./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.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_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/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_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/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-ethernet-smsc-epic100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/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_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/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 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:23:26,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:23:26,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:23:26,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:23:26,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:23:26,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:23:26,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:23:26,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:23:26,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:23:26,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:23:26,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:23:26,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:23:26,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:23:26,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:23:26,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:23:26,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:23:26,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:23:26,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:23:26,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:23:26,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:23:26,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:23:26,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:23:26,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:23:26,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:23:26,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:23:26,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:23:26,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:23:26,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:23:26,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:23:26,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:23:26,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:23:26,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:23:26,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:23:26,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:23:26,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:23:26,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:23:26,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:23:26,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:23:26,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:23:26,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:23:26,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:23:26,370 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:23:26,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:23:26,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:23:26,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:23:26,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:23:26,412 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:23:26,413 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:23:26,414 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:23:26,414 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:23:26,414 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:23:26,414 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:23:26,416 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:23:26,416 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:23:26,417 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:23:26,417 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:23:26,417 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:23:26,417 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:23:26,418 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:23:26,418 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:23:26,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:23:26,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:23:26,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:23:26,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:23:26,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:23:26,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:23:26,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:23:26,422 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:23:26,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:23:26,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:23:26,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:23:26,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:23:26,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:23:26,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:23:26,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:23:26,427 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:23:26,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:23:26,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:23:26,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:23:26,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:23:26,428 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_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a [2021-11-21 00:23:26,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:23:26,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:23:26,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:23:26,790 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:23:26,791 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:23:26,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-21 00:23:26,866 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/data/7ee76f197/4e7f9456158043ff9bb3ea0d0881f366/FLAGb523a41c1 [2021-11-21 00:23:28,062 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:23:28,064 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-21 00:23:28,134 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/data/7ee76f197/4e7f9456158043ff9bb3ea0d0881f366/FLAGb523a41c1 [2021-11-21 00:23:28,283 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/data/7ee76f197/4e7f9456158043ff9bb3ea0d0881f366 [2021-11-21 00:23:28,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:23:28,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:23:28,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:23:28,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:23:28,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:23:28,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:23:28" (1/1) ... [2021-11-21 00:23:28,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742f46fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:23:28, skipping insertion in model container [2021-11-21 00:23:28,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:23:28" (1/1) ... [2021-11-21 00:23:28,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:23:28,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:23:32,021 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_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2021-11-21 00:23:32,024 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_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2021-11-21 00:23:32,025 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_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2021-11-21 00:23:32,026 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_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2021-11-21 00:23:32,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:23:32,139 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:23:32,597 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_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2021-11-21 00:23:32,598 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_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2021-11-21 00:23:32,598 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_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2021-11-21 00:23:32,599 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_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2021-11-21 00:23:32,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:23:32,948 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:23:32,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:23:32 WrapperNode [2021-11-21 00:23:32,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:23:32,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:23:32,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:23:32,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:23:32,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:23:32" (1/1) ... [2021-11-21 00:23:33,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:23:32" (1/1) ... [2021-11-21 00:23:33,483 INFO L137 Inliner]: procedures = 451, calls = 2015, calls flagged for inlining = 220, calls inlined = 194, statements flattened = 4549 [2021-11-21 00:23:33,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:23:33,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:23:33,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:23:33,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:23:33,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:23:32" (1/1) ... [2021-11-21 00:23:33,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:23:32" (1/1) ... [2021-11-21 00:23:33,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:23:32" (1/1) ... [2021-11-21 00:23:33,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:23:32" (1/1) ... [2021-11-21 00:23:33,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:23:32" (1/1) ... [2021-11-21 00:23:33,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:23:32" (1/1) ... [2021-11-21 00:23:33,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:23:32" (1/1) ... [2021-11-21 00:23:33,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:23:33,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:23:33,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:23:33,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:23:33,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:23:32" (1/1) ... [2021-11-21 00:23:33,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:23:33,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:23:33,862 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:23:33,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:23:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-21 00:23:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-21 00:23:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 00:23:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 00:23:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:23:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:23:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_begin [2021-11-21 00:23:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_begin [2021-11-21 00:23:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-21 00:23:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-21 00:23:33,925 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 00:23:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 00:23:33,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:23:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:23:33,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 00:23:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 00:23:33,926 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 00:23:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 00:23:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 00:23:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 00:23:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-21 00:23:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-21 00:23:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_73 [2021-11-21 00:23:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_73 [2021-11-21 00:23:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-21 00:23:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-21 00:23:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 00:23:33,931 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 00:23:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 00:23:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 00:23:33,931 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 00:23:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:23:33,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:23:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 00:23:33,932 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 00:23:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-21 00:23:33,933 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-21 00:23:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 00:23:33,933 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 00:23:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:23:33,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:23:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 00:23:33,935 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 00:23:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 00:23:33,937 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 00:23:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:23:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 00:23:33,937 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 00:23:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:23:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 00:23:33,938 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 00:23:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 00:23:33,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 00:23:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:23:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:23:33,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:23:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure epic_open [2021-11-21 00:23:33,940 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_open [2021-11-21 00:23:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:23:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-21 00:23:33,941 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-21 00:23:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 00:23:33,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 00:23:33,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:23:33,942 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:23:33,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 00:23:33,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 00:23:33,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 00:23:33,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 00:23:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 00:23:33,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 00:23:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 00:23:33,944 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 00:23:33,945 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 00:23:33,945 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 00:23:33,945 INFO L130 BoogieDeclarations]: Found specification of procedure epic_restart [2021-11-21 00:23:33,945 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_restart [2021-11-21 00:23:33,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_epic_cleanup_14_2 [2021-11-21 00:23:33,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_epic_cleanup_14_2 [2021-11-21 00:23:33,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 00:23:33,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 00:23:33,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:23:33,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 00:23:33,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 00:23:33,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:23:33,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:23:33,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:23:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2021-11-21 00:23:33,950 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2021-11-21 00:23:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:23:33,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:23:33,951 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 00:23:33,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 00:23:33,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:23:33,951 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-21 00:23:33,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-21 00:23:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:23:33,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:23:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_epic_private [2021-11-21 00:23:33,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_epic_private [2021-11-21 00:23:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-21 00:23:33,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-21 00:23:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 00:23:33,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 00:23:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 00:23:33,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 00:23:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-21 00:23:33,959 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-21 00:23:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 00:23:33,959 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 00:23:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure epic_remove_one [2021-11-21 00:23:33,961 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_remove_one [2021-11-21 00:23:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 00:23:33,961 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 00:23:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 00:23:33,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 00:23:33,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_napi_lock_of_epic_private [2021-11-21 00:23:33,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_napi_lock_of_epic_private [2021-11-21 00:23:33,969 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 00:23:33,970 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 00:23:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-21 00:23:33,970 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-21 00:23:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:23:33,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:23:33,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:23:33,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:23:33,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:23:33,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:23:33,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 00:23:33,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 00:23:33,972 INFO L130 BoogieDeclarations]: Found specification of procedure epic_rx [2021-11-21 00:23:33,972 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_rx [2021-11-21 00:23:33,972 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_complete [2021-11-21 00:23:33,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_complete [2021-11-21 00:23:33,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 00:23:33,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 00:23:33,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_napi_lock_of_epic_private [2021-11-21 00:23:33,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_napi_lock_of_epic_private [2021-11-21 00:23:33,973 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 00:23:33,973 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 00:23:33,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:23:33,974 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:23:33,974 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 00:23:33,974 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 00:23:33,974 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-21 00:23:33,974 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-21 00:23:33,975 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 00:23:33,975 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 00:23:33,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:23:33,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_72 [2021-11-21 00:23:33,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_72 [2021-11-21 00:23:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure epic_resume [2021-11-21 00:23:33,976 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_resume [2021-11-21 00:23:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 00:23:33,976 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 00:23:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:23:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure epic_tx_timeout [2021-11-21 00:23:33,977 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_tx_timeout [2021-11-21 00:23:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-21 00:23:33,977 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-21 00:23:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:23:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 00:23:33,978 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 00:23:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:23:33,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:23:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-21 00:23:33,979 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-21 00:23:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 00:23:33,979 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 00:23:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 00:23:33,980 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 00:23:33,980 INFO L130 BoogieDeclarations]: Found specification of procedure epic_close [2021-11-21 00:23:33,980 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_close [2021-11-21 00:23:33,980 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 00:23:33,980 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 00:23:33,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:23:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:23:33,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:23:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 00:23:33,981 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 00:23:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_epic_private [2021-11-21 00:23:33,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_epic_private [2021-11-21 00:23:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:23:33,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:23:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-21 00:23:33,982 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-21 00:23:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:23:33,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:23:33,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:23:33,983 INFO L130 BoogieDeclarations]: Found specification of procedure epic_pause [2021-11-21 00:23:33,983 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_pause [2021-11-21 00:23:35,072 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:23:35,080 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:23:35,790 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:23:39,249 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:23:39,337 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:23:40,495 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:23:40,496 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:23:40,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:23:40 BoogieIcfgContainer [2021-11-21 00:23:40,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:23:40,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:23:40,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:23:40,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:23:40,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:23:28" (1/3) ... [2021-11-21 00:23:40,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b75466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:23:40, skipping insertion in model container [2021-11-21 00:23:40,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:23:32" (2/3) ... [2021-11-21 00:23:40,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b75466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:23:40, skipping insertion in model container [2021-11-21 00:23:40,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:23:40" (3/3) ... [2021-11-21 00:23:40,515 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-21 00:23:40,522 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:23:40,523 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 00:23:40,608 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:23:40,627 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 [2021-11-21 00:23:40,627 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 00:23:40,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 1244 states, 714 states have (on average 1.2997198879551821) internal successors, (928), 748 states have internal predecessors, (928), 441 states have call successors, (441), 87 states have call predecessors, (441), 86 states have return successors, (435), 430 states have call predecessors, (435), 435 states have call successors, (435) [2021-11-21 00:23:40,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-21 00:23:40,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:23:40,751 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:23:40,752 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)] === [2021-11-21 00:23:40,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:23:40,759 INFO L85 PathProgramCache]: Analyzing trace with hash -709225583, now seen corresponding path program 1 times [2021-11-21 00:23:40,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:23:40,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774700277] [2021-11-21 00:23:40,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:23:40,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:23:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:23:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-21 00:23:41,670 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:23:41,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774700277] [2021-11-21 00:23:41,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774700277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:23:41,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:23:41,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:23:41,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202907722] [2021-11-21 00:23:41,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:23:41,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:23:41,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:23:41,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:23:41,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:23:41,770 INFO L87 Difference]: Start difference. First operand has 1244 states, 714 states have (on average 1.2997198879551821) internal successors, (928), 748 states have internal predecessors, (928), 441 states have call successors, (441), 87 states have call predecessors, (441), 86 states have return successors, (435), 430 states have call predecessors, (435), 435 states have call successors, (435) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (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) [2021-11-21 00:23:44,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:23:44,239 INFO L93 Difference]: Finished difference Result 3619 states and 5297 transitions. [2021-11-21 00:23:44,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:23:44,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (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 111 [2021-11-21 00:23:44,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:23:44,373 INFO L225 Difference]: With dead ends: 3619 [2021-11-21 00:23:44,373 INFO L226 Difference]: Without dead ends: 2384 [2021-11-21 00:23:44,389 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 [2021-11-21 00:23:44,393 INFO L933 BasicCegarLoop]: 1937 mSDtfsCounter, 1685 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:23:44,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1685 Valid, 3441 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-21 00:23:44,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2021-11-21 00:23:44,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2380. [2021-11-21 00:23:44,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 1381 states have (on average 1.2932657494569153) internal successors, (1786), 1448 states have internal predecessors, (1786), 828 states have call successors, (828), 169 states have call predecessors, (828), 168 states have return successors, (824), 814 states have call predecessors, (824), 824 states have call successors, (824) [2021-11-21 00:23:44,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3438 transitions. [2021-11-21 00:23:44,768 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3438 transitions. Word has length 111 [2021-11-21 00:23:44,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:23:44,769 INFO L470 AbstractCegarLoop]: Abstraction has 2380 states and 3438 transitions. [2021-11-21 00:23:44,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (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) [2021-11-21 00:23:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3438 transitions. [2021-11-21 00:23:44,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-21 00:23:44,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:23:44,778 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:23:44,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:23:44,779 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)] === [2021-11-21 00:23:44,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:23:44,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1654300437, now seen corresponding path program 1 times [2021-11-21 00:23:44,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:23:44,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959987771] [2021-11-21 00:23:44,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:23:44,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:23:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:23:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-21 00:23:45,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:23:45,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959987771] [2021-11-21 00:23:45,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959987771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:23:45,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:23:45,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:23:45,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943829695] [2021-11-21 00:23:45,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:23:45,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:23:45,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:23:45,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:23:45,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:23:45,057 