./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-uli526x.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_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/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_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/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-uli526x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/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_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/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 b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:13:36,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:13:36,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:13:36,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:13:36,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:13:36,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:13:36,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:13:36,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:13:36,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:13:36,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:13:36,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:13:36,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:13:36,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:13:36,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:13:36,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:13:36,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:13:36,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:13:36,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:13:36,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:13:36,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:13:36,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:13:36,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:13:36,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:13:36,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:13:36,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:13:36,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:13:36,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:13:36,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:13:36,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:13:36,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:13:36,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:13:36,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:13:36,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:13:36,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:13:36,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:13:36,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:13:36,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:13:36,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:13:36,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:13:36,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:13:36,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:13:36,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:13:36,299 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:13:36,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:13:36,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:13:36,300 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:13:36,301 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:13:36,301 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:13:36,302 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:13:36,302 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:13:36,302 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:13:36,303 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:13:36,310 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:13:36,310 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:13:36,311 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:13:36,311 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:13:36,311 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:13:36,312 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:13:36,312 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:13:36,312 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:13:36,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:13:36,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:13:36,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:13:36,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:13:36,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:13:36,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:13:36,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:13:36,315 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:13:36,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:13:36,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:13:36,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:13:36,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:13:36,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:13:36,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:13:36,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:13:36,318 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:13:36,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:13:36,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:13:36,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:13:36,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:13:36,320 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_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 [2021-11-20 23:13:36,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:13:36,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:13:36,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:13:36,771 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:13:36,772 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:13:36,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-20 23:13:36,870 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/bin/utaipan-TEXQjIfE4P/data/3bf5aca0a/6074e9abc3614db090fb7d7a87fc1518/FLAG09ef2c9ad [2021-11-20 23:13:37,971 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:13:37,972 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-20 23:13:38,031 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/bin/utaipan-TEXQjIfE4P/data/3bf5aca0a/6074e9abc3614db090fb7d7a87fc1518/FLAG09ef2c9ad [2021-11-20 23:13:38,354 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/bin/utaipan-TEXQjIfE4P/data/3bf5aca0a/6074e9abc3614db090fb7d7a87fc1518 [2021-11-20 23:13:38,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:13:38,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:13:38,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:13:38,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:13:38,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:13:38,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:13:38" (1/1) ... [2021-11-20 23:13:38,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697e70aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:38, skipping insertion in model container [2021-11-20 23:13:38,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:13:38" (1/1) ... [2021-11-20 23:13:38,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:13:38,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:13:41,790 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_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2021-11-20 23:13:41,793 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_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2021-11-20 23:13:41,794 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_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2021-11-20 23:13:41,794 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_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2021-11-20 23:13:41,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:13:41,884 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:13:42,330 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_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2021-11-20 23:13:42,330 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_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2021-11-20 23:13:42,331 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_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2021-11-20 23:13:42,331 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_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2021-11-20 23:13:42,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:13:42,546 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:13:42,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:42 WrapperNode [2021-11-20 23:13:42,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:13:42,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:13:42,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:13:42,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:13:42,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:42" (1/1) ... [2021-11-20 23:13:42,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:42" (1/1) ... [2021-11-20 23:13:42,865 INFO L137 Inliner]: procedures = 412, calls = 1642, calls flagged for inlining = 194, calls inlined = 177, statements flattened = 4077 [2021-11-20 23:13:42,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:13:42,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:13:42,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:13:42,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:13:42,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:42" (1/1) ... [2021-11-20 23:13:42,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:42" (1/1) ... [2021-11-20 23:13:42,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:42" (1/1) ... [2021-11-20 23:13:42,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:42" (1/1) ... [2021-11-20 23:13:43,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:42" (1/1) ... [2021-11-20 23:13:43,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:42" (1/1) ... [2021-11-20 23:13:43,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:42" (1/1) ... [2021-11-20 23:13:43,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:13:43,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:13:43,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:13:43,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:13:43,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:42" (1/1) ... [2021-11-20 