./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936f82a0-6ec0-4b3f-8201-c9633d608093/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936f82a0-6ec0-4b3f-8201-c9633d608093/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936f82a0-6ec0-4b3f-8201-c9633d608093/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936f82a0-6ec0-4b3f-8201-c9633d608093/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936f82a0-6ec0-4b3f-8201-c9633d608093/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936f82a0-6ec0-4b3f-8201-c9633d608093/bin/utaipan-eEHZpOm5b7 --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 2bf48d35d7133b2e8327bc0634357c212875c286543fcf18078150bbf7eff020 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:20:13,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:20:13,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:20:13,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:20:13,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:20:13,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:20:13,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:20:13,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:20:13,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:20:13,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:20:13,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:20:13,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:20:13,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:20:13,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:20:13,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:20:13,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:20:13,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:20:13,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:20:13,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:20:13,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:20:13,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:20:13,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:20:13,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:20:13,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:20:13,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:20:13,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:20:13,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:20:13,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:20:13,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:20:13,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:20:13,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:20:13,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:20:13,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:20:13,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:20:13,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:20:13,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:20:13,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:20:13,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:20:13,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:20:13,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:20:13,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:20:13,376 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936f82a0-6ec0-4b3f-8201-c9633d608093/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:20:13,419 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:20:13,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:20:13,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:20:13,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:20:13,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:20:13,422 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:20:13,422 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:20:13,422 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:20:13,422 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:20:13,423 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:20:13,424 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:20:13,424 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:20:13,424 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:20:13,424 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:20:13,425 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:20:13,425 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:20:13,425 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:20:13,426 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:20:13,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:20:13,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:20:13,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:20:13,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:20:13,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:20:13,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:20:13,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:20:13,428 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:20:13,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:20:13,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:20:13,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:20:13,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:20:13,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:20:13,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:20:13,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:20:13,431 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:20:13,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:20:13,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:20:13,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:20:13,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:20:13,433 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_936f82a0-6ec0-4b3f-8201-c9633d608093/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936f82a0-6ec0-4b3f-8201-c9633d608093/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf48d35d7133b2e8327bc0634357c212875c286543fcf18078150bbf7eff020 [2021-11-25 19:20:13,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:20:13,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:20:13,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:20:13,765 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:20:13,767 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:20:13,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936f82a0-6ec0-4b3f-8201-c9633d608093/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i [2021-11-25 19:20:13,867 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936f82a0-6ec0-4b3f-8201-c9633d608093/bin/utaipan-eEHZpOm5b7/data/370c6a960/cd6b0db421424f329dd5855d2e07ea10/FLAGd3d4e157c [2021-11-25 19:20:14,991 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:20:14,992 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936f82a0-6ec0-4b3f-8201-c9633d608093/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i [2021-11-25 19:20:15,059 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936f82a0-6ec0-4b3f-8201-c9633d608093/bin/utaipan-eEHZpOm5b7/data/370c6a960/cd6b0db421424f329dd5855d2e07ea10/FLAGd3d4e157c [2021-11-25 19:20:15,265 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936f82a0-6ec0-4b3f-8201-c9633d608093/bin/utaipan-eEHZpOm5b7/data/370c6a960/cd6b0db421424f329dd5855d2e07ea10 [2021-11-25 19:20:15,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:20:15,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:20:15,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:20:15,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:20:15,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:20:15,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:20:15" (1/1) ... [2021-11-25 19:20:15,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:15, skipping insertion in model container [2021-11-25 19:20:15,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:20:15" (1/1) ... [2021-11-25 19:20:15,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:20:15,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:20:20,175 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_936f82a0-6ec0-4b3f-8201-c9633d608093/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[469707,469720] [2021-11-25 19:20:20,178 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_936f82a0-6ec0-4b3f-8201-c9633d608093/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[469873,469886] [2021-11-25 19:20:20,178 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_936f82a0-6ec0-4b3f-8201-c9633d608093/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[470037,470050] [2021-11-25 19:20:20,179 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_936f82a0-6ec0-4b3f-8201-c9633d608093/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[470202,470215] [2021-11-25 19:20:20,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:20:20,303 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:20:20,965 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_936f82a0-6ec0-4b3f-8201-c9633d608093/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[469707,469720] [2021-11-25 19:20:20,965 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_936f82a0-6ec0-4b3f-8201-c9633d608093/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[469873,469886] [2021-11-25 19:20:20,966 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_936f82a0-6ec0-4b3f-8201-c9633d608093/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[470037,470050] [2021-11-25 19:20:20,966 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_936f82a0-6ec0-4b3f-8201-c9633d608093/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[470202,470215] [2021-11-25 