INFO L87 Difference]: Start difference. First operand 2380 states and 3438 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-21 00:23:47,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:23:47,565 INFO L93 Difference]: Finished difference Result 6768 states and 9748 transitions. [2021-11-21 00:23:47,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:23:47,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 119 [2021-11-21 00:23:47,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:23:47,623 INFO L225 Difference]: With dead ends: 6768 [2021-11-21 00:23:47,624 INFO L226 Difference]: Without dead ends: 4407 [2021-11-21 00:23:47,643 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 [2021-11-21 00:23:47,645 INFO L933 BasicCegarLoop]: 1892 mSDtfsCounter, 1497 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:23:47,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1497 Valid, 3365 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-21 00:23:47,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4407 states. [2021-11-21 00:23:48,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4407 to 4377. [2021-11-21 00:23:48,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4377 states, 2542 states have (on average 1.2828481510621559) internal successors, (3261), 2670 states have internal predecessors, (3261), 1515 states have call successors, (1515), 320 states have call predecessors, (1515), 317 states have return successors, (1513), 1482 states have call predecessors, (1513), 1511 states have call successors, (1513) [2021-11-21 00:23:48,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4377 states to 4377 states and 6289 transitions. [2021-11-21 00:23:48,125 INFO L78 Accepts]: Start accepts. Automaton has 4377 states and 6289 transitions. Word has length 119 [2021-11-21 00:23:48,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:23:48,126 INFO L470 AbstractCegarLoop]: Abstraction has 4377 states and 6289 transitions. [2021-11-21 00:23:48,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-21 00:23:48,126 INFO L276 IsEmpty]: Start isEmpty. Operand 4377 states and 6289 transitions. [2021-11-21 00:23:48,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-21 00:23:48,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:23:48,140 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:23:48,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:23:48,141 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)] === [2021-11-21 00:23:48,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:23:48,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1237218887, now seen corresponding path program 1 times [2021-11-21 00:23:48,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:23:48,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13401503] [2021-11-21 00:23:48,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:23:48,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:23:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:23:48,445 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-21 00:23:48,445 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:23:48,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13401503] [2021-11-21 00:23:48,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13401503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:23:48,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:23:48,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:23:48,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428895961] [2021-11-21 00:23:48,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:23:48,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:23:48,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:23:48,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:23:48,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:23:48,455 INFO L87 Difference]: Start difference. First operand 4377 states and 6289 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 00:23:51,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:23:51,030 INFO L93 Difference]: Finished difference Result 12709 states and 18245 transitions. [2021-11-21 00:23:51,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:23:51,031 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2021-11-21 00:23:51,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:23:51,132 INFO L225 Difference]: With dead ends: 12709 [2021-11-21 00:23:51,133 INFO L226 Difference]: Without dead ends: 8351 [2021-11-21 00:23:51,168 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 [2021-11-21 00:23:51,169 INFO L933 BasicCegarLoop]: 2025 mSDtfsCounter, 1644 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 3496 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:23:51,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1644 Valid, 3496 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-21 00:23:51,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8351 states. [2021-11-21 00:23:51,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8351 to 8317. [2021-11-21 00:23:51,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8317 states, 4848 states have (on average 1.2807343234323432) internal successors, (6209), 5092 states have internal predecessors, (6209), 2855 states have call successors, (2855), 622 states have call predecessors, (2855), 611 states have return successors, (2865), 2774 states have call predecessors, (2865), 2851 states have call successors, (2865) [2021-11-21 00:23:51,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 11929 transitions. [2021-11-21 00:23:51,965 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 11929 transitions. Word has length 123 [2021-11-21 00:23:51,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:23:51,966 INFO L470 AbstractCegarLoop]: Abstraction has 8317 states and 11929 transitions. [2021-11-21 00:23:51,967 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 00:23:51,968 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 11929 transitions. [2021-11-21 00:23:51,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-21 00:23:51,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:23:51,975 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2021-11-21 00:23:51,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:23:51,976 INFO L402 AbstractCegarLoop]: === Iteration 4 === 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)] === [2021-11-21 00:23:51,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:23:51,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1930997087, now seen corresponding path program 1 times [2021-11-21 00:23:51,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:23:51,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77430441] [2021-11-21 00:23:51,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:23:51,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:23:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:23:52,394 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-21 00:23:52,395 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:23:52,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77430441] [2021-11-21 00:23:52,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77430441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:23:52,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:23:52,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:23:52,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001960746] [2021-11-21 00:23:52,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:23:52,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:23:52,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:23:52,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:23:52,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:23:52,408 INFO L87 Difference]: Start difference. First operand 8317 states and 11929 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (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) [2021-11-21 00:23:55,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:23:55,278 INFO L93 Difference]: Finished difference Result 8323 states and 11934 transitions. [2021-11-21 00:23:55,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:23:55,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (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 153 [2021-11-21 00:23:55,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:23:55,367 INFO L225 Difference]: With dead ends: 8323 [2021-11-21 00:23:55,367 INFO L226 Difference]: Without dead ends: 8321 [2021-11-21 00:23:55,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:23:55,383 INFO L933 BasicCegarLoop]: 1517 mSDtfsCounter, 1731 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 4537 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:23:55,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1743 Valid, 4537 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-21 00:23:55,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8321 states. [2021-11-21 00:23:56,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8321 to 8321. [2021-11-21 00:23:56,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8321 states, 4851 states have (on average 1.2805607091321376) internal successors, (6212), 5095 states have internal predecessors, (6212), 2855 states have call successors, (2855), 623 states have call predecessors, (2855), 612 states have return successors, (2865), 2774 states have call predecessors, (2865), 2851 states have call successors, (2865) [2021-11-21 00:23:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8321 states to 8321 states and 11932 transitions. [2021-11-21 00:23:56,229 INFO L78 Accepts]: Start accepts. Automaton has 8321 states and 11932 transitions. Word has length 153 [2021-11-21 00:23:56,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:23:56,231 INFO L470 AbstractCegarLoop]: Abstraction has 8321 states and 11932 transitions. [2021-11-21 00:23:56,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (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) [2021-11-21 00:23:56,232 INFO L276 IsEmpty]: Start isEmpty. Operand 8321 states and 11932 transitions. [2021-11-21 00:23:56,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-21 00:23:56,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:23:56,240 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:23:56,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:23:56,241 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:23:56,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:23:56,242 INFO L85 PathProgramCache]: Analyzing trace with hash -975514298, now seen corresponding path program 1 times [2021-11-21 00:23:56,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:23:56,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495013882] [2021-11-21 00:23:56,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:23:56,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:23:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:23:56,611 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-11-21 00:23:56,612 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:23:56,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495013882] [2021-11-21 00:23:56,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495013882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:23:56,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:23:56,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:23:56,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795117744] [2021-11-21 00:23:56,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:23:56,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:23:56,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:23:56,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:23:56,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:23:56,616 INFO L87 Difference]: Start difference. First operand 8321 states and 11932 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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) [2021-11-21 00:23:59,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:23:59,396 INFO L93 Difference]: Finished difference Result 8327 states and 11937 transitions. [2021-11-21 00:23:59,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:23:59,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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 162 [2021-11-21 00:23:59,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:23:59,502 INFO L225 Difference]: With dead ends: 8327 [2021-11-21 00:23:59,503 INFO L226 Difference]: Without dead ends: 8325 [2021-11-21 00:23:59,510 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 [2021-11-21 00:23:59,511 INFO L933 BasicCegarLoop]: 1520 mSDtfsCounter, 1725 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:23:59,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1736 Valid, 4540 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-21 00:23:59,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8325 states. [2021-11-21 00:24:00,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8325 to 8325. [2021-11-21 00:24:00,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8325 states, 4854 states have (on average 1.2803873094355172) internal successors, (6215), 5098 states have internal predecessors, (6215), 2855 states have call successors, (2855), 624 states have call predecessors, (2855), 613 states have return successors, (2865), 2774 states have call predecessors, (2865), 2851 states have call successors, (2865) [2021-11-21 00:24:00,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8325 states to 8325 states and 11935 transitions. [2021-11-21 00:24:00,177 INFO L78 Accepts]: Start accepts. Automaton has 8325 states and 11935 transitions. Word has length 162 [2021-11-21 00:24:00,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:00,178 INFO L470 AbstractCegarLoop]: Abstraction has 8325 states and 11935 transitions. [2021-11-21 00:24:00,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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) [2021-11-21 00:24:00,179 INFO L276 IsEmpty]: Start isEmpty. Operand 8325 states and 11935 transitions. [2021-11-21 00:24:00,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-21 00:24:00,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:00,188 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:00,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:24:00,189 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)] === [2021-11-21 00:24:00,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:00,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1851537415, now seen corresponding path program 1 times [2021-11-21 00:24:00,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:00,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007168002] [2021-11-21 00:24:00,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:00,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:00,543 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2021-11-21 00:24:00,543 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:00,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007168002] [2021-11-21 00:24:00,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007168002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:00,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:00,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:24:00,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724013353] [2021-11-21 00:24:00,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:00,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:24:00,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:00,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:24:00,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:24:00,547 