./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.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_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/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_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/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_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/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 4ee317e42bc2e06685ca0df819e5fc98feaca323581d52409851fe6eefd66a2a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:00:14,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:00:14,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:00:14,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:00:14,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:00:14,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:00:14,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:00:14,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:00:14,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:00:14,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:00:14,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:00:14,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:00:14,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:00:14,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:00:14,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:00:14,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:00:14,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:00:14,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:00:14,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:00:14,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:00:14,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:00:14,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:00:14,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:00:14,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:00:14,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:00:14,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:00:14,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:00:14,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:00:14,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:00:14,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:00:14,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:00:14,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:00:14,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:00:14,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:00:14,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:00:14,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:00:14,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:00:14,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:00:14,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:00:14,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:00:14,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:00:14,339 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:00:14,377 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:00:14,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:00:14,378 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:00:14,379 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:00:14,380 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:00:14,380 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:00:14,380 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:00:14,380 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:00:14,381 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:00:14,381 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:00:14,382 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:00:14,382 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:00:14,382 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:00:14,383 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:00:14,383 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:00:14,383 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:00:14,384 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:00:14,384 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:00:14,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:00:14,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:00:14,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:00:14,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:00:14,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:00:14,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:00:14,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:00:14,386 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:00:14,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:00:14,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:00:14,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:00:14,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:00:14,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:00:14,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:00:14,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:00:14,390 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:00:14,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:00:14,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:00:14,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:00:14,391 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:00:14,391 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_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ee317e42bc2e06685ca0df819e5fc98feaca323581d52409851fe6eefd66a2a [2021-11-21 00:00:14,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:00:14,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:00:14,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:00:14,703 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:00:14,703 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:00:14,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2021-11-21 00:00:14,768 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/bin/utaipan-TEXQjIfE4P/data/a4343c0f5/9629efaa91994c1dbefdf9ef531da005/FLAGc0b8cab55 [2021-11-21 00:00:15,674 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:00:15,675 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2021-11-21 00:00:15,742 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/bin/utaipan-TEXQjIfE4P/data/a4343c0f5/9629efaa91994c1dbefdf9ef531da005/FLAGc0b8cab55 [2021-11-21 00:00:16,116 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/bin/utaipan-TEXQjIfE4P/data/a4343c0f5/9629efaa91994c1dbefdf9ef531da005 [2021-11-21 00:00:16,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:00:16,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:00:16,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:00:16,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:00:16,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:00:16,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:00:16" (1/1) ... [2021-11-21 00:00:16,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77928ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:16, skipping insertion in model container [2021-11-21 00:00:16,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:00:16" (1/1) ... [2021-11-21 00:00:16,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:00:16,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:00:19,050 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_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323320,323333] [2021-11-21 00:00:19,053 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_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323489,323502] [2021-11-21 00:00:19,053 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_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323656,323669] [2021-11-21 00:00:19,054 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_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323824,323837] [2021-11-21 00:00:19,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:00:19,121 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:00:19,588 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_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323320,323333] [2021-11-21 00:00:19,589 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_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323489,323502] [2021-11-21 00:00:19,589 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_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323656,323669] [2021-11-21 00:00:19,590 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_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323824,323837] [2021-11-21 00:00:19,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:00:19,822 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:00:19,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:19 WrapperNode [2021-11-21 00:00:19,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:00:19,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:00:19,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:00:19,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:00:19,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:19" (1/1) ... [2021-11-21 00:00:19,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:19" (1/1) ... [2021-11-21 00:00:20,196 INFO L137 Inliner]: procedures = 422, calls = 1985, calls flagged for inlining = 201, calls inlined = 184, statements flattened = 5029 [2021-11-21 00:00:20,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:00:20,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:00:20,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:00:20,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:00:20,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:19" (1/1) ... [2021-11-21 00:00:20,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:19" (1/1) ... [2021-11-21 00:00:20,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:19" (1/1) ... [2021-11-21 00:00:20,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:19" (1/1) ... [2021-11-21 00:00:20,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:19" (1/1) ... [2021-11-21 00:00:20,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:19" (1/1) ... [2021-11-21 00:00:20,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:19" (1/1) ... [2021-11-21 