19:20:20,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:20:21,286 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:20:21,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:21 WrapperNode [2021-11-25 19:20:21,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:20:21,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:20:21,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:20:21,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:20:21,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:21" (1/1) ... [2021-11-25 19:20:21,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:21" (1/1) ... [2021-11-25 19:20:21,922 INFO L137 Inliner]: procedures = 538, calls = 6232, calls flagged for inlining = 274, calls inlined = 248, statements flattened = 8897 [2021-11-25 19:20:21,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:20:21,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:20:21,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:20:21,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:20:21,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:21" (1/1) ... [2021-11-25 19:20:21,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:21" (1/1) ... [2021-11-25 19:20:21,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:21" (1/1) ... [2021-11-25 19:20:21,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:21" (1/1) ... [2021-11-25 19:20:22,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:21" (1/1) ... [2021-11-25 19:20:22,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:21" (1/1) ... [2021-11-25 19:20:22,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:21" (1/1) ... [2021-11-25 19:20:22,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:20:22,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:20:22,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:20:22,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:20:22,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:21" (1/1) ... [2021-11-25 19:20:22,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:20:22,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936f82a0-6ec0-4b3f-8201-c9633d608093/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:20:22,623 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936f82a0-6ec0-4b3f-8201-c9633d608093/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:20:22,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936f82a0-6ec0-4b3f-8201-c9633d608093/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:20:22,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_lock_of_islpci_acl [2021-11-25 19:20:22,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_lock_of_islpci_acl [2021-11-25 19:20:22,738 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2021-11-25 19:20:22,738 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2021-11-25 19:20:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_eth_tx_timeout [2021-11-25 19:20:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_eth_tx_timeout [2021-11-25 19:20:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-25 19:20:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 19:20:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 19:20:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 19:20:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 19:20:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_trigger [2021-11-25 19:20:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_trigger [2021-11-25 19:20:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 19:20:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 19:20:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:20:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:20:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_mib_mode_helper [2021-11-25 19:20:22,741 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_mib_mode_helper [2021-11-25 19:20:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 19:20:22,741 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 19:20:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 19:20:22,741 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 19:20:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 19:20:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 19:20:22,742 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set_request [2021-11-25 19:20:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set_request [2021-11-25 19:20:22,742 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2021-11-25 19:20:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2021-11-25 19:20:22,742 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 19:20:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_get_state [2021-11-25 19:20:22,743 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_get_state [2021-11-25 19:20:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 19:20:22,743 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 19:20:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 19:20:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 19:20:22,744 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 19:20:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 19:20:22,744 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 19:20:22,744 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 19:20:22,744 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_release [2021-11-25 19:20:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_release [2021-11-25 19:20:22,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 19:20:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 19:20:22,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 19:20:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 19:20:22,746 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 19:20:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 19:20:22,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_try [2021-11-25 19:20:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_try [2021-11-25 19:20:22,746 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 19:20:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 19:20:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:20:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_wpa_lock_of_NOT_ARG_SIGN [2021-11-25 19:20:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_wpa_lock_of_NOT_ARG_SIGN [2021-11-25 19:20:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure send_simple_event [2021-11-25 19:20:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure send_simple_event [2021-11-25 19:20:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 19:20:22,748 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 19:20:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 19:20:22,748 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 19:20:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure send_formatted_event [2021-11-25 19:20:22,748 INFO L138 BoogieDeclarations]: Found implementation of procedure send_formatted_event [2021-11-25 19:20:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set [2021-11-25 19:20:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set [2021-11-25 19:20:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 19:20:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 19:20:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 19:20:22,750 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 19:20:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:20:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_reset [2021-11-25 19:20:22,750 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_reset [2021-11-25 19:20:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 19:20:22,750 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 19:20:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-25 19:20:22,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-25 19:20:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2021-11-25 19:20:22,751 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2021-11-25 19:20:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:20:22,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 19:20:22,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 19:20:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:20:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 19:20:22,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 19:20:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:20:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:20:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 19:20:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 19:20:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 19:20:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 19:20:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_open [2021-11-25 19:20:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_open [2021-11-25 19:20:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_resume [2021-11-25 19:20:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_resume [2021-11-25 19:20:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 19:20:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 19:20:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:20:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 19:20:22,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 19:20:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 19:20:22,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 