INFO L87 Difference]: Start difference. First operand 8325 states and 11935 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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) [2021-11-21 00:24:02,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:02,948 INFO L93 Difference]: Finished difference Result 8331 states and 11940 transitions. [2021-11-21 00:24:02,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:24:02,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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 167 [2021-11-21 00:24:02,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:03,009 INFO L225 Difference]: With dead ends: 8331 [2021-11-21 00:24:03,009 INFO L226 Difference]: Without dead ends: 8329 [2021-11-21 00:24:03,016 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 [2021-11-21 00:24:03,017 INFO L933 BasicCegarLoop]: 1520 mSDtfsCounter, 1725 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:03,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1735 Valid, 4540 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-21 00:24:03,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8329 states. [2021-11-21 00:24:03,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8329 to 8329. [2021-11-21 00:24:03,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8329 states, 4857 states have (on average 1.280214123944822) internal successors, (6218), 5101 states have internal predecessors, (6218), 2855 states have call successors, (2855), 625 states have call predecessors, (2855), 614 states have return successors, (2865), 2774 states have call predecessors, (2865), 2851 states have call successors, (2865) [2021-11-21 00:24:03,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8329 states to 8329 states and 11938 transitions. [2021-11-21 00:24:03,640 INFO L78 Accepts]: Start accepts. Automaton has 8329 states and 11938 transitions. Word has length 167 [2021-11-21 00:24:03,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:03,641 INFO L470 AbstractCegarLoop]: Abstraction has 8329 states and 11938 transitions. [2021-11-21 00:24:03,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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) [2021-11-21 00:24:03,641 INFO L276 IsEmpty]: Start isEmpty. Operand 8329 states and 11938 transitions. [2021-11-21 00:24:03,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-21 00:24:03,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:03,651 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:03,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:24:03,651 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)] === [2021-11-21 00:24:03,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:03,652 INFO L85 PathProgramCache]: Analyzing trace with hash 287478776, now seen corresponding path program 1 times [2021-11-21 00:24:03,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:03,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870542203] [2021-11-21 00:24:03,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:03,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:03,921 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2021-11-21 00:24:03,921 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:03,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870542203] [2021-11-21 00:24:03,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870542203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:03,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:03,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:24:03,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519943438] [2021-11-21 00:24:03,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:03,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:24:03,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:03,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:24:03,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:24:03,925 INFO L87 Difference]: Start difference. First operand 8329 states and 11938 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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) [2021-11-21 00:24:06,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:06,720 INFO L93 Difference]: Finished difference Result 8335 states and 11943 transitions. [2021-11-21 00:24:06,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:24:06,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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 171 [2021-11-21 00:24:06,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:06,777 INFO L225 Difference]: With dead ends: 8335 [2021-11-21 00:24:06,777 INFO L226 Difference]: Without dead ends: 8333 [2021-11-21 00:24:06,784 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 [2021-11-21 00:24:06,786 INFO L933 BasicCegarLoop]: 1520 mSDtfsCounter, 1725 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:06,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1734 Valid, 4540 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-21 00:24:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8333 states. [2021-11-21 00:24:07,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8333 to 8333. [2021-11-21 00:24:07,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8333 states, 4860 states have (on average 1.2800411522633746) internal successors, (6221), 5104 states have internal predecessors, (6221), 2855 states have call successors, (2855), 626 states have call predecessors, (2855), 615 states have return successors, (2865), 2774 states have call predecessors, (2865), 2851 states have call successors, (2865) [2021-11-21 00:24:07,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8333 states to 8333 states and 11941 transitions. [2021-11-21 00:24:07,445 INFO L78 Accepts]: Start accepts. Automaton has 8333 states and 11941 transitions. Word has length 171 [2021-11-21 00:24:07,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:07,446 INFO L470 AbstractCegarLoop]: Abstraction has 8333 states and 11941 transitions. [2021-11-21 00:24:07,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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) [2021-11-21 00:24:07,447 INFO L276 IsEmpty]: Start isEmpty. Operand 8333 states and 11941 transitions. [2021-11-21 00:24:07,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-21 00:24:07,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:07,456 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:07,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:24:07,456 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:24:07,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:07,458 INFO L85 PathProgramCache]: Analyzing trace with hash 204405543, now seen corresponding path program 1 times [2021-11-21 00:24:07,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:07,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449524493] [2021-11-21 00:24:07,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:07,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:07,805 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2021-11-21 00:24:07,805 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:07,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449524493] [2021-11-21 00:24:07,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449524493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:07,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:07,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:24:07,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204260683] [2021-11-21 00:24:07,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:07,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:24:07,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:07,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:24:07,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:24:07,809 INFO L87 Difference]: Start difference. First operand 8333 states and 11941 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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) [2021-11-21 00:24:10,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:10,957 INFO L93 Difference]: Finished difference Result 8339 states and 11946 transitions. [2021-11-21 00:24:10,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:24:10,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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 177 [2021-11-21 00:24:10,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:11,015 INFO L225 Difference]: With dead ends: 8339 [2021-11-21 00:24:11,015 INFO L226 Difference]: Without dead ends: 8337 [2021-11-21 00:24:11,022 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 [2021-11-21 00:24:11,023 INFO L933 BasicCegarLoop]: 1520 mSDtfsCounter, 1725 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:11,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1733 Valid, 4540 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-21 00:24:11,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8337 states. [2021-11-21 00:24:11,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8337 to 8337. [2021-11-21 00:24:11,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8337 states, 4863 states have (on average 1.279868393995476) internal successors, (6224), 5107 states have internal predecessors, (6224), 2855 states have call successors, (2855), 627 states have call predecessors, (2855), 616 states have return successors, (2865), 2774 states have call predecessors, (2865), 2851 states have call successors, (2865) [2021-11-21 00:24:11,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8337 states to 8337 states and 11944 transitions. [2021-11-21 00:24:11,676 INFO L78 Accepts]: Start accepts. Automaton has 8337 states and 11944 transitions. Word has length 177 [2021-11-21 00:24:11,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:11,677 INFO L470 AbstractCegarLoop]: Abstraction has 8337 states and 11944 transitions. [2021-11-21 00:24:11,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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) [2021-11-21 00:24:11,678 INFO L276 IsEmpty]: Start isEmpty. Operand 8337 states and 11944 transitions. [2021-11-21 00:24:11,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-21 00:24:11,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:11,688 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:11,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:24:11,688 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)] === [2021-11-21 00:24:11,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:11,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1608458746, now seen corresponding path program 1 times [2021-11-21 00:24:11,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:11,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698448074] [2021-11-21 00:24:11,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:11,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2021-11-21 00:24:11,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:11,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698448074] [2021-11-21 00:24:11,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698448074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:11,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:11,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:24:11,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80980641] [2021-11-21 00:24:11,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:11,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:24:11,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:11,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:24:11,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:24:11,959 INFO L87 Difference]: Start difference. First operand 8337 states and 11944 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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) [2021-11-21 00:24:14,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:14,829 INFO L93 Difference]: Finished difference Result 8343 states and 11949 transitions. [2021-11-21 00:24:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:24:14,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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 182 [2021-11-21 00:24:14,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:14,890 INFO L225 Difference]: With dead ends: 8343 [2021-11-21 00:24:14,890 INFO L226 Difference]: Without dead ends: 8341 [2021-11-21 00:24:14,898 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 [2021-11-21 00:24:14,899 INFO L933 BasicCegarLoop]: 1520 mSDtfsCounter, 1725 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:14,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1732 Valid, 4540 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-21 00:24:14,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8341 states. [2021-11-21 00:24:15,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8341 to 8341. [2021-11-21 00:24:15,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8341 states, 4866 states have (on average 1.2796958487464036) internal successors, (6227), 5110 states have internal predecessors, (6227), 2855 states have call successors, (2855), 628 states have call predecessors, (2855), 617 states have return successors, (2865), 2774 states have call predecessors, (2865), 2851 states have call successors, (2865) [2021-11-21 00:24:15,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8341 states to 8341 states and 11947 transitions. [2021-11-21 00:24:15,696 INFO L78 Accepts]: Start accepts. Automaton has 8341 states and 11947 transitions. Word has length 182 [2021-11-21 00:24:15,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:15,699 INFO L470 AbstractCegarLoop]: Abstraction has 8341 states and 11947 transitions. [2021-11-21 00:24:15,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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) [2021-11-21 00:24:15,699 INFO L276 IsEmpty]: Start isEmpty. Operand 8341 states and 11947 transitions. [2021-11-21 00:24:15,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-21 00:24:15,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:15,712 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 7, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:15,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:24:15,713 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)] === [2021-11-21 00:24:15,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:15,714 INFO L85 PathProgramCache]: Analyzing trace with hash -21887417, now seen corresponding path program 1 times [2021-11-21 00:24:15,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:15,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575318521] [2021-11-21 00:24:15,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:15,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:15,995 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2021-11-21 00:24:15,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:15,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575318521] [2021-11-21 00:24:15,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575318521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:15,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:15,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:24:15,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890446347] [2021-11-21 00:24:15,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:15,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:24:15,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:15,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:24:15,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:24:15,999 