./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-hippi-rrunner.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/bin/utaipan-TEXQjIfE4P --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 10193951df4eb6f67d99eaaa8758acfa57b6461ca38071389a41cbdc5c585dfb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:36:03,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:36:03,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:36:03,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:36:03,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:36:03,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:36:03,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:36:03,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:36:03,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:36:03,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:36:03,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:36:03,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:36:03,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:36:03,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:36:03,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:36:03,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:36:03,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:36:03,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:36:03,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:36:03,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:36:03,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:36:03,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:36:03,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:36:03,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:36:03,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:36:03,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:36:03,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:36:03,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:36:03,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:36:03,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:36:03,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:36:03,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:36:03,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:36:03,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:36:03,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:36:03,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:36:03,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:36:03,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:36:03,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:36:03,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:36:03,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:36:03,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:36:03,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:36:03,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:36:03,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:36:03,589 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:36:03,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:36:03,590 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:36:03,591 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:36:03,591 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:36:03,591 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:36:03,591 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:36:03,592 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:36:03,593 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:36:03,593 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:36:03,593 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:36:03,593 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:36:03,594 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:36:03,594 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:36:03,594 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:36:03,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:36:03,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:36:03,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:36:03,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:36:03,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:36:03,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:36:03,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:36:03,596 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:36:03,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:36:03,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:36:03,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:36:03,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:36:03,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:36:03,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:36:03,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:36:03,599 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:36:03,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:36:03,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:36:03,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:36:03,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:36:03,600 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_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10193951df4eb6f67d99eaaa8758acfa57b6461ca38071389a41cbdc5c585dfb [2021-11-20 23:36:03,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:36:03,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:36:03,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:36:03,950 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:36:03,950 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:36:03,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i [2021-11-20 23:36:04,038 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/bin/utaipan-TEXQjIfE4P/data/5b0b931ab/715cb765633646ea81f22a54ff15ce9e/FLAGd32b74844 [2021-11-20 23:36:05,027 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:36:05,027 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i [2021-11-20 23:36:05,104 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/bin/utaipan-TEXQjIfE4P/data/5b0b931ab/715cb765633646ea81f22a54ff15ce9e/FLAGd32b74844 [2021-11-20 23:36:05,407 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/bin/utaipan-TEXQjIfE4P/data/5b0b931ab/715cb765633646ea81f22a54ff15ce9e [2021-11-20 23:36:05,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:36:05,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:36:05,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:36:05,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:36:05,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:36:05,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:05" (1/1) ... [2021-11-20 23:36:05,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4561f16d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:05, skipping insertion in model container [2021-11-20 23:36:05,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:05" (1/1) ... [2021-11-20 23:36:05,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:36:05,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:36:09,028 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_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i[341176,341189] [2021-11-20 23:36:09,031 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_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i[341345,341358] [2021-11-20 23:36:09,031 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_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i[341512,341525] [2021-11-20 23:36:09,032 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_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i[341680,341693] [2021-11-20 23:36:09,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:36:09,095 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:36:09,519 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_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i[341176,341189] [2021-11-20 23:36:09,520 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_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i[341345,341358] [2021-11-20 23:36:09,520 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_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i[341512,341525] [2021-11-20 23:36:09,521 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_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i[341680,341693] [2021-11-20 23:36:09,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:36:09,751 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:36:09,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:09 WrapperNode [2021-11-20 23:36:09,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:36:09,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:36:09,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:36:09,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:36:09,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:09" (1/1) ... [2021-11-20 23:36:09,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:09" (1/1) ... [2021-11-20 23:36:10,072 INFO L137 Inliner]: procedures = 427, calls = 1735, calls flagged for inlining = 206, calls inlined = 187, statements flattened = 4611 [2021-11-20 23:36:10,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:36:10,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:36:10,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:36:10,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:36:10,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:09" (1/1) ... [2021-11-20 23:36:10,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:09" (1/1) ... [2021-11-20 23:36:10,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:09" (1/1) ... [2021-11-20 23:36:10,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:09" (1/1) ... [2021-11-20 23:36:10,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:09" (1/1) ... [2021-11-20 23:36:10,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:09" (1/1) ... [2021-11-20 23:36:10,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:09" (1/1) ... [2021-11-20 23:36:10,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:36:10,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:36:10,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:36:10,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:36:10,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:09" (1/1) ... [2021-11-20 23:36:10,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:36:10,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:36:10,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:36:10,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059cff0a-d97d-4e0f-ba21-dcb60fcb18e4/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:36:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-11-20 23:36:10,547 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-11-20 23:36:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-20 