23:13:43,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:13:43,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:13:43,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:13:43,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620c0fd1-90a9-4ec8-a081-8efb4bb45b3b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:13:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-20 23:13:43,287 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-20 23:13:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:13:43,288 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:13:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-20 23:13:43,288 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-20 23:13:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-20 23:13:43,288 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-20 23:13:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:13:43,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:13:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:13:43,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:13:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-20 23:13:43,289 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-20 23:13:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2021-11-20 23:13:43,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2021-11-20 23:13:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-20 23:13:43,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-20 23:13:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-20 23:13:43,290 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-20 23:13:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2021-11-20 23:13:43,291 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2021-11-20 23:13:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_poll [2021-11-20 23:13:43,291 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_poll [2021-11-20 23:13:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-20 23:13:43,291 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-20 23:13:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:13:43,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:13:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-20 23:13:43,292 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-20 23:13:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-20 23:13:43,292 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-20 23:13:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-20 23:13:43,293 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-20 23:13:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:13:43,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:13:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-20 23:13:43,293 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-20 23:13:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:13:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_stop [2021-11-20 23:13:43,294 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_stop [2021-11-20 23:13:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-20 23:13:43,294 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-20 23:13:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:13:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-20 23:13:43,295 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-20 23:13:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:13:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:13:43,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:13:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_set_filter_mode [2021-11-20 23:13:43,296 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_set_filter_mode [2021-11-20 23:13:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write_1bit [2021-11-20 23:13:43,296 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write_1bit [2021-11-20 23:13:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:13:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~TO~VOID [2021-11-20 23:13:43,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~TO~VOID [2021-11-20 23:13:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-20 23:13:43,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-20 23:13:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:13:43,297 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:13:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-20 23:13:43,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-20 23:13:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-20 23:13:43,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-20 23:13:43,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-20 23:13:43,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-20 23:13:43,298 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-20 23:13:43,298 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-20 23:13:43,298 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-20 23:13:43,299 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-20 23:13:43,299 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read_1bit [2021-11-20 23:13:43,299 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read_1bit [2021-11-20 23:13:43,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:13:43,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:13:43,299 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_reset_prepare [2021-11-20 23:13:43,299 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_reset_prepare [2021-11-20 23:13:43,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:13:43,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-20 23:13:43,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-20 23:13:43,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-20 23:13:43,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-20 23:13:43,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:13:43,301 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_rx_buffer [2021-11-20 23:13:43,301 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_rx_buffer [2021-11-20 23:13:43,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:13:43,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:13:43,301 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 23:13:43,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 23:13:43,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:13:43,302 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:13:43,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:13:43,302 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-20 23:13:43,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-20 23:13:43,302 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 23:13:43,302 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 23:13:43,303 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-20 23:13:43,303 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-20 23:13:43,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-20 23:13:43,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-20 23:13:43,303 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-20 23:13:43,303 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-20 23:13:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:13:43,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:13:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_reuse_skb [2021-11-20 23:13:43,304 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_reuse_skb [2021-11-20 23:13:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_open [2021-11-20 23:13:43,304 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_open [2021-11-20 23:13:43,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:13:43,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:13:43,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:13:43,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:13:43,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:13:43,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:13:43,306 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-20 23:13:43,306 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-20 23:13:43,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_uli526x_board_info [2021-11-20 23:13:43,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_uli526x_board_info [2021-11-20 23:13:43,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-20 23:13:43,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-20 23:13:43,307 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-20 23:13:43,307 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-20 23:13:43,307 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-20 23:13:43,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-20 23:13:43,307 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-20 23:13:43,307 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-20 23:13:43,308 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-20 23:13:43,308 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-20 23:13:43,308 INFO L130 BoogieDeclarations]: Found specification of procedure send_filter_frame [2021-11-20 23:13:43,308 INFO L138 BoogieDeclarations]: Found implementation of procedure send_filter_frame [2021-11-20 23:13:43,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_uli526x_cleanup_module_14_2 [2021-11-20 23:13:43,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_uli526x_cleanup_module_14_2 [2021-11-20 23:13:43,308 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-20 23:13:43,309 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-20 23:13:43,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:13:43,309 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-20 23:13:43,309 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-20 23:13:43,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:13:43,309 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-20 23:13:43,309 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-20 23:13:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:13:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 23:13:43,310 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 