INFO L87 Difference]: Start difference. First operand 8341 states and 11947 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-21 00:24:18,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:18,552 INFO L93 Difference]: Finished difference Result 8533 states and 12149 transitions. [2021-11-21 00:24:18,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:24:18,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 187 [2021-11-21 00:24:18,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:18,605 INFO L225 Difference]: With dead ends: 8533 [2021-11-21 00:24:18,605 INFO L226 Difference]: Without dead ends: 8531 [2021-11-21 00:24:18,611 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 [2021-11-21 00:24:18,612 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 1692 mSDsluCounter, 3643 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 4636 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:18,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1698 Valid, 4636 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-21 00:24:18,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8531 states. [2021-11-21 00:24:19,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8531 to 8529. [2021-11-21 00:24:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8529 states, 4967 states have (on average 1.2760217435071473) internal successors, (6338), 5219 states have internal predecessors, (6338), 2899 states have call successors, (2899), 671 states have call predecessors, (2899), 660 states have return successors, (2909), 2818 states have call predecessors, (2909), 2895 states have call successors, (2909) [2021-11-21 00:24:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8529 states to 8529 states and 12146 transitions. [2021-11-21 00:24:19,297 INFO L78 Accepts]: Start accepts. Automaton has 8529 states and 12146 transitions. Word has length 187 [2021-11-21 00:24:19,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:19,298 INFO L470 AbstractCegarLoop]: Abstraction has 8529 states and 12146 transitions. [2021-11-21 00:24:19,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-21 00:24:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 8529 states and 12146 transitions. [2021-11-21 00:24:19,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-21 00:24:19,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:19,311 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 8, 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, 1, 1] [2021-11-21 00:24:19,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:24:19,312 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:24:19,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:19,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1073312494, now seen corresponding path program 1 times [2021-11-21 00:24:19,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:19,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268109560] [2021-11-21 00:24:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:19,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:19,556 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-11-21 00:24:19,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:19,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268109560] [2021-11-21 00:24:19,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268109560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:19,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:19,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:24:19,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722765717] [2021-11-21 00:24:19,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:19,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:24:19,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:19,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:24:19,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:24:19,562 INFO L87 Difference]: Start difference. First operand 8529 states and 12146 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) [2021-11-21 00:24:22,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:22,117 INFO L93 Difference]: Finished difference Result 8535 states and 12151 transitions. [2021-11-21 00:24:22,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:24:22,117 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 188 [2021-11-21 00:24:22,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:22,167 INFO L225 Difference]: With dead ends: 8535 [2021-11-21 00:24:22,167 INFO L226 Difference]: Without dead ends: 8533 [2021-11-21 00:24:22,175 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 [2021-11-21 00:24:22,176 INFO L933 BasicCegarLoop]: 1520 mSDtfsCounter, 1726 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:22,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1731 Valid, 4540 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-21 00:24:22,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8533 states. [2021-11-21 00:24:22,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8533 to 8533. [2021-11-21 00:24:22,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8533 states, 4970 states have (on average 1.2758551307847084) internal successors, (6341), 5222 states have internal predecessors, (6341), 2899 states have call successors, (2899), 672 states have call predecessors, (2899), 661 states have return successors, (2909), 2818 states have call predecessors, (2909), 2895 states have call successors, (2909) [2021-11-21 00:24:22,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8533 states to 8533 states and 12149 transitions. [2021-11-21 00:24:22,942 INFO L78 Accepts]: Start accepts. Automaton has 8533 states and 12149 transitions. Word has length 188 [2021-11-21 00:24:22,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:22,943 INFO L470 AbstractCegarLoop]: Abstraction has 8533 states and 12149 transitions. [2021-11-21 00:24:22,943 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) [2021-11-21 00:24:22,944 INFO L276 IsEmpty]: Start isEmpty. Operand 8533 states and 12149 transitions. [2021-11-21 00:24:22,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-21 00:24:22,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:22,958 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 9, 8, 8, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:22,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:24:22,959 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)] === [2021-11-21 00:24:22,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:22,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1654217899, now seen corresponding path program 1 times [2021-11-21 00:24:22,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:22,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272074800] [2021-11-21 00:24:22,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:22,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:23,191 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2021-11-21 00:24:23,192 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:23,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272074800] [2021-11-21 00:24:23,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272074800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:23,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:23,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:24:23,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602073027] [2021-11-21 00:24:23,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:23,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:24:23,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:23,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:24:23,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:24:23,195 INFO L87 Difference]: Start difference. First operand 8533 states and 12149 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-21 00:24:25,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:25,620 INFO L93 Difference]: Finished difference Result 8577 states and 12175 transitions. [2021-11-21 00:24:25,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:24:25,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 196 [2021-11-21 00:24:25,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:25,665 INFO L225 Difference]: With dead ends: 8577 [2021-11-21 00:24:25,665 INFO L226 Difference]: Without dead ends: 8575 [2021-11-21 00:24:25,672 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 [2021-11-21 00:24:25,673 INFO L933 BasicCegarLoop]: 1525 mSDtfsCounter, 1701 mSDsluCounter, 3580 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 4578 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:25,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1705 Valid, 4578 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-21 00:24:25,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8575 states. [2021-11-21 00:24:26,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8575 to 8573. [2021-11-21 00:24:26,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8573 states, 4993 states have (on average 1.2745844181854595) internal successors, (6364), 5245 states have internal predecessors, (6364), 2899 states have call successors, (2899), 689 states have call predecessors, (2899), 678 states have return successors, (2909), 2818 states have call predecessors, (2909), 2895 states have call successors, (2909) [2021-11-21 00:24:26,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 12172 transitions. [2021-11-21 00:24:26,392 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 12172 transitions. Word has length 196 [2021-11-21 00:24:26,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:26,393 INFO L470 AbstractCegarLoop]: Abstraction has 8573 states and 12172 transitions. [2021-11-21 00:24:26,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-21 00:24:26,393 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 12172 transitions. [2021-11-21 00:24:26,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-21 00:24:26,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:26,406 INFO L514 BasicCegarLoop]: trace histogram [13, 10, 9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:26,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 00:24:26,407 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)] === [2021-11-21 00:24:26,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:26,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1098565298, now seen corresponding path program 1 times [2021-11-21 00:24:26,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:26,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293554103] [2021-11-21 00:24:26,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:26,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2021-11-21 00:24:26,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:26,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293554103] [2021-11-21 00:24:26,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293554103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:26,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:26,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:24:26,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045868514] [2021-11-21 00:24:26,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:26,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:24:26,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:26,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:24:26,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:24:26,616 INFO L87 Difference]: Start difference. First operand 8573 states and 12172 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-21 00:24:28,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:28,743 INFO L93 Difference]: Finished difference Result 8579 states and 12177 transitions. [2021-11-21 00:24:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:24:28,745 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 198 [2021-11-21 00:24:28,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:28,788 INFO L225 Difference]: With dead ends: 8579 [2021-11-21 00:24:28,788 INFO L226 Difference]: Without dead ends: 8577 [2021-11-21 00:24:28,795 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 [2021-11-21 00:24:28,797 INFO L933 BasicCegarLoop]: 1520 mSDtfsCounter, 1726 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:28,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1729 Valid, 4540 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-21 00:24:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8577 states. [2021-11-21 00:24:29,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8577 to 8577. [2021-11-21 00:24:29,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8577 states, 4996 states have (on average 1.2744195356285029) internal successors, (6367), 5248 states have internal predecessors, (6367), 2899 states have call successors, (2899), 690 states have call predecessors, (2899), 679 states have return successors, (2909), 2818 states have call predecessors, (2909), 2895 states have call successors, (2909) [2021-11-21 00:24:29,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8577 states to 8577 states and 12175 transitions. [2021-11-21 00:24:29,663 INFO L78 Accepts]: Start accepts. Automaton has 8577 states and 12175 transitions. Word has length 198 [2021-11-21 00:24:29,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:29,664 INFO L470 AbstractCegarLoop]: Abstraction has 8577 states and 12175 transitions. [2021-11-21 00:24:29,664 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-21 00:24:29,665 INFO L276 IsEmpty]: Start isEmpty. Operand 8577 states and 12175 transitions. [2021-11-21 00:24:29,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-21 00:24:29,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:29,682 INFO L514 BasicCegarLoop]: trace histogram [13, 11, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:29,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 00:24:29,683 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)] === [2021-11-21 00:24:29,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:29,684 INFO L85 PathProgramCache]: Analyzing trace with hash 459338887, now seen corresponding path program 1 times [2021-11-21 00:24:29,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:29,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541416868] [2021-11-21 00:24:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:29,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2021-11-21 00:24:29,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:29,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541416868] [2021-11-21 00:24:29,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541416868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:29,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:29,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:24:29,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203645440] [2021-11-21 00:24:29,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:29,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:24:29,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:29,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:24:29,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:24:29,878 INFO L87 Difference]: Start difference. First operand 8577 states and 12175 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 00:24:32,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:32,022 INFO L93 Difference]: Finished difference Result 8583 states and 12180 transitions. [2021-11-21 00:24:32,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:24:32,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 207 [2021-11-21 00:24:32,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:32,069 INFO L225 Difference]: With dead ends: 8583 [2021-11-21 00:24:32,069 INFO L226 Difference]: Without dead ends: 8581 [2021-11-21 00:24:32,074 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 [2021-11-21 00:24:32,075 INFO L933 BasicCegarLoop]: 1520 mSDtfsCounter, 1725 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:32,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1727 Valid, 4540 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-21 00:24:32,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8581 states. [2021-11-21 00:24:32,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8581 to 8581. [2021-11-21 00:24:32,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8581 states, 4999 states have (on average 1.274254850970194) internal successors, (6370), 5251 states have internal predecessors, (6370), 2899 states have call successors, (2899), 691 states have call predecessors, (2899), 680 states have return successors, (2909), 2818 states have call predecessors, (2909), 2895 states have call successors, (2909) [2021-11-21 00:24:32,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8581 states to 8581 states and 12178 transitions. [2021-11-21 00:24:32,760 INFO L78 Accepts]: Start accepts. Automaton has 8581 states and 12178 transitions. Word has length 207 [2021-11-21 00:24:32,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:32,761 INFO L470 AbstractCegarLoop]: Abstraction has 8581 states and 12178 transitions. [2021-11-21 00:24:32,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 00:24:32,761 INFO L276 IsEmpty]: Start isEmpty. Operand 8581 states and 12178 transitions. [2021-11-21 00:24:32,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-21 00:24:32,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:32,777 INFO L514 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:32,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 00:24:32,777 INFO L402 AbstractCegarLoop]: === Iteration 15 === 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)] === [2021-11-21 00:24:32,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:32,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1212680283, now seen corresponding path program 1 times [2021-11-21 00:24:32,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:32,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639089601] [2021-11-21 00:24:32,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:32,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2021-11-21 00:24:32,935 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:32,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639089601] [2021-11-21 00:24:32,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639089601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:32,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:32,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:24:32,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620334269] [2021-11-21 00:24:32,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:32,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:24:32,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:32,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:24:32,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:24:32,938 INFO L87 Difference]: Start difference. First operand 8581 states and 12178 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-21 00:24:34,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:34,503 INFO L93 Difference]: Finished difference Result 15170 states and 21428 transitions. [2021-11-21 00:24:34,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:24:34,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 204 [2021-11-21 00:24:34,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:34,522 INFO L225 Difference]: With dead ends: 15170 [2021-11-21 00:24:34,522 INFO L226 Difference]: Without dead ends: 6608 [2021-11-21 00:24:34,563 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 [2021-11-21 00:24:34,564 INFO L933 BasicCegarLoop]: 2177 mSDtfsCounter, 1033 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 3661 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:34,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1033 Valid, 3661 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-21 00:24:34,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6608 states. [2021-11-21 00:24:34,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6608 to 6532. [2021-11-21 00:24:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6532 states, 3868 states have (on average 1.2719751809720785) internal successors, (4920), 4058 states have internal predecessors, (4920), 2103 states have call successors, (2103), 568 states have call predecessors, (2103), 558 states have return successors, (2106), 2034 states have call predecessors, (2106), 2099 states have call successors, (2106) [2021-11-21 00:24:34,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 9129 transitions. [2021-11-21 00:24:34,942 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 9129 transitions. Word has length 204 [2021-11-21 00:24:34,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:34,943 INFO L470 AbstractCegarLoop]: Abstraction has 6532 states and 9129 transitions. [2021-11-21 00:24:34,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-21 00:24:34,943 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 9129 transitions. [2021-11-21 00:24:34,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-21 00:24:34,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:34,951 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 11, 11, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:34,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 00:24:34,951 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)] === [2021-11-21 00:24:34,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:34,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1513736274, now seen corresponding path program 1 times [2021-11-21 00:24:34,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:34,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843240337] [2021-11-21 00:24:34,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:34,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2021-11-21 00:24:35,127 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:35,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843240337] [2021-11-21 00:24:35,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843240337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:35,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:35,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:24:35,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957013155] [2021-11-21 00:24:35,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:35,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:24:35,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:35,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:24:35,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:24:35,129 INFO L87 Difference]: Start difference. First operand 6532 states and 9129 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, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-21 00:24:36,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:36,806 INFO L93 Difference]: Finished difference Result 6538 states and 9134 transitions. [2021-11-21 00:24:36,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:24:36,806 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, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 208 [2021-11-21 00:24:36,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:36,823 INFO L225 Difference]: With dead ends: 6538 [2021-11-21 00:24:36,823 INFO L226 Difference]: Without dead ends: 6534 [2021-11-21 00:24:36,827 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 [2021-11-21 00:24:36,827 INFO L933 BasicCegarLoop]: 1520 mSDtfsCounter, 1726 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:36,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1727 Valid, 4540 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:24:36,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6534 states. [2021-11-21 00:24:37,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6534 to 6534. [2021-11-21 00:24:37,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6534 states, 3870 states have (on average 1.271576227390181) internal successors, (4921), 4059 states have internal predecessors, (4921), 2103 states have call successors, (2103), 569 states have call predecessors, (2103), 558 states have return successors, (2106), 2034 states have call predecessors, (2106), 2099 states have call successors, (2106) [2021-11-21 00:24:37,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6534 states to 6534 states and 9130 transitions. [2021-11-21 00:24:37,313 INFO L78 Accepts]: Start accepts. Automaton has 6534 states and 9130 transitions. Word has length 208 [2021-11-21 00:24:37,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:37,314 INFO L470 AbstractCegarLoop]: Abstraction has 6534 states and 9130 transitions. [2021-11-21 00:24:37,314 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, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-21 00:24:37,314 INFO L276 IsEmpty]: Start isEmpty. Operand 6534 states and 9130 transitions. [2021-11-21 00:24:37,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-21 00:24:37,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:37,321 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 9, 9, 9, 9, 9, 9, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:37,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 00:24:37,322 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)] === [2021-11-21 00:24:37,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:37,322 INFO L85 PathProgramCache]: Analyzing trace with hash 865654695, now seen corresponding path program 1 times [2021-11-21 00:24:37,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:37,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584376161] [2021-11-21 00:24:37,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:37,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2021-11-21 00:24:37,516 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:37,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584376161] [2021-11-21 00:24:37,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584376161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:37,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:37,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:24:37,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141314727] [2021-11-21 00:24:37,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:37,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:24:37,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:37,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:24:37,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:24:37,518 INFO L87 Difference]: Start difference. First operand 6534 states and 9130 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-21 00:24:39,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:39,093 INFO L93 Difference]: Finished difference Result 6534 states and 9130 transitions. [2021-11-21 00:24:39,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:24:39,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 217 [2021-11-21 00:24:39,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:39,113 INFO L225 Difference]: With dead ends: 6534 [2021-11-21 00:24:39,113 INFO L226 Difference]: Without dead ends: 6402 [2021-11-21 00:24:39,117 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 [2021-11-21 00:24:39,118 INFO L933 BasicCegarLoop]: 1518 mSDtfsCounter, 1721 mSDsluCounter, 3537 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 4537 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:39,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 4537 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:24:39,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states. [2021-11-21 00:24:39,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 6402. [2021-11-21 00:24:39,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6402 states, 3819 states have (on average 1.26891856506939) internal successors, (4846), 3984 states have internal predecessors, (4846), 2039 states have call successors, (2039), 547 states have call predecessors, (2039), 542 states have return successors, (2046), 1999 states have call predecessors, (2046), 2039 states have call successors, (2046) [2021-11-21 00:24:39,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6402 states to 6402 states and 8931 transitions. [2021-11-21 00:24:39,566 INFO L78 Accepts]: Start accepts. Automaton has 6402 states and 8931 transitions. Word has length 217 [2021-11-21 00:24:39,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:39,567 INFO L470 AbstractCegarLoop]: Abstraction has 6402 states and 8931 transitions. [2021-11-21 00:24:39,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-21 00:24:39,567 INFO L276 IsEmpty]: Start isEmpty. Operand 6402 states and 8931 transitions. [2021-11-21 00:24:39,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-21 00:24:39,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:39,577 INFO L514 BasicCegarLoop]: trace histogram [15, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:39,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-21 00:24:39,578 INFO L402 AbstractCegarLoop]: === Iteration 18 === 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)] === [2021-11-21 00:24:39,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:39,578 INFO L85 PathProgramCache]: Analyzing trace with hash -450988051, now seen corresponding path program 1 times [2021-11-21 00:24:39,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:39,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65899073] [2021-11-21 00:24:39,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:39,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:39,749 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2021-11-21 00:24:39,749 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:39,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65899073] [2021-11-21 00:24:39,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65899073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:39,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:39,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:24:39,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489870115] [2021-11-21 00:24:39,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:39,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:24:39,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:39,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:24:39,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:24:39,752 INFO L87 Difference]: Start difference. First operand 6402 states and 8931 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 00:24:41,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:41,669 INFO L93 Difference]: Finished difference Result 14646 states and 20414 transitions. [2021-11-21 00:24:41,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:24:41,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 251 [2021-11-21 00:24:41,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:41,694 INFO L225 Difference]: With dead ends: 14646 [2021-11-21 00:24:41,694 INFO L226 Difference]: Without dead ends: 8384 [2021-11-21 00:24:41,715 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 [2021-11-21 00:24:41,716 INFO L933 BasicCegarLoop]: 2274 mSDtfsCounter, 992 