00:00:20,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:00:20,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:00:20,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:00:20,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:00:20,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:19" (1/1) ... [2021-11-21 00:00:20,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:00:20,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:00:20,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:00:20,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2651f5a-7bdf-41ba-8684-92b1e7d63f78/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:00:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 00:00:20,615 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 00:00:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:00:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:00:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-21 00:00:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-21 00:00:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_set_filter_mode [2021-11-21 00:00:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_set_filter_mode [2021-11-21 00:00:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 00:00:20,617 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 00:00:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:00:20,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:00:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_resume [2021-11-21 00:00:20,618 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_resume [2021-11-21 00:00:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 00:00:20,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 00:00:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 00:00:20,618 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 00:00:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_dmfe_board_info [2021-11-21 00:00:20,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_dmfe_board_info [2021-11-21 00:00:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 00:00:20,619 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 00:00:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-21 00:00:20,620 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-21 00:00:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-21 00:00:20,620 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-21 00:00:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2021-11-21 00:00:20,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2021-11-21 00:00:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-21 00:00:20,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-21 00:00:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-21 00:00:20,621 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-21 00:00:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_reuse_skb [2021-11-21 00:00:20,622 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_reuse_skb [2021-11-21 00:00:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2021-11-21 00:00:20,622 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2021-11-21 00:00:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 00:00:20,622 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 00:00:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:00:20,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:00:20,623 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 00:00:20,623 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 00:00:20,624 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-21 00:00:20,624 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-21 00:00:20,625 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 00:00:20,625 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 00:00:20,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:00:20,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:00:20,626 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2021-11-21 00:00:20,627 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2021-11-21 00:00:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:00:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure poll_dmfe [2021-11-21 00:00:20,627 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_dmfe [2021-11-21 00:00:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 00:00:20,627 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 00:00:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:00:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 00:00:20,628 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 00:00:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2021-11-21 00:00:20,628 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2021-11-21 00:00:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:00:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:00:20,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:00:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_remove_one [2021-11-21 00:00:20,629 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_remove_one [2021-11-21 00:00:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write_1bit [2021-11-21 00:00:20,629 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write_1bit [2021-11-21 00:00:20,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:00:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure dm9132_id_table [2021-11-21 00:00:20,635 INFO L138 BoogieDeclarations]: Found implementation of procedure dm9132_id_table [2021-11-21 00:00:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 00:00:20,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 00:00:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 00:00:20,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 00:00:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 00:00:20,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 00:00:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 00:00:20,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 00:00:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_interrupt [2021-11-21 00:00:20,637 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_interrupt [2021-11-21 00:00:20,637 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 00:00:20,637 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 00:00:20,637 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read_1bit [2021-11-21 00:00:20,637 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read_1bit [2021-11-21 00:00:20,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 00:00:20,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 00:00:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure cal_CRC [2021-11-21 00:00:20,638 INFO L138 BoogieDeclarations]: Found implementation of procedure cal_CRC [2021-11-21 00:00:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:00:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 00:00:20,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 00:00:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:00:20,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:00:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:00:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_rx_buffer [2021-11-21 00:00:20,639 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_rx_buffer [2021-11-21 00:00:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:00:20,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:00:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 00:00:20,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 00:00:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:00:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-21 00:00:20,641 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-21 00:00:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:00:20,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:00:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-21 00:00:20,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-21 00:00:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_free_rxbuffer [2021-11-21 00:00:20,642 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_free_rxbuffer [2021-11-21 00:00:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 00:00:20,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 00:00:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 00:00:20,642 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 00:00:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 00:00:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 00:00:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 00:00:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 00:00:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_stop [2021-11-21 00:00:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_stop [2021-11-21 00:00:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:00:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:00:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:00:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:00:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:00:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:00:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 00:00:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 00:00:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 00:00:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 00:00:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_open [2021-11-21 00:00:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_open [2021-11-21 00:00:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 00:00:20,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 00:00:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 00:00:20,646 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 00:00:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2021-11-21 00:00:20,646 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2021-11-21 00:00:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 00:00:20,647 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 00:00:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-21 00:00:20,647 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-21 