23:13:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:13:43,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:13:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_resume [2021-11-20 23:13:43,310 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_resume [2021-11-20 23:13:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-20 23:13:43,311 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-20 23:13:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_interrupt [2021-11-20 23:13:43,311 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_interrupt [2021-11-20 23:13:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~TO~~u16~0 [2021-11-20 23:13:43,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~TO~~u16~0 [2021-11-20 23:13:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_remove_one [2021-11-20 23:13:43,312 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_remove_one [2021-11-20 23:13:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure update_cr6 [2021-11-20 23:13:43,312 INFO L138 BoogieDeclarations]: Found implementation of procedure update_cr6 [2021-11-20 23:13:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:13:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:13:43,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:13:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure srom_clk_write [2021-11-20 23:13:43,313 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_clk_write [2021-11-20 23:13:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_free_rxbuffer [2021-11-20 23:13:43,313 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_free_rxbuffer [2021-11-20 23:13:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:13:43,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:13:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-20 23:13:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-20 23:13:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-20 23:13:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-20 23:13:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_init [2021-11-20 23:13:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_init [2021-11-20 23:13:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:13:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:13:43,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:13:44,167 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:13:44,171 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:13:44,805 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:13:47,329 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:13:47,606 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:13:48,908 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:13:48,908 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:13:48,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:48 BoogieIcfgContainer [2021-11-20 23:13:48,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:13:48,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:13:48,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:13:48,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:13:48,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:13:38" (1/3) ... [2021-11-20 23:13:48,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d0ec71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:48, skipping insertion in model container [2021-11-20 23:13:48,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:42" (2/3) ... [2021-11-20 23:13:48,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d0ec71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:48, skipping insertion in model container [2021-11-20 23:13:48,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:48" (3/3) ... [2021-11-20 23:13:48,925 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-20 23:13:48,931 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:13:48,931 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-20 23:13:49,053 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:13:49,071 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:13:49,074 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 23:13:49,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 1067 states, 596 states have (on average 1.2953020134228188) internal successors, (772), 619 states have internal predecessors, (772), 390 states have call successors, (390), 79 states have call predecessors, (390), 78 states have return successors, (384), 378 states have call predecessors, (384), 384 states have call successors, (384) [2021-11-20 23:13:49,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-20 23:13:49,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:49,167 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:49,168 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:13:49,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:49,174 INFO L85 PathProgramCache]: Analyzing trace with hash 827769766, now seen corresponding path program 1 times [2021-11-20 23:13:49,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:49,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785456105] [2021-11-20 23:13:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:49,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-20 23:13:50,019 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:13:50,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785456105] [2021-11-20 23:13:50,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785456105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:50,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:50,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:13:50,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14531664] [2021-11-20 23:13:50,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:50,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:13:50,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:13:50,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:13:50,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:50,126 INFO L87 Difference]: Start difference. First operand has 1067 states, 596 states have (on average 1.2953020134228188) internal successors, (772), 619 states have internal predecessors, (772), 390 states have call successors, (390), 79 states have call predecessors, (390), 78 states have return successors, (384), 378 states have call predecessors, (384), 384 states have call successors, (384) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 23:13:53,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:53,100 INFO L93 Difference]: Finished difference Result 3082 states and 4527 transitions. [2021-11-20 23:13:53,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:13:53,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2021-11-20 23:13:53,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:53,154 INFO L225 Difference]: With dead ends: 3082 [2021-11-20 23:13:53,154 INFO L226 Difference]: Without dead ends: 2024 [2021-11-20 23:13:53,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:53,180 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 1427 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:53,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1427 Valid, 2918 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 23:13:53,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2021-11-20 23:13:53,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2020. [2021-11-20 23:13:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 1139 states have (on average 1.2853380158033363) internal successors, (1464), 1184 states have internal predecessors, (1464), 726 states have call successors, (726), 153 states have call predecessors, (726), 152 states have return successors, (722), 710 states have call predecessors, (722), 722 states have call successors, (722) [2021-11-20 23:13:53,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2912 transitions. [2021-11-20 23:13:53,524 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2912 transitions. Word has length 111 [2021-11-20 23:13:53,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:53,525 INFO L470 AbstractCegarLoop]: Abstraction has 2020 states and 2912 transitions. [2021-11-20 23:13:53,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 23:13:53,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2912 transitions. [2021-11-20 23:13:53,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-20 23:13:53,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:53,532 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:53,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:13:53,533 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:13:53,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:53,534 INFO L85 PathProgramCache]: Analyzing trace with hash 669329599, now seen corresponding path program 1 times [2021-11-20 23:13:53,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:53,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521792011] [2021-11-20 23:13:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:53,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:53,886 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-20 23:13:53,886 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:13:53,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521792011] [2021-11-20 23:13:53,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521792011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:53,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:53,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:13:53,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813345776] [2021-11-20 23:13:53,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:53,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:13:53,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:13:53,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:13:53,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:53,892 INFO L87 Difference]: Start difference. First operand 2020 states and 2912 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 23:13:56,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:56,411 INFO L93 Difference]: Finished difference Result 5958 states and 8596 transitions. [2021-11-20 23:13:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:13:56,411 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2021-11-20 23:13:56,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:56,451 INFO L225 Difference]: With dead ends: 5958 [2021-11-20 23:13:56,452 INFO L226 Difference]: Without dead ends: 3957 [2021-11-20 23:13:56,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:56,467 INFO L933 BasicCegarLoop]: 1658 mSDtfsCounter, 1470 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:56,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 2914 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:13:56,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2021-11-20 23:13:56,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3927. [2021-11-20 23:13:56,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3927 states, 2228 states have (on average 1.2885996409335727) internal successors, (2871), 2322 states have internal predecessors, (2871), 1397 states have call successors, (1397), 304 states have call predecessors, (1397), 299 states have return successors, (1399), 1356 states have call predecessors, (1399), 1393 states have call successors, (1399) [2021-11-20 23:13:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 5667 transitions. [2021-11-20 23:13:56,807 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 5667 transitions. Word has length 115 [2021-11-20 23:13:56,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:56,808 INFO L470 AbstractCegarLoop]: Abstraction has 3927 states and 5667 transitions. [2021-11-20 23:13:56,809 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 23:13:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 5667 transitions. [2021-11-20 23:13:56,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-20 23:13:56,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:56,813 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:56,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:13:56,813 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:13:56,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:56,814 INFO L85 PathProgramCache]: Analyzing trace with hash -310781110, now seen corresponding path program 1 times [2021-11-20 23:13:56,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:56,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325210456] [2021-11-20 23:13:56,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:56,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-20 23:13:56,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:13:56,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325210456] [2021-11-20 23:13:56,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325210456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:56,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:56,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:13:56,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691978032] [2021-11-20 23:13:56,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:56,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:13:56,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:13:56,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:13:56,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:56,991 INFO L87 Difference]: Start difference. First operand 3927 states and 5667 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 23:13:59,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:59,645 INFO L93 Difference]: Finished difference Result 11395 states and 16413 transitions. [2021-11-20 23:13:59,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:13:59,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2021-11-20 23:13:59,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:59,741 INFO L225 Difference]: With dead ends: 11395 [2021-11-20 23:13:59,741 INFO L226 Difference]: Without dead ends: 7487 [2021-11-20 23:13:59,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:59,782 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 1380 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:59,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 2955 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:13:59,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7487 states. [2021-11-20 23:14:00,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7487 to 7453. [2021-11-20 23:14:00,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7453 states, 4238 states have (on average 1.2890514393581878) internal successors, (5463), 4424 states have internal predecessors, (5463), 2627 states have call successors, (2627), 598 states have call predecessors, (2627), 585 states have return successors, (2637), 2538 states have call predecessors, (2637), 2623 states have call successors, (2637) [2021-11-20 23:14:00,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7453 states to 7453 states and 10727 transitions. [2021-11-20 23:14:00,599 INFO L78 Accepts]: Start accepts. Automaton has 7453 states and 10727 transitions. Word has length 115 [2021-11-20 23:14:00,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:00,600 INFO L470 AbstractCegarLoop]: Abstraction has 7453 states and 10727 transitions. [2021-11-20 23:14:00,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 23:14:00,601 INFO L276 IsEmpty]: Start isEmpty. Operand 7453 states and 10727 transitions. [2021-11-20 23:14:00,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-20 23:14:00,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:00,604 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:00,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:14:00,605 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:14:00,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:00,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1802176668, now seen corresponding path program 1 times [2021-11-20 23:14:00,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:00,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383284982] [2021-11-20 23:14:00,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:00,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-20 23:14:00,916 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:00,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383284982] [2021-11-20 23:14:00,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383284982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:00,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:00,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:14:00,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88016169] [2021-11-20 23:14:00,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:00,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:14:00,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:00,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:14:00,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:14:00,922 INFO L87 Difference]: Start difference. First operand 7453 states and 10727 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 23:14:06,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:06,703 INFO L93 Difference]: Finished difference Result 16965 states and 24267 transitions. [2021-11-20 23:14:06,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:14:06,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 118 [2021-11-20 23:14:06,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:06,791 INFO L225 Difference]: With dead ends: 16965 [2021-11-20 23:14:06,791 INFO L226 Difference]: Without dead ends: 9531 [2021-11-20 23:14:06,942 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 [2021-11-20 23:14:06,947 INFO L933 BasicCegarLoop]: 1878 mSDtfsCounter, 2658 mSDsluCounter, 3485 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 4689 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:06,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 4689 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-20 23:14:06,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9531 states. [2021-11-20 23:14:07,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9531 to 9459. [2021-11-20 23:14:07,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9459 states, 5567 states have (on average 1.2927968385126638) internal successors, (7197), 5795 states have internal predecessors, (7197), 3090 states have call successors, (3090), 820 states have call predecessors, (3090), 799 states have return successors, (3093), 2963 states have call predecessors, (3093), 3086 states have call successors, (3093) [2021-11-20 23:14:07,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9459 states to 9459 states and 13380 transitions. [2021-11-20 23:14:07,517 INFO L78 Accepts]: Start accepts. Automaton has 9459 states and 13380 transitions. Word has length 118 [2021-11-20 23:14:07,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:07,518 INFO L470 AbstractCegarLoop]: Abstraction has 9459 states and 13380 transitions. [2021-11-20 23:14:07,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 23:14:07,522 INFO L276 IsEmpty]: Start isEmpty. Operand 9459 states and 13380 transitions. [2021-11-20 23:14:07,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-20 23:14:07,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:07,527 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:07,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:14:07,528 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:14:07,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:07,530 INFO L85 PathProgramCache]: Analyzing trace with hash 478900414, now seen corresponding path program 1 times [2021-11-20 23:14:07,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:07,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791611334] [2021-11-20 23:14:07,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:07,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-20 23:14:07,668 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:07,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791611334] [2021-11-20 23:14:07,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791611334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:07,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:07,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:14:07,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002659568] [2021-11-20 