19:20:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2021-11-25 19:20:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2021-11-25 19:20:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-25 19:20:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-25 19:20:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:20:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 19:20:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 19:20:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 19:20:22,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 19:20:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:20:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 19:20:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:20:22,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:20:22,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_stats_lock_of_NOT_ARG_SIGN [2021-11-25 19:20:22,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_stats_lock_of_NOT_ARG_SIGN [2021-11-25 19:20:22,758 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-25 19:20:22,758 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-25 19:20:22,759 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 19:20:22,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 19:20:22,759 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 19:20:22,759 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 19:20:22,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_wpa_lock_of_NOT_ARG_SIGN [2021-11-25 19:20:22,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_wpa_lock_of_NOT_ARG_SIGN [2021-11-25 19:20:22,760 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 19:20:22,760 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 19:20:22,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 19:20:22,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 19:20:22,760 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2021-11-25 19:20:22,760 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2021-11-25 19:20:22,761 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-25 19:20:22,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-25 19:20:22,761 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 19:20:22,761 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 19:20:22,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_prism54_module_exit_12_2 [2021-11-25 19:20:22,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_prism54_module_exit_12_2 [2021-11-25 19:20:22,762 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-11-25 19:20:22,762 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-11-25 19:20:22,762 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-25 19:20:22,762 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-25 19:20:22,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:20:22,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:20:22,762 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2021-11-25 19:20:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2021-11-25 19:20:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-25 19:20:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-25 19:20:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-25 19:20:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-25 19:20:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_clear_mac [2021-11-25 19:20:22,764 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_clear_mac [2021-11-25 19:20:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_wpa_bss_ie_get [2021-11-25 19:20:22,764 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_wpa_bss_ie_get [2021-11-25 19:20:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:20:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:20:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:20:22,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:20:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 19:20:22,765 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 19:20:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure handle_request [2021-11-25 19:20:22,765 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_request [2021-11-25 19:20:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_bring_down [2021-11-25 19:20:22,766 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_bring_down [2021-11-25 19:20:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_stats_lock_of_NOT_ARG_SIGN [2021-11-25 19:20:22,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_stats_lock_of_NOT_ARG_SIGN [2021-11-25 19:20:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 19:20:22,766 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 19:20:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:20:22,767 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:20:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 19:20:22,767 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 19:20:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-25 19:20:22,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-25 19:20:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 19:20:22,768 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 19:20:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-25 19:20:22,768 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-25 19:20:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:20:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 19:20:22,768 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 19:20:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_set_state [2021-11-25 19:20:22,769 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_set_state [2021-11-25 19:20:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2021-11-25 19:20:22,769 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2021-11-25 19:20:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:20:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set_varlen [2021-11-25 19:20:22,770 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set_varlen [2021-11-25 19:20:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2021-11-25 19:20:22,770 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2021-11-25 19:20:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2021-11-25 19:20:22,770 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2021-11-25 19:20:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:20:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_close [2021-11-25 19:20:22,771 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_close [2021-11-25 19:20:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-25 19:20:22,771 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-25 19:20:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_get_request [2021-11-25 19:20:22,771 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_get_request [2021-11-25 19:20:22,772 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-25 19:20:22,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-25 19:20:22,772 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 19:20:22,772 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 19:20:22,772 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 19:20:22,772 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 19:20:22,773 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 19:20:22,773 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 19:20:22,773 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_remove [2021-11-25 19:20:22,773 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_remove [2021-11-25 19:20:22,773 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_w32_flush [2021-11-25 19:20:22,773 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_w32_flush [2021-11-25 19:20:22,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 19:20:22,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 19:20:22,774 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 19:20:22,774 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 19:20:22,774 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-11-25 19:20:22,774 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-11-25 19:20:22,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 19:20:22,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 19:20:22,775 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-25 19:20:22,775 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-25 19:20:22,775 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit_list [2021-11-25 19:20:22,775 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit_list [2021-11-25 19:20:22,775 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-25 19:20:22,776 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-25 19:20:22,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 19:20:22,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 19:20:22,776 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 19:20:22,776 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 19:20:22,776 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 19:20:22,777 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 19:20:22,777 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgmt_rx_fill [2021-11-25 19:20:22,777 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgmt_rx_fill [2021-11-25 19:20:22,777 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_transaction [2021-11-25 19:20:22,777 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_transaction [2021-11-25 19:20:22,777 