00:00:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure send_filter_frame [2021-11-21 00:00:20,647 INFO L138 BoogieDeclarations]: Found implementation of procedure send_filter_frame [2021-11-21 00:00:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 00:00:20,648 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 00:00:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:00:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:00:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-21 00:00:20,648 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-21 00:00:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-21 00:00:20,649 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-21 00:00:20,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:00:20,649 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_init_dm910x [2021-11-21 00:00:20,649 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_init_dm910x [2021-11-21 00:00:20,649 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 00:00:20,649 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 00:00:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:00:20,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:00:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-21 00:00:20,650 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-21 00:00:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 00:00:20,650 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 00:00:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure update_cr6 [2021-11-21 00:00:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure update_cr6 [2021-11-21 00:00:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:00:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:00:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:00:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure srom_clk_write [2021-11-21 00:00:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_clk_write [2021-11-21 00:00:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_dmfe_cleanup_module_14_2 [2021-11-21 00:00:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_dmfe_cleanup_module_14_2 [2021-11-21 00:00:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2021-11-21 00:00:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2021-11-21 00:00:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:00:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:00:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-21 00:00:20,653 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-21 00:00:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-21 00:00:20,653 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-21 00:00:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:00:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:00:20,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:00:21,477 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:00:21,480 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:00:21,727 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:00:24,785 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:00:24,858 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:00:26,342 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:00:26,342 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:00:26,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:00:26 BoogieIcfgContainer [2021-11-21 00:00:26,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:00:26,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:00:26,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:00:26,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:00:26,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:00:16" (1/3) ... [2021-11-21 00:00:26,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f47075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:00:26, skipping insertion in model container [2021-11-21 00:00:26,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:19" (2/3) ... [2021-11-21 00:00:26,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f47075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:00:26, skipping insertion in model container [2021-11-21 00:00:26,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:00:26" (3/3) ... [2021-11-21 00:00:26,357 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2021-11-21 00:00:26,362 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:00:26,363 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 00:00:26,430 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:00:26,448 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 00:00:26,448 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 00:00:26,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 1182 states, 677 states have (on average 1.2983751846381093) internal successors, (879), 700 states have internal predecessors, (879), 420 states have call successors, (420), 83 states have call predecessors, (420), 82 states have return successors, (414), 405 states have call predecessors, (414), 414 states have call successors, (414) [2021-11-21 00:00:26,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-21 00:00:26,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:26,541 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:00:26,542 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 00:00:26,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:26,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1063298655, now seen corresponding path program 1 times [2021-11-21 00:00:26,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:26,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481986215] [2021-11-21 00:00:26,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:26,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:27,227 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-21 00:00:27,228 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:27,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481986215] [2021-11-21 00:00:27,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481986215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:00:27,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:00:27,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:00:27,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204607692] [2021-11-21 00:00:27,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:00:27,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:00:27,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:27,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:00:27,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:00:27,276 INFO L87 Difference]: Start difference. First operand has 1182 states, 677 states have (on average 1.2983751846381093) internal successors, (879), 700 states have internal predecessors, (879), 420 states have call successors, (420), 83 states have call predecessors, (420), 82 states have return successors, (414), 405 states have call predecessors, (414), 414 states have call successors, (414) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-21 00:00:30,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:30,128 INFO L93 Difference]: Finished difference Result 3430 states and 5034 transitions. [2021-11-21 00:00:30,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:00:30,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2021-11-21 00:00:30,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:30,170 INFO L225 Difference]: With dead ends: 3430 [2021-11-21 00:00:30,170 INFO L226 Difference]: Without dead ends: 2255 [2021-11-21 00:00:30,183 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 00:00:30,187 INFO L933 BasicCegarLoop]: 1821 mSDtfsCounter, 1597 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:30,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1597 Valid, 3219 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-21 00:00:30,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2021-11-21 00:00:30,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2251. [2021-11-21 00:00:30,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 1301 states have (on average 1.2890084550345888) internal successors, (1677), 1346 states have internal predecessors, (1677), 787 states have call successors, (787), 161 states have call predecessors, (787), 160 states have return successors, (783), 765 states have call predecessors, (783), 783 states have call successors, (783) [2021-11-21 00:00:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3247 transitions. [2021-11-21 00:00:30,421 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3247 transitions. Word has length 101 [2021-11-21 00:00:30,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:30,422 INFO L470 AbstractCegarLoop]: Abstraction has 2251 states and 3247 transitions. [2021-11-21 00:00:30,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-21 00:00:30,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3247 transitions. [2021-11-21 00:00:30,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-21 00:00:30,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:30,430 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:00:30,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:00:30,431 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 00:00:30,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:30,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1155850056, now seen corresponding path program 1 times [2021-11-21 00:00:30,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:30,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962453377] [2021-11-21 00:00:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:30,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-21 00:00:30,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:30,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962453377] [2021-11-21 00:00:30,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962453377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:00:30,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:00:30,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:00:30,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272785798] [2021-11-21 00:00:30,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:00:30,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:00:30,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:30,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:00:30,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:00:30,611 INFO L87 Difference]: Start difference. First operand 2251 states and 3247 transitions. 