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 3706 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:41,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 3706 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-21 00:24:41,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8384 states. [2021-11-21 00:24:42,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8384 to 8376. [2021-11-21 00:24:42,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8376 states, 5028 states have (on average 1.2675019888623706) internal successors, (6373), 5237 states have internal predecessors, (6373), 2609 states have call successors, (2609), 742 states have call predecessors, (2609), 737 states have return successors, (2616), 2563 states have call predecessors, (2616), 2609 states have call successors, (2616) [2021-11-21 00:24:42,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8376 states to 8376 states and 11598 transitions. [2021-11-21 00:24:42,289 INFO L78 Accepts]: Start accepts. Automaton has 8376 states and 11598 transitions. Word has length 251 [2021-11-21 00:24:42,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:42,290 INFO L470 AbstractCegarLoop]: Abstraction has 8376 states and 11598 transitions. [2021-11-21 00:24:42,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 00:24:42,291 INFO L276 IsEmpty]: Start isEmpty. Operand 8376 states and 11598 transitions. [2021-11-21 00:24:42,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-11-21 00:24:42,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:42,301 INFO L514 BasicCegarLoop]: trace histogram [17, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:42,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-21 00:24:42,301 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:24:42,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:42,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1482818783, now seen corresponding path program 1 times [2021-11-21 00:24:42,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:42,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076444059] [2021-11-21 00:24:42,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:42,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:42,714 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2021-11-21 00:24:42,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:42,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076444059] [2021-11-21 00:24:42,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076444059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:42,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:42,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:24:42,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224208346] [2021-11-21 00:24:42,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:42,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:24:42,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:42,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:24:42,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:24:42,718 INFO L87 Difference]: Start difference. First operand 8376 states and 11598 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-11-21 00:24:44,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:44,596 INFO L93 Difference]: Finished difference Result 8392 states and 11612 transitions. [2021-11-21 00:24:44,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:24:44,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 313 [2021-11-21 00:24:44,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:44,619 INFO L225 Difference]: With dead ends: 8392 [2021-11-21 00:24:44,620 INFO L226 Difference]: Without dead ends: 8390 [2021-11-21 00:24:44,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:24:44,625 INFO L933 BasicCegarLoop]: 1474 mSDtfsCounter, 1616 mSDsluCounter, 3491 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 4442 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:44,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1618 Valid, 4442 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 00:24:44,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8390 states. [2021-11-21 00:24:45,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8390 to 8388. [2021-11-21 00:24:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8388 states, 5037 states have (on average 1.266428429620806) internal successors, (6379), 5246 states have internal predecessors, (6379), 2609 states have call successors, (2609), 745 states have call predecessors, (2609), 740 states have return successors, (2616), 2563 states have call predecessors, (2616), 2609 states have call successors, (2616) [2021-11-21 00:24:45,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8388 states to 8388 states and 11604 transitions. [2021-11-21 00:24:45,231 INFO L78 Accepts]: Start accepts. Automaton has 8388 states and 11604 transitions. Word has length 313 [2021-11-21 00:24:45,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:45,232 INFO L470 AbstractCegarLoop]: Abstraction has 8388 states and 11604 transitions. [2021-11-21 00:24:45,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-11-21 00:24:45,233 INFO L276 IsEmpty]: Start isEmpty. Operand 8388 states and 11604 transitions. [2021-11-21 00:24:45,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-11-21 00:24:45,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:45,248 INFO L514 BasicCegarLoop]: trace histogram [17, 11, 11, 9, 9, 9, 9, 9, 9, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:45,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-21 00:24:45,249 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:24:45,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:45,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1080575433, now seen corresponding path program 1 times [2021-11-21 00:24:45,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:45,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193321872] [2021-11-21 00:24:45,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:45,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2021-11-21 00:24:45,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:45,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193321872] [2021-11-21 00:24:45,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193321872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:45,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:45,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:24:45,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182584970] [2021-11-21 00:24:45,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:45,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:24:45,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:45,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:24:45,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:24:45,504 INFO L87 Difference]: Start difference. First operand 8388 states and 11604 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-21 00:24:47,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:47,931 INFO L93 Difference]: Finished difference Result 8390 states and 11605 transitions. [2021-11-21 00:24:47,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:24:47,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 334 [2021-11-21 00:24:47,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:47,957 INFO L225 Difference]: With dead ends: 8390 [2021-11-21 00:24:47,957 INFO L226 Difference]: Without dead ends: 8388 [2021-11-21 00:24:47,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:24:47,963 INFO L933 BasicCegarLoop]: 1470 mSDtfsCounter, 26 mSDsluCounter, 5163 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 5862 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:47,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 5862 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-21 00:24:47,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8388 states. [2021-11-21 00:24:48,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8388 to 8388. [2021-11-21 00:24:48,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8388 states, 5037 states have (on average 1.265237244391503) internal successors, (6373), 5246 states have internal predecessors, (6373), 2609 states have call successors, (2609), 745 states have call predecessors, (2609), 740 states have return successors, (2616), 2563 states have call predecessors, (2616), 2609 states have call successors, (2616) [2021-11-21 00:24:48,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8388 states to 8388 states and 11598 transitions. [2021-11-21 00:24:48,460 INFO L78 Accepts]: Start accepts. Automaton has 8388 states and 11598 transitions. Word has length 334 [2021-11-21 00:24:48,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:48,461 INFO L470 AbstractCegarLoop]: Abstraction has 8388 states and 11598 transitions. [2021-11-21 00:24:48,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-21 00:24:48,462 INFO L276 IsEmpty]: Start isEmpty. Operand 8388 states and 11598 transitions. [2021-11-21 00:24:48,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-11-21 00:24:48,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:48,486 INFO L514 BasicCegarLoop]: trace histogram [23, 17, 17, 11, 11, 11, 11, 11, 11, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:48,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-21 00:24:48,487 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:24:48,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:48,488 INFO L85 PathProgramCache]: Analyzing trace with hash 364287246, now seen corresponding path program 1 times [2021-11-21 00:24:48,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:48,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267486631] [2021-11-21 00:24:48,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:48,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:48,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1333 trivial. 0 not checked. [2021-11-21 00:24:48,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:48,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267486631] [2021-11-21 00:24:48,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267486631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:48,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:48,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:24:48,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268049000] [2021-11-21 00:24:48,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:48,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:24:48,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:48,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:24:48,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:24:48,880 INFO L87 Difference]: Start difference. First operand 8388 states and 11598 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-11-21 00:24:50,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:50,475 INFO L93 Difference]: Finished difference Result 16648 states and 23035 transitions. [2021-11-21 00:24:50,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:24:50,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 474 [2021-11-21 00:24:50,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:50,515 INFO L225 Difference]: With dead ends: 16648 [2021-11-21 00:24:50,515 INFO L226 Difference]: Without dead ends: 8400 [2021-11-21 00:24:50,550 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 [2021-11-21 00:24:50,551 INFO L933 BasicCegarLoop]: 1471 mSDtfsCounter, 1 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:50,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2934 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-21 00:24:50,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8400 states. [2021-11-21 00:24:51,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8400 to 8392. [2021-11-21 00:24:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8392 states, 5041 states have (on average 1.265026780400714) internal successors, (6377), 5250 states have internal predecessors, (6377), 2609 states have call successors, (2609), 745 states have call predecessors, (2609), 740 states have return successors, (2616), 2563 states have call predecessors, (2616), 2609 states have call successors, (2616) [2021-11-21 00:24:51,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8392 states to 8392 states and 11602 transitions. [2021-11-21 00:24:51,244 INFO L78 Accepts]: Start accepts. Automaton has 8392 states and 11602 transitions. Word has length 474 [2021-11-21 00:24:51,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:51,244 INFO L470 AbstractCegarLoop]: Abstraction has 8392 states and 11602 transitions. [2021-11-21 00:24:51,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-11-21 00:24:51,245 INFO L276 IsEmpty]: Start isEmpty. Operand 8392 states and 11602 transitions. [2021-11-21 00:24:51,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-11-21 00:24:51,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:51,271 INFO L514 BasicCegarLoop]: trace histogram [23, 17, 17, 11, 11, 11, 11, 11, 11, 6, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:51,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-21 00:24:51,271 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:24:51,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:51,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1726440598, now seen corresponding path program 1 times [2021-11-21 00:24:51,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:51,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145203971] [2021-11-21 00:24:51,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:51,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1358 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 1343 trivial. 0 not checked. [2021-11-21 00:24:51,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:51,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145203971] [2021-11-21 00:24:51,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145203971] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:24:51,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702885413] [2021-11-21 00:24:51,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:51,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:24:51,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:24:51,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:24:51,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:24:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:52,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 4533 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:24:53,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:24:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1358 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2021-11-21 00:24:53,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:24:53,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702885413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:53,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:24:53,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 00:24:53,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362006577] [2021-11-21 00:24:53,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:53,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:24:53,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:54,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:24:54,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:24:54,000 INFO L87 Difference]: Start difference. First operand 8392 states and 11602 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2021-11-21 00:24:55,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:55,413 INFO L93 Difference]: Finished difference Result 16760 states and 23215 transitions. [2021-11-21 00:24:55,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:24:55,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 479 [2021-11-21 00:24:55,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:55,440 INFO L225 Difference]: With dead ends: 16760 [2021-11-21 00:24:55,440 INFO L226 Difference]: Without dead ends: 8508 [2021-11-21 00:24:55,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:24:55,461 INFO L933 BasicCegarLoop]: 1485 mSDtfsCounter, 17 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2941 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:55,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 2941 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 00:24:55,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8508 states. [2021-11-21 00:24:55,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8508 to 8400. [2021-11-21 00:24:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8400 states, 5049 states have (on average 1.264606852842147) internal successors, (6385), 5258 states have internal predecessors, (6385), 2609 states have call successors, (2609), 745 states have call predecessors, (2609), 740 states have return successors, (2616), 2563 states have call predecessors, (2616), 2609 states have call successors, (2616) [2021-11-21 00:24:55,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8400 states to 8400 states and 11610 transitions. [2021-11-21 00:24:55,923 INFO L78 Accepts]: Start accepts. Automaton has 8400 states and 11610 transitions. Word has length 479 [2021-11-21 00:24:55,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:55,923 INFO L470 AbstractCegarLoop]: Abstraction has 8400 states and 11610 transitions. [2021-11-21 00:24:55,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2021-11-21 00:24:55,924 INFO L276 IsEmpty]: Start isEmpty. Operand 8400 states and 11610 transitions. [2021-11-21 00:24:55,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2021-11-21 00:24:55,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:55,939 INFO L514 BasicCegarLoop]: trace histogram [23, 17, 17, 11, 11, 11, 11, 11, 11, 6, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:55,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-21 00:24:56,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-21 00:24:56,140 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:24:56,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:56,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1596818011, now seen corresponding path program 1 times [2021-11-21 00:24:56,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:56,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547785663] [2021-11-21 00:24:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:56,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1359 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 1344 trivial. 0 not checked. [2021-11-21 00:24:56,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:56,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547785663] [2021-11-21 00:24:56,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547785663] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:24:56,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424173409] [2021-11-21 00:24:56,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:56,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:24:56,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:24:56,483 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:24:56,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:24:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:57,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 4555 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:24:57,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:24:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1359 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 1205 trivial. 0 not checked. [2021-11-21 00:24:58,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:24:58,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424173409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:58,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:24:58,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 00:24:58,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512969363] [2021-11-21 00:24:58,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:58,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:24:58,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:58,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:24:58,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:24:58,784 INFO L87 Difference]: Start difference. First operand 8400 states and 11610 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 3 states have call successors, (74), 3 states have call predecessors, (74), 3 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2021-11-21 00:25:01,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:25:01,729 INFO L93 Difference]: Finished difference Result 20044 states and 27775 transitions. [2021-11-21 00:25:01,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:25:01,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 3 states have call successors, (74), 3 states have call predecessors, (74), 3 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) Word has length 484 [2021-11-21 00:25:01,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:25:01,766 INFO L225 Difference]: With dead ends: 20044 [2021-11-21 00:25:01,766 INFO L226 Difference]: Without dead ends: 11784 [2021-11-21 00:25:01,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:25:01,793 INFO L933 BasicCegarLoop]: 2677 mSDtfsCounter, 1492 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:25:01,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1492 Valid, 4068 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-21 00:25:01,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11784 states. [2021-11-21 00:25:02,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11784 to 11781. [2021-11-21 00:25:02,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11781 states, 7126 states have (on average 1.2587706988492844) internal successors, (8970), 7412 states have internal predecessors, (8970), 3630 states have call successors, (3630), 1031 states have call predecessors, (3630), 1023 states have return successors, (3641), 3561 states have call predecessors, (3641), 3630 states have call successors, (3641) [2021-11-21 00:25:02,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11781 states to 11781 states and 16241 transitions. [2021-11-21 00:25:02,566 INFO L78 Accepts]: Start accepts. Automaton has 11781 states and 16241 transitions. Word has length 484 [2021-11-21 00:25:02,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:25:02,567 INFO L470 AbstractCegarLoop]: Abstraction has 11781 states and 16241 transitions. [2021-11-21 00:25:02,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 3 states have call successors, (74), 3 states have call predecessors, (74), 3 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2021-11-21 00:25:02,568 INFO L276 IsEmpty]: Start isEmpty. Operand 11781 states and 16241 transitions. [2021-11-21 00:25:02,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2021-11-21 00:25:02,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:25:02,592 INFO L514 BasicCegarLoop]: trace histogram [25, 17, 17, 11, 11, 11, 11, 11, 11, 6, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:25:02,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:25:02,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:25:02,815 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:25:02,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:25:02,816 INFO L85 PathProgramCache]: Analyzing trace with hash -201518163, now seen corresponding path program 1 times [2021-11-21 00:25:02,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:25:02,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567235663] [2021-11-21 00:25:02,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:25:02,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:25:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:25:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1473 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2021-11-21 00:25:03,180 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:25:03,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567235663] [2021-11-21 00:25:03,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567235663] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:25:03,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547815271] [2021-11-21 00:25:03,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:25:03,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:25:03,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:25:03,183 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:25:03,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:25:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:25:04,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 4616 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:25:04,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:25:05,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1473 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2021-11-21 00:25:05,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:25:05,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547815271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:25:05,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:25:05,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 00:25:05,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271795872] [2021-11-21 00:25:05,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:25:05,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:25:05,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:25:05,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:25:05,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:25:05,749 INFO L87 Difference]: Start difference. First operand 11781 states and 16241 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 3 states have call successors, (77), 3 states have call predecessors, (77), 3 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) [2021-11-21 00:25:08,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:25:08,600 INFO L93 Difference]: Finished difference Result 27480 states and 37849 transitions. [2021-11-21 00:25:08,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:25:08,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 3 states have call successors, (77), 3 states have call predecessors, (77), 3 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) Word has length 504 [2021-11-21 00:25:08,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:25:08,671 INFO L225 Difference]: With dead ends: 27480 [2021-11-21 00:25:08,672 INFO L226 Difference]: Without dead ends: 15839 [2021-11-21 00:25:08,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:25:08,713 INFO L933 BasicCegarLoop]: 1809 mSDtfsCounter, 1640 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:25:08,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1640 Valid, 3096 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-21 00:25:08,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15839 states. [2021-11-21 00:25:09,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15839 to 15836. [2021-11-21 00:25:09,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15836 states, 9631 states have (on average 1.25957844460596) internal successors, (12131), 10010 states have internal predecessors, (12131), 4811 states have call successors, (4811), 1403 states have call predecessors, (4811), 1392 states have return successors, (4826), 4717 states have call predecessors, (4826), 4811 states have call successors, (4826) [2021-11-21 00:25:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15836 states to 15836 states and 21768 transitions. [2021-11-21 00:25:09,889 INFO L78 Accepts]: Start accepts. Automaton has 15836 states and 21768 transitions. Word has length 504 [2021-11-21 00:25:09,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:25:09,890 INFO L470 AbstractCegarLoop]: Abstraction has 15836 states and 21768 transitions. [2021-11-21 00:25:09,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 3 states have call successors, (77), 3 states have call predecessors, (77), 3 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) [2021-11-21 00:25:09,890 INFO L276 IsEmpty]: Start isEmpty. Operand 15836 states and 21768 transitions. [2021-11-21 00:25:09,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2021-11-21 00:25:09,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:25:09,907 INFO L514 BasicCegarLoop]: trace histogram [25, 17, 17, 11, 11, 11, 11, 11, 11, 6, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:25:09,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:25:10,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-21 00:25:10,123 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:25:10,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:25:10,124 INFO L85 PathProgramCache]: Analyzing trace with hash 216204391, now seen corresponding path program 1 times [2021-11-21 00:25:10,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:25:10,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109186216] [2021-11-21 00:25:10,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:25:10,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:25:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:25:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1475 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 1447 trivial. 0 not checked. [2021-11-21 00:25:10,555 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:25:10,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109186216] [2021-11-21 00:25:10,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109186216] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:25:10,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123814812] [2021-11-21 00:25:10,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:25:10,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:25:10,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:25:10,558 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:25:10,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cd51a85-eaf2-40f2-90cc-b93ba49758d5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:25:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:25:11,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 4618 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:25:12,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:25:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1475 backedges. 505 proven. 1 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2021-11-21 00:25:13,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:25:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1475 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 1447 trivial. 0 not checked. [2021-11-21 00:25:14,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123814812] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:25:14,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1766784746] [2021-11-21 00:25:14,676 INFO L159 IcfgInterpreter]: Started Sifa with 264 locations of interest [2021-11-21 00:25:14,677 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:25:14,685 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:25:14,692 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:25:14,693 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs