. [2022-11-19 07:52:27,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-19 07:52:27,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:27,710 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:27,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:27,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:27,932 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:52:27,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:27,933 INFO L85 PathProgramCache]: Analyzing trace with hash -246342366, now seen corresponding path program 1 times [2022-11-19 07:52:27,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:52:27,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474868580] [2022-11-19 07:52:27,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:27,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:27,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:52:27,939 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:52:27,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 07:52:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:29,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:52:29,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:29,242 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-19 07:52:29,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:52:29,243 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:52:29,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474868580] [2022-11-19 07:52:29,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474868580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:29,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:29,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:29,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905643611] [2022-11-19 07:52:29,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:29,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:29,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:52:29,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:29,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:29,245 INFO L87 Difference]: Start difference. First operand 6824 states and 9487 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 07:52:30,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:30,028 INFO L93 Difference]: Finished difference Result 16961 states and 23459 transitions. [2022-11-19 07:52:30,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:30,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 95 [2022-11-19 07:52:30,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:30,082 INFO L225 Difference]: With dead ends: 16961 [2022-11-19 07:52:30,082 INFO L226 Difference]: Without dead ends: 10152 [2022-11-19 07:52:30,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:30,103 INFO L413 NwaCegarLoop]: 2906 mSDtfsCounter, 1881 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 5398 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:30,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 5398 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:52:30,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10152 states. [2022-11-19 07:52:30,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10152 to 10122. [2022-11-19 07:52:30,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10122 states, 6991 states have (on average 1.274495780288943) internal successors, (8910), 7086 states have internal predecessors, (8910), 2508 states have call successors, (2508), 625 states have call predecessors, (2508), 620 states have return successors, (2510), 2455 states have call predecessors, (2510), 2504 states have call successors, (2510) [2022-11-19 07:52:30,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10122 states to 10122 states and 13928 transitions. [2022-11-19 07:52:30,795 INFO L78 Accepts]: Start accepts. Automaton has 10122 states and 13928 transitions. Word has length 95 [2022-11-19 07:52:30,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:30,796 INFO L495 AbstractCegarLoop]: Abstraction has 10122 states and 13928 transitions. [2022-11-19 07:52:30,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 07:52:30,796 INFO L276 IsEmpty]: Start isEmpty. Operand 10122 states and 13928 transitions. [2022-11-19 07:52:30,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-19 07:52:30,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:30,804 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:30,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:31,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:31,029 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:52:31,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:31,029 INFO L85 PathProgramCache]: Analyzing trace with hash -674569662, now seen corresponding path program 1 times [2022-11-19 07:52:31,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:52:31,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857308050] [2022-11-19 07:52:31,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:31,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:31,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:52:31,032 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:52:31,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 07:52:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:32,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:52:32,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-19 07:52:32,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:52:32,193 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:52:32,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857308050] [2022-11-19 07:52:32,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857308050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:32,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:32,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:32,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349094235] [2022-11-19 07:52:32,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:32,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:32,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:52:32,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:32,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:32,196 INFO L87 Difference]: Start difference. First operand 10122 states and 13928 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:52:33,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:33,599 INFO L93 Difference]: Finished difference Result 28995 states and 39859 transitions. [2022-11-19 07:52:33,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:33,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 92 [2022-11-19 07:52:33,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:33,697 INFO L225 Difference]: With dead ends: 28995 [2022-11-19 07:52:33,697 INFO L226 Difference]: Without dead ends: 18888 [2022-11-19 07:52:33,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:33,729 INFO L413 NwaCegarLoop]: 3257 mSDtfsCounter, 2398 mSDsluCounter, 2478 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2398 SdHoareTripleChecker+Valid, 5735 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:33,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2398 Valid, 5735 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:52:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18888 states. [2022-11-19 07:52:35,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18888 to 18846. [2022-11-19 07:52:35,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18846 states, 13039 states have (on average 1.266124702814633) internal successors, (16509), 13229 states have internal predecessors, (16509), 4633 states have call successors, (4633), 1180 states have call predecessors, (4633), 1171 states have return successors, (4641), 4520 states have call predecessors, (4641), 4629 states have call successors, (4641) [2022-11-19 07:52:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18846 states to 18846 states and 25783 transitions. [2022-11-19 07:52:35,327 INFO L78 Accepts]: Start accepts. Automaton has 18846 states and 25783 transitions. Word has length 92 [2022-11-19 07:52:35,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:35,327 INFO L495 AbstractCegarLoop]: Abstraction has 18846 states and 25783 transitions. [2022-11-19 07:52:35,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:52:35,329 INFO L276 IsEmpty]: Start isEmpty. Operand 18846 states and 25783 transitions. [2022-11-19 07:52:35,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-19 07:52:35,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:35,331 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:35,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:35,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:35,555 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:52:35,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:35,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1266838149, now seen corresponding path program 1 times [2022-11-19 07:52:35,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:52:35,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309959703] [2022-11-19 07:52:35,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:35,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:35,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:52:35,558 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:52:35,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-19 07:52:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:36,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:52:36,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:36,809 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-19 07:52:36,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:52:36,810 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:52:36,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309959703] [2022-11-19 07:52:36,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309959703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:36,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:36,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:36,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978674044] [2022-11-19 07:52:36,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:36,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:36,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:52:36,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:36,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:36,812 INFO L87 Difference]: Start difference. First operand 18846 states and 25783 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:52:38,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:38,553 INFO L93 Difference]: Finished difference Result 52602 states and 71895 transitions. [2022-11-19 07:52:38,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:38,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 108 [2022-11-19 07:52:38,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:38,731 INFO L225 Difference]: With dead ends: 52602 [2022-11-19 07:52:38,731 INFO L226 Difference]: Without dead ends: 33771 [2022-11-19 07:52:38,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:38,796 INFO L413 NwaCegarLoop]: 3545 mSDtfsCounter, 2272 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2272 SdHoareTripleChecker+Valid, 5989 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:38,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2272 Valid, 5989 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:52:38,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33771 states. [2022-11-19 07:52:41,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33771 to 33729. [2022-11-19 07:52:41,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33729 states, 23313 states have (on average 1.2601123836486081) internal successors, (29377), 23707 states have internal predecessors, (29377), 8304 states have call successors, (8304), 2142 states have call predecessors, (8304), 2109 states have return successors, (8332), 8039 states have call predecessors, (8332), 8300 states have call successors, (8332) [2022-11-19 07:52:41,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33729 states to 33729 states and 46013 transitions. [2022-11-19 07:52:41,451 INFO L78 Accepts]: Start accepts. Automaton has 33729 states and 46013 transitions. Word has length 108 [2022-11-19 07:52:41,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:41,451 INFO L495 AbstractCegarLoop]: Abstraction has 33729 states and 46013 transitions. [2022-11-19 07:52:41,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:52:41,452 INFO L276 IsEmpty]: Start isEmpty. Operand 33729 states and 46013 transitions. [2022-11-19 07:52:41,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-19 07:52:41,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:41,455 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:41,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:41,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:41,671 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:52:41,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:41,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1651618579, now seen corresponding path program 1 times [2022-11-19 07:52:41,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:52:41,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755808594] [2022-11-19 07:52:41,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:41,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:41,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:52:41,675 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:52:41,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-19 07:52:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:43,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:52:43,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-19 07:52:43,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:52:43,262 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:52:43,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755808594] [2022-11-19 07:52:43,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755808594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:43,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:43,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:43,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746289726] [2022-11-19 07:52:43,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:43,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:43,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:52:43,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:43,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:43,265 INFO L87 Difference]: Start difference. First operand 33729 states and 46013 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:52:45,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:45,195 INFO L93 Difference]: Finished difference Result 67430 states and 92019 transitions. [2022-11-19 07:52:45,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:45,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2022-11-19 07:52:45,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:45,339 INFO L225 Difference]: With dead ends: 67430 [2022-11-19 07:52:45,339 INFO L226 Difference]: Without dead ends: 33793 [2022-11-19 07:52:45,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:45,409 INFO L413 NwaCegarLoop]: 2528 mSDtfsCounter, 1 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5054 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:45,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5054 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:52:45,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33793 states. [2022-11-19 07:52:47,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33793 to 33761. [2022-11-19 07:52:47,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33761 states, 23345 states have (on average 1.2597558363675305) internal successors, (29409), 23739 states have internal predecessors, (29409), 8304 states have call successors, (8304), 2142 states have call predecessors, (8304), 2109 states have return successors, (8332), 8039 states have call predecessors, (8332), 8300 states have call successors, (8332) [2022-11-19 07:52:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33761 states to 33761 states and 46045 transitions. [2022-11-19 07:52:47,916 INFO L78 Accepts]: Start accepts. Automaton has 33761 states and 46045 transitions. Word has length 150 [2022-11-19 07:52:47,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:47,917 INFO L495 AbstractCegarLoop]: Abstraction has 33761 states and 46045 transitions. [2022-11-19 07:52:47,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:52:47,918 INFO L276 IsEmpty]: Start isEmpty. Operand 33761 states and 46045 transitions. [2022-11-19 07:52:47,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-19 07:52:47,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:47,920 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:47,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:48,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:48,135 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:52:48,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:48,136 INFO L85 PathProgramCache]: Analyzing trace with hash -544011153, now seen corresponding path program 1 times [2022-11-19 07:52:48,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:52:48,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725012009] [2022-11-19 07:52:48,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:48,137 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:48,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:52:48,139 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:52:48,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 07:52:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:49,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:52:49,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 76 proven. 1 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-19 07:52:49,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:52:49,568 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-19 07:52:49,568 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:52:49,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725012009] [2022-11-19 07:52:49,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725012009] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:52:49,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [694282214] [2022-11-19 07:52:49,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:49,569 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:52:49,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:52:49,572 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:52:49,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-19 07:52:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:50,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:52:50,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-19 07:52:50,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:52:50,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [694282214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:50,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:52:50,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-19 07:52:50,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668937277] [2022-11-19 07:52:50,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:50,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:50,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:52:50,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:50,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:52:50,852 INFO L87 Difference]: Start difference. First operand 33761 states and 46045 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:52:53,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:53,984 INFO L93 Difference]: Finished difference Result 98853 states and 135016 transitions. [2022-11-19 07:52:53,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:53,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 152 [2022-11-19 07:52:53,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:54,261 INFO L225 Difference]: With dead ends: 98853 [2022-11-19 07:52:54,262 INFO L226 Difference]: Without dead ends: 65184 [2022-11-19 07:52:54,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:52:54,351 INFO L413 NwaCegarLoop]: 4645 mSDtfsCounter, 2379 mSDsluCounter, 2503 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2379 SdHoareTripleChecker+Valid, 7148 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:54,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2379 Valid, 7148 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:52:54,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65184 states. [2022-11-19 07:52:58,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65184 to 65180. [2022-11-19 07:52:58,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65180 states, 45190 states have (on average 1.2604558530648373) internal successors, (56960), 45816 states have internal predecessors, (56960), 15946 states have call successors, (15946), 4090 states have call predecessors, (15946), 4041 states have return successors, (16006), 15593 states have call predecessors, (16006), 15942 states have call successors, (16006) [2022-11-19 07:52:58,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65180 states to 65180 states and 88912 transitions. [2022-11-19 07:52:58,630 INFO L78 Accepts]: Start accepts. Automaton has 65180 states and 88912 transitions. Word has length 152 [2022-11-19 07:52:58,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:58,631 INFO L495 AbstractCegarLoop]: Abstraction has 65180 states and 88912 transitions. [2022-11-19 07:52:58,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:52:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 65180 states and 88912 transitions. [2022-11-19 07:52:58,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-19 07:52:58,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:58,634 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:58,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:58,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:59,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:59,047 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:52:59,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:59,048 INFO L85 PathProgramCache]: Analyzing trace with hash -403462543, now seen corresponding path program 1 times [2022-11-19 07:52:59,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:52:59,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866154292] [2022-11-19 07:52:59,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:59,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:52:59,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:52:59,050 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:52:59,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-19 07:53:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:00,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:53:00,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:53:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 76 proven. 1 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-19 07:53:00,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:53:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-19 07:53:00,263 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:53:00,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866154292] [2022-11-19 07:53:00,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866154292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:53:00,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1832898513] [2022-11-19 07:53:00,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:00,264 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:53:00,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:53:00,265 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:53:00,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b5b7abf-90de-49bd-ad95-10b7808935ce/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-19 07:53:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:01,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:53:01,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:53:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-11-19 07:53:02,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:53:02,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1832898513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:02,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:53:02,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 9 [2022-11-19 07:53:02,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617283073] [2022-11-19 07:53:02,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:02,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:53:02,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:53:02,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:53:02,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:53:02,141 INFO L87 Difference]: Start difference. First operand 65180 states and 88912 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-19 07:53:05,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:05,437 INFO L93 Difference]: Finished difference Result 65186 states and 88917 transitions. [2022-11-19 07:53:05,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:53:05,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 152 [2022-11-19 07:53:05,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:05,666 INFO L225 Difference]: With dead ends: 65186 [2022-11-19 07:53:05,666 INFO L226 Difference]: Without dead ends: 65184 [2022-11-19 07:53:05,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:53:05,694 INFO L413 NwaCegarLoop]: 2527 mSDtfsCounter, 2448 mSDsluCounter, 5041 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 7568 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:05,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2449 Valid, 7568 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:53:05,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65184 states.