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, (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 00:00:32,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:00:34,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:34,731 INFO L93 Difference]: Finished difference Result 6661 states and 9617 transitions. [2021-11-21 00:00:34,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:00:34,732 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, (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 105 [2021-11-21 00:00:34,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:34,789 INFO L225 Difference]: With dead ends: 6661 [2021-11-21 00:00:34,790 INFO L226 Difference]: Without dead ends: 4427 [2021-11-21 00:00:34,813 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 00:00:34,815 INFO L933 BasicCegarLoop]: 1853 mSDtfsCounter, 1640 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 3249 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:34,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1640 Valid, 3249 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-21 00:00:34,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4427 states. [2021-11-21 00:00:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4427 to 4397. [2021-11-21 00:00:35,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4397 states, 2555 states have (on average 1.2915851272015655) internal successors, (3300), 2649 states have internal predecessors, (3300), 1522 states have call successors, (1522), 320 states have call predecessors, (1522), 317 states have return successors, (1528), 1471 states have call predecessors, (1528), 1518 states have call successors, (1528) [2021-11-21 00:00:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 6350 transitions. [2021-11-21 00:00:35,220 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 6350 transitions. Word has length 105 [2021-11-21 00:00:35,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:35,221 INFO L470 AbstractCegarLoop]: Abstraction has 4397 states and 6350 transitions. [2021-11-21 00:00:35,221 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, (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 00:00:35,223 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 6350 transitions. [2021-11-21 00:00:35,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-21 00:00:35,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:35,229 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:00:35,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:00:35,230 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 00:00:35,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:35,231 INFO L85 PathProgramCache]: Analyzing trace with hash -331408805, now seen corresponding path program 1 times [2021-11-21 00:00:35,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:35,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927395544] [2021-11-21 00:00:35,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:35,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-21 00:00:35,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:35,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927395544] [2021-11-21 00:00:35,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927395544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:00:35,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:00:35,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:00:35,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563962443] [2021-11-21 00:00:35,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:00:35,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:00:35,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:35,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:00:35,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:00:35,442 INFO L87 Difference]: Start difference. First operand 4397 states and 6350 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-21 00:00:38,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:38,151 INFO L93 Difference]: Finished difference Result 12551 states and 18094 transitions. [2021-11-21 00:00:38,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:00:38,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2021-11-21 00:00:38,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:38,244 INFO L225 Difference]: With dead ends: 12551 [2021-11-21 00:00:38,245 INFO L226 Difference]: Without dead ends: 8171 [2021-11-21 00:00:38,280 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 00:00:38,285 INFO L933 BasicCegarLoop]: 1843 mSDtfsCounter, 1454 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:38,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 3232 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-21 00:00:38,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8171 states. [2021-11-21 00:00:38,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8171 to 8137. [2021-11-21 00:00:38,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8137 states, 4739 states have (on average 1.293943870014771) internal successors, (6132), 4921 states have internal predecessors, (6132), 2784 states have call successors, (2784), 618 states have call predecessors, (2784), 611 states have return successors, (2806), 2681 states have call predecessors, (2806), 2780 states have call successors, (2806) [2021-11-21 00:00:38,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8137 states to 8137 states and 11722 transitions. [2021-11-21 00:00:38,887 INFO L78 Accepts]: Start accepts. Automaton has 8137 states and 11722 transitions. Word has length 105 [2021-11-21 00:00:38,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:38,888 INFO L470 AbstractCegarLoop]: Abstraction has 8137 states and 11722 transitions. [2021-11-21 00:00:38,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-21 00:00:38,890 INFO L276 IsEmpty]: Start isEmpty. Operand 8137 states and 11722 transitions. [2021-11-21 00:00:38,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-21 00:00:38,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:38,894 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:00:38,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:00:38,894 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:00:38,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:38,895 INFO L85 PathProgramCache]: Analyzing trace with hash -197312477, now seen corresponding path program 1 times [2021-11-21 00:00:38,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:38,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129822071] [2021-11-21 00:00:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:38,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:39,157 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-21 00:00:39,157 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:39,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129822071] [2021-11-21 00:00:39,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129822071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:00:39,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:00:39,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:00:39,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003001147] [2021-11-21 00:00:39,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:00:39,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:00:39,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:39,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:00:39,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:00:39,161 INFO L87 Difference]: Start difference. First operand 8137 states and 11722 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-21 00:00:46,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:46,497 INFO L93 Difference]: Finished difference Result 18696 states and 26839 transitions. [2021-11-21 00:00:46,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:00:46,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 108 [2021-11-21 00:00:46,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:46,593 INFO L225 Difference]: With dead ends: 18696 [2021-11-21 00:00:46,593 INFO L226 Difference]: Without dead ends: 10576 [2021-11-21 00:00:46,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:00:46,645 INFO L933 BasicCegarLoop]: 2147 mSDtfsCounter, 3552 mSDsluCounter, 3743 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3651 SdHoareTripleChecker+Valid, 5117 SdHoareTripleChecker+Invalid, 2994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:46,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3651 Valid, 5117 Invalid, 2994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 2489 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2021-11-21 00:00:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10576 states. [2021-11-21 00:00:47,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10576 to 10504. [2021-11-21 00:00:47,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10504 states, 6287 states have (on average 1.3034833783998727) internal successors, (8195), 6538 states have internal predecessors, (8195), 3375 states have call successors, (3375), 854 states have call predecessors, (3375), 839 states have return successors, (3384), 3221 states have call predecessors, (3384), 3371 states have call successors, (3384) [2021-11-21 00:00:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10504 states to 10504 states and 14954 transitions. [2021-11-21 00:00:47,333 INFO L78 Accepts]: Start accepts. Automaton has 10504 states and 14954 transitions. Word has length 108 [2021-11-21 00:00:47,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:47,334 INFO L470 AbstractCegarLoop]: Abstraction has 10504 states and 14954 transitions. [2021-11-21 00:00:47,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-21 00:00:47,335 INFO L276 IsEmpty]: Start isEmpty. Operand 10504 states and 14954 transitions. [2021-11-21 00:00:47,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-21 00:00:47,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:47,338 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:00:47,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:00:47,338 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:00:47,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:47,341 INFO L85 PathProgramCache]: Analyzing trace with hash 198267755, now seen corresponding path program 1 times [2021-11-21 00:00:47,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:47,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608792424] [2021-11-21 00:00:47,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:47,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-21 00:00:47,515 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:47,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608792424] [2021-11-21 00:00:47,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608792424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:00:47,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:00:47,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:00:47,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034457674] [2021-11-21 00:00:47,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:00:47,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:00:47,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:47,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:00:47,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:00:47,518 INFO L87 Difference]: Start difference. First operand 10504 states and 14954 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-21 00:00:50,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:50,452 INFO L93 Difference]: Finished difference Result 27897 states and 39637 transitions. [2021-11-21 00:00:50,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:00:50,453 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 110 [2021-11-21 00:00:50,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:50,588 INFO L225 Difference]: With dead ends: 27897 [2021-11-21 00:00:50,589 INFO L226 Difference]: Without dead ends: 17410 [2021-11-21 00:00:50,652 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 00:00:50,654 INFO L933 BasicCegarLoop]: 1803 mSDtfsCounter, 1520 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:50,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 3188 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-21 00:00:50,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17410 states. [2021-11-21 00:00:51,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17410 to 17378. [2021-11-21 00:00:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17378 states, 10333 states have (on average 1.2898480596148263) internal successors, (13328), 10738 states have internal predecessors, (13328), 5622 states have call successors, (5622), 1449 states have call predecessors, (5622), 1420 states have return successors, (5647), 5349 states have call predecessors, (5647), 5618 states have call successors, (5647) [2021-11-21 00:00:51,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17378 states to 17378 states and 24597 transitions. [2021-11-21 00:00:51,815 INFO L78 Accepts]: Start accepts. Automaton has 17378 states and 24597 transitions. Word has length 110 [2021-11-21 00:00:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:51,817 INFO L470 AbstractCegarLoop]: Abstraction has 17378 states and 24597 transitions. [2021-11-21 00:00:51,817 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-21 00:00:51,817 INFO L276 IsEmpty]: Start isEmpty. Operand 17378 states and 24597 transitions. [2021-11-21 00:00:51,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-21 00:00:51,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:51,819 INFO L514 BasicCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 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] [2021-11-21 00:00:51,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:00:51,820 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:00:51,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:51,821 INFO L85 PathProgramCache]: Analyzing trace with hash 563933831, now seen corresponding path program 1 times [2021-11-21 00:00:51,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:51,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632516764] [2021-11-21 00:00:51,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:51,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-11-21 00:00:51,968 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:51,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632516764] [2021-11-21 00:00:51,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632516764] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:00:51,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:00:51,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:00:51,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333691630] [2021-11-21 00:00:51,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:00:51,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:00:51,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:51,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:00:51,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:00:51,971 INFO L87 Difference]: Start difference. First operand 17378 states and 24597 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-21 00:00:55,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:55,622 INFO L93 Difference]: Finished difference Result 50976 states and 72189 transitions. [2021-11-21 00:00:55,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:00:55,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2021-11-21 00:00:55,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:55,850 INFO L225 Difference]: With dead ends: 50976 [2021-11-21 00:00:55,851 INFO L226 Difference]: Without dead ends: 33615 [2021-11-21 00:00:55,935 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 00:00:55,936 INFO L933 BasicCegarLoop]: 2018 mSDtfsCounter, 1647 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 3440 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:55,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1647 Valid, 3440 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-21 00:00:55,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33615 states. [2021-11-21 00:00:57,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33615 to 33541. [2021-11-21 00:00:57,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33541 states, 19920 states have (on average 1.2901606425702812) internal successors, (25700), 20748 states have internal predecessors, (25700), 10865 states have call successors, (10865), 2810 states have call predecessors, (10865), 2753 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2021-11-21 00:00:58,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33541 states to 33541 states and 47484 transitions. [2021-11-21 00:00:58,395 INFO L78 Accepts]: Start accepts. Automaton has 33541 states and 47484 transitions. Word has length 123 [2021-11-21 00:00:58,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:58,396 INFO L470 AbstractCegarLoop]: Abstraction has 33541 states and 47484 transitions. [2021-11-21 00:00:58,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-21 00:00:58,397 INFO L276 IsEmpty]: Start isEmpty. Operand 33541 states and 47484 transitions. [2021-11-21 00:00:58,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-21 00:00:58,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:58,413 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 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 00:00:58,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:00:58,413 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 00:00:58,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:58,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1458511418, now seen corresponding path program 1 times [2021-11-21 00:00:58,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:58,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250608686] [2021-11-21 00:00:58,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:58,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-21 00:00:58,790 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:58,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250608686] [2021-11-21 00:00:58,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250608686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:00:58,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:00:58,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:00:58,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951955783] [2021-11-21 00:00:58,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:00:58,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:00:58,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:58,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:00:58,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:00:58,792 INFO L87 Difference]: Start difference. First operand 33541 states and 47484 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-21 00:01:02,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:01:02,328 INFO L93 Difference]: Finished difference Result 33547 states and 47489 transitions. [2021-11-21 00:01:02,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:01:02,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2021-11-21 00:01:02,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:01:02,531 INFO L225 Difference]: With dead ends: 33547 [2021-11-21 00:01:02,531 INFO L226 Difference]: Without dead ends: 33545 [2021-11-21 00:01:02,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:01:02,555 INFO L933 BasicCegarLoop]: 1421 mSDtfsCounter, 1639 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 4249 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:01:02,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1651 Valid, 4249 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-21 00:01:02,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33545 states. [2021-11-21 00:01:04,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33545 to 33545. [2021-11-21 00:01:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33545 states, 19923 states have (on average 1.2901169502584953) internal successors, (25703), 20751 states have internal predecessors, (25703), 10865 states have call successors, (10865), 2811 states have call predecessors, (10865), 2754 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2021-11-21 00:01:05,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33545 states to 33545 states and 47487 transitions. [2021-11-21 00:01:05,476 INFO L78 Accepts]: Start accepts. Automaton has 33545 states and 47487 transitions. Word has length 146 [2021-11-21 00:01:05,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:01:05,477 INFO L470 AbstractCegarLoop]: Abstraction has 33545 states and 47487 transitions. [2021-11-21 00:01:05,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-21 00:01:05,478 INFO L276 IsEmpty]: Start isEmpty. Operand 33545 states and 47487 transitions. [2021-11-21 00:01:05,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-21 00:01:05,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:01:05,482 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:01:05,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:01:05,482 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 00:01:05,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:01:05,484 INFO L85 PathProgramCache]: Analyzing trace with hash -48427560, now seen corresponding path program 1 times [2021-11-21 00:01:05,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:01:05,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010285583] [2021-11-21 00:01:05,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:05,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:01:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:05,759 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-21 00:01:05,760 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:05,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010285583] [2021-11-21 00:01:05,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010285583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:05,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:01:05,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:01:05,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326230530] [2021-11-21 00:01:05,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:05,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:01:05,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:05,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:01:05,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:01:05,762 INFO L87 Difference]: Start difference. First operand 33545 states and 47487 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, (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 00:01:09,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:01:09,798 INFO L93 Difference]: Finished difference Result 33551 states and 47492 transitions. [2021-11-21 00:01:09,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:01:09,799 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, (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 151 [2021-11-21 00:01:09,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:01:10,058 INFO L225 Difference]: With dead ends: 33551 [2021-11-21 00:01:10,058 INFO L226 Difference]: Without dead ends: 33549 [2021-11-21 00:01:10,087 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 00:01:10,088 INFO L933 BasicCegarLoop]: 1424 mSDtfsCounter, 1634 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:01:10,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1645 Valid, 4252 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-21 00:01:10,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33549 states. [2021-11-21 00:01:12,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33549 to 33549. [2021-11-21 00:01:12,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33549 states, 19926 states have (on average 1.2900732711030813) internal successors, (25706), 20754 states have internal predecessors, (25706), 10865 states have call successors, (10865), 2812 states have call predecessors, (10865), 2755 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2021-11-21 00:01:12,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33549 states to 33549 states and 47490 transitions. [2021-11-21 00:01:12,586 INFO L78 Accepts]: Start accepts. Automaton has 33549 states and 47490 transitions. Word has length 151 [2021-11-21 00:01:12,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:01:12,591 INFO L470 AbstractCegarLoop]: Abstraction has 33549 states and 47490 transitions. [2021-11-21 00:01:12,591 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, (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 00:01:12,591 INFO L276 IsEmpty]: Start isEmpty. Operand 33549 states and 47490 transitions. [2021-11-21 00:01:12,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-21 00:01:12,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:01:12,597 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:01:12,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:01:12,597 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 00:01:12,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:01:12,598 INFO L85 PathProgramCache]: Analyzing trace with hash 252135610, now seen corresponding path program 1 times [2021-11-21 00:01:12,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:01:12,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870354112] [2021-11-21 00:01:12,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:12,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:01:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2021-11-21 00:01:12,868 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:12,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870354112] [2021-11-21 00:01:12,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870354112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:12,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:01:12,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:01:12,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730414185] [2021-11-21 00:01:12,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:12,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:01:12,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:12,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:01:12,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:01:12,873 INFO L87 Difference]: Start difference. First operand 33549 states and 47490 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, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 00:01:15,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:17,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:01:17,709 INFO L93 Difference]: Finished difference Result 33555 states and 47495 transitions. [2021-11-21 00:01:17,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:01:17,710 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, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 156 [2021-11-21 00:01:17,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:01:17,885 INFO L225 Difference]: With dead ends: 33555 [2021-11-21 00:01:17,885 INFO L226 Difference]: Without dead ends: 33553 [2021-11-21 00:01:17,903 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 00:01:17,904 INFO L933 BasicCegarLoop]: 1424 mSDtfsCounter, 1634 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:01:17,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1644 Valid, 4252 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-21 00:01:17,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33553 states. [2021-11-21 00:01:19,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33553 to 33553. [2021-11-21 00:01:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33553 states, 19929 states have (on average 1.2900296050980982) internal successors, (25709), 20757 states have internal predecessors, (25709), 10865 states have call successors, (10865), 2813 states have call predecessors, (10865), 2756 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2021-11-21 00:01:20,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33553 states to 33553 states and 47493 transitions. [2021-11-21 00:01:20,256 INFO L78 Accepts]: Start accepts. Automaton has 33553 states and 47493 transitions. Word has length 156 [2021-11-21 00:01:20,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:01:20,257 INFO L470 AbstractCegarLoop]: Abstraction has 33553 states and 47493 transitions. [2021-11-21 00:01:20,257 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, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 00:01:20,257 INFO L276 IsEmpty]: Start isEmpty. Operand 33553 states and 47493 transitions. [2021-11-21 00:01:20,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-21 00:01:20,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:01:20,267 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:01:20,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:01:20,268 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 00:01:20,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:01:20,269 INFO L85 PathProgramCache]: Analyzing trace with hash 439722712, now seen corresponding path program 1 times [2021-11-21 00:01:20,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:01:20,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565640308] [2021-11-21 00:01:20,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:20,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:01:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:20,529 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2021-11-21 00:01:20,530 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:20,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565640308] [2021-11-21 00:01:20,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565640308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:20,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:01:20,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:01:20,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342937144] [2021-11-21 00:01:20,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:20,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:01:20,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:20,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:01:20,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:01:20,533 INFO L87 Difference]: Start difference. First operand 33553 states and 47493 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, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 00:01:22,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:25,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:01:25,076 INFO L93 Difference]: Finished difference Result 33559 states and 47498 transitions. [2021-11-21 00:01:25,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:01:25,077 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, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 161 [2021-11-21 00:01:25,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:01:25,320 INFO L225 Difference]: With dead ends: 33559 [2021-11-21 00:01:25,320 INFO L226 Difference]: Without dead ends: 33557 [2021-11-21 00:01:25,335 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 00:01:25,336 INFO L933 BasicCegarLoop]: 1424 mSDtfsCounter, 1634 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:01:25,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1643 Valid, 4252 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-21 00:01:25,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33557 states. [2021-11-21 00:01:27,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33557 to 33557. [2021-11-21 00:01:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33557 states, 19932 states have (on average 1.2899859522376078) internal successors, (25712), 20760 states have internal predecessors, (25712), 10865 states have call successors, (10865), 2814 states have call predecessors, (10865), 2757 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2021-11-21 00:01:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33557 states to 33557 states and 47496 transitions. [2021-11-21 00:01:27,364 INFO L78 Accepts]: Start accepts. Automaton has 33557 states and 47496 transitions. Word has length 161 [2021-11-21 00:01:27,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:01:27,365 INFO L470 AbstractCegarLoop]: Abstraction has 33557 states and 47496 transitions. [2021-11-21 00:01:27,365 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, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 00:01:27,365 INFO L276 IsEmpty]: Start isEmpty. Operand 33557 states and 47496 transitions. [2021-11-21 00:01:27,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-21 00:01:27,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:01:27,371 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 5, 4, 4, 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] [2021-11-21 00:01:27,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:01:27,372 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 00:01:27,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:01:27,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1556217030, now seen corresponding path program 1 times [2021-11-21 00:01:27,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:01:27,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279695499] [2021-11-21 00:01:27,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:27,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:01:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-11-21 00:01:27,569 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:27,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279695499] [2021-11-21 00:01:27,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279695499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:27,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:01:27,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:01:27,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521899100] [2021-11-21 00:01:27,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:27,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:01:27,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:27,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:01:27,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:01:27,572 INFO L87 Difference]: Start difference. First operand 33557 states and 47496 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 00:01:32,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:01:32,064 INFO L93 Difference]: Finished difference Result 33563 states and 47501 transitions. [2021-11-21 00:01:32,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:01:32,065 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 166 [2021-11-21 00:01:32,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:01:32,205 INFO L225 Difference]: With dead ends: 33563 [2021-11-21 00:01:32,205 INFO L226 Difference]: Without dead ends: 33561 [2021-11-21 00:01:32,227 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 00:01:32,228 INFO L933 BasicCegarLoop]: 1424 mSDtfsCounter, 1634 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:01:32,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1642 Valid, 4252 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-21 00:01:32,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33561 states. [2021-11-21 00:01:33,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33561 to 33561. [2021-11-21 00:01:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33561 states, 19935 states have (on average 1.289942312515676) internal successors, (25715), 20763 states have internal predecessors, (25715), 10865 states have call successors, (10865), 2815 states have call predecessors, (10865), 2758 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2021-11-21 00:01:34,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33561 states to 33561 states and 47499 transitions. [2021-11-21 00:01:34,035 INFO L78 Accepts]: Start accepts. Automaton has 33561 states and 47499 transitions. Word has length 166 [2021-11-21 00:01:34,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:01:34,035 INFO L470 AbstractCegarLoop]: Abstraction has 33561 states and 47499 transitions. [2021-11-21 00:01:34,035 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 00:01:34,036 INFO L276 IsEmpty]: Start isEmpty. Operand 33561 states and 47499 transitions. [2021-11-21 00:01:34,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-21 00:01:34,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:01:34,042 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:01:34,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:01:34,043 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 00:01:34,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:01:34,044 INFO L85 PathProgramCache]: Analyzing trace with hash -137779240, now seen corresponding path program 1 times [2021-11-21 00:01:34,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:01:34,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652548605] [2021-11-21 00:01:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:34,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:01:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2021-11-21 00:01:34,255 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:34,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652548605] [2021-11-21 00:01:34,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652548605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:34,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:01:34,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:01:34,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713598507] [2021-11-21 00:01:34,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:34,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:01:34,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:34,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:01:34,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:01:34,258 INFO L87 Difference]: Start difference. First operand 33561 states and 47499 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 00:01:38,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:01:38,143 INFO L93 Difference]: Finished difference Result 33567 states and 47504 transitions. [2021-11-21 00:01:38,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:01:38,144 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 171 [2021-11-21 00:01:38,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:01:38,270 INFO L225 Difference]: With dead ends: 33567 [2021-11-21 00:01:38,270 INFO L226 Difference]: Without dead ends: 33565 [2021-11-21 00:01:38,285 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 00:01:38,285 INFO L933 BasicCegarLoop]: 1424 mSDtfsCounter, 1634 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:01:38,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1641 Valid, 4252 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-21 00:01:38,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33565 states. [2021-11-21 00:01:40,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33565 to 33565. [2021-11-21 00:01:40,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33565 states, 19938 states have (on average 1.2898986859263717) internal successors, (25718), 20766 states have internal predecessors, (25718), 10865 states have call successors, (10865), 2816 states have call predecessors, (10865), 2759 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2021-11-21 00:01:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33565 states to 33565 states and 47502 transitions. [2021-11-21 00:01:40,203 INFO L78 Accepts]: Start accepts. Automaton has 33565 states and 47502 transitions. Word has length 171 [2021-11-21 00:01:40,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:01:40,204 INFO L470 AbstractCegarLoop]: Abstraction has 33565 states and 47502 transitions. [2021-11-21 00:01:40,204 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 00:01:40,205 INFO L276 IsEmpty]: Start isEmpty. Operand 33565 states and 47502 transitions. [2021-11-21 00:01:40,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-21 00:01:40,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:01:40,212 