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 19:20:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 19:20:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 19:20:22,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 19:20:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure channel_of_freq [2021-11-25 19:20:22,785 INFO L138 BoogieDeclarations]: Found implementation of procedure channel_of_freq [2021-11-25 19:20:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:20:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-25 19:20:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-25 19:20:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-25 19:20:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-25 19:20:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:20:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:20:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_free_memory [2021-11-25 19:20:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_free_memory [2021-11-25 19:20:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_islpci_acl [2021-11-25 19:20:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_islpci_acl [2021-11-25 19:20:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit [2021-11-25 19:20:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit [2021-11-25 19:20:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 19:20:22,788 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 19:20:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32s [2021-11-25 19:20:22,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32s [2021-11-25 19:20:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-11-25 19:20:22,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-11-25 19:20:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 19:20:22,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 19:20:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 19:20:22,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 19:20:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-25 19:20:22,789 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-25 19:20:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-25 19:20:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-25 19:20:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_in_queue [2021-11-25 19:20:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_in_queue [2021-11-25 19:20:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_islpci_acl [2021-11-25 19:20:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_islpci_acl [2021-11-25 19:20:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-25 19:20:22,791 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-25 19:20:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 19:20:22,791 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 19:20:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:20:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 19:20:22,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 19:20:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-25 19:20:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-25 19:20:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_disable_interrupts [2021-11-25 19:20:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_disable_interrupts [2021-11-25 19:20:23,917 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:20:23,921 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:20:24,460 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:20:32,599 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 19:20:32,901 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:20:34,675 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:20:34,676 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-25 19:20:34,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:20:34 BoogieIcfgContainer [2021-11-25 19:20:34,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:20:34,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:20:34,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:20:34,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:20:34,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:20:15" (1/3) ... [2021-11-25 19:20:34,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54edfd77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:20:34, skipping insertion in model container [2021-11-25 19:20:34,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:20:21" (2/3) ... [2021-11-25 19:20:34,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54edfd77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:20:34, skipping insertion in model container [2021-11-25 19:20:34,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:20:34" (3/3) ... [2021-11-25 19:20:34,699 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i [2021-11-25 19:20:34,709 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:20:34,709 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-25 19:20:34,783 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:20:34,797 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 [2021-11-25 19:20:34,797 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-25 19:20:34,865 INFO L276 IsEmpty]: Start isEmpty. Operand has 1847 states, 1095 states have (on average 1.3105022831050228) internal successors, (1435), 1145 states have internal predecessors, (1435), 618 states have call successors, (618), 131 states have call predecessors, (618), 130 states have return successors, (612), 593 states have call predecessors, (612), 612 states have call successors, (612) [2021-11-25 19:20:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-25 19:20:34,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:20:34,882 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:20:34,883 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 19:20:34,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:20:34,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1244152710, now seen corresponding path program 1 times [2021-11-25 19:20:34,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:20:34,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867306654] [2021-11-25 19:20:34,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:34,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:20:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:20:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-25 19:20:35,882 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:20:35,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867306654] [2021-11-25 19:20:35,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867306654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:20:35,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:20:35,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:20:35,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910381783] [2021-11-25 19:20:35,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:20:35,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:20:35,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:20:35,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:20:35,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:20:35,924 INFO L87 Difference]: Start difference. First operand has 1847 states, 1095 states have (on average 1.3105022831050228) internal successors, (1435), 1145 states have internal predecessors, (1435), 618 states have call successors, (618), 131 states have call predecessors, (618), 130 states have return successors, (612), 593 states have call predecessors, (612), 612 states have call successors, (612) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 19:20:39,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:20:39,433 INFO L93 Difference]: Finished difference Result 5446 states and 8038 transitions. [2021-11-25 19:20:39,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:20:39,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 81 [2021-11-25 19:20:39,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:20:39,482 INFO L225 Difference]: With dead ends: 5446 [2021-11-25 19:20:39,483 INFO L226 Difference]: Without dead ends: 3602 [2021-11-25 19:20:39,502 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 [2021-11-25 19:20:39,506 INFO L933 BasicCegarLoop]: 2892 mSDtfsCounter, 2564 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2564 SdHoareTripleChecker+Valid, 5165 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:20:39,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2564 Valid, 5165 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-25 19:20:39,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2021-11-25 19:20:39,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 3596. [2021-11-25 19:20:39,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3596 states, 2145 states have (on average 1.3034965034965036) internal successors, (2796), 2243 states have internal predecessors, (2796), 1191 states have call successors, (1191), 257 states have call predecessors, (1191), 256 states have return successors, (1187), 1149 states have call predecessors, (1187), 1187 states have call successors, (1187) [2021-11-25 19:20:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5174 transitions. [2021-11-25 19:20:40,026 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5174 transitions. Word has length 81 [2021-11-25 19:20:40,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:20:40,028 INFO L470 AbstractCegarLoop]: Abstraction has 3596 states and 5174 transitions. [2021-11-25 19:20:40,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 19:20:40,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5174 transitions. [2021-11-25 19:20:40,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-25 19:20:40,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:20:40,041 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:20:40,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:20:40,042 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 19:20:40,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:20:40,043 INFO L85 PathProgramCache]: Analyzing trace with hash -831299960, now seen corresponding path program 1 times [2021-11-25 19:20:40,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:20:40,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802345536] [2021-11-25 19:20:40,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:40,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:20:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:20:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-25 19:20:40,568 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:20:40,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802345536] [2021-11-25 19:20:40,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802345536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:20:40,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:20:40,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:20:40,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482116290] [2021-11-25 19:20:40,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:20:40,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:20:40,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:20:40,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:20:40,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:20:40,572 INFO L87 Difference]: Start difference. First operand 3596 states and 5174 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 19:20:44,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:20:44,184 INFO L93 Difference]: Finished difference Result 8953 states and 12879 transitions. [2021-11-25 19:20:44,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:20:44,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 81 [2021-11-25 19:20:44,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:20:44,240 INFO L225 Difference]: With dead ends: 8953 [2021-11-25 19:20:44,240 INFO L226 Difference]: Without dead ends: 5370 [2021-11-25 19:20:44,263 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 [2021-11-25 19:20:44,265 INFO L933 BasicCegarLoop]: 2894 mSDtfsCounter, 2565 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2565 SdHoareTripleChecker+Valid, 5177 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:20:44,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2565 Valid, 5177 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-25 19:20:44,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5370 states. [2021-11-25 19:20:44,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5370 to 5348. [2021-11-25 19:20:44,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5348 states, 3187 states have (on average 1.3024788202070914) internal successors, (4151), 3336 states have internal predecessors, (4151), 1772 states have call successors, (1772), 386 states have call predecessors, (1772), 385 states have return successors, (1768), 1706 states have call predecessors, (1768), 1768 states have call successors, (1768) [2021-11-25 19:20:44,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5348 states to 5348 states and 7691 transitions. [2021-11-25 19:20:44,583 INFO L78 Accepts]: Start accepts. Automaton has 5348 states and 7691 transitions. Word has length 81 [2021-11-25 19:20:44,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:20:44,587 INFO L470 AbstractCegarLoop]: Abstraction has 5348 states and 7691 transitions. [2021-11-25 19:20:44,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 19:20:44,587 INFO L276 IsEmpty]: Start isEmpty. Operand 5348 states and 7691 transitions. [2021-11-25 19:20:44,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-25 19:20:44,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:20:44,591 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:20:44,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:20:44,591 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 19:20:44,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:20:44,592 INFO L85 PathProgramCache]: Analyzing trace with hash -398230191, now seen corresponding path program 1 times [2021-11-25 19:20:44,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:20:44,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655921526] [2021-11-25 19:20:44,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:44,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:20:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:20:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-25 19:20:45,317 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:20:45,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655921526] [2021-11-25 19:20:45,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655921526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:20:45,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:20:45,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:20:45,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561052713] [2021-11-25 19:20:45,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:20:45,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:20:45,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:20:45,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:20:45,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:20:45,323 INFO L87 Difference]: Start difference. First operand 5348 states and 7691 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 19:20:55,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:20:55,089 INFO L93 Difference]: Finished difference Result 16146 states and 23097 transitions. [2021-11-25 19:20:55,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:20:55,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2021-11-25 19:20:55,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:20:55,186 INFO L225 Difference]: With dead ends: 16146 [2021-11-25 19:20:55,186 INFO L226 Difference]: Without dead ends: 10811 [2021-11-25 19:20:55,223 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 [2021-11-25 19:20:55,225 INFO L933 BasicCegarLoop]: 3298 mSDtfsCounter, 6087 mSDsluCounter, 6449 mSDsCounter, 0 mSdLazyCounter, 3450 mSolverCounterSat, 936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6221 SdHoareTripleChecker+Valid, 8655 SdHoareTripleChecker+Invalid, 4386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 936 IncrementalHoareTripleChecker+Valid, 3450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:20:55,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6221 Valid, 8655 Invalid, 4386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [936 Valid, 3450 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2021-11-25 19:20:55,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10811 states. [2021-11-25 19:20:55,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10811 to 10759. [2021-11-25 19:20:55,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10759 states, 6471 states have (on average 1.301808066759388) internal successors, (8424), 6799 states have internal predecessors, (8424), 3450 states have call successors, (3450), 839 states have call predecessors, (3450), 834 states have return successors, (3446), 3294 states have call predecessors, (3446), 3446 states have call successors, (3446) [2021-11-25 19:20:55,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10759 states to 10759 states and 15320 transitions. [2021-11-25 19:20:55,955 INFO L78 Accepts]: Start accepts. Automaton has 10759 states and 15320 transitions. Word has length 84 [2021-11-25 19:20:55,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:20:55,956 INFO L470 AbstractCegarLoop]: Abstraction has 10759 states and 15320 transitions. [2021-11-25 19:20:55,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 19:20:55,957 INFO L276 IsEmpty]: Start isEmpty. Operand 10759 states and 15320 transitions. [2021-11-25 19:20:55,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 19:20:55,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:20:55,961 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:20:55,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:20:55,961 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 19:20:55,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:20:55,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1896849701, now seen corresponding path program 1 times [2021-11-25 19:20:55,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:20:55,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031388209] [2021-11-25 19:20:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:55,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:20:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:20:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-25 19:20:56,477 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:20:56,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031388209] [2021-11-25 19:20:56,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031388209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:20:56,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:20:56,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:20:56,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127202008] [2021-11-25 19:20:56,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:20:56,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:20:56,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:20:56,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:20:56,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:20:56,484 INFO L87 Difference]: Start difference. First operand 10759 states and 15320 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 19:21:00,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:00,655 INFO L93 Difference]: Finished difference Result 26684 states and 37829 transitions. [2021-11-25 19:21:00,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:21:00,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 91 [2021-11-25 19:21:00,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:00,787 INFO L225 Difference]: With dead ends: 26684 [2021-11-25 19:21:00,787 INFO L226 Difference]: Without dead ends: 15938 [2021-11-25 19:21:00,852 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 [2021-11-25 19:21:00,853 INFO L933 BasicCegarLoop]: 2856 mSDtfsCounter, 2449 mSDsluCounter, 2558 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 5082 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:00,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2449 Valid, 5082 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-25 19:21:00,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15938 states. [2021-11-25 19:21:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15938 to 15890. [2021-11-25 19:21:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15890 states, 9552 states have (on average 1.2934463986599665) internal successors, (12355), 10012 states have internal predecessors, (12355), 5044 states have call successors, (5044), 1307 states have call predecessors, (5044), 1290 states have return successors, (5044), 4816 states have call predecessors, (5044), 5040 states have call successors, (5044) [2021-11-25 19:21:01,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15890 states to 15890 states and 22443 transitions. [2021-11-25 19:21:01,853 INFO L78 Accepts]: Start accepts. Automaton has 15890 states and 22443 transitions. Word has length 91 [2021-11-25 19:21:01,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:01,854 INFO L470 AbstractCegarLoop]: Abstraction has 15890 states and 22443 transitions. [2021-11-25 19:21:01,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 19:21:01,855 INFO L276 IsEmpty]: Start isEmpty. Operand 15890 states and 22443 transitions. [2021-11-25 19:21:01,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-25 19:21:01,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:01,864 INFO L514 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:21:01,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:21:01,865 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 19:21:01,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:01,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1658384968, now seen corresponding path program 1 times [2021-11-25 19:21:01,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:01,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710711007] [2021-11-25 19:21:01,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:01,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-25 19:21:02,529 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:02,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710711007] [2021-11-25 19:21:02,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710711007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:02,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:02,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:21:02,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640455011] [2021-11-25 19:21:02,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:02,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:21:02,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:02,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:21:02,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:21:02,531 INFO L87 Difference]: Start difference. First operand 15890 states and 22443 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-25 19:21:06,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:06,504 INFO L93 Difference]: Finished difference Result 15896 states and 22448 transitions. [2021-11-25 19:21:06,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:21:06,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 123 [2021-11-25 19:21:06,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:06,584 INFO L225 Difference]: With dead ends: 15896 [2021-11-25 19:21:06,584 INFO L226 Difference]: Without dead ends: 15894 [2021-11-25 19:21:06,595 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 [2021-11-25 19:21:06,596 INFO L933 BasicCegarLoop]: 2286 mSDtfsCounter, 2601 mSDsluCounter, 5260 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2607 SdHoareTripleChecker+Valid, 6850 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:06,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2607 Valid, 6850 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 19:21:06,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15894 states. [2021-11-25 19:21:07,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15894 to 15894. [2021-11-25 19:21:07,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15894 states, 9555 states have (on average 1.2933542647828362) internal successors, (12358), 10015 states have internal predecessors, (12358), 5044 states have call successors, (5044), 1308 states have call predecessors, (5044), 1291 states have return successors, (5044), 4816 states have call predecessors, (5044), 5040 states have call successors, (5044) [2021-11-25 19:21:07,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15894 states to 15894 states and 22446 transitions. [2021-11-25 19:21:07,507 INFO L78 Accepts]: Start accepts. Automaton has 15894 states and 22446 transitions. Word has length 123 [2021-11-25 19:21:07,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:07,509 INFO L470 AbstractCegarLoop]: Abstraction has 15894 states and 22446 transitions. [2021-11-25 19:21:07,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-25 19:21:07,509 INFO L276 IsEmpty]: Start isEmpty. Operand 15894 states and 22446 transitions. [2021-11-25 19:21:07,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 19:21:07,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:07,516 INFO L514 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:21:07,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:21:07,517 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 19:21:07,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:07,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1365861904, now seen corresponding path program 1 times [2021-11-25 19:21:07,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:07,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887656382] [2021-11-25 19:21:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:07,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:08,023 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2021-11-25 19:21:08,024 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:08,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887656382] [2021-11-25 19:21:08,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887656382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:08,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:08,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:21:08,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715787439] [2021-11-25 19:21:08,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:08,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:21:08,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:08,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:21:08,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:21:08,026 INFO L87 Difference]: Start difference. First operand 15894 states and 22446 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (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) [2021-11-25 19:21:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:12,373 INFO L93 Difference]: Finished difference Result 15900 states and 22451 transitions. [2021-11-25 19:21:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:21:12,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (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 131 [2021-11-25 19:21:12,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:12,456 INFO L225 Difference]: With dead ends: 15900 [2021-11-25 19:21:12,457 INFO L226 Difference]: Without dead ends: 15898 [2021-11-25 19:21:12,467 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 [2021-11-25 19:21:12,470 INFO L933 BasicCegarLoop]: 2289 mSDtfsCounter, 2595 mSDsluCounter, 5260 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2600 SdHoareTripleChecker+Valid, 6853 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:12,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2600 Valid, 6853 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-25 19:21:12,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15898 states. [2021-11-25 19:21:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15898 to 15898. [2021-11-25 19:21:13,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15898 states, 9558 states have (on average 1.2932621887424147) internal successors, (12361), 10018 states have internal predecessors, (12361), 5044 states have call successors, (5044), 1309 states have call predecessors, (5044), 1292 states have return successors, (5044), 4816 states have call predecessors, (5044), 5040 states have call successors, (5044) [2021-11-25 19:21:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15898 states to 15898 states and 22449 transitions. [2021-11-25 19:21:13,334 INFO L78 Accepts]: Start accepts. Automaton has 15898 states and 22449 transitions. Word has length 131 [2021-11-25 19:21:13,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:13,335 INFO L470 AbstractCegarLoop]: Abstraction has 15898 states and 22449 transitions. [2021-11-25 19:21:13,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (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) [2021-11-25 19:21:13,335 INFO L276 IsEmpty]: Start isEmpty. Operand 15898 states and 22449 transitions. [2021-11-25 19:21:13,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-25 19:21:13,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:13,341 INFO L514 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 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] [2021-11-25 19:21:13,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:21:13,342 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 19:21:13,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:13,342 INFO L85 PathProgramCache]: Analyzing trace with hash -963294740, now seen corresponding path program 1 times [2021-11-25 19:21:13,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:13,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953378919] [2021-11-25 19:21:13,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:13,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-11-25 19:21:13,840 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:13,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953378919] [2021-11-25 19:21:13,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953378919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:13,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:13,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:21:13,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425810223] [2021-11-25 19:21:13,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:13,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:21:13,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:13,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:21:13,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:21:13,844 INFO L87 Difference]: Start difference. First operand 15898 states and 22449 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 19:21:20,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:20,702 INFO L93 Difference]: Finished difference Result 30862 states and 43804 transitions. [2021-11-25 19:21:20,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:21:20,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 136 [2021-11-25 19:21:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:20,885 INFO L225 Difference]: With dead ends: 30862 [2021-11-25 19:21:20,886 INFO L226 Difference]: Without dead ends: 30860 [2021-11-25 19:21:20,909 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 [2021-11-25 19:21:20,912 INFO L933 BasicCegarLoop]: 3008 mSDtfsCounter, 2579 mSDsluCounter, 9312 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2583 SdHoareTripleChecker+Valid, 11240 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:20,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2583 Valid, 11240 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-25 19:21:20,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30860 states. [2021-11-25 19:21:22,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30860 to 30818. [2021-11-25 19:21:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30818 states, 18519 states have (on average 1.29477833576327) internal successors, (23978), 19445 states have internal predecessors, (23978), 9832 states have call successors, (9832), 2531 states have call predecessors, (9832), 2463 states have return successors, (9948), 9325 states have call predecessors, (9948), 9824 states have call successors, (9948) [2021-11-25 19:21:22,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30818 states to 30818 states and 43758 transitions. [2021-11-25 19:21:22,884 INFO L78 Accepts]: Start accepts. Automaton has 30818 states and 43758 transitions. Word has length 136 [2021-11-25 19:21:22,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:22,884 INFO L470 AbstractCegarLoop]: Abstraction has 30818 states and 43758 transitions. [2021-11-25 19:21:22,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 19:21:22,885 INFO L276 IsEmpty]: Start isEmpty. Operand 30818 states and 43758 transitions. [2021-11-25 19:21:22,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-25 19:21:22,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:22,891 INFO L514 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:21:22,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:21:22,892 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 19:21:22,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:22,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1267617584, now seen corresponding path program 1 times [2021-11-25 19:21:22,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:22,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741667022] [2021-11-25 19:21:22,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:22,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-25 19:21:23,455 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:23,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741667022] [2021-11-25 19:21:23,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741667022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:23,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:23,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:21:23,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148734424] [2021-11-25 19:21:23,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:23,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:21:23,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:23,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:21:23,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:21:23,458 INFO L87 Difference]: Start difference. First operand 30818 states and 43758 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 19:21:29,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:31,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:31,716 INFO L93 Difference]: Finished difference Result 60118 states and 86530 transitions. [2021-11-25 19:21:31,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:21:31,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2021-11-25 19:21:31,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:32,253 INFO L225 Difference]: With dead ends: 60118 [2021-11-25 19:21:32,254 INFO L226 Difference]: Without dead ends: 60116 [2021-11-25 19:21:32,293 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 [2021-11-25 19:21:32,299 INFO L933 BasicCegarLoop]: 2961 mSDtfsCounter, 2549 mSDsluCounter, 9279 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2552 SdHoareTripleChecker+Valid, 11176 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:32,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2552 Valid, 11176 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-11-25 19:21:32,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60116 states. [2021-11-25 19:21:35,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60116 to 60088. [2021-11-25 19:21:35,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60088 states, 36062 states have (on average 1.2946314680272863) internal successors, (46687), 37882 states have internal predecessors, (46687), 19156 states have call successors, (19156), 5002 states have call predecessors, (19156), 4866 states have return successors, (20660), 18123 states have call predecessors, (20660), 19140 states have call successors, (20660) [2021-11-25 19:21:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60088 states to 60088 states and 86503 transitions. [2021-11-25 19:21:36,242 INFO L78 Accepts]: Start accepts. Automaton has 60088 states and 86503 transitions. Word has length 141 [2021-11-25 19:21:36,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:36,245 INFO L470 AbstractCegarLoop]: Abstraction has 60088 states and 86503 transitions. [2021-11-25 19:21:36,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 19:21:36,246 INFO L276 IsEmpty]: Start isEmpty. Operand 60088 states and 86503 transitions. [2021-11-25 19:21:36,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-25 19:21:36,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:36,251 INFO L514 BasicCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 4, 4, 3, 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] [2021-11-25 19:21:36,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:21:36,252 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 19:21:36,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:36,253 INFO L85 PathProgramCache]: Analyzing trace with hash 572306611, now seen corresponding path program 1 times [2021-11-25 19:21:36,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:36,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014795049] [2021-11-25 19:21:36,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:36,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-25 19:21:36,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:36,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014795049] [2021-11-25 19:21:36,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014795049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:36,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:36,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:21:36,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362241566] [2021-11-25 19:21:36,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:36,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:21:36,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:36,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:21:36,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:21:36,954 INFO L87 Difference]: Start difference. First operand 60088 states and 86503 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 19:21:52,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:52,352 INFO L93 Difference]: Finished difference Result 178896 states and 257689 transitions. [2021-11-25 19:21:52,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:21:52,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 138 [2021-11-25 19:21:52,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:53,363 INFO L225 Difference]: With dead ends: 178896 [2021-11-25 19:21:53,364 INFO L226 Difference]: Without dead ends: 119272 [2021-11-25 19:21:53,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:21:53,904 INFO L933 BasicCegarLoop]: 5005 mSDtfsCounter, 5326 mSDsluCounter, 5707 mSDsCounter, 0 mSdLazyCounter, 4093 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5455 SdHoareTripleChecker+Valid, 9749 SdHoareTripleChecker+Invalid, 4244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 4093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:53,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5455 Valid, 9749 Invalid, 4244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 4093 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2021-11-25 19:21:54,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119272 states. [2021-11-25 19:21:59,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119272 to 118836. [2021-11-25 19:21:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118836 states, 71248 states have (on average 1.295124073658208) internal successors, (92275), 74924 states have internal predecessors, (92275), 37944 states have call successors, (37944), 9908 states have call predecessors, (37944), 9640 states have return successors, (40968), 35835 states have call predecessors, (40968), 37928 states have call successors, (40968) [2021-11-25 19:22:01,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118836 states to 118836 states and 171187 transitions. [2021-11-25 19:22:01,134 INFO L78 Accepts]: Start accepts. Automaton has 118836 states and 171187 transitions. Word has length 138 [2021-11-25 19:22:01,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:01,135 INFO L470 AbstractCegarLoop]: Abstraction has 118836 states and 171187 transitions. [2021-11-25 19:22:01,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 19:22:01,136 INFO L276 IsEmpty]: Start isEmpty. Operand 118836 states and 171187 transitions. [2021-11-25 19:22:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-25 19:22:01,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:01,143 INFO L514 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 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] [2021-11-25 19:22:01,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:22:01,144 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 19:22:01,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:01,144 INFO L85 PathProgramCache]: Analyzing trace with hash -261790998, now seen corresponding path program 1 times [2021-11-25 19:22:01,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:22:01,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959092057] [2021-11-25 19:22:01,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:01,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:22:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2021-11-25 19:22:01,772 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:01,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959092057] [2021-11-25 19:22:01,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959092057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:01,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:01,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:22:01,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101730399] [2021-11-25 19:22:01,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:01,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:22:01,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:22:01,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:22:01,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:22:01,775 INFO L87 Difference]: Start difference. First operand 118836 states and 171187 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (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) [2021-11-25 19:22:10,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:10,854 INFO L93 Difference]: Finished difference Result 118854 states and 171204 transitions. [2021-11-25 19:22:10,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:22:10,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (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 147 [2021-11-25 19:22:10,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:11,453 INFO L225 Difference]: With dead ends: 118854 [2021-11-25 19:22:11,453 INFO L226 Difference]: Without dead ends: 118852 [2021-11-25 19:22:11,500 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 [2021-11-25 19:22:11,501 INFO L933 BasicCegarLoop]: 2289 mSDtfsCounter, 2595 mSDsluCounter, 5260 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2597 SdHoareTripleChecker+Valid, 6853 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:11,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2597 Valid, 6853 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-25 19:22:11,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118852 states. [2021-11-25 19:22:16,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118852 to 118852. [2021-11-25 19:22:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118852 states, 71260 states have (on average 1.295074375526242) internal successors, (92287), 74936 states have internal predecessors, (92287), 37944 states have call successors, (37944), 9912 states have call predecessors, (37944), 9644 states have return successors, (40968), 35835 states have call predecessors, (40968), 37928 states have call successors, (40968) [2021-11-25 19:22:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118852 states to 118852 states and 171199 transitions. [2021-11-25 19:22:17,511 INFO L78 Accepts]: Start accepts. Automaton has 118852 states and 171199 transitions. Word has length 147 [2021-11-25 19:22:17,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:17,512 INFO L470 AbstractCegarLoop]: Abstraction has 118852 states and 171199 transitions. [2021-11-25 19:22:17,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (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) [2021-11-25 19:22:17,512 INFO L276 IsEmpty]: Start isEmpty. Operand 118852 states and 171199 transitions. [2021-11-25 19:22:17,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-25 19:22:17,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:17,521 INFO L514 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 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] [2021-11-25 19:22:17,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:22:17,522 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-25 19:22:17,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:17,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1773556850, now seen corresponding path program 1 times [2021-11-25 19:22:17,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:22:17,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324721626] [2021-11-25 19:22:17,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:17,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:22:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-11-25 19:22:18,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:18,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324721626] [2021-11-25 19:22:18,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324721626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:18,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:18,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:22:18,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870169644] [2021-11-25 19:22:18,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:18,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:22:18,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:22:18,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:22:18,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:22:18,578 INFO L87 Difference]: Start difference. First operand 118852 states and 171199 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (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) [2021-11-25 19:22:24,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []