./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/bin/utaipan-EQgc7hIp5V --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 a17c24f91a3bb3d64b949ed6598dfddc35ec4ff57290faa768ce9df2bba8e700 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:03:46,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:03:46,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:03:46,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:03:46,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:03:46,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:03:46,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:03:46,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:03:46,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:03:46,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:03:46,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:03:46,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:03:46,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:03:46,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:03:46,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:03:46,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:03:46,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:03:46,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:03:46,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:03:46,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:03:46,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:03:46,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:03:46,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:03:46,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:03:46,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:03:46,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:03:46,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:03:46,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:03:46,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:03:46,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:03:46,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:03:46,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:03:46,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:03:46,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:03:46,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:03:46,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:03:46,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:03:46,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:03:46,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:03:46,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:03:46,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:03:46,486 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:03:46,522 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:03:46,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:03:46,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:03:46,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:03:46,528 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:03:46,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:03:46,538 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:03:46,539 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:03:46,539 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:03:46,539 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:03:46,541 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:03:46,541 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:03:46,541 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:03:46,542 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:03:46,542 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:03:46,542 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:03:46,542 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:03:46,543 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:03:46,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:03:46,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:03:46,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:03:46,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:03:46,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:03:46,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:03:46,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:03:46,546 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:03:46,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:03:46,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:03:46,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:03:46,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:03:46,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:03:46,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:03:46,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:03:46,548 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:03:46,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:03:46,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:03:46,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:03:46,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:03:46,549 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a17c24f91a3bb3d64b949ed6598dfddc35ec4ff57290faa768ce9df2bba8e700 [2021-11-23 03:03:46,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:03:46,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:03:46,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:03:46,921 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:03:46,921 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:03:46,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i [2021-11-23 03:03:46,992 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/bin/utaipan-EQgc7hIp5V/data/7b38779b7/5b89ca63018a45c68ddb2b7452c3b546/FLAG58b218432 [2021-11-23 03:03:48,184 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:03:48,185 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i [2021-11-23 03:03:48,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/bin/utaipan-EQgc7hIp5V/data/7b38779b7/5b89ca63018a45c68ddb2b7452c3b546/FLAG58b218432 [2021-11-23 03:03:48,444 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/bin/utaipan-EQgc7hIp5V/data/7b38779b7/5b89ca63018a45c68ddb2b7452c3b546 [2021-11-23 03:03:48,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:03:48,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:03:48,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:03:48,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:03:48,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:03:48,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:03:48" (1/1) ... [2021-11-23 03:03:48,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aae85b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:48, skipping insertion in model container [2021-11-23 03:03:48,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:03:48" (1/1) ... [2021-11-23 03:03:48,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:03:48,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:03:53,279 WARN L230 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_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396127,396140] [2021-11-23 03:03:53,282 WARN L230 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_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396296,396309] [2021-11-23 03:03:53,283 WARN L230 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_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396463,396476] [2021-11-23 03:03:53,283 WARN L230 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_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396631,396644] [2021-11-23 03:03:53,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:03:53,374 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:03:53,968 WARN L230 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_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396127,396140] [2021-11-23 03:03:53,969 WARN L230 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_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396296,396309] [2021-11-23 03:03:53,969 WARN L230 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_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396463,396476] [2021-11-23 03:03:53,970 WARN L230 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_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i[396631,396644] [2021-11-23 03:03:53,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:03:54,331 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:03:54,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:54 WrapperNode [2021-11-23 03:03:54,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:03:54,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:03:54,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:03:54,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:03:54,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:54" (1/1) ... [2021-11-23 03:03:54,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:54" (1/1) ... [2021-11-23 03:03:54,771 INFO L137 Inliner]: procedures = 537, calls = 2748, calls flagged for inlining = 264, calls inlined = 238, statements flattened = 6333 [2021-11-23 03:03:54,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:03:54,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:03:54,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:03:54,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:03:54,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:54" (1/1) ... [2021-11-23 03:03:54,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:54" (1/1) ... [2021-11-23 03:03:54,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:54" (1/1) ... [2021-11-23 03:03:54,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:54" (1/1) ... [2021-11-23 03:03:55,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:54" (1/1) ... [2021-11-23 03:03:55,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:54" (1/1) ... [2021-11-23 03:03:55,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:54" (1/1) ... [2021-11-23 03:03:55,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:03:55,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:03:55,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:03:55,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:03:55,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:54" (1/1) ... [2021-11-23 03:03:55,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:03:55,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:03:55,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:03:55,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5f8e974-98d4-42ad-9a2d-813b2408e8c9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:03:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-23 03:03:55,222 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-23 03:03:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_get_eeprom_len [2021-11-23 03:03:55,222 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_get_eeprom_len [2021-11-23 03:03:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 03:03:55,223 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 03:03:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_nway_reset [2021-11-23 03:03:55,223 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_nway_reset [2021-11-23 03:03:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 03:03:55,223 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 03:03:55,223 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 03:03:55,224 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 03:03:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2021-11-23 03:03:55,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2021-11-23 03:03:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:03:55,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:03:55,224 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2021-11-23 03:03:55,225 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2021-11-23 03:03:55,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 03:03:55,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 03:03:55,225 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-23 03:03:55,225 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-23 03:03:55,225 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 03:03:55,226 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 03:03:55,226 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-23 03:03:55,226 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-23 03:03:55,226 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-23 03:03:55,226 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-23 03:03:55,226 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_free_irq [2021-11-23 03:03:55,227 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_free_irq [2021-11-23 03:03:55,227 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-23 03:03:55,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-23 03:03:55,227 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-23 03:03:55,227 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-23 03:03:55,227 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_close [2021-11-23 03:03:55,228 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_close [2021-11-23 03:03:55,228 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_get_speed_and_duplex [2021-11-23 03:03:55,228 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_get_speed_and_duplex [2021-11-23 03:03:55,228 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_force_ps [2021-11-23 03:03:55,228 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_force_ps [2021-11-23 03:03:55,228 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-23 03:03:55,229 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-23 03:03:55,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 03:03:55,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 03:03:55,229 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 03:03:55,229 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 03:03:55,229 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-23 03:03:55,230 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-23 03:03:55,230 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 03:03:55,230 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 03:03:55,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 03:03:55,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 03:03:55,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:03:55,230 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-23 03:03:55,231 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-23 03:03:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-11-23 03:03:55,231 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-11-23 03:03:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-23 03:03:55,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-23 03:03:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_write_phy_reg [2021-11-23 03:03:55,232 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_write_phy_reg [2021-11-23 03:03:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-23 03:03:55,232 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-23 03:03:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_vlan_mode [2021-11-23 03:03:55,232 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_vlan_mode [2021-11-23 03:03:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 03:03:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 03:03:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_up [2021-11-23 03:03:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_up [2021-11-23 03:03:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 03:03:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 03:03:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 03:03:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 03:03:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:03:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_tx_timeout [2021-11-23 03:03:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_tx_timeout [2021-11-23 03:03:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_irq_enable [2021-11-23 03:03:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_irq_enable [2021-11-23 03:03:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 03:03:55,235 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 03:03:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_poll_controller [2021-11-23 03:03:55,235 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_poll_controller [2021-11-23 03:03:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:03:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 03:03:55,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 03:03:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:03:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_irq_disable [2021-11-23 03:03:55,236 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_irq_disable [2021-11-23 03:03:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:03:55,236 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:03:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_stats_lock_of_atl2_adapter [2021-11-23 03:03:55,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_stats_lock_of_atl2_adapter [2021-11-23 03:03:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-23 03:03:55,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-23 03:03:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 03:03:55,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 03:03:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-23 03:03:55,237 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-23 03:03:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 03:03:55,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 03:03:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 03:03:55,238 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 03:03:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_shutdown [2021-11-23 03:03:55,238 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_shutdown [2021-11-23 03:03:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure __atl2_vlan_mode [2021-11-23 03:03:55,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __atl2_vlan_mode [2021-11-23 03:03:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 03:03:55,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 03:03:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:03:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-23 03:03:55,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-23 03:03:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 03:03:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 03:03:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-23 03:03:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-23 03:03:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:03:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-23 03:03:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-23 03:03:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 03:03:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 03:03:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 03:03:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 03:03:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:03:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 03:03:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_set_multi [2021-11-23 03:03:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_set_multi [2021-11-23 03:03:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_phy_init [2021-11-23 03:03:55,242 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_phy_init [2021-11-23 03:03:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-23 03:03:55,242 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-23 03:03:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_configure [2021-11-23 03:03:55,242 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_configure [2021-11-23 03:03:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_reset_hw [2021-11-23 03:03:55,243 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_reset_hw [2021-11-23 03:03:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-23 03:03:55,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-23 03:03:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-23 03:03:55,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-23 03:03:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_open [2021-11-23 03:03:55,243 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_open [2021-11-23 03:03:55,244 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 03:03:55,244 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 03:03:55,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-23 03:03:55,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-23 03:03:55,244 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_validate_option [2021-11-23 03:03:55,244 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_validate_option [2021-11-23 03:03:55,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_stats_lock_of_atl2_adapter [2021-11-23 03:03:55,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_stats_lock_of_atl2_adapter [2021-11-23 03:03:55,245 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 03:03:55,245 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 03:03:55,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:03:55,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:03:55,245 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_intr [2021-11-23 03:03:55,245 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_intr [2021-11-23 03:03:55,246 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 03:03:55,246 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 03:03:55,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:03:55,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:03:55,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:03:55,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:03:55,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 03:03:55,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 03:03:55,247 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-23 03:03:55,247 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-23 03:03:55,247 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-23 03:03:55,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-23 03:03:55,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-23 03:03:55,247 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_remove [2021-11-23 03:03:55,247 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_remove [2021-11-23 03:03:55,248 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_read_eeprom [2021-11-23 03:03:55,248 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_read_eeprom [2021-11-23 03:03:55,248 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-23 03:03:55,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-23 03:03:55,248 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 03:03:55,248 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 03:03:55,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:03:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:03:55,249 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_request_irq [2021-11-23 03:03:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_request_irq [2021-11-23 03:03:55,249 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 03:03:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 03:03:55,249 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_read_phy_reg [2021-11-23 03:03:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_read_phy_reg [2021-11-23 03:03:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies [2021-11-23 03:03:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies [2021-11-23 03:03:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:03:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 03:03:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 03:03:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-23 03:03:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-23 03:03:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-23 03:03:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-23 03:03:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:03:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-23 03:03:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-23 03:03:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_suspend [2021-11-23 03:03:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_suspend [2021-11-23 03:03:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:03:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_reinit_locked [2021-11-23 03:03:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_reinit_locked [2021-11-23 03:03:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 03:03:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 03:03:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 03:03:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 03:03:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 03:03:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 03:03:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_resume [2021-11-23 03:03:55,253 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_resume [2021-11-23 03:03:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 03:03:55,253 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 03:03:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-23 03:03:55,254 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-23 03:03:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_77 [2021-11-23 03:03:55,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_77 [2021-11-23 03:03:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 03:03:55,254 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 03:03:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:03:55,254 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:03:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:03:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:03:55,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:03:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_get_regs_len [2021-11-23 03:03:55,255 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_get_regs_len [2021-11-23 03:03:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_check_eeprom_exist [2021-11-23 03:03:55,255 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_check_eeprom_exist [2021-11-23 03:03:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 03:03:55,255 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 03:03:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_restore_vlan [2021-11-23 03:03:55,256 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_restore_vlan [2021-11-23 03:03:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-23 03:03:55,256 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-23 03:03:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_78 [2021-11-23 03:03:55,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_78 [2021-11-23 03:03:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure init_ring_ptrs [2021-11-23 03:03:55,257 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ring_ptrs [2021-11-23 03:03:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-23 03:03:55,257 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-23 03:03:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-23 03:03:55,257 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-23 03:03:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_free_ring_resources [2021-11-23 03:03:55,257 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_free_ring_resources [2021-11-23 03:03:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 03:03:55,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 03:03:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_down [2021-11-23 03:03:55,258 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_down [2021-11-23 03:03:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-23 03:03:55,258 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-23 03:03:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-23 03:03:55,258 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-23 03:03:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-23 03:03:55,258 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-23 03:03:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 03:03:55,259 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 03:03:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure atl2_init_hw [2021-11-23 03:03:55,259 INFO L138 BoogieDeclarations]: Found implementation of procedure atl2_init_hw [2021-11-23 03:03:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:03:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 03:03:55,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 03:03:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-23 03:03:56,505 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:03:56,514 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:03:56,671 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:04:02,726 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 03:04:03,121 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:04:04,996 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:04:04,996 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-23 03:04:05,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:04:05 BoogieIcfgContainer [2021-11-23 03:04:05,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:04:05,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:04:05,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:04:05,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:04:05,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:03:48" (1/3) ... [2021-11-23 03:04:05,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f24bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:04:05, skipping insertion in model container [2021-11-23 03:04:05,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:54" (2/3) ... [2021-11-23 03:04:05,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f24bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:04:05, skipping insertion in model container [2021-11-23 03:04:05,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:04:05" (3/3) ... [2021-11-23 03:04:05,013 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atlx-atl2.cil.i [2021-11-23 03:04:05,019 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:04:05,019 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 03:04:05,086 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:04:05,101 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:04:05,102 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 03:04:05,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 1758 states, 1012 states have (on average 1.2598814229249011) internal successors, (1275), 1034 states have internal predecessors, (1275), 624 states have call successors, (624), 120 states have call predecessors, (624), 119 states have return successors, (619), 617 states have call predecessors, (619), 619 states have call successors, (619) [2021-11-23 03:04:05,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-23 03:04:05,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:04:05,199 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:04:05,201 INFO L402 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)] === [2021-11-23 03:04:05,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:04:05,206 INFO L85 PathProgramCache]: Analyzing trace with hash -839595547, now seen corresponding path program 1 times [2021-11-23 03:04:05,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:04:05,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099835293] [2021-11-23 03:04:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:04:05,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:04:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:04:06,076 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-23 03:04:06,077 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:04:06,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099835293] [2021-11-23 03:04:06,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099835293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:04:06,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:04:06,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:04:06,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460960071] [2021-11-23 03:04:06,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:04:06,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:04:06,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:04:06,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:04:06,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:04:06,140 INFO L87 Difference]: Start difference. First operand has 1758 states, 1012 states have (on average 1.2598814229249011) internal successors, (1275), 1034 states have internal predecessors, (1275), 624 states have call successors, (624), 120 states have call predecessors, (624), 119 states have return successors, (619), 617 states have call predecessors, (619), 619 states have call successors, (619) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 03:04:13,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:04:14,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:04:14,682 INFO L93 Difference]: Finished difference Result 5003 states and 7245 transitions. [2021-11-23 03:04:14,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:04:14,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2021-11-23 03:04:14,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:04:14,732 INFO L225 Difference]: With dead ends: 5003 [2021-11-23 03:04:14,732 INFO L226 Difference]: Without dead ends: 3262 [2021-11-23 03:04:14,748 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:04:14,763 INFO L933 BasicCegarLoop]: 2774 mSDtfsCounter, 2174 mSDsluCounter, 2476 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 4949 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:04:14,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2174 Valid, 4949 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 624 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-11-23 03:04:14,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2021-11-23 03:04:15,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3257. [2021-11-23 03:04:15,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3257 states, 1876 states have (on average 1.25) internal successors, (2345), 1917 states have internal predecessors, (2345), 1148 states have call successors, (1148), 231 states have call predecessors, (1148), 230 states have return successors, (1145), 1141 states have call predecessors, (1145), 1145 states have call successors, (1145) [2021-11-23 03:04:15,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3257 states to 3257 states and 4638 transitions. [2021-11-23 03:04:15,152 INFO L78 Accepts]: Start accepts. Automaton has 3257 states and 4638 transitions. Word has length 147 [2021-11-23 03:04:15,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:04:15,154 INFO L470 AbstractCegarLoop]: Abstraction has 3257 states and 4638 transitions. [2021-11-23 03:04:15,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 03:04:15,155 INFO L276 IsEmpty]: Start isEmpty. Operand 3257 states and 4638 transitions. [2021-11-23 03:04:15,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-23 03:04:15,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:04:15,160 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:04:15,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:04:15,161 INFO L402 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)] === [2021-11-23 03:04:15,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:04:15,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1168634516, now seen corresponding path program 1 times [2021-11-23 03:04:15,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:04:15,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711074183] [2021-11-23 03:04:15,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:04:15,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:04:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:04:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-23 03:04:15,377 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:04:15,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711074183] [2021-11-23 03:04:15,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711074183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:04:15,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:04:15,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:04:15,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851011965] [2021-11-23 03:04:15,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:04:15,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:04:15,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:04:15,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:04:15,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:04:15,381 INFO L87 Difference]: Start difference. First operand 3257 states and 4638 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 03:04:19,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:04:23,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:04:23,716 INFO L93 Difference]: Finished difference Result 9384 states and 13366 transitions. [2021-11-23 03:04:23,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:04:23,717 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 152 [2021-11-23 03:04:23,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:04:23,779 INFO L225 Difference]: With dead ends: 9384 [2021-11-23 03:04:23,780 INFO L226 Difference]: Without dead ends: 6154 [2021-11-23 03:04:23,799 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:04:23,800 INFO L933 BasicCegarLoop]: 2758 mSDtfsCounter, 2168 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2168 SdHoareTripleChecker+Valid, 4876 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:04:23,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2168 Valid, 4876 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 616 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-11-23 03:04:23,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2021-11-23 03:04:24,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 6121. [2021-11-23 03:04:24,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6121 states, 3538 states have (on average 1.252967778405879) internal successors, (4433), 3625 states have internal predecessors, (4433), 2139 states have call successors, (2139), 452 states have call predecessors, (2139), 441 states have return successors, (2150), 2104 states have call predecessors, (2150), 2136 states have call successors, (2150) [2021-11-23 03:04:24,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6121 states to 6121 states and 8722 transitions. [2021-11-23 03:04:24,332 INFO L78 Accepts]: Start accepts. Automaton has 6121 states and 8722 transitions. Word has length 152 [2021-11-23 03:04:24,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:04:24,335 INFO L470 AbstractCegarLoop]: Abstraction has 6121 states and 8722 transitions. [2021-11-23 03:04:24,335 INFO L471 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 03:04:24,341 INFO L276 IsEmpty]: Start isEmpty. Operand 6121 states and 8722 transitions. [2021-11-23 03:04:24,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-23 03:04:24,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:04:24,350 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:04:24,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:04:24,351 INFO L402 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)] === [2021-11-23 03:04:24,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:04:24,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1734928910, now seen corresponding path program 1 times [2021-11-23 03:04:24,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:04:24,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482448235] [2021-11-23 03:04:24,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:04:24,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:04:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:04:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-23 03:04:24,665 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:04:24,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482448235] [2021-11-23 03:04:24,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482448235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:04:24,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:04:24,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:04:24,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402525820] [2021-11-23 03:04:24,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:04:24,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:04:24,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:04:24,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:04:24,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:04:24,675 INFO L87 Difference]: Start difference. First operand 6121 states and 8722 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 03:04:30,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:04:32,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:04:32,142 INFO L93 Difference]: Finished difference Result 18052 states and 25766 transitions. [2021-11-23 03:04:32,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:04:32,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 163 [2021-11-23 03:04:32,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:04:32,258 INFO L225 Difference]: With dead ends: 18052 [2021-11-23 03:04:32,258 INFO L226 Difference]: Without dead ends: 11958 [2021-11-23 03:04:32,296 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:04:32,297 INFO L933 BasicCegarLoop]: 2838 mSDtfsCounter, 2200 mSDsluCounter, 2454 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2200 SdHoareTripleChecker+Valid, 4994 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:04:32,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2200 Valid, 4994 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 630 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-23 03:04:32,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11958 states. [2021-11-23 03:04:33,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11958 to 11921. [2021-11-23 03:04:33,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11921 states, 6898 states have (on average 1.2526819367932733) internal successors, (8641), 7077 states have internal predecessors, (8641), 4159 states have call successors, (4159), 890 states have call predecessors, (4159), 861 states have return successors, (4224), 4070 states have call predecessors, (4224), 4156 states have call successors, (4224) [2021-11-23 03:04:33,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11921 states to 11921 states and 17024 transitions. [2021-11-23 03:04:33,226 INFO L78 Accepts]: Start accepts. Automaton has 11921 states and 17024 transitions. Word has length 163 [2021-11-23 03:04:33,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:04:33,228 INFO L470 AbstractCegarLoop]: Abstraction has 11921 states and 17024 transitions. [2021-11-23 03:04:33,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 03:04:33,230 INFO L276 IsEmpty]: Start isEmpty. Operand 11921 states and 17024 transitions. [2021-11-23 03:04:33,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-23 03:04:33,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:04:33,236 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:04:33,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:04:33,237 INFO L402 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)] === [2021-11-23 03:04:33,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:04:33,238 INFO L85 PathProgramCache]: Analyzing trace with hash 310236256, now seen corresponding path program 1 times [2021-11-23 03:04:33,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:04:33,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144660709] [2021-11-23 03:04:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:04:33,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:04:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:04:33,490 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-23 03:04:33,490 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:04:33,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144660709] [2021-11-23 03:04:33,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144660709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:04:33,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:04:33,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:04:33,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286571833] [2021-11-23 03:04:33,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:04:33,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:04:33,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:04:33,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:04:33,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:04:33,498 INFO L87 Difference]: Start difference. First operand 11921 states and 17024 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 03:04:36,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:04:41,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:04:41,330 INFO L93 Difference]: Finished difference Result 26003 states and 36744 transitions. [2021-11-23 03:04:41,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:04:41,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 166 [2021-11-23 03:04:41,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:04:41,455 INFO L225 Difference]: With dead ends: 26003 [2021-11-23 03:04:41,455 INFO L226 Difference]: Without dead ends: 14109 [2021-11-23 03:04:41,522 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:04:41,523 INFO L933 BasicCegarLoop]: 2673 mSDtfsCounter, 1588 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 4796 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:04:41,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1588 Valid, 4796 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 674 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-23 03:04:41,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14109 states. [2021-11-23 03:04:42,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14109 to 14079. [2021-11-23 03:04:42,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14079 states, 7977 states have (on average 1.2187539175128494) internal successors, (9722), 8209 states have internal predecessors, (9722), 4931 states have call successors, (4931), 1212 states have call predecessors, (4931), 1168 states have return successors, (5026), 4804 states have call predecessors, (5026), 4928 states have call successors, (5026) [2021-11-23 03:04:42,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14079 states to 14079 states and 19679 transitions. [2021-11-23 03:04:42,610 INFO L78 Accepts]: Start accepts. Automaton has 14079 states and 19679 transitions. Word has length 166 [2021-11-23 03:04:42,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:04:42,611 INFO L470 AbstractCegarLoop]: Abstraction has 14079 states and 19679 transitions. [2021-11-23 03:04:42,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 03:04:42,611 INFO L276 IsEmpty]: Start isEmpty. Operand 14079 states and 19679 transitions. [2021-11-23 03:04:42,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-23 03:04:42,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:04:42,618 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:04:42,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:04:42,619 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:04:42,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:04:42,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1791672640, now seen corresponding path program 1 times [2021-11-23 03:04:42,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:04:42,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696387364] [2021-11-23 03:04:42,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:04:42,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:04:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:04:42,948 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2021-11-23 03:04:42,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:04:42,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696387364] [2021-11-23 03:04:42,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696387364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:04:42,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:04:42,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:04:42,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44503831] [2021-11-23 03:04:42,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:04:42,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:04:42,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:04:42,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:04:42,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:04:42,951 INFO L87 Difference]: Start difference. First operand 14079 states and 19679 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 03:04:49,386 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:04:56,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:04:56,108 INFO L93 Difference]: Finished difference Result 24042 states and 33737 transitions. [2021-11-23 03:04:56,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:04:56,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 185 [2021-11-23 03:04:56,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:04:56,259 INFO L225 Difference]: With dead ends: 24042 [2021-11-23 03:04:56,259 INFO L226 Difference]: Without dead ends: 24040 [2021-11-23 03:04:56,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:04:56,276 INFO L933 BasicCegarLoop]: 3252 mSDtfsCounter, 2208 mSDsluCounter, 9760 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2222 SdHoareTripleChecker+Valid, 11885 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:04:56,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2222 Valid, 11885 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1563 Invalid, 1 Unknown, 0 Unchecked, 12.4s Time] [2021-11-23 03:04:56,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24040 states. [2021-11-23 03:04:57,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24040 to 24025. [2021-11-23 03:04:57,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24025 states, 13639 states have (on average 1.2230368795366229) internal successors, (16681), 14044 states have internal predecessors, (16681), 8390 states have call successors, (8390), 2067 states have call predecessors, (8390), 1993 states have return successors, (8652), 8162 states have call predecessors, (8652), 8384 states have call successors, (8652) [2021-11-23 03:04:58,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24025 states to 24025 states and 33723 transitions. [2021-11-23 03:04:58,058 INFO L78 Accepts]: Start accepts. Automaton has 24025 states and 33723 transitions. Word has length 185 [2021-11-23 03:04:58,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:04:58,059 INFO L470 AbstractCegarLoop]: Abstraction has 24025 states and 33723 transitions. [2021-11-23 03:04:58,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 03:04:58,071 INFO L276 IsEmpty]: Start isEmpty. Operand 24025 states and 33723 transitions. [2021-11-23 03:04:58,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-23 03:04:58,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:04:58,086 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:04:58,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:04:58,087 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:04:58,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:04:58,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1803646208, now seen corresponding path program 1 times [2021-11-23 03:04:58,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:04:58,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458532280] [2021-11-23 03:04:58,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:04:58,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:04:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:04:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2021-11-23 03:04:58,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:04:58,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458532280] [2021-11-23 03:04:58,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458532280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:04:58,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:04:58,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:04:58,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516722892] [2021-11-23 03:04:58,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:04:58,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:04:58,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:04:58,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:04:58,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:04:58,625 INFO L87 Difference]: Start difference. First operand 24025 states and 33723 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 03:05:08,814 