23:14:07,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:07,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:07,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:07,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:07,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:07,670 INFO L87 Difference]: Start difference. First operand 9459 states and 13380 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (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) [2021-11-20 23:14:10,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:10,011 INFO L93 Difference]: Finished difference Result 24861 states and 35112 transitions. [2021-11-20 23:14:10,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:10,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (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 121 [2021-11-20 23:14:10,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:10,128 INFO L225 Difference]: With dead ends: 24861 [2021-11-20 23:14:10,128 INFO L226 Difference]: Without dead ends: 15421 [2021-11-20 23:14:10,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:10,296 INFO L933 BasicCegarLoop]: 1631 mSDtfsCounter, 1337 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 2876 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:10,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1337 Valid, 2876 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 23:14:10,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15421 states. [2021-11-20 23:14:11,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15421 to 15389. [2021-11-20 23:14:11,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15389 states, 8959 states have (on average 1.2782676638017636) internal successors, (11452), 9331 states have internal predecessors, (11452), 5093 states have call successors, (5093), 1377 states have call predecessors, (5093), 1334 states have return successors, (5104), 4859 states have call predecessors, (5104), 5089 states have call successors, (5104) [2021-11-20 23:14:11,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15389 states to 15389 states and 21649 transitions. [2021-11-20 23:14:11,216 INFO L78 Accepts]: Start accepts. Automaton has 15389 states and 21649 transitions. Word has length 121 [2021-11-20 23:14:11,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:11,220 INFO L470 AbstractCegarLoop]: Abstraction has 15389 states and 21649 transitions. [2021-11-20 23:14:11,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (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) [2021-11-20 23:14:11,220 INFO L276 IsEmpty]: Start isEmpty. Operand 15389 states and 21649 transitions. [2021-11-20 23:14:11,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-20 23:14:11,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:11,224 INFO L514 BasicCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:11,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:14:11,224 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)] === [2021-11-20 23:14:11,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:11,225 INFO L85 PathProgramCache]: Analyzing trace with hash 755063652, now seen corresponding path program 1 times [2021-11-20 23:14:11,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:11,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769728678] [2021-11-20 23:14:11,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:11,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2021-11-20 23:14:11,500 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:11,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769728678] [2021-11-20 23:14:11,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769728678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:11,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:11,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:14:11,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989050437] [2021-11-20 23:14:11,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:11,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:11,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:11,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:11,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:11,503 INFO L87 Difference]: Start difference. First operand 15389 states and 21649 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-20 23:14:14,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:14,247 INFO L93 Difference]: Finished difference Result 45249 states and 63699 transitions. [2021-11-20 23:14:14,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:14,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2021-11-20 23:14:14,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:14,439 INFO L225 Difference]: With dead ends: 45249 [2021-11-20 23:14:14,440 INFO L226 Difference]: Without dead ends: 29879 [2021-11-20 23:14:14,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:14,513 INFO L933 BasicCegarLoop]: 1737 mSDtfsCounter, 1477 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:14,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1477 Valid, 3023 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 23:14:14,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29879 states. [2021-11-20 23:14:16,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29879 to 29805. [2021-11-20 23:14:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29805 states, 17331 states have (on average 1.2785759621487507) internal successors, (22159), 18097 states have internal predecessors, (22159), 9880 states have call successors, (9880), 2676 states have call predecessors, (9880), 2591 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2021-11-20 23:14:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29805 states to 29805 states and 41945 transitions. [2021-11-20 23:14:16,552 INFO L78 Accepts]: Start accepts. Automaton has 29805 states and 41945 transitions. Word has length 133 [2021-11-20 23:14:16,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:16,553 INFO L470 AbstractCegarLoop]: Abstraction has 29805 states and 41945 transitions. [2021-11-20 23:14:16,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-20 23:14:16,554 INFO L276 IsEmpty]: Start isEmpty. Operand 29805 states and 41945 transitions. [2021-11-20 23:14:16,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-20 23:14:16,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:16,558 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:16,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:14:16,558 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:14:16,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:16,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1478331561, now seen corresponding path program 1 times [2021-11-20 23:14:16,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:16,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122791676] [2021-11-20 23:14:16,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:16,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-20 23:14:16,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:16,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122791676] [2021-11-20 23:14:16,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122791676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:16,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:16,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:14:16,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898356678] [2021-11-20 23:14:16,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:16,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:16,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:16,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:16,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:16,747 INFO L87 Difference]: Start difference. First operand 29805 states and 41945 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-20 23:14:19,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:19,216 INFO L93 Difference]: Finished difference Result 59497 states and 83762 transitions. [2021-11-20 23:14:19,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:19,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2021-11-20 23:14:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:19,419 INFO L225 Difference]: With dead ends: 59497 [2021-11-20 23:14:19,419 INFO L226 Difference]: Without dead ends: 29757 [2021-11-20 23:14:19,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:19,515 INFO L933 BasicCegarLoop]: 1280 mSDtfsCounter, 1485 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:19,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 1280 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 23:14:19,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29757 states. [2021-11-20 23:14:21,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29757 to 29757. [2021-11-20 23:14:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29757 states, 17283 states have (on average 1.2682404675114274) internal successors, (21919), 18049 states have internal predecessors, (21919), 9880 states have call successors, (9880), 2676 states have call predecessors, (9880), 2591 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2021-11-20 23:14:21,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29757 states to 29757 states and 41705 transitions. [2021-11-20 23:14:21,359 INFO L78 Accepts]: Start accepts. Automaton has 29757 states and 41705 transitions. Word has length 156 [2021-11-20 23:14:21,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:21,360 INFO L470 AbstractCegarLoop]: Abstraction has 29757 states and 41705 transitions. [2021-11-20 23:14:21,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-20 23:14:21,361 INFO L276 IsEmpty]: Start isEmpty. Operand 29757 states and 41705 transitions. [2021-11-20 23:14:21,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-20 23:14:21,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:21,364 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:21,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:14:21,365 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)] === [2021-11-20 23:14:21,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:21,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1624308643, now seen corresponding path program 1 times [2021-11-20 23:14:21,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:21,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709834597] [2021-11-20 