23:36:10,547 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-20 23:36:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:36:10,548 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:36:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_82 [2021-11-20 23:36:10,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_82 [2021-11-20 23:36:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-20 23:36:10,549 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-20 23:36:10,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:36:10,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:36:10,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rr_driver_exit_13_2 [2021-11-20 23:36:10,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rr_driver_exit_13_2 [2021-11-20 23:36:10,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rr_private [2021-11-20 23:36:10,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rr_private [2021-11-20 23:36:10,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:36:10,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:36:10,550 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-20 23:36:10,550 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-20 23:36:10,551 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 23:36:10,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:36:10,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:36:10,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:36:10,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:36:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-20 23:36:10,552 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-20 23:36:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:36:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-20 23:36:10,552 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-20 23:36:10,553 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-20 23:36:10,553 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-20 23:36:10,553 INFO L130 BoogieDeclarations]: Found specification of procedure set_rraddr [2021-11-20 23:36:10,553 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rraddr [2021-11-20 23:36:10,553 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-20 23:36:10,553 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-20 23:36:10,554 INFO L130 BoogieDeclarations]: Found specification of procedure rr_read_eeprom_word [2021-11-20 23:36:10,554 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_read_eeprom_word [2021-11-20 23:36:10,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:36:10,554 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-20 23:36:10,554 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-20 23:36:10,555 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-20 23:36:10,555 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-20 23:36:10,555 INFO L130 BoogieDeclarations]: Found specification of procedure rr_read_eeprom [2021-11-20 23:36:10,555 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_read_eeprom [2021-11-20 23:36:10,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:36:10,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:36:10,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:36:10,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:36:10,556 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-20 23:36:10,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-20 23:36:10,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:36:10,557 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:36:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-20 23:36:10,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-20 23:36:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-20 23:36:10,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-20 23:36:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-20 23:36:10,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-20 23:36:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-20 23:36:10,558 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-20 23:36:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:36:10,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:36:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:36:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-20 23:36:10,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-20 23:36:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:36:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:36:10,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:36:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 23:36:10,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 23:36:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:36:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:36:10,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:36:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-20 23:36:10,561 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-20 23:36:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:36:10,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:36:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rr_private [2021-11-20 23:36:10,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rr_private [2021-11-20 23:36:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-20 23:36:10,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-20 23:36:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-20 23:36:10,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-20 23:36:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 23:36:10,563 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 23:36:10,563 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-20 23:36:10,563 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-20 23:36:10,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-20 23:36:10,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-20 23:36:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-20 23:36:10,564 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-20 23:36:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:36:10,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:36:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-20 23:36:10,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-20 23:36:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:36:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:36:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:36:10,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:36:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:36:10,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:36:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-20 23:36:10,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-20 23:36:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure rr_remove_one [2021-11-20 23:36:10,566 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_remove_one [2021-11-20 23:36:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-20 23:36:10,567 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-20 23:36:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:36:10,567 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:36:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-20 23:36:10,567 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-20 23:36:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-20 23:36:10,568 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-20 23:36:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure rr_init1 [2021-11-20 23:36:10,568 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_init1 [2021-11-20 23:36:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-20 23:36:10,568 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-20 23:36:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-20 23:36:10,569 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-20 23:36:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:36:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure rr_open [2021-11-20 23:36:10,569 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_open [2021-11-20 23:36:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:36:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-20 23:36:10,570 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-20 23:36:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:36:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-20 23:36:10,570 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-20 23:36:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-20 23:36:10,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-20 23:36:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 23:36:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 23:36:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:36:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:36:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-20 23:36:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-20 23:36:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-20 23:36:10,572 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-20 23:36:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:36:10,572 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:36:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:36:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:36:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:36:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure rr_raz_tx [2021-11-20 23:36:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_raz_tx [2021-11-20 23:36:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure rr_close [2021-11-20 23:36:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_close [2021-11-20 23:36:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:36:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:36:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-20 23:36:10,574 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-20 23:36:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-20 23:36:10,574 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-20 23:36:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:36:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:36:10,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:36:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure rr_raz_rx [2021-11-20 23:36:10,575 INFO L138 BoogieDeclarations]: Found implementation of procedure rr_raz_rx [2021-11-20 23:36:11,380 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:36:11,386 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:36:12,404 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:36:14,328 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:36:14,395 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:36:15,085 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:36:15,085 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 23:36:15,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:15 BoogieIcfgContainer [2021-11-20 23:36:15,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:36:15,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:36:15,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:36:15,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:36:15,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:36:05" (1/3) ... [2021-11-20 23:36:15,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad9fd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:15, skipping insertion in model container [2021-11-20 23:36:15,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:09" (2/3) ... [2021-11-20 23:36:15,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad9fd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:15, skipping insertion in model container [2021-11-20 23:36:15,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:15" (3/3) ... [2021-11-20 23:36:15,098 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-hippi-rrunner.cil.i [2021-11-20 23:36:15,104 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:36:15,104 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-20 23:36:15,163 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:36:15,171 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 [2021-11-20 23:36:15,171 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 23:36:15,223 INFO L276 IsEmpty]: Start isEmpty. Operand has 1212 states, 670 states have (on average 1.3044776119402985) internal successors, (874), 695 states have internal predecessors, (874), 469 states have call successors, (469), 71 states have call predecessors, (469), 70 states have return successors, (463), 452 states have call predecessors, (463), 463 states have call successors, (463) [2021-11-20 23:36:15,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-20 23:36:15,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:15,239 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:15,239 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)] === [2021-11-20 23:36:15,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:15,245 INFO L85 PathProgramCache]: Analyzing trace with hash -579458953, now seen corresponding path program 1 times [2021-11-20 23:36:15,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:15,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937002770] [2021-11-20 23:36:15,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:15,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:15,975 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-20 23:36:15,976 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:15,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937002770] [2021-11-20 23:36:15,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937002770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:15,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:15,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:15,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879871154] [2021-11-20 23:36:15,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:15,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:15,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:16,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:16,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:16,038 INFO L87 Difference]: Start difference. First operand has 1212 states, 670 states have (on average 1.3044776119402985) internal successors, (874), 695 states have internal predecessors, (874), 469 states have call successors, (469), 71 states have call predecessors, (469), 70 states have return successors, (463), 452 states have call predecessors, (463), 463 states have call successors, (463) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-20 23:36:17,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:17,274 INFO L93 Difference]: Finished difference Result 3529 states and 5347 transitions. [2021-11-20 23:36:17,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:17,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2021-11-20 23:36:17,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:17,334 INFO L225 Difference]: With dead ends: 3529 [2021-11-20 23:36:17,334 INFO L226 Difference]: Without dead ends: 2322 [2021-11-20 23:36:17,352 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 [2021-11-20 23:36:17,356 INFO L933 BasicCegarLoop]: 2002 mSDtfsCounter, 1689 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 3543 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:17,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1689 Valid, 3543 Invalid, 473 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:36:17,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2021-11-20 23:36:17,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 2318. [2021-11-20 23:36:17,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 1295 states have (on average 1.2972972972972974) internal successors, (1680), 1344 states have internal predecessors, (1680), 884 states have call successors, (884), 137 states have call predecessors, (884), 136 states have return successors, (880), 858 states have call predecessors, (880), 880 states have call successors, (880) [2021-11-20 23:36:17,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 3444 transitions. [2021-11-20 23:36:17,753 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 3444 transitions. Word has length 91 [2021-11-20 23:36:17,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:17,755 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 3444 transitions. [2021-11-20 23:36:17,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-20 23:36:17,756 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 3444 transitions. [2021-11-20 23:36:17,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-20 23:36:17,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:17,764 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:17,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:36:17,764 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)] === [2021-11-20 23:36:17,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:17,765 INFO L85 PathProgramCache]: Analyzing trace with hash 500607433, now seen corresponding path program 1 times [2021-11-20 23:36:17,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:17,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241931043] [2021-11-20 23:36:17,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:17,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-20 23:36:17,914 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:17,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241931043] [2021-11-20 23:36:17,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241931043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:17,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:17,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:17,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563558585] [2021-11-20 23:36:17,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:17,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:17,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:17,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:17,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:17,919 INFO L87 Difference]: Start difference. First operand 2318 states and 3444 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 23:36:18,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:18,834 INFO L93 Difference]: Finished difference Result 6550 states and 9706 transitions. [2021-11-20 23:36:18,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:18,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 98 [2021-11-20 23:36:18,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:18,878 INFO L225 Difference]: With dead ends: 6550 [2021-11-20 23:36:18,878 INFO L226 Difference]: Without dead ends: 4247 [2021-11-20 23:36:18,892 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 [2021-11-20 23:36:18,893 INFO L933 BasicCegarLoop]: 2041 mSDtfsCounter, 1489 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:18,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 3565 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:36:18,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4247 states. [2021-11-20 23:36:19,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4247 to 4215. [2021-11-20 23:36:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4215 states, 2336 states have (on average 1.2846746575342465) internal successors, (3001), 2412 states have internal predecessors, (3001), 1613 states have call successors, (1613), 270 states have call predecessors, (1613), 263 states have return successors, (1621), 1568 states have call predecessors, (1621), 1609 states have call successors, (1621) [2021-11-20 23:36:19,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4215 states to 4215 states and 6235 transitions. [2021-11-20 23:36:19,280 INFO L78 Accepts]: Start accepts. Automaton has 4215 states and 6235 transitions. Word has length 98 [2021-11-20 23:36:19,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:19,281 INFO L470 AbstractCegarLoop]: Abstraction has 4215 states and 6235 transitions. [2021-11-20 23:36:19,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 23:36:19,281 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states and 6235 transitions. [2021-11-20 23:36:19,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-20 23:36:19,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:19,288 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:19,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:36:19,290 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)] === [2021-11-20 23:36:19,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:19,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1767529696, now seen corresponding path program 1 times [2021-11-20 23:36:19,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:19,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560716369] [2021-11-20 23:36:19,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:19,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-20 23:36:19,464 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:19,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560716369] [2021-11-20 23:36:19,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560716369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:19,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:19,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:19,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958674128] [2021-11-20 23:36:19,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:19,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:19,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:19,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:19,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:19,468 INFO L87 Difference]: Start difference. First operand 4215 states and 6235 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-20 23:36:20,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:20,532 INFO L93 Difference]: Finished difference Result 8466 states and 12512 transitions. [2021-11-20 23:36:20,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:20,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 101 [2021-11-20 23:36:20,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:20,573 INFO L225 Difference]: With dead ends: 8466 [2021-11-20 23:36:20,573 INFO L226 Difference]: Without dead ends: 4266 [2021-11-20 23:36:20,594 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 [2021-11-20 23:36:20,595 INFO L933 BasicCegarLoop]: 1988 mSDtfsCounter, 1227 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 3508 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:20,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1227 Valid, 3508 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:36:20,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2021-11-20 23:36:20,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 4236. [2021-11-20 23:36:20,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4236 states, 2337 states have (on average 1.278990158322636) internal successors, (2989), 2413 states have internal predecessors, (2989), 1611 states have call successors, (1611), 291 states have call predecessors, (1611), 285 states have return successors, (1613), 1565 states have call predecessors, (1613), 1607 states have call successors, (1613) [2021-11-20 23:36:20,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4236 states to 4236 states and 6213 transitions. [2021-11-20 23:36:20,897 INFO L78 Accepts]: Start accepts. Automaton has 4236 states and 6213 transitions. Word has length 101 [2021-11-20 23:36:20,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:20,898 INFO L470 AbstractCegarLoop]: Abstraction has 4236 states and 6213 transitions. [2021-11-20 23:36:20,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-20 23:36:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 4236 states and 6213 transitions. [2021-11-20 23:36:20,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-20 23:36:20,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:20,902 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:20,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:36:20,902 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)] === [2021-11-20 23:36:20,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:20,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1443289555, now seen corresponding path program 1 times [2021-11-20 23:36:20,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:20,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315267815] [2021-11-20 23:36:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:20,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-20 23:36:21,018 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:21,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315267815] [2021-11-20 23:36:21,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315267815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:21,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:21,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:21,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176712468] [2021-11-20 23:36:21,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:21,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:21,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:21,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:21,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:21,022 INFO L87 Difference]: Start difference. First operand 4236 states and 6213 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 23:36:22,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:22,132 INFO L93 Difference]: Finished difference Result 11148 states and 16342 transitions. [2021-11-20 23:36:22,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:22,133 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2021-11-20 23:36:22,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:22,196 INFO L225 Difference]: With dead ends: 11148 [2021-11-20 23:36:22,196 INFO L226 Difference]: Without dead ends: 6927 [2021-11-20 23:36:22,221 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 [2021-11-20 23:36:22,222 INFO L933 BasicCegarLoop]: 1946 mSDtfsCounter, 1491 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 3465 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:22,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1491 Valid, 3465 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:36:22,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6927 states. [2021-11-20 23:36:22,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6927 to 6896. [2021-11-20 23:36:22,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6896 states, 3786 states have (on average 1.272054939249868) internal successors, (4816), 3923 states have internal predecessors, (4816), 2630 states have call successors, (2630), 490 states have call predecessors, (2630), 477 states have return successors, (2638), 2533 states have call predecessors, (2638), 2626 states have call successors, (2638) [2021-11-20 23:36:22,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6896 states to 6896 states and 10084 transitions. [2021-11-20 23:36:22,811 INFO L78 Accepts]: Start accepts. Automaton has 6896 states and 10084 transitions. Word has length 114 [2021-11-20 23:36:22,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:22,814 INFO L470 AbstractCegarLoop]: Abstraction has 6896 states and 10084 transitions. [2021-11-20 23:36:22,815 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 23:36:22,815 INFO L276 IsEmpty]: Start isEmpty. Operand 6896 states and 10084 transitions. [2021-11-20 23:36:22,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-20 23:36:22,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:22,818 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 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] [2021-11-20 23:36:22,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:36:22,820 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:36:22,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:22,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1988526711, now seen corresponding path program 1 times [2021-11-20 23:36:22,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:22,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236974461] [2021-11-20 23:36:22,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:22,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-20 23:36:23,000 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:23,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236974461] [2021-11-20 23:36:23,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236974461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:23,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:23,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:23,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780898700] [2021-11-20 23:36:23,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:23,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:23,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:23,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:23,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:23,003 INFO L87 Difference]: Start difference. First operand 6896 states and 10084 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 23:36:24,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:24,270 INFO L93 Difference]: Finished difference Result 18916 states and 27596 transitions. [2021-11-20 23:36:24,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:24,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 124 [2021-11-20 23:36:24,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:24,385 INFO L225 Difference]: With dead ends: 18916 [2021-11-20 23:36:24,386 INFO L226 Difference]: Without dead ends: 12035 [2021-11-20 23:36:24,422 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 [2021-11-20 23:36:24,424 INFO L933 BasicCegarLoop]: 2326 mSDtfsCounter, 1709 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 3824 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:24,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1709 Valid, 3824 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:36:24,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12035 states. [2021-11-20 23:36:25,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12035 to 11994. [2021-11-20 23:36:25,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11994 states, 6727 states have (on average 1.2797680987067044) internal successors, (8609), 7003 states have internal predecessors, (8609), 4420 states have call successors, (4420), 873 states have call predecessors, (4420), 844 states have return successors, (4444), 4210 states have call predecessors, (4444), 4416 states have call successors, (4444) [2021-11-20 23:36:25,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11994 states to 11994 states and 17473 transitions. [2021-11-20 23:36:25,333 INFO L78 Accepts]: Start accepts. Automaton has 11994 states and 17473 transitions. Word has length 124 [2021-11-20 23:36:25,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:25,334 INFO L470 AbstractCegarLoop]: Abstraction has 11994 states and 17473 transitions. [2021-11-20 23:36:25,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 23:36:25,335 INFO L276 IsEmpty]: Start isEmpty. Operand 11994 states and 17473 transitions. [2021-11-20 23:36:25,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-20 23:36:25,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:25,341 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:25,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:36:25,342 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)] === [2021-11-20 23:36:25,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:25,343 INFO L85 PathProgramCache]: Analyzing trace with hash 456897818, now seen corresponding path program 1 times [2021-11-20 23:36:25,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:25,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773152869] [2021-11-20 23:36:25,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:25,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-11-20 23:36:25,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:25,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773152869] [2021-11-20 23:36:25,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773152869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:25,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:25,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:36:25,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519300898] [2021-11-20 23:36:25,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:25,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:25,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:25,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:25,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:25,582 INFO L87 Difference]: Start difference. First operand 11994 states and 17473 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 23:36:26,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:26,707 INFO L93 Difference]: Finished difference Result 12000 states and 17478 transitions. [2021-11-20 23:36:26,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:36:26,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2021-11-20 23:36:26,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:26,767 INFO L225 Difference]: With dead ends: 12000 [2021-11-20 23:36:26,767 INFO L226 Difference]: Without dead ends: 11998 [2021-11-20 23:36:26,773 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 [2021-11-20 23:36:26,775 INFO L933 BasicCegarLoop]: 1554 mSDtfsCounter, 1735 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1749 SdHoareTripleChecker+Valid, 4646 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:26,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1749 Valid, 4646 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:36:26,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11998 states. [2021-11-20 23:36:27,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11998 to 11998. [2021-11-20 23:36:27,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11998 states, 6730 states have (on average 1.2796433878157503) internal successors, (8612), 7006 states have internal predecessors, (8612), 4420 states have call successors, (4420), 874 states have call predecessors, (4420), 845 states have return successors, (4444), 4210 states have call predecessors, (4444), 4416 states have call successors, (4444) [2021-11-20 23:36:27,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11998 states to 11998 states and 17476 transitions. [2021-11-20 23:36:27,747 INFO L78 Accepts]: Start accepts. Automaton has 11998 states and 17476 transitions. Word has length 133 [2021-11-20 23:36:27,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:27,748 INFO L470 AbstractCegarLoop]: Abstraction has 11998 states and 17476 transitions. [2021-11-20 23:36:27,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 23:36:27,749 INFO L276 IsEmpty]: Start isEmpty. Operand 11998 states and 17476 transitions. [2021-11-20 23:36:27,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-20 23:36:27,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:27,754 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:27,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:36:27,754 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:36:27,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:27,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1540103732, now seen corresponding path program 1 times [2021-11-20 23:36:27,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:27,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071625470] [2021-11-20 23:36:27,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:27,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-11-20 23:36:27,979 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:27,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071625470] [2021-11-20 23:36:27,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071625470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:27,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:27,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:36:27,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664082207] [2021-11-20 23:36:27,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:27,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:27,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:27,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:27,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:27,983 INFO L87 Difference]: Start difference. First operand 11998 states and 17476 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 23:36:29,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:29,206 INFO L93 Difference]: Finished difference Result 12004 states and 17481 transitions. [2021-11-20 23:36:29,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:36:29,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2021-11-20 23:36:29,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:29,265 INFO L225 Difference]: With dead ends: 12004 [2021-11-20 23:36:29,266 INFO L226 Difference]: Without dead ends: 12002 [2021-11-20 23:36:29,274 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 [2021-11-20 23:36:29,275 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1730 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:29,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1743 Valid, 4649 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:36:29,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12002 states. [2021-11-20 23:36:30,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12002 to 12002. [2021-11-20 23:36:30,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12002 states, 6733 states have (on average 1.2795187880588148) internal successors, (8615), 7009 states have internal predecessors, (8615), 4420 states have call successors, (4420), 875 states have call predecessors, (4420), 846 states have return successors, (4444), 4210 states have call predecessors, (4444), 4416 states have call successors, (4444) [2021-11-20 23:36:30,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12002 states to 12002 states and 17479 transitions. [2021-11-20 23:36:30,137 INFO L78 Accepts]: Start accepts. Automaton has 12002 states and 17479 transitions. Word has length 138 [2021-11-20 23:36:30,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:30,138 INFO L470 AbstractCegarLoop]: Abstraction has 12002 states and 17479 transitions. [2021-11-20 23:36:30,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 23:36:30,138 INFO L276 IsEmpty]: Start isEmpty. Operand 12002 states and 17479 transitions. [2021-11-20 23:36:30,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-20 23:36:30,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:30,142 INFO L514 BasicCegarLoop]: trace histogram [9, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:30,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:36:30,142 INFO L402 AbstractCegarLoop]: === Iteration 8 === 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)] === [2021-11-20 23:36:30,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:30,143 INFO L85 PathProgramCache]: Analyzing trace with hash -883809846, now seen corresponding path program 1 times [2021-11-20 23:36:30,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:30,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549322743] [2021-11-20 23:36:30,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:30,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:30,249 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-11-20 23:36:30,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:30,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549322743] [2021-11-20 23:36:30,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549322743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:30,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:30,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:30,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954446466] [2021-11-20 23:36:30,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:30,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:30,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:30,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:30,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:30,253 INFO L87 Difference]: Start difference. First operand 12002 states and 17479 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-20 23:36:32,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:32,083 INFO L93 Difference]: Finished difference Result 35084 states and 51145 transitions. [2021-11-20 23:36:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:32,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 142 [2021-11-20 23:36:32,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:32,220 INFO L225 Difference]: With dead ends: 35084 [2021-11-20 23:36:32,220 INFO L226 Difference]: Without dead ends: 23097 [2021-11-20 23:36:32,285 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 [2021-11-20 23:36:32,286 INFO L933 BasicCegarLoop]: 2195 mSDtfsCounter, 1743 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 3750 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:32,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1743 Valid, 3750 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:36:32,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23097 states. [2021-11-20 23:36:34,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23097 to 23029. [2021-11-20 23:36:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23029 states, 12925 states have (on average 1.281624758220503) internal successors, (16565), 13495 states have internal predecessors, (16565), 8480 states have call successors, (8480), 1678 states have call predecessors, (8480), 1621 states have return successors, (8532), 8039 states have call predecessors, (8532), 8476 states have call successors, (8532) [2021-11-20 23:36:34,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23029 states to 23029 states and 33577 transitions. [2021-11-20 23:36:34,217 INFO L78 Accepts]: Start accepts. Automaton has 23029 states and 33577 transitions. Word has length 142 [2021-11-20 23:36:34,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:34,218 INFO L470 AbstractCegarLoop]: Abstraction has 23029 states and 33577 transitions. [2021-11-20 23:36:34,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-20 23:36:34,218 INFO L276 IsEmpty]: Start isEmpty. Operand 23029 states and 33577 transitions. [2021-11-20 23:36:34,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-20 23:36:34,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:34,223 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:34,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:36:34,223 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)] === [2021-11-20 23:36:34,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:34,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1318087962, now seen corresponding path program 1 times [2021-11-20 23:36:34,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:34,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430563127] [2021-11-20 23:36:34,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:34,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:34,436 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-20 23:36:34,436 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:34,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430563127] [2021-11-20 23:36:34,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430563127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:34,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:34,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:36:34,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157952508] [2021-11-20 23:36:34,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:34,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:34,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:34,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:34,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:34,442 INFO L87 Difference]: Start difference. First operand 23029 states and 33577 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-20 23:36:36,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:36,678 INFO L93 Difference]: Finished difference Result 23035 states and 33582 transitions. [2021-11-20 23:36:36,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:36:36,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 143 [2021-11-20 23:36:36,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:36,828 INFO L225 Difference]: With dead ends: 23035 [2021-11-20 23:36:36,829 INFO L226 Difference]: Without dead ends: 23033 [2021-11-20 23:36:36,841 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 [2021-11-20 23:36:36,842 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1730 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:36,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1742 Valid, 4649 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:36:36,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23033 states. [2021-11-20 23:36:38,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23033 to 23033. [2021-11-20 23:36:38,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23033 states, 12928 states have (on average 1.2815594059405941) internal successors, (16568), 13498 states have internal predecessors, (16568), 8480 states have call successors, (8480), 1679 states have call predecessors, (8480), 1622 states have return successors, (8532), 8039 states have call predecessors, (8532), 8476 states have call successors, (8532) [2021-11-20 23:36:39,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23033 states to 23033 states and 33580 transitions. [2021-11-20 23:36:39,054 INFO L78 Accepts]: Start accepts. Automaton has 23033 states and 33580 transitions. Word has length 143 [2021-11-20 23:36:39,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:39,054 INFO L470 AbstractCegarLoop]: Abstraction has 23033 states and 33580 transitions. [2021-11-20 23:36:39,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-20 23:36:39,055 INFO L276 IsEmpty]: Start isEmpty. Operand 23033 states and 33580 transitions. [2021-11-20 23:36:39,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-20 23:36:39,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:39,060 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:39,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:36:39,060 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)] === [2021-11-20 23:36:39,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:39,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1552757858, now seen corresponding path program 1 times [2021-11-20 23:36:39,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:39,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480116198] [2021-11-20 23:36:39,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:39,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2021-11-20 23:36:39,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:39,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480116198] [2021-11-20 23:36:39,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480116198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:39,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:39,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:36:39,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040418760] [2021-11-20 23:36:39,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:39,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:39,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:39,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:39,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:39,248 INFO L87 Difference]: Start difference. First operand 23033 states and 33580 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 23:36:41,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:41,459 INFO L93 Difference]: Finished difference Result 23039 states and 33585 transitions. [2021-11-20 23:36:41,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:36:41,461 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 152 [2021-11-20 23:36:41,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:41,577 INFO L225 Difference]: With dead ends: 23039 [2021-11-20 23:36:41,577 INFO L226 Difference]: Without dead ends: 23037 [2021-11-20 23:36:41,591 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 [2021-11-20 23:36:41,592 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1729 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:41,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1740 Valid, 4649 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 23:36:41,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23037 states. [2021-11-20 23:36:43,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23037 to 23037. [2021-11-20 23:36:43,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23037 states, 12931 states have (on average 1.281494083984224) internal successors, (16571), 13501 states have internal predecessors, (16571), 8480 states have call successors, (8480), 1680 states have call predecessors, (8480), 1623 states have return successors, (8532), 8039 states have call predecessors, (8532), 8476 states have call successors, (8532) [2021-11-20 23:36:43,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23037 states to 23037 states and 33583 transitions. [2021-11-20 23:36:43,536 INFO L78 Accepts]: Start accepts. Automaton has 23037 states and 33583 transitions. Word has length 152 [2021-11-20 23:36:43,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:43,537 INFO L470 AbstractCegarLoop]: Abstraction has 23037 states and 33583 transitions. [2021-11-20 23:36:43,537 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 23:36:43,537 INFO L276 IsEmpty]: Start isEmpty. Operand 23037 states and 33583 transitions. [2021-11-20 23:36:43,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-20 23:36:43,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:43,543 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 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] [2021-11-20 23:36:43,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:36:43,543 INFO L402 AbstractCegarLoop]: === Iteration 11 === 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)] === [2021-11-20 23:36:43,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:43,544 INFO L85 PathProgramCache]: Analyzing trace with hash -189116576, now seen corresponding path program 1 times [2021-11-20 23:36:43,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:43,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373877071] [2021-11-20 23:36:43,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:43,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-20 23:36:43,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:43,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373877071] [2021-11-20 23:36:43,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373877071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:43,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:43,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:43,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379295021] [2021-11-20 23:36:43,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:43,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:43,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:43,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:43,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:43,701 INFO L87 Difference]: Start difference. First operand 23037 states and 33583 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, (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) [2021-11-20 23:36:46,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:46,066 INFO L93 Difference]: Finished difference Result 53869 states and 78585 transitions. [2021-11-20 23:36:46,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:46,067 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, (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 148 [2021-11-20 23:36:46,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:46,244 INFO L225 Difference]: With dead ends: 53869 [2021-11-20 23:36:46,244 INFO L226 Difference]: Without dead ends: 30893 [2021-11-20 23:36:46,316 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 [2021-11-20 23:36:46,317 INFO L933 BasicCegarLoop]: 2286 mSDtfsCounter, 1231 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 3796 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:46,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1231 Valid, 3796 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:36:46,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30893 states. [2021-11-20 23:36:48,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30893 to 30819. [2021-11-20 23:36:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30819 states, 17393 states have (on average 1.2822974759960903) internal successors, (22303), 18195 states have internal predecessors, (22303), 11200 states have call successors, (11200), 2296 states have call predecessors, (11200), 2223 states have return successors, (11252), 10579 states have call predecessors, (11252), 11196 states have call successors, (11252) [2021-11-20 23:36:48,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30819 states to 30819 states and 44755 transitions. [2021-11-20 23:36:48,652 INFO L78 Accepts]: Start accepts. Automaton has 30819 states and 44755 transitions. Word has length 148 [2021-11-20 23:36:48,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:48,652 INFO L470 AbstractCegarLoop]: Abstraction has 30819 states and 44755 transitions. [2021-11-20 23:36:48,653 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, (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) [2021-11-20 23:36:48,653 INFO L276 IsEmpty]: Start isEmpty. Operand 30819 states and 44755 transitions. [2021-11-20 23:36:48,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-20 23:36:48,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:48,658 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:48,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:36:48,658 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)] === [2021-11-20 23:36:48,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:48,659 INFO L85 PathProgramCache]: Analyzing trace with hash 2009477932, now seen corresponding path program 1 times [2021-11-20 23:36:48,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:48,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418519312] [2021-11-20 23:36:48,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:48,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-11-20 23:36:48,831 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:48,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418519312] [2021-11-20 23:36:48,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418519312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:48,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:48,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:36:48,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86363270] [2021-11-20 23:36:48,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:48,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:48,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:48,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:48,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:48,835 INFO L87 Difference]: Start difference. First operand 30819 states and 44755 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, (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) [2021-11-20 23:36:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:50,800 INFO L93 Difference]: Finished difference Result 30825 states and 44760 transitions. [2021-11-20 23:36:50,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:36:50,809 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, (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 157 [2021-11-20 23:36:50,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:50,966 INFO L225 Difference]: With dead ends: 30825 [2021-11-20 23:36:50,966 INFO L226 Difference]: Without dead ends: 30823 [2021-11-20 23:36:50,985 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 [2021-11-20 23:36:50,987 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1729 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:50,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 4649 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:36:51,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30823 states. [2021-11-20 23:36:53,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30823 to 30823. [2021-11-20 23:36:53,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30823 states, 17396 states have (on average 1.282248792825937) internal successors, (22306), 18198 states have internal predecessors, (22306), 11200 states have call successors, (11200), 2297 states have call predecessors, (11200), 2224 states have return successors, (11252), 10579 states have call predecessors, (11252), 11196 states have call successors, (11252) [2021-11-20 23:36:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30823 states to 30823 states and 44758 transitions. [2021-11-20 23:36:53,418 INFO L78 Accepts]: Start accepts. Automaton has 30823 states and 44758 transitions. Word has length 157 [2021-11-20 23:36:53,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:53,418 INFO L470 AbstractCegarLoop]: Abstraction has 30823 states and 44758 transitions. [2021-11-20 23:36:53,419 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, (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) [2021-11-20 23:36:53,419 INFO L276 IsEmpty]: Start isEmpty. Operand 30823 states and 44758 transitions. [2021-11-20 23:36:53,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-20 23:36:53,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:53,423 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 6, 5, 5, 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] [2021-11-20 23:36:53,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 23:36:53,423 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)] === [2021-11-20 23:36:53,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1733032546, now seen corresponding path program 1 times [2021-11-20 23:36:53,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:53,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51569499] [2021-11-20 23:36:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:53,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:53,605 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-20 23:36:53,605 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:53,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51569499] [2021-11-20 23:36:53,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51569499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:53,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:53,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:36:53,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392363676] [2021-11-20 23:36:53,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:53,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:53,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:53,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:53,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:53,608 INFO L87 Difference]: Start difference. First operand 30823 states and 44758 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) [2021-11-20 23:36:55,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:55,788 INFO L93 Difference]: Finished difference Result 30829 states and 44763 transitions. [2021-11-20 23:36:55,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:36:55,789 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 162 [2021-11-20 23:36:55,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:55,934 INFO L225 Difference]: With dead ends: 30829 [2021-11-20 23:36:55,934 INFO L226 Difference]: Without dead ends: 30827 [2021-11-20 23:36:55,954 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 [2021-11-20 23:36:55,955 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1729 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:55,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1738 Valid, 4649 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 23:36:55,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30827 states. [2021-11-20 23:36:58,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30827 to 30827. [2021-11-20 23:36:58,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30827 states, 17399 states have (on average 1.2822001264440486) internal successors, (22309), 18201 states have internal predecessors, (22309), 11200 states have call successors, (11200), 2298 states have call predecessors, (11200), 2225 states have return successors, (11252), 10579 states have call predecessors, (11252), 11196 states have call successors, (11252) [2021-11-20 23:36:58,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30827 states to 30827 states and 44761 transitions. [2021-11-20 23:36:58,574 INFO L78 Accepts]: Start accepts. Automaton has 30827 states and 44761 transitions. Word has length 162 [2021-11-20 23:36:58,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:58,575 INFO L470 AbstractCegarLoop]: Abstraction has 30827 states and 44761 transitions. [2021-11-20 23:36:58,575 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) [2021-11-20 23:36:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand 30827 states and 44761 transitions. [2021-11-20 23:36:58,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-20 23:36:58,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:58,580 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:58,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 23:36:58,581 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)] === [2021-11-20 23:36:58,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:58,581 INFO L85 PathProgramCache]: Analyzing trace with hash 69266714, now seen corresponding path program 1 times [2021-11-20 23:36:58,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:58,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412674530] [2021-11-20 23:36:58,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:58,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:58,797 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2021-11-20 23:36:58,797 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:58,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412674530] [2021-11-20 23:36:58,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412674530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:58,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:58,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:36:58,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305980971] [2021-11-20 23:36:58,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:58,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:58,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:58,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:58,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:58,800 INFO L87 Difference]: Start difference. First operand 30827 states and 44761 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-11-20 23:37:00,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:00,999 INFO L93 Difference]: Finished difference Result 30833 states and 44766 transitions. [2021-11-20 23:37:00,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:37:00,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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 163 [2021-11-20 23:37:01,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:01,100 INFO L225 Difference]: With dead ends: 30833 [2021-11-20 23:37:01,100 INFO L226 Difference]: Without dead ends: 30831 [2021-11-20 23:37:01,114 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 [2021-11-20 23:37:01,115 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1730 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:01,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1738 Valid, 4649 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:37:01,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30831 states. [2021-11-20 23:37:03,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30831 to 30831. [2021-11-20 23:37:03,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30831 states, 17402 states have (on average 1.2821514768417424) internal successors, (22312), 18204 states have internal predecessors, (22312), 11200 states have call successors, (11200), 2299 states have call predecessors, (11200), 2226 states have return successors, (11252), 10579 states have call predecessors, (11252), 11196 states have call successors, (11252) [2021-11-20 23:37:03,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30831 states to 30831 states and 44764 transitions. [2021-11-20 23:37:03,424 INFO L78 Accepts]: Start accepts. Automaton has 30831 states and 44764 transitions. Word has length 163 [2021-11-20 23:37:03,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:03,424 INFO L470 AbstractCegarLoop]: Abstraction has 30831 states and 44764 transitions. [2021-11-20 23:37:03,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-11-20 23:37:03,424 INFO L276 IsEmpty]: Start isEmpty. Operand 30831 states and 44764 transitions. [2021-11-20 23:37:03,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-20 23:37:03,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:03,427 INFO L514 BasicCegarLoop]: trace histogram [11, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2021-11-20 23:37:03,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 23:37:03,428 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)] === [2021-11-20 23:37:03,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:03,429 INFO L85 PathProgramCache]: Analyzing trace with hash -775750610, now seen corresponding path program 1 times [2021-11-20 23:37:03,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:03,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871491923] [2021-11-20 23:37:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:03,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2021-11-20 23:37:03,867 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:03,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871491923] [2021-11-20 23:37:03,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871491923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:03,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:03,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:37:03,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456456086] [2021-11-20 23:37:03,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:03,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:37:03,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:03,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:37:03,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:37:03,870 INFO L87 Difference]: Start difference. First operand 30831 states and 44764 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 23:37:06,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:06,401 INFO L93 Difference]: Finished difference Result 33445 states and 47487 transitions. [2021-11-20 23:37:06,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:37:06,401 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 171 [2021-11-20 23:37:06,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:06,514 INFO L225 Difference]: With dead ends: 33445 [2021-11-20 23:37:06,515 INFO L226 Difference]: Without dead ends: 33443 [2021-11-20 23:37:06,530 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 [2021-11-20 23:37:06,531 INFO L933 BasicCegarLoop]: 1650 mSDtfsCounter, 1071 mSDsluCounter, 4601 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 5673 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:06,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1078 Valid, 5673 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:37:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33443 states. [2021-11-20 23:37:08,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33443 to 33443. [2021-11-20 23:37:08,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33443 states, 18759 states have (on average 1.2681379604456529) internal successors, (23789), 19589 states have internal predecessors, (23789), 11822 states have call successors, (11822), 2932 states have call predecessors, (11822), 2859 states have return successors, (11874), 11201 states have call predecessors, (11874), 11818 states have call successors, (11874) [2021-11-20 23:37:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33443 states to 33443 states and 47485 transitions. [2021-11-20 23:37:08,919 INFO L78 Accepts]: Start accepts. Automaton has 33443 states and 47485 transitions. Word has length 171 [2021-11-20 23:37:08,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:08,920 INFO L470 AbstractCegarLoop]: Abstraction has 33443 states and 47485 transitions. [2021-11-20 23:37:08,920 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 23:37:08,920 INFO L276 IsEmpty]: Start isEmpty. Operand 33443 states and 47485 transitions. [2021-11-20 23:37:09,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-20 23:37:09,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:09,161 INFO L514 BasicCegarLoop]: trace histogram [11, 9, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:09,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 23:37:09,161 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:37:09,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:09,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1952140006, now seen corresponding path program 1 times [2021-11-20 23:37:09,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:09,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639427149] [2021-11-20 23:37:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:09,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2021-11-20 23:37:09,398 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:09,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639427149] [2021-11-20 23:37:09,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639427149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:09,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:09,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:37:09,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804314989] [2021-11-20 23:37:09,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:09,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:37:09,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:09,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:37:09,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:37:09,404 INFO L87 Difference]: Start difference. First operand 33443 states and 47485 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-11-20 23:37:11,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:11,689 INFO L93 Difference]: Finished difference Result 33449 states and 47490 transitions. [2021-11-20 23:37:11,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:37:11,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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 173 [2021-11-20 23:37:11,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:11,802 INFO L225 Difference]: With dead ends: 33449 [2021-11-20 23:37:11,802 INFO L226 Difference]: Without dead ends: 33447 [2021-11-20 23:37:11,817 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 [2021-11-20 23:37:11,817 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1730 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:11,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1736 Valid, 4649 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:11,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33447 states. [2021-11-20 23:37:14,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33447 to 33447. [2021-11-20 23:37:14,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33447 states, 18762 states have (on average 1.2680950858117472) internal successors, (23792), 19592 states have internal predecessors, (23792), 11822 states have call successors, (11822), 2933 states have call predecessors, (11822), 2860 states have return successors, (11874), 11201 states have call predecessors, (11874), 11818 states have call successors, (11874) [2021-11-20 23:37:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33447 states to 33447 states and 47488 transitions. [2021-11-20 23:37:14,424 INFO L78 Accepts]: Start accepts. Automaton has 33447 states and 47488 transitions. Word has length 173 [2021-11-20 23:37:14,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:14,424 INFO L470 AbstractCegarLoop]: Abstraction has 33447 states and 47488 transitions. [2021-11-20 23:37:14,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-11-20 23:37:14,425 INFO L276 IsEmpty]: Start isEmpty. Operand 33447 states and 47488 transitions. [2021-11-20 23:37:14,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-20 23:37:14,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:14,430 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 9, 9, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:14,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 23:37:14,431 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)] === [2021-11-20 23:37:14,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:14,431 INFO L85 PathProgramCache]: Analyzing trace with hash -974398412, now seen corresponding path program 1 times [2021-11-20 23:37:14,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:14,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719991855] [2021-11-20 23:37:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:14,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-11-20 23:37:14,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:14,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719991855] [2021-11-20 23:37:14,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719991855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:14,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:14,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:37:14,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815068031] [2021-11-20 23:37:14,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:14,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:37:14,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:14,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:37:14,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:37:14,617 INFO L87 Difference]: Start difference. First operand 33447 states and 47488 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 23:37:17,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:17,103 INFO L93 Difference]: Finished difference Result 33453 states and 47493 transitions. [2021-11-20 23:37:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:37:17,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 178 [2021-11-20 23:37:17,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:17,218 INFO L225 Difference]: With dead ends: 33453 [2021-11-20 23:37:17,218 INFO L226 Difference]: Without dead ends: 33451 [2021-11-20 23:37:17,234 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 [2021-11-20 23:37:17,235 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1730 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:17,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1735 Valid, 4649 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:37:17,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33451 states.