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:05:10,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:05:10,597 INFO L93 Difference]: Finished difference Result 24035 states and 33732 transitions. [2021-11-23 03:05:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:05:10,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 190 [2021-11-23 03:05:10,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:05:10,730 INFO L225 Difference]: With dead ends: 24035 [2021-11-23 03:05:10,730 INFO L226 Difference]: Without dead ends: 24033 [2021-11-23 03:05:10,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:05:10,743 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2435 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2448 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:05:10,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2448 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 948 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2021-11-23 03:05:10,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24033 states. [2021-11-23 03:05:12,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24033 to 24033. [2021-11-23 03:05:12,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24033 states, 13645 states have (on average 1.222938805423232) internal successors, (16687), 14050 states have internal predecessors, (16687), 8390 states have call successors, (8390), 2069 states have call predecessors, (8390), 1995 states have return successors, (8652), 8162 states have call predecessors, (8652), 8384 states have call successors, (8652) [2021-11-23 03:05:12,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24033 states to 24033 states and 33729 transitions. [2021-11-23 03:05:12,386 INFO L78 Accepts]: Start accepts. Automaton has 24033 states and 33729 transitions. Word has length 190 [2021-11-23 03:05:12,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:05:12,387 INFO L470 AbstractCegarLoop]: Abstraction has 24033 states and 33729 transitions. [2021-11-23 03:05:12,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 03:05:12,387 INFO L276 IsEmpty]: Start isEmpty. Operand 24033 states and 33729 transitions. [2021-11-23 03:05:12,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-23 03:05:12,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:05:12,392 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:05:12,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:05:12,392 INFO L402 AbstractCegarLoop]: === Iteration 7 === 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)] === [2021-11-23 03:05:12,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:05:12,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1158860008, now seen corresponding path program 1 times [2021-11-23 03:05:12,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:05:12,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075270551] [2021-11-23 03:05:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:05:12,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:05:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:05:12,712 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2021-11-23 03:05:12,713 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:05:12,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075270551] [2021-11-23 03:05:12,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075270551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:05:12,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:05:12,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:05:12,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927812538] [2021-11-23 03:05:12,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:05:12,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:05:12,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:05:12,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:05:12,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:05:12,718 INFO L87 Difference]: Start difference. First operand 24033 states and 33729 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-23 03:05:18,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:05:22,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:05:22,152 INFO L93 Difference]: Finished difference Result 53857 states and 75676 transitions. [2021-11-23 03:05:22,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:05:22,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 187 [2021-11-23 03:05:22,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:05:22,317 INFO L225 Difference]: With dead ends: 53857 [2021-11-23 03:05:22,317 INFO L226 Difference]: Without dead ends: 29851 [2021-11-23 03:05:22,409 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:05:22,411 INFO L933 BasicCegarLoop]: 3383 mSDtfsCounter, 1564 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 5532 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:05:22,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1564 Valid, 5532 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 835 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2021-11-23 03:05:22,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29851 states. [2021-11-23 03:05:24,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29851 to 29775. [2021-11-23 03:05:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29775 states, 17267 states have (on average 1.236462616551804) internal successors, (21350), 17756 states have internal predecessors, (21350), 10017 states have call successors, (10017), 2560 states have call predecessors, (10017), 2488 states have return successors, (10267), 9743 states have call predecessors, (10267), 10011 states have call successors, (10267) [2021-11-23 03:05:24,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29775 states to 29775 states and 41634 transitions. [2021-11-23 03:05:24,362 INFO L78 Accepts]: Start accepts. Automaton has 29775 states and 41634 transitions. Word has length 187 [2021-11-23 03:05:24,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:05:24,363 INFO L470 AbstractCegarLoop]: Abstraction has 29775 states and 41634 transitions. [2021-11-23 03:05:24,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-23 03:05:24,363 INFO L276 IsEmpty]: Start isEmpty. Operand 29775 states and 41634 transitions. [2021-11-23 03:05:24,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-23 03:05:24,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:05:24,367 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:05:24,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:05:24,368 INFO L402 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)] === [2021-11-23 03:05:24,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:05:24,369 INFO L85 PathProgramCache]: Analyzing trace with hash 934952576, now seen corresponding path program 1 times [2021-11-23 03:05:24,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:05:24,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339822286] [2021-11-23 03:05:24,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:05:24,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:05:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:05:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2021-11-23 03:05:24,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:05:24,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339822286] [2021-11-23 03:05:24,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339822286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:05:24,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:05:24,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:05:24,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886457486] [2021-11-23 03:05:24,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:05:24,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:05:24,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:05:24,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:05:24,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:05:24,682 INFO L87 Difference]: Start difference. First operand 29775 states and 41634 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 03:05:28,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:05:30,723 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:05:33,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:05:36,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:05:40,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:05:40,753 INFO L93 Difference]: Finished difference Result 34894 states and 48503 transitions. [2021-11-23 03:05:40,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:05:40,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 195 [2021-11-23 03:05:40,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:05:41,022 INFO L225 Difference]: With dead ends: 34894 [2021-11-23 03:05:41,022 INFO L226 Difference]: Without dead ends: 34892 [2021-11-23 03:05:41,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:05:41,040 INFO L933 BasicCegarLoop]: 2703 mSDtfsCounter, 1579 mSDsluCounter, 8481 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 10234 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:05:41,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1591 Valid, 10234 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1295 Invalid, 1 Unknown, 0 Unchecked, 15.2s Time] [2021-11-23 03:05:41,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34892 states. [2021-11-23 03:05:42,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34892 to 34885. [2021-11-23 03:05:42,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34885 states, 20164 states have (on average 1.2298155127950803) internal successors, (24798), 20747 states have internal predecessors, (24798), 11710 states have call successors, (11710), 3095 states have call predecessors, (11710), 3008 states have return successors, (11989), 11381 states have call predecessors, (11989), 11701 states have call successors, (11989) [2021-11-23 03:05:43,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34885 states to 34885 states and 48497 transitions. [2021-11-23 03:05:43,281 INFO L78 Accepts]: Start accepts. Automaton has 34885 states and 48497 transitions. Word has length 195 [2021-11-23 03:05:43,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:05:43,282 INFO L470 AbstractCegarLoop]: Abstraction has 34885 states and 48497 transitions. [2021-11-23 03:05:43,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 03:05:43,283 INFO L276 IsEmpty]: Start isEmpty. Operand 34885 states and 48497 transitions. [2021-11-23 03:05:43,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-23 03:05:43,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:05:43,288 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:05:43,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:05:43,289 INFO L402 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)] === [2021-11-23 03:05:43,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:05:43,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1769472425, now seen corresponding path program 1 times [2021-11-23 03:05:43,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:05:43,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336237589] [2021-11-23 03:05:43,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:05:43,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:05:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:05:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2021-11-23 03:05:43,526 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:05:43,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336237589] [2021-11-23 03:05:43,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336237589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:05:43,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:05:43,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:05:43,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800244195] [2021-11-23 03:05:43,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:05:43,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:05:43,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:05:43,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:05:43,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:05:43,529 INFO L87 Difference]: Start difference. First operand 34885 states and 48497 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 03:05:48,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:05:50,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:05:56,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:05:56,783 INFO L93 Difference]: Finished difference Result 35274 states and 48958 transitions. [2021-11-23 03:05:56,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:05:56,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 209 [2021-11-23 03:05:56,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:05:56,940 INFO L225 Difference]: With dead ends: 35274 [2021-11-23 03:05:56,940 INFO L226 Difference]: Without dead ends: 35272 [2021-11-23 03:05:56,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:05:56,962 INFO L933 BasicCegarLoop]: 2703 mSDtfsCounter, 1574 mSDsluCounter, 8478 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 10234 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:05:56,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1586 Valid, 10234 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1291 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time] [2021-11-23 03:05:57,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35272 states. [2021-11-23 03:05:58,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35272 to 35249. [2021-11-23 03:05:58,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35249 states, 20383 states have (on average 1.229897463572585) internal successors, (25069), 20974 states have internal predecessors, (25069), 11794 states have call successors, (11794), 3156 states have call predecessors, (11794), 3069 states have return successors, (12073), 11457 states have call predecessors, (12073), 11785 states have call successors, (12073) [2021-11-23 03:05:59,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35249 states to 35249 states and 48936 transitions. [2021-11-23 03:05:59,126 INFO L78 Accepts]: Start accepts. Automaton has 35249 states and 48936 transitions. Word has length 209 [2021-11-23 03:05:59,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:05:59,129 INFO L470 AbstractCegarLoop]: Abstraction has 35249 states and 48936 transitions. [2021-11-23 03:05:59,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 03:05:59,130 INFO L276 IsEmpty]: Start isEmpty. Operand 35249 states and 48936 transitions. [2021-11-23 03:05:59,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-23 03:05:59,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:05:59,140 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:05:59,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:05:59,140 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:05:59,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:05:59,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1561404169, now seen corresponding path program 1 times [2021-11-23 03:05:59,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:05:59,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448539072] [2021-11-23 03:05:59,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:05:59,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:05:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:05:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2021-11-23 03:05:59,390 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:05:59,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448539072] [2021-11-23 03:05:59,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448539072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:05:59,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:05:59,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:05:59,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255607838] [2021-11-23 03:05:59,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:05:59,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:05:59,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:05:59,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:05:59,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:05:59,394 INFO L87 Difference]: Start difference. First operand 35249 states and 48936 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 03:06:07,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:06:09,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:06:14,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:14,132 INFO L93 Difference]: Finished difference Result 35263 states and 48949 transitions. [2021-11-23 03:06:14,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:06:14,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 214 [2021-11-23 03:06:14,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:14,275 INFO L225 Difference]: With dead ends: 35263 [2021-11-23 03:06:14,275 INFO L226 Difference]: Without dead ends: 35261 [2021-11-23 03:06:14,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:06:14,294 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2431 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2441 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:14,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2441 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 947 Invalid, 2 Unknown, 0 Unchecked, 13.5s Time] [2021-11-23 03:06:14,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35261 states. [2021-11-23 03:06:15,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35261 to 35261. [2021-11-23 03:06:15,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35261 states, 20392 states have (on average 1.2297959984307572) internal successors, (25078), 20983 states have internal predecessors, (25078), 11794 states have call successors, (11794), 3159 states have call predecessors, (11794), 3072 states have return successors, (12073), 11457 states have call predecessors, (12073), 11785 states have call successors, (12073) [2021-11-23 03:06:15,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35261 states to 35261 states and 48945 transitions. [2021-11-23 03:06:15,905 INFO L78 Accepts]: Start accepts. Automaton has 35261 states and 48945 transitions. Word has length 214 [2021-11-23 03:06:15,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:15,906 INFO L470 AbstractCegarLoop]: Abstraction has 35261 states and 48945 transitions. [2021-11-23 03:06:15,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 03:06:15,907 INFO L276 IsEmpty]: Start isEmpty. Operand 35261 states and 48945 transitions. [2021-11-23 03:06:15,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-23 03:06:15,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:15,912 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:15,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:06:15,913 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:06:15,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:15,913 INFO L85 PathProgramCache]: Analyzing trace with hash -495307433, now seen corresponding path program 1 times [2021-11-23 03:06:15,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:06:15,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451593961] [2021-11-23 03:06:15,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:15,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:06:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2021-11-23 03:06:16,338 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:06:16,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451593961] [2021-11-23 03:06:16,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451593961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:16,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:16,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:06:16,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085878962] [2021-11-23 03:06:16,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:16,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:06:16,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:06:16,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:06:16,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:06:16,342 INFO L87 Difference]: Start difference. First operand 35261 states and 48945 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 03:06:25,124 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:06:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:28,925 INFO L93 Difference]: Finished difference Result 35275 states and 48958 transitions. [2021-11-23 03:06:28,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:06:28,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 219 [2021-11-23 03:06:28,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:29,043 INFO L225 Difference]: With dead ends: 35275 [2021-11-23 03:06:29,043 INFO L226 Difference]: Without dead ends: 35273 [2021-11-23 03:06:29,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:06:29,057 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2431 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2440 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:29,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2440 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2021-11-23 03:06:29,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35273 states. [2021-11-23 03:06:30,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35273 to 35273. [2021-11-23 03:06:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35273 states, 20401 states have (on average 1.2296946228126073) internal successors, (25087), 20992 states have internal predecessors, (25087), 11794 states have call successors, (11794), 3162 states have call predecessors, (11794), 3075 states have return successors, (12073), 11457 states have call predecessors, (12073), 11785 states have call successors, (12073) [2021-11-23 03:06:30,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35273 states to 35273 states and 48954 transitions. [2021-11-23 03:06:30,750 INFO L78 Accepts]: Start accepts. Automaton has 35273 states and 48954 transitions. Word has length 219 [2021-11-23 03:06:30,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:30,751 INFO L470 AbstractCegarLoop]: Abstraction has 35273 states and 48954 transitions. [2021-11-23 03:06:30,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 03:06:30,751 INFO L276 IsEmpty]: Start isEmpty. Operand 35273 states and 48954 transitions. [2021-11-23 03:06:30,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-23 03:06:30,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:30,756 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 7, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:30,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 03:06:30,757 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:06:30,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:30,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1826391159, now seen corresponding path program 1 times [2021-11-23 03:06:30,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:06:30,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864201159] [2021-11-23 03:06:30,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:30,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:06:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2021-11-23 03:06:30,999 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:06:30,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864201159] [2021-11-23 03:06:30,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864201159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:31,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:31,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:06:31,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043125684] [2021-11-23 03:06:31,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:31,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:06:31,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:06:31,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:06:31,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:06:31,002 INFO L87 Difference]: Start difference. First operand 35273 states and 48954 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 03:06:35,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:06:38,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:06:40,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:06:42,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:06:46,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:46,416 INFO L93 Difference]: Finished difference Result 35287 states and 48967 transitions. [2021-11-23 03:06:46,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:06:46,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 224 [2021-11-23 03:06:46,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:46,553 INFO L225 Difference]: With dead ends: 35287 [2021-11-23 03:06:46,553 INFO L226 Difference]: Without dead ends: 35285 [2021-11-23 03:06:46,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:06:46,567 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2431 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2439 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:46,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2439 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 947 Invalid, 2 Unknown, 0 Unchecked, 14.0s Time] [2021-11-23 03:06:46,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35285 states. [2021-11-23 03:06:48,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35285 to 35285. [2021-11-23 03:06:48,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35285 states, 20410 states have (on average 1.229593336599706) internal successors, (25096), 21001 states have internal predecessors, (25096), 11794 states have call successors, (11794), 3165 states have call predecessors, (11794), 3078 states have return successors, (12073), 11457 states have call predecessors, (12073), 11785 states have call successors, (12073) [2021-11-23 03:06:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35285 states to 35285 states and 48963 transitions. [2021-11-23 03:06:48,307 INFO L78 Accepts]: Start accepts. Automaton has 35285 states and 48963 transitions. Word has length 224 [2021-11-23 03:06:48,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:48,308 INFO L470 AbstractCegarLoop]: Abstraction has 35285 states and 48963 transitions. [2021-11-23 03:06:48,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 03:06:48,309 INFO L276 IsEmpty]: Start isEmpty. Operand 35285 states and 48963 transitions. [2021-11-23 03:06:48,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-23 03:06:48,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:48,313 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 8, 7, 7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:06:48,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 03:06:48,314 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:06:48,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:48,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1396351913, now seen corresponding path program 1 times [2021-11-23 03:06:48,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:06:48,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353187496] [2021-11-23 03:06:48,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:48,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:06:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2021-11-23 03:06:48,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:06:48,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353187496] [2021-11-23 03:06:48,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353187496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:48,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:48,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:06:48,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451747132] [2021-11-23 03:06:48,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:48,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:06:48,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:06:48,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:06:48,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:06:48,530 INFO L87 Difference]: Start difference. First operand 35285 states and 48963 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-23 03:06:52,684 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:06:54,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:06:57,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:03,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:03,215 INFO L93 Difference]: Finished difference Result 35298 states and 48972 transitions. [2021-11-23 03:07:03,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:07:03,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 229 [2021-11-23 03:07:03,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:03,327 INFO L225 Difference]: With dead ends: 35298 [2021-11-23 03:07:03,327 INFO L226 Difference]: Without dead ends: 35296 [2021-11-23 03:07:03,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:07:03,341 INFO L933 BasicCegarLoop]: 2703 mSDtfsCounter, 1575 mSDsluCounter, 8481 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 10234 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:03,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1582 Valid, 10234 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1295 Invalid, 1 Unknown, 0 Unchecked, 13.5s Time] [2021-11-23 03:07:03,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35296 states. [2021-11-23 03:07:04,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35296 to 35289. [2021-11-23 03:07:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35289 states, 20413 states have (on average 1.2295595943761328) internal successors, (25099), 21004 states have internal predecessors, (25099), 11794 states have call successors, (11794), 3166 states have call predecessors, (11794), 3079 states have return successors, (12073), 11457 states have call predecessors, (12073), 11785 states have call successors, (12073) [2021-11-23 03:07:05,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35289 states to 35289 states and 48966 transitions. [2021-11-23 03:07:05,008 INFO L78 Accepts]: Start accepts. Automaton has 35289 states and 48966 transitions. Word has length 229 [2021-11-23 03:07:05,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:05,009 INFO L470 AbstractCegarLoop]: Abstraction has 35289 states and 48966 transitions. [2021-11-23 03:07:05,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-23 03:07:05,009 INFO L276 IsEmpty]: Start isEmpty. Operand 35289 states and 48966 transitions. [2021-11-23 03:07:05,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-23 03:07:05,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:05,013 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 9, 8, 8, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:07:05,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 03:07:05,014 INFO L402 AbstractCegarLoop]: === Iteration 14 === 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)] === [2021-11-23 03:07:05,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:05,015 INFO L85 PathProgramCache]: Analyzing trace with hash 217244681, now seen corresponding path program 1 times [2021-11-23 03:07:05,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:05,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081296169] [2021-11-23 03:07:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:05,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:05,237 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-11-23 03:07:05,237 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:05,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081296169] [2021-11-23 03:07:05,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081296169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:05,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:07:05,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:07:05,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151730277] [2021-11-23 03:07:05,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:05,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:07:05,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:05,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:07:05,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:07:05,240 INFO L87 Difference]: Start difference. First operand 35289 states and 48966 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-23 03:07:09,484 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:13,255 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:15,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:19,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:19,863 INFO L93 Difference]: Finished difference Result 35303 states and 48979 transitions. [2021-11-23 03:07:19,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:07:19,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 234 [2021-11-23 03:07:19,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:19,974 INFO L225 Difference]: With dead ends: 35303 [2021-11-23 03:07:19,975 INFO L226 Difference]: Without dead ends: 35301 [2021-11-23 03:07:19,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:07:19,989 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2431 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2437 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:19,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2437 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 947 Invalid, 2 Unknown, 0 Unchecked, 13.4s Time] [2021-11-23 03:07:20,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35301 states. [2021-11-23 03:07:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35301 to 35301. [2021-11-23 03:07:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35301 states, 20422 states have (on average 1.2294584271863676) internal successors, (25108), 21013 states have internal predecessors, (25108), 11794 states have call successors, (11794), 3169 states have call predecessors, (11794), 3082 states have return successors, (12073), 11457 states have call predecessors, (12073), 11785 states have call successors, (12073) [2021-11-23 03:07:21,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35301 states to 35301 states and 48975 transitions. [2021-11-23 03:07:21,870 INFO L78 Accepts]: Start accepts. Automaton has 35301 states and 48975 transitions. Word has length 234 [2021-11-23 03:07:21,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:21,871 INFO L470 AbstractCegarLoop]: Abstraction has 35301 states and 48975 transitions. [2021-11-23 03:07:21,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-23 03:07:21,871 INFO L276 IsEmpty]: Start isEmpty. Operand 35301 states and 48975 transitions. [2021-11-23 03:07:21,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-23 03:07:21,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:21,874 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 10, 9, 9, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:07:21,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 03:07:21,875 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:07:21,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:21,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1325232983, now seen corresponding path program 1 times [2021-11-23 03:07:21,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:21,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422758217] [2021-11-23 03:07:21,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:21,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2021-11-23 03:07:22,099 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:22,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422758217] [2021-11-23 03:07:22,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422758217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:22,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:07:22,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:07:22,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276067610] [2021-11-23 03:07:22,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:22,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:07:22,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:22,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:07:22,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:07:22,102 INFO L87 Difference]: Start difference. First operand 35301 states and 48975 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 03:07:26,148 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:30,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:35,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:35,448 INFO L93 Difference]: Finished difference Result 35315 states and 48988 transitions. [2021-11-23 03:07:35,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:07:35,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 239 [2021-11-23 03:07:35,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:35,571 INFO L225 Difference]: With dead ends: 35315 [2021-11-23 03:07:35,571 INFO L226 Difference]: Without dead ends: 35313 [2021-11-23 03:07:35,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:07:35,585 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2431 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2436 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:35,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2436 Valid, 6533 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 948 Invalid, 1 Unknown, 0 Unchecked, 11.6s Time] [2021-11-23 03:07:35,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35313 states. [2021-11-23 03:07:37,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35313 to 35313. [2021-11-23 03:07:37,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35313 states, 20431 states have (on average 1.2293573491263277) internal successors, (25117), 21022 states have internal predecessors, (25117), 11794 states have call successors, (11794), 3172 states have call predecessors, (11794), 3085 states have return successors, (12073), 11457 states have call predecessors, (12073), 11785 states have call successors, (12073) [2021-11-23 03:07:37,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35313 states to 35313 states and 48984 transitions. [2021-11-23 03:07:37,565 INFO L78 Accepts]: Start accepts. Automaton has 35313 states and 48984 transitions. Word has length 239 [2021-11-23 03:07:37,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:37,566 INFO L470 AbstractCegarLoop]: Abstraction has 35313 states and 48984 transitions. [2021-11-23 03:07:37,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 03:07:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 35313 states and 48984 transitions. [2021-11-23 03:07:37,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-23 03:07:37,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:37,572 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:07:37,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 03:07:37,572 INFO L402 AbstractCegarLoop]: === Iteration 16 === 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)] === [2021-11-23 03:07:37,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:37,573 INFO L85 PathProgramCache]: Analyzing trace with hash -537173690, now seen corresponding path program 1 times [2021-11-23 03:07:37,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:37,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602573008] [2021-11-23 03:07:37,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:37,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:37,766 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2021-11-23 03:07:37,766 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:37,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602573008] [2021-11-23 