23:14:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:21,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-20 23:14:21,819 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:21,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709834597] [2021-11-20 23:14:21,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709834597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:21,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:21,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:14:21,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518072618] [2021-11-20 23:14:21,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:21,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:14:21,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:21,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:14:21,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:14:21,822 INFO L87 Difference]: Start difference. First operand 29757 states and 41705 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) [2021-11-20 23:14:24,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:24,618 INFO L93 Difference]: Finished difference Result 29763 states and 41710 transitions. [2021-11-20 23:14:24,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:14:24,619 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 158 [2021-11-20 23:14:24,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:24,778 INFO L225 Difference]: With dead ends: 29763 [2021-11-20 23:14:24,778 INFO L226 Difference]: Without dead ends: 29761 [2021-11-20 23:14:24,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:14:24,793 INFO L933 BasicCegarLoop]: 1280 mSDtfsCounter, 1463 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 3826 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:24,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1475 Valid, 3826 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 23:14:24,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29761 states. [2021-11-20 23:14:26,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29761 to 29761. [2021-11-20 23:14:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29761 states, 17286 states have (on average 1.2681939141501792) internal successors, (21922), 18052 states have internal predecessors, (21922), 9880 states have call successors, (9880), 2677 states have call predecessors, (9880), 2592 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2021-11-20 23:14:26,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29761 states to 29761 states and 41708 transitions. [2021-11-20 23:14:26,370 INFO L78 Accepts]: Start accepts. Automaton has 29761 states and 41708 transitions. Word has length 158 [2021-11-20 23:14:26,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:26,371 INFO L470 AbstractCegarLoop]: Abstraction has 29761 states and 41708 transitions. [2021-11-20 23:14:26,371 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) [2021-11-20 23:14:26,371 INFO L276 IsEmpty]: Start isEmpty. Operand 29761 states and 41708 transitions. [2021-11-20 23:14:26,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-20 23:14:26,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:26,374 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:26,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:14:26,375 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:14:26,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:26,376 INFO L85 PathProgramCache]: Analyzing trace with hash -501763627, now seen corresponding path program 1 times [2021-11-20 23:14:26,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:26,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673788559] [2021-11-20 23:14:26,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:26,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-11-20 23:14:26,543 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:26,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673788559] [2021-11-20 23:14:26,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673788559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:26,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:26,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:14:26,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773370229] [2021-11-20 23:14:26,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:26,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:14:26,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:26,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:14:26,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:14:26,546 INFO L87 Difference]: Start difference. First operand 29761 states and 41708 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 23:14:29,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:29,404 INFO L93 Difference]: Finished difference Result 29767 states and 41713 transitions. [2021-11-20 23:14:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:14:29,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 [2021-11-20 23:14:29,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:29,535 INFO L225 Difference]: With dead ends: 29767 [2021-11-20 23:14:29,535 INFO L226 Difference]: Without dead ends: 29765 [2021-11-20 23:14:29,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:14:29,547 INFO L933 BasicCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:29,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1468 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 23:14:29,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29765 states. [2021-11-20 23:14:30,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29765 to 29765. [2021-11-20 23:14:30,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29765 states, 17289 states have (on average 1.2681473769448783) internal successors, (21925), 18055 states have internal predecessors, (21925), 9880 states have call successors, (9880), 2678 states have call predecessors, (9880), 2593 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2021-11-20 23:14:30,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29765 states to 29765 states and 41711 transitions. [2021-11-20 23:14:30,920 INFO L78 Accepts]: Start accepts. Automaton has 29765 states and 41711 transitions. Word has length 166 [2021-11-20 23:14:30,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:30,921 INFO L470 AbstractCegarLoop]: Abstraction has 29765 states and 41711 transitions. [2021-11-20 23:14:30,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 23:14:30,921 INFO L276 IsEmpty]: Start isEmpty. Operand 29765 states and 41711 transitions. [2021-11-20 23:14:30,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-20 23:14:30,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:30,926 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 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] [2021-11-20 23:14:30,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:14:30,926 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:14:30,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:30,927 INFO L85 PathProgramCache]: Analyzing trace with hash -388277055, now seen corresponding path program 1 times [2021-11-20 23:14:30,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:30,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428741053] [2021-11-20 23:14:30,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:30,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:31,099 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2021-11-20 23:14:31,099 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:31,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428741053] [2021-11-20 23:14:31,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428741053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:31,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:31,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:14:31,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595876087] [2021-11-20 23:14:31,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:31,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:14:31,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:31,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:14:31,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:14:31,102 INFO L87 Difference]: Start difference. First operand 29765 states and 41711 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-20 23:14:34,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:34,644 INFO L93 Difference]: Finished difference Result 29771 states and 41716 transitions. [2021-11-20 23:14:34,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:14:34,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 [2021-11-20 23:14:34,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:34,762 INFO L225 Difference]: With dead ends: 29771 [2021-11-20 23:14:34,762 INFO L226 Difference]: Without dead ends: 29769 [2021-11-20 23:14:34,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:14:34,777 INFO L933 BasicCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:34,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1467 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:14:34,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29769 states. [2021-11-20 23:14:36,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29769 to 29769. [2021-11-20 23:14:36,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29769 states, 17292 states have (on average 1.2681008558871154) internal successors, (21928), 18058 states have internal predecessors, (21928), 9880 states have call successors, (9880), 2679 states have call predecessors, (9880), 2594 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2021-11-20 23:14:36,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29769 states to 29769 states and 41714 transitions. [2021-11-20 23:14:36,255 INFO L78 Accepts]: Start accepts. Automaton has 29769 states and 41714 transitions. Word has length 171 [2021-11-20 23:14:36,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:36,255 INFO L470 AbstractCegarLoop]: Abstraction has 29769 states and 41714 transitions. [2021-11-20 23:14:36,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-20 23:14:36,255 INFO L276 IsEmpty]: Start isEmpty. Operand 29769 states and 41714 transitions. [2021-11-20 23:14:36,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-20 23:14:36,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:36,262 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:36,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:14:36,263 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)] === [2021-11-20 23:14:36,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:36,264 INFO L85 PathProgramCache]: Analyzing trace with hash 88847854, now seen corresponding path program 1 times [2021-11-20 23:14:36,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:36,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089554834] [2021-11-20 23:14:36,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:36,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:36,483 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2021-11-20 23:14:36,483 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:36,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089554834] [2021-11-20 23:14:36,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089554834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:36,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:36,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:14:36,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563376621] [2021-11-20 23:14:36,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:36,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:14:36,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:36,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:14:36,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:14:36,487 INFO L87 Difference]: Start difference. First operand 29769 states and 41714 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 23:14:39,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:39,610 INFO L93 Difference]: Finished difference Result 29775 states and 41719 transitions. [2021-11-20 23:14:39,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:14:39,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 177 [2021-11-20 23:14:39,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:39,690 INFO L225 Difference]: With dead ends: 29775 [2021-11-20 23:14:39,690 INFO L226 Difference]: Without dead ends: 29773 [2021-11-20 23:14:39,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:14:39,703 INFO L933 BasicCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:39,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 23:14:39,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29773 states. [2021-11-20 23:14:40,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29773 to 29773. [2021-11-20 23:14:40,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29773 states, 17295 states have (on average 1.268054350968488) internal successors, (21931), 18061 states have internal predecessors, (21931), 9880 states have call successors, (9880), 2680 states have call predecessors, (9880), 2595 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2021-11-20 23:14:41,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29773 states to 29773 states and 41717 transitions. [2021-11-20 23:14:41,098 INFO L78 Accepts]: Start accepts. Automaton has 29773 states and 41717 transitions. Word has length 177 [2021-11-20 23:14:41,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:41,099 INFO L470 AbstractCegarLoop]: Abstraction has 29773 states and 41717 transitions. [2021-11-20 23:14:41,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 23:14:41,099 INFO L276 IsEmpty]: Start isEmpty. Operand 29773 states and 41717 transitions. [2021-11-20 23:14:41,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-20 23:14:41,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:41,104 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:41,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:14:41,105 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:14:41,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:41,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1536348216, now seen corresponding path program 1 times [2021-11-20 23:14:41,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:41,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357224315] [2021-11-20 23:14:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:41,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2021-11-20 23:14:41,271 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:41,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357224315] [2021-11-20 23:14:41,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357224315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:41,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:41,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:14:41,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467919471] [2021-11-20 23:14:41,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:41,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:14:41,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:41,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:14:41,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:14:41,274 INFO L87 Difference]: Start difference. First operand 29773 states and 41717 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-20 23:14:44,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:44,299 INFO L93 Difference]: Finished difference Result 29779 states and 41722 transitions. [2021-11-20 23:14:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:14:44,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 182 [2021-11-20 23:14:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:44,422 INFO L225 Difference]: With dead ends: 29779 [2021-11-20 23:14:44,423 INFO L226 Difference]: Without dead ends: 29777 [2021-11-20 23:14:44,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:14:44,440 INFO L933 BasicCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:44,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1465 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 23:14:44,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29777 states. [2021-11-20 23:14:45,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29777 to 29777. [2021-11-20 23:14:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29777 states, 17298 states have (on average 1.268007862180599) internal successors, (21934), 18064 states have internal predecessors, (21934), 9880 states have call successors, (9880), 2681 states have call predecessors, (9880), 2596 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2021-11-20 23:14:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29777 states to 29777 states and 41720 transitions. [2021-11-20 23:14:45,992 INFO L78 Accepts]: Start accepts. Automaton has 29777 states and 41720 transitions. Word has length 182 [2021-11-20 23:14:45,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:45,993 INFO L470 AbstractCegarLoop]: Abstraction has 29777 states and 41720 transitions. [2021-11-20 23:14:45,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-20 23:14:45,993 INFO L276 IsEmpty]: Start isEmpty. Operand 29777 states and 41720 transitions. [2021-11-20 23:14:45,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-20 23:14:45,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:45,999 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:45,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 23:14:45,999 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:14:46,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:46,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1080878574, now seen corresponding path program 1 times [2021-11-20 23:14:46,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:46,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795844145] [2021-11-20 23:14:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:46,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2021-11-20 23:14:46,183 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:46,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795844145] [2021-11-20 23:14:46,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795844145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:46,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:46,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:14:46,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874613833] [2021-11-20 23:14:46,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:46,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:14:46,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:46,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:14:46,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:14:46,186 INFO L87 Difference]: Start difference. First operand 29777 states and 41720 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 23:14:50,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:50,055 INFO L93 Difference]: Finished difference Result 29783 states and 41725 transitions. [2021-11-20 23:14:50,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:14:50,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 187 [2021-11-20 23:14:50,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:50,173 INFO L225 Difference]: With dead ends: 29783 [2021-11-20 23:14:50,173 INFO L226 Difference]: Without dead ends: 29781 [2021-11-20 23:14:50,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:14:50,187 INFO L933 BasicCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:50,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 23:14:50,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29781 states. [2021-11-20 23:14:51,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29781 to 29781. [2021-11-20 23:14:51,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29781 states, 17301 states have (on average 1.267961389515057) internal successors, (21937), 18067 states have internal predecessors, (21937), 9880 states have call successors, (9880), 2682 states have call predecessors, (9880), 2597 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2021-11-20 23:14:51,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29781 states to 29781 states and 41723 transitions. [2021-11-20 23:14:51,866 INFO L78 Accepts]: Start accepts. Automaton has 29781 states and 41723 transitions. Word has length 187 [2021-11-20 23:14:51,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:51,867 INFO L470 AbstractCegarLoop]: Abstraction has 29781 states and 41723 transitions. [2021-11-20 23:14:51,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 23:14:51,867 INFO L276 IsEmpty]: Start isEmpty. Operand 29781 states and 41723 transitions. [2021-11-20 23:14:51,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-20 23:14:51,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:51,874 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 7, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:51,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 23:14:51,875 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:14:51,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:51,875 INFO L85 PathProgramCache]: Analyzing trace with hash -296544959, now seen corresponding path program 1 times [2021-11-20 23:14:51,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:51,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311638706] [2021-11-20 23:14:51,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:51,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2021-11-20 23:14:52,055 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:52,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311638706] [2021-11-20 23:14:52,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311638706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:52,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:52,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:14:52,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835511251] [2021-11-20 23:14:52,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:52,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:14:52,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:52,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:14:52,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:14:52,057 INFO L87 Difference]: Start difference. First operand 29781 states and 41723 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-20 23:14:54,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:54,857 INFO L93 Difference]: Finished difference Result 29787 states and 41728 transitions. [2021-11-20 23:14:54,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:14:54,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 191 [2021-11-20 23:14:54,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:54,958 INFO L225 Difference]: With dead ends: 29787 [2021-11-20 23:14:54,958 INFO L226 Difference]: Without dead ends: 29785 [2021-11-20 23:14:54,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:14:54,974 INFO L933 BasicCegarLoop]: 1283 mSDtfsCounter, 1457 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:54,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1463 Valid, 3829 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 23:14:54,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29785 states. [2021-11-20 23:14:56,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29785 to 29785. [2021-11-20 23:14:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29785 states, 17304 states have (on average 1.2679149329634767) internal successors, (21940), 18070 states have internal predecessors, (21940), 9880 states have call successors, (9880), 2683 states have call predecessors, (9880), 2598 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2021-11-20 23:14:56,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29785 states to 29785 states and 41726 transitions. [2021-11-20 23:14:56,737 INFO L78 Accepts]: Start accepts. Automaton has 29785 states and 41726 transitions. Word has length 191 [2021-11-20 23:14:56,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:56,737 INFO L470 AbstractCegarLoop]: Abstraction has 29785 states and 41726 transitions. [2021-11-20 23:14:56,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-20 23:14:56,738 INFO L276 IsEmpty]: Start isEmpty. Operand 29785 states and 41726 transitions. [2021-11-20 23:14:56,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-20 23:14:56,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:56,745 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:56,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 23:14:56,746 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:14:56,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:56,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1511922381, now seen corresponding path program 1 times [2021-11-20 23:14:56,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:56,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130095898] [2021-11-20 23:14:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:56,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-11-20 23:14:57,090 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:57,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130095898] [2021-11-20 23:14:57,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130095898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:57,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:57,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:14:57,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637448279] [2021-11-20 23:14:57,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:57,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:14:57,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:57,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:14:57,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:14:57,093 INFO L87 Difference]: Start difference. First operand 29785 states and 41726 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 23:15:00,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:00,707 INFO L93 Difference]: Finished difference Result 32987 states and 45541 transitions. [2021-11-20 23:15:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:15:00,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 193 [2021-11-20 23:15:00,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:00,840 INFO L225 Difference]: With dead ends: 32987 [2021-11-20 23:15:00,840 INFO L226 Difference]: Without dead ends: 32985 [2021-11-20 23:15:00,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:15:00,860 INFO L933 BasicCegarLoop]: 1423 mSDtfsCounter, 1183 mSDsluCounter, 3953 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 4785 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:00,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1188 Valid, 4785 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 23:15:00,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32985 states. [2021-11-20 23:15:02,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32985 to 32985. [2021-11-20 23:15:02,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32985 states, 18997 states have (on average 1.2575143443701637) internal successors, (23889), 19799 states have internal predecessors, (23889), 10812 states have call successors, (10812), 3258 states have call predecessors, (10812), 3173 states have return successors, (10838), 10313 states have call predecessors, (10838), 10808 states have call successors, (10838) [2021-11-20 23:15:02,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32985 states to 32985 states and 45539 transitions. [2021-11-20 23:15:02,623 INFO L78 Accepts]: Start accepts. Automaton has 32985 states and 45539 transitions. Word has length 193 [2021-11-20 23:15:02,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:02,624 INFO L470 AbstractCegarLoop]: Abstraction has 32985 states and 45539 transitions. [2021-11-20 23:15:02,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 23:15:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 32985 states and 45539 transitions. [2021-11-20 23:15:02,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-20 23:15:02,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:02,631 INFO L514 BasicCegarLoop]: trace histogram [15, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1] [2021-11-20 23:15:02,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 23:15:02,631 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:15:02,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:02,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1883418044, now seen corresponding path program 1 times [2021-11-20 23:15:02,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:02,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418104681] [2021-11-20 23:15:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:02,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2021-11-20 23:15:02,753 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:02,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418104681] [2021-11-20 23:15:02,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418104681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:02,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:02,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:15:02,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282445391] [2021-11-20 23:15:02,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:02,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:15:02,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:02,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:15:02,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:15:02,755 INFO L87 Difference]: Start difference. First operand 32985 states and 45539 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-20 23:15:06,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:06,753 INFO L93 Difference]: Finished difference Result 73529 states and 101491 transitions. [2021-11-20 23:15:06,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:15:06,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 193 [2021-11-20 23:15:06,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:06,957 INFO L225 Difference]: With dead ends: 73529 [2021-11-20 23:15:06,957 INFO L226 Difference]: Without dead ends: 40609 [2021-11-20 23:15:07,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:15:07,262 INFO L933 BasicCegarLoop]: 1888 mSDtfsCounter, 979 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:07,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 3133 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 23:15:07,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40609 states.