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:01:40,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 00:01:40,213 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 00:01:40,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:01:40,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1432400454, now seen corresponding path program 1 times [2021-11-21 00:01:40,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:01:40,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834412910] [2021-11-21 00:01:40,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:40,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:01:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2021-11-21 00:01:40,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:40,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834412910] [2021-11-21 00:01:40,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834412910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:40,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:01:40,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:01:40,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434727496] [2021-11-21 00:01:40,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:40,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:01:40,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:40,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:01:40,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:01:40,593 INFO L87 Difference]: Start difference. First operand 33565 states and 47502 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 00:01:42,618 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:45,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:01:45,106 INFO L93 Difference]: Finished difference Result 33571 states and 47507 transitions. [2021-11-21 00:01:45,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:01:45,108 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 176 [2021-11-21 00:01:45,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:01:45,284 INFO L225 Difference]: With dead ends: 33571 [2021-11-21 00:01:45,285 INFO L226 Difference]: Without dead ends: 33569 [2021-11-21 00:01:45,306 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 00:01:45,307 INFO L933 BasicCegarLoop]: 1424 mSDtfsCounter, 1634 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:01:45,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1640 Valid, 4252 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-21 00:01:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33569 states. [2021-11-21 00:01:47,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33569 to 33569. [2021-11-21 00:01:47,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33569 states, 19941 states have (on average 1.289855072463768) internal successors, (25721), 20769 states have internal predecessors, (25721), 10865 states have call successors, (10865), 2817 states have call predecessors, (10865), 2760 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2021-11-21 00:01:47,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33569 states to 33569 states and 47505 transitions. [2021-11-21 00:01:47,644 INFO L78 Accepts]: Start accepts. Automaton has 33569 states and 47505 transitions. Word has length 176 [2021-11-21 00:01:47,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:01:47,645 INFO L470 AbstractCegarLoop]: Abstraction has 33569 states and 47505 transitions. [2021-11-21 00:01:47,645 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 00:01:47,645 INFO L276 IsEmpty]: Start isEmpty. Operand 33569 states and 47505 transitions. [2021-11-21 00:01:47,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-21 00:01:47,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:01:47,652 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 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 00:01:47,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 00:01:47,652 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 00:01:47,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:01:47,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2041766696, now seen corresponding path program 1 times [2021-11-21 00:01:47,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:01:47,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099020428] [2021-11-21 00:01:47,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:47,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:01:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2021-11-21 00:01:47,853 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:47,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099020428] [2021-11-21 00:01:47,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099020428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:47,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:01:47,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:01:47,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060750995] [2021-11-21 00:01:47,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:47,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:01:47,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:47,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:01:47,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:01:47,856 INFO L87 Difference]: Start difference. First operand 33569 states and 47505 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 00:01:53,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:01:53,556 INFO L93 Difference]: Finished difference Result 37299 states and 52094 transitions. [2021-11-21 00:01:53,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:01:53,557 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 181 [2021-11-21 00:01:53,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:01:53,703 INFO L225 Difference]: With dead ends: 37299 [2021-11-21 00:01:53,703 INFO L226 Difference]: Without dead ends: 37297 [2021-11-21 00:01:53,722 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 00:01:53,723 INFO L933 BasicCegarLoop]: 1636 mSDtfsCounter, 1245 mSDsluCounter, 4665 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 5596 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:01:53,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1250 Valid, 5596 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-21 00:01:53,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37297 states. [2021-11-21 00:01:55,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37297 to 37297. [2021-11-21 00:01:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37297 states, 22004 states have (on average 1.2812215960734412) internal successors, (28192), 22876 states have internal predecessors, (28192), 11923 states have call successors, (11923), 3424 states have call predecessors, (11923), 3367 states have return successors, (11977), 11342 states have call predecessors, (11977), 11919 states have call successors, (11977) [2021-11-21 00:01:56,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37297 states to 37297 states and 52092 transitions. [2021-11-21 00:01:56,124 INFO L78 Accepts]: Start accepts. Automaton has 37297 states and 52092 transitions. Word has length 181 [2021-11-21 00:01:56,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:01:56,124 INFO L470 AbstractCegarLoop]: Abstraction has 37297 states and 52092 transitions. [2021-11-21 00:01:56,124 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 00:01:56,125 INFO L276 IsEmpty]: Start isEmpty. Operand 37297 states and 52092 transitions. [2021-11-21 00:01:56,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-21 00:01:56,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:01:56,133 INFO L514 BasicCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:01:56,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 00:01:56,134 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 00:01:56,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:01:56,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1751327686, now seen corresponding path program 1 times [2021-11-21 00:01:56,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:01:56,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586682644] [2021-11-21 00:01:56,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:56,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:01:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2021-11-21 00:01:56,297 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:56,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586682644] [2021-11-21 00:01:56,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586682644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:56,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:01:56,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:01:56,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118292210] [2021-11-21 00:01:56,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:56,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:01:56,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:56,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:01:56,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:01:56,300 INFO L87 Difference]: Start difference. First operand 37297 states and 52092 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-21 00:02:01,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:02:01,754 INFO L93 Difference]: Finished difference Result 83263 states and 116334 transitions. [2021-11-21 00:02:01,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:02:01,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 181 [2021-11-21 00:02:01,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:02:01,933 INFO L225 Difference]: With dead ends: 83263 [2021-11-21 00:02:01,934 INFO L226 Difference]: Without dead ends: 46029 [2021-11-21 00:02:02,115 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 00:02:02,119 INFO L933 BasicCegarLoop]: 2147 mSDtfsCounter, 1170 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:02:02,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1170 Valid, 3533 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-21 00:02:02,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46029 states.