03:07:37,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602573008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:37,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:07:37,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:07:37,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552044493] [2021-11-23 03:07:37,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:37,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:07:37,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:37,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:07:37,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:07:37,769 INFO L87 Difference]: Start difference. First operand 35313 states and 48984 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-23 03:07:41,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:45,679 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:49,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:49,915 INFO L93 Difference]: Finished difference Result 81570 states and 113124 transitions. [2021-11-23 03:07:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:07:49,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 243 [2021-11-23 03:07:49,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:50,152 INFO L225 Difference]: With dead ends: 81570 [2021-11-23 03:07:50,152 INFO L226 Difference]: Without dead ends: 46340 [2021-11-23 03:07:50,291 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:07:50,291 INFO L933 BasicCegarLoop]: 3502 mSDtfsCounter, 1562 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 5644 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:50,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1562 Valid, 5644 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 869 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2021-11-23 03:07:50,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46340 states. [2021-11-23 03:07:52,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46340 to 46159. [2021-11-23 03:07:52,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46159 states, 26928 states have (on average 1.233288770053476) internal successors, (33210), 27693 states have internal predecessors, (33210), 15118 states have call successors, (15118), 4209 states have call predecessors, (15118), 4110 states have return successors, (15417), 14685 states have call predecessors, (15417), 15109 states have call successors, (15417) [2021-11-23 03:07:52,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46159 states to 46159 states and 63745 transitions. [2021-11-23 03:07:52,875 INFO L78 Accepts]: Start accepts. Automaton has 46159 states and 63745 transitions. Word has length 243 [2021-11-23 03:07:52,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:52,876 INFO L470 AbstractCegarLoop]: Abstraction has 46159 states and 63745 transitions. [2021-11-23 03:07:52,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-23 03:07:52,877 INFO L276 IsEmpty]: Start isEmpty. Operand 46159 states and 63745 transitions. [2021-11-23 03:07:52,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-23 03:07:52,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:52,880 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 11, 10, 10, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:07:52,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 03:07:52,880 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:07:52,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:52,881 INFO L85 PathProgramCache]: Analyzing trace with hash 25181568, now seen corresponding path program 1 times [2021-11-23 03:07:52,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:52,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641546472] [2021-11-23 03:07:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:52,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2021-11-23 03:07:53,411 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:53,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641546472] [2021-11-23 03:07:53,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641546472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:53,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:07:53,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:07:53,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497776346] [2021-11-23 03:07:53,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:53,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:07:53,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:53,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:07:53,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:07:53,415 INFO L87 Difference]: Start difference. First operand 46159 states and 63745 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-23 03:07:59,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:02,356 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:03,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:07,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:14,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:17,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:08:17,043 INFO L93 Difference]: Finished difference Result 85573 states and 118598 transitions. [2021-11-23 03:08:17,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:08:17,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 235 [2021-11-23 03:08:17,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:08:17,462 INFO L225 Difference]: With dead ends: 85573 [2021-11-23 03:08:17,462 INFO L226 Difference]: Without dead ends: 85571 [2021-11-23 03:08:17,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:08:17,496 INFO L933 BasicCegarLoop]: 2766 mSDtfsCounter, 2352 mSDsluCounter, 8580 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2356 SdHoareTripleChecker+Valid, 10423 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:08:17,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2356 Valid, 10423 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1252 Invalid, 3 Unknown, 0 Unchecked, 20.1s Time] [2021-11-23 03:08:17,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85571 states. [2021-11-23 03:08:22,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85571 to 85563. [2021-11-23 03:08:22,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85563 states, 49952 states have (on average 1.2365070467648942) internal successors, (61766), 51355 states have internal predecessors, (61766), 28127 states have call successors, (28127), 7664 states have call predecessors, (28127), 7481 states have return successors, (28696), 27340 states have call predecessors, (28696), 28112 states have call successors, (28696) [2021-11-23 03:08:23,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85563 states to 85563 states and 118589 transitions. [2021-11-23 03:08:23,259 INFO L78 Accepts]: Start accepts. Automaton has 85563 states and 118589 transitions. Word has length 235 [2021-11-23 03:08:23,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:08:23,260 INFO L470 AbstractCegarLoop]: Abstraction has 85563 states and 118589 transitions. [2021-11-23 03:08:23,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-23 03:08:23,260 INFO L276 IsEmpty]: Start isEmpty. Operand 85563 states and 118589 transitions. [2021-11-23 03:08:23,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-23 03:08:23,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:23,265 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 12, 11, 11, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:08:23,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 03:08:23,265 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 03:08:23,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:23,266 INFO L85 PathProgramCache]: Analyzing trace with hash -718627904, now seen corresponding path program 1 times [2021-11-23 03:08:23,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:08:23,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225340003] [2021-11-23 03:08:23,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:23,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:08:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 983 trivial. 0 not checked. [2021-11-23 03:08:23,562 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:08:23,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225340003] [2021-11-23 03:08:23,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225340003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:08:23,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:08:23,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:08:23,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039133841] [2021-11-23 03:08:23,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:08:23,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:08:23,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:08:23,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:08:23,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:08:23,566 INFO L87 Difference]: Start difference. First operand 85563 states and 118589 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 03:08:27,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:29,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:30,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:33,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:39,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:44,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:08:44,031 INFO L93 Difference]: Finished difference Result 85576 states and 118598 transitions. [2021-11-23 03:08:44,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:08:44,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 240 [2021-11-23 03:08:44,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:08:44,392 INFO L225 Difference]: With dead ends: 85576 [2021-11-23 03:08:44,392 INFO L226 Difference]: Without dead ends: 85574 [2021-11-23 03:08:44,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:08:44,427 INFO L933 BasicCegarLoop]: 2703 mSDtfsCounter, 1579 mSDsluCounter, 8481 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 10234 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:08:44,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1582 Valid, 10234 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1295 Invalid, 1 Unknown, 0 Unchecked, 16.7s Time] [2021-11-23 03:08:44,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85574 states. [2021-11-23 03:08:49,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85574 to 85567. [2021-11-23 03:08:49,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85567 states, 49955 states have (on average 1.2364928435592033) internal successors, (61769), 51358 states have internal predecessors, (61769), 28127 states have call successors, (28127), 7665 states have call predecessors, (28127), 7482 states have return successors, (28696), 27340 states have call predecessors, (28696), 28112 states have call successors, (28696) [2021-11-23 03:08:50,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85567 states to 85567 states and 118592 transitions. [2021-11-23 03:08:50,297 INFO L78 Accepts]: Start accepts. Automaton has 85567 states and 118592 transitions. Word has length 240 [2021-11-23 03:08:50,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:08:50,298 INFO L470 AbstractCegarLoop]: Abstraction has 85567 states and 118592 transitions. [2021-11-23 03:08:50,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 03:08:50,299 INFO L276 IsEmpty]: Start isEmpty. Operand 85567 states and 118592 transitions. [2021-11-23 03:08:50,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-23 03:08:50,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:50,303 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 13, 12, 12, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:08:50,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 03:08:50,303 INFO L402 AbstractCegarLoop]: === Iteration 19 === 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)] === [2021-11-23 03:08:50,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:50,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1868677824, now seen corresponding path program 1 times [2021-11-23 03:08:50,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:08:50,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610592808] [2021-11-23 03:08:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:50,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:08:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2021-11-23 03:08:50,566 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:08:50,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610592808] [2021-11-23 03:08:50,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610592808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:08:50,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:08:50,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:08:50,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620395920] [2021-11-23 03:08:50,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:08:50,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:08:50,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:08:50,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:08:50,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:08:50,571 INFO L87 Difference]: Start difference. First operand 85567 states and 118592 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-23 03:08:56,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []