./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-ethernet-via-via-rhine.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_f4027418-5dc7-459a-91ff-ebe90725bf71/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4027418-5dc7-459a-91ff-ebe90725bf71/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_f4027418-5dc7-459a-91ff-ebe90725bf71/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4027418-5dc7-459a-91ff-ebe90725bf71/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-ethernet-via-via-rhine.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4027418-5dc7-459a-91ff-ebe90725bf71/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_f4027418-5dc7-459a-91ff-ebe90725bf71/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 c5b0d1bb6abf00f856e27261b150a3be237701039761971659caf0639a1797fb --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:53:43,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:53:43,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:53:43,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:53:43,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:53:43,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:53:43,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:53:43,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:53:43,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:53:43,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:53:43,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:53:43,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:53:43,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:53:43,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:53:43,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:53:43,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:53:43,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:53:43,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:53:43,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:53:43,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:53:43,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:53:43,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:53:43,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:53:43,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:53:43,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:53:43,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:53:43,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:53:43,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:53:43,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:53:43,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:53:43,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:53:43,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:53:43,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:53:43,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:53:43,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:53:43,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:53:43,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:53:43,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:53:43,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:53:43,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:53:43,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:53:43,443 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4027418-5dc7-459a-91ff-ebe90725bf71/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:53:43,487 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:53:43,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:53:43,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:53:43,495 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:53:43,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:53:43,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:53:43,497 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:53:43,497 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:53:43,497 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:53:43,497 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:53:43,498 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:53:43,499 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:53:43,499 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:53:43,499 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:53:43,499 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:53:43,500 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:53:43,500 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:53:43,500 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:53:43,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:53:43,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:53:43,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:53:43,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:53:43,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:53:43,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:53:43,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:53:43,503 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:53:43,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:53:43,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:53:43,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:53:43,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:53:43,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:53:43,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:53:43,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:53:43,507 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:53:43,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:53:43,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:53:43,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:53:43,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:53:43,508 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_f4027418-5dc7-459a-91ff-ebe90725bf71/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4027418-5dc7-459a-91ff-ebe90725bf71/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5b0d1bb6abf00f856e27261b150a3be237701039761971659caf0639a1797fb [2021-11-25 19:53:43,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:53:43,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:53:43,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:53:43,808 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:53:43,809 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:53:43,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4027418-5dc7-459a-91ff-ebe90725bf71/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-25 19:53:43,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4027418-5dc7-459a-91ff-ebe90725bf71/bin/utaipan-eEHZpOm5b7/data/894c8efd5/36a323ed1e6e4aefafb75eefbfab7d11/FLAG6bed14458 [2021-11-25 19:53:44,856 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:53:44,857 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4027418-5dc7-459a-91ff-ebe90725bf71/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-25 19:53:44,930 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4027418-5dc7-459a-91ff-ebe90725bf71/bin/utaipan-eEHZpOm5b7/data/894c8efd5/36a323ed1e6e4aefafb75eefbfab7d11/FLAG6bed14458 [2021-11-25 19:53:45,234 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4027418-5dc7-459a-91ff-ebe90725bf71/bin/utaipan-eEHZpOm5b7/data/894c8efd5/36a323ed1e6e4aefafb75eefbfab7d11 [2021-11-25 19:53:45,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:53:45,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:53:45,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:53:45,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:53:45,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:53:45,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:53:45" (1/1) ... [2021-11-25 19:53:45,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d73ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:45, skipping insertion in model container [2021-11-25 19:53:45,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:53:45" (1/1) ... [2021-11-25 19:53:45,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:53:45,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:53:48,830 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_f4027418-5dc7-459a-91ff-ebe90725bf71/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[380944,380957] [2021-11-25 19:53:48,833 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_f4027418-5dc7-459a-91ff-ebe90725bf71/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381110,381123] [2021-11-25 19:53:48,834 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_f4027418-5dc7-459a-91ff-ebe90725bf71/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381274,381287] [2021-11-25 19:53:48,834 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_f4027418-5dc7-459a-91ff-ebe90725bf71/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381439,381452] [2021-11-25 19:53:48,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:53:49,011 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:53:49,467 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_f4027418-5dc7-459a-91ff-ebe90725bf71/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[380944,380957] [2021-11-25 19:53:49,468 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_f4027418-5dc7-459a-91ff-ebe90725bf71/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381110,381123] [2021-11-25 19:53:49,468 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_f4027418-5dc7-459a-91ff-ebe90725bf71/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381274,381287] [2021-11-25 19:53:49,469 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_f4027418-5dc7-459a-91ff-ebe90725bf71/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i[381439,381452] [2021-11-25 19:53:49,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:53:49,786 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:53:49,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:49 WrapperNode [2021-11-25 19:53:49,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:53:49,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:53:49,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:53:49,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:53:49,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:49" (1/1) ... [2021-11-25 19:53:49,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:49" (1/1) ... [2021-11-25 19:53:50,161 INFO L137 Inliner]: procedures = 490, calls = 2655, calls flagged for inlining = 292, calls inlined = 259, statements flattened = 5839 [2021-11-25 19:53:50,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:53:50,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:53:50,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:53:50,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:53:50,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:49" (1/1) ... [2021-11-25 19:53:50,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:49" (1/1) ... [2021-11-25 19:53:50,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:49" (1/1) ... [2021-11-25 19:53:50,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:49" (1/1) ... [2021-11-25 19:53:50,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:49" (1/1) ... [2021-11-25 19:53:50,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:49" (1/1) ... [2021-11-25 19:53:50,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:49" (1/1) ... [2021-11-25 19:53:50,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:53:50,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:53:50,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:53:50,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:53:50,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:49" (1/1) ... [2021-11-25 19:53:50,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:53:50,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4027418-5dc7-459a-91ff-ebe90725bf71/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:53:50,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4027418-5dc7-459a-91ff-ebe90725bf71/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:53:50,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4027418-5dc7-459a-91ff-ebe90725bf71/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:53:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 19:53:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 19:53:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 19:53:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 19:53:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-25 19:53:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-25 19:53:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 19:53:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 19:53:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:53:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:53:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 19:53:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 19:53:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure free_tbufs [2021-11-25 19:53:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tbufs [2021-11-25 19:53:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-25 19:53:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-25 19:53:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 19:53:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 19:53:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 19:53:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 19:53:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 19:53:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 19:53:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-25 19:53:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-25 19:53:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_poll [2021-11-25 19:53:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_poll [2021-11-25 19:53:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-25 19:53:50,579 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-25 19:53:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 19:53:50,579 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 19:53:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_low [2021-11-25 19:53:50,579 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_low [2021-11-25 19:53:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 19:53:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 19:53:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 19:53:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 19:53:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 19:53:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 19:53:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-25 19:53:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-25 19:53:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 19:53:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 19:53:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 19:53:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 19:53:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 19:53:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 19:53:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 19:53:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 19:53:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:53:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-25 19:53:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-25 19:53:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit [2021-11-25 19:53:50,585 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit [2021-11-25 19:53:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 19:53:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 19:53:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 19:53:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 19:53:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-25 19:53:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-25 19:53:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_rbufs [2021-11-25 19:53:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_rbufs [2021-11-25 19:53:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 19:53:50,588 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 19:53:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:53:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 19:53:50,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 19:53:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_interrupt [2021-11-25 19:53:50,589 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_interrupt [2021-11-25 19:53:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:53:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 19:53:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 19:53:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 19:53:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 19:53:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 19:53:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 19:53:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_disable [2021-11-25 19:53:50,591 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_disable [2021-11-25 19:53:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-11-25 19:53:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-11-25 19:53:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 19:53:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 19:53:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 19:53:50,593 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 19:53:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_carrier [2021-11-25 19:53:50,593 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_carrier [2021-11-25 19:53:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_shutdown [2021-11-25 19:53:50,594 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_shutdown [2021-11-25 19:53:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:53:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 19:53:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 19:53:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 19:53:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 19:53:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 19:53:50,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 19:53:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-25 19:53:50,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-25 19:53:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:53:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2021-11-25 19:53:50,597 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2021-11-25 19:53:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 19:53:50,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 19:53:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 19:53:50,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 19:53:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:53:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 19:53:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-25 19:53:50,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-25 19:53:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:53:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:53:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-25 19:53:50,604 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-25 19:53:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_rx_mode [2021-11-25 19:53:50,605 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_rx_mode [2021-11-25 19:53:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:53:50,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:53:50,611 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_rx_crc_and_missed_errord [2021-11-25 19:53:50,612 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_rx_crc_and_missed_errord [2021-11-25 19:53:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-25 19:53:50,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-25 19:53:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 19:53:50,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 19:53:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-25 19:53:50,613 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-25 19:53:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 19:53:50,613 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 19:53:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 19:53:50,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 19:53:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2021-11-25 19:53:50,613 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2021-11-25 19:53:50,614 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 19:53:50,614 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 19:53:50,614 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_power_init [2021-11-25 19:53:50,614 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_power_init [2021-11-25 19:53:50,614 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_tx_timeout [2021-11-25 19:53:50,614 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_tx_timeout [2021-11-25 19:53:50,615 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-25 19:53:50,615 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-25 19:53:50,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:53:50,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:53:50,615 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-25 19:53:50,615 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-25 19:53:50,616 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 19:53:50,616 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 19:53:50,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:53:50,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:53:50,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:53:50,616 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-25 19:53:50,617 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_chip_reset [2021-11-25 19:53:50,617 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_chip_reset [2021-11-25 19:53:50,617 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 19:53:50,617 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 19:53:50,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:53:50,617 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:53:50,617 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_cam_mask [2021-11-25 19:53:50,618 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_cam_mask [2021-11-25 19:53:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2021-11-25 19:53:50,618 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2021-11-25 19:53:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 19:53:50,618 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 19:53:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_remove_one [2021-11-25 19:53:50,619 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_remove_one [2021-11-25 19:53:50,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-25 19:53:50,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-25 19:53:50,619 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 19:53:50,619 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 19:53:50,619 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_close [2021-11-25 19:53:50,620 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_close [2021-11-25 19:53:50,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_task_lock_of_rhine_private [2021-11-25 19:53:50,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_task_lock_of_rhine_private [2021-11-25 19:53:50,620 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 19:53:50,620 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 19:53:50,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:53:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 19:53:50,621 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 19:53:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 19:53:50,621 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 19:53:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:53:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_check_media [2021-11-25 19:53:50,621 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_check_media [2021-11-25 19:53:50,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2021-11-25 19:53:50,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2021-11-25 19:53:50,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:53:50,624 INFO L130 BoogieDeclarations]: Found specification of procedure free_rbufs [2021-11-25 19:53:50,624 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rbufs [2021-11-25 19:53:50,624 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_get_events [2021-11-25 19:53:50,624 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_get_events [2021-11-25 19:53:50,624 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 19:53:50,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 19:53:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-25 19:53:50,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-25 19:53:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure enable_mmio [2021-11-25 19:53:50,625 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_mmio [2021-11-25 19:53:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_vlan_cam_mask [2021-11-25 19:53:50,625 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_vlan_cam_mask [2021-11-25 19:53:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-25 19:53:50,626 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-25 19:53:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 19:53:50,626 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 19:53:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-25 19:53:50,626 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-25 19:53:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 19:53:50,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 19:53:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 19:53:50,627 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 19:53:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 19:53:50,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 19:53:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 19:53:50,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 19:53:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 19:53:50,628 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 19:53:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 19:53:50,628 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 19:53:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_disable_linkmon [2021-11-25 19:53:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_disable_linkmon [2021-11-25 19:53:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_ack_events [2021-11-25 19:53:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_ack_events [2021-11-25 19:53:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 19:53:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 19:53:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_resume [2021-11-25 19:53:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_resume [2021-11-25 19:53:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 19:53:50,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 19:53:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:53:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-25 19:53:50,630 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-25 19:53:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:53:50,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:53:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2021-11-25 19:53:50,631 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2021-11-25 19:53:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 19:53:50,631 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 19:53:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_task_lock_of_rhine_private [2021-11-25 19:53:50,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_task_lock_of_rhine_private [2021-11-25 19:53:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_high [2021-11-25 19:53:50,636 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_high [2021-11-25 19:53:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_irq_disable [2021-11-25 19:53:50,636 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_irq_disable [2021-11-25 19:53:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_enable [2021-11-25 19:53:50,637 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_enable [2021-11-25 19:53:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_tbufs [2021-11-25 19:53:50,637 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_tbufs [2021-11-25 19:53:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-25 19:53:50,639 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-25 19:53:50,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 19:53:50,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 19:53:50,639 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-25 19:53:50,639 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-25 19:53:50,640 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-25 19:53:50,640 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-25 19:53:50,640 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_enable_linkmon [2021-11-25 19:53:50,640 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_enable_linkmon [2021-11-25 19:53:50,640 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_vcam [2021-11-25 19:53:50,640 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_vcam [2021-11-25 19:53:50,640 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 19:53:50,641 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 19:53:50,641 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-25 19:53:50,641 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-25 19:53:50,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:53:50,641 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_suspend [2021-11-25 19:53:50,641 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_suspend [2021-11-25 19:53:50,642 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_open [2021-11-25 19:53:50,642 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_open [2021-11-25 19:53:50,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 19:53:50,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 19:53:51,570 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:53:51,574 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:53:51,744 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:03:08,214 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 20:03:08,312 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:03:15,081 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:03:15,082 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-25 20:03:15,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:03:15 BoogieIcfgContainer [2021-11-25 20:03:15,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:03:15,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:03:15,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:03:15,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:03:15,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:53:45" (1/3) ... [2021-11-25 20:03:15,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c5fada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:03:15, skipping insertion in model container [2021-11-25 20:03:15,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:49" (2/3) ... [2021-11-25 20:03:15,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c5fada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:03:15, skipping insertion in model container [2021-11-25 20:03:15,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:03:15" (3/3) ... [2021-11-25 20:03:15,102 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-25 20:03:15,109 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:03:15,109 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 20:03:15,197 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:03:15,215 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 20:03:15,217 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 20:03:15,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 1653 states, 946 states have (on average 1.3128964059196617) internal successors, (1242), 995 states have internal predecessors, (1242), 582 states have call successors, (582), 124 states have call predecessors, (582), 123 states have return successors, (573), 560 states have call predecessors, (573), 573 states have call successors, (573) [2021-11-25 20:03:15,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-25 20:03:15,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:15,333 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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] [2021-11-25 20:03:15,334 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 1 more)] === [2021-11-25 20:03:15,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:15,345 INFO L85 PathProgramCache]: Analyzing trace with hash -191944831, now seen corresponding path program 1 times [2021-11-25 20:03:15,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:15,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473239814] [2021-11-25 20:03:15,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:15,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:18,027 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2021-11-25 20:03:18,028 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:18,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473239814] [2021-11-25 20:03:18,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473239814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:18,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:18,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:18,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805767221] [2021-11-25 20:03:18,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:18,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:18,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:18,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:18,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:18,082 INFO L87 Difference]: Start difference. First operand has 1653 states, 946 states have (on average 1.3128964059196617) internal successors, (1242), 995 states have internal predecessors, (1242), 582 states have call successors, (582), 124 states have call predecessors, (582), 123 states have return successors, (573), 560 states have call predecessors, (573), 573 states have call successors, (573) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-25 20:03:20,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:27,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:27,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:27,360 INFO L93 Difference]: Finished difference Result 4816 states and 7130 transitions. [2021-11-25 20:03:27,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:03:27,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 165 [2021-11-25 20:03:27,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:27,424 INFO L225 Difference]: With dead ends: 4816 [2021-11-25 20:03:27,424 INFO L226 Difference]: Without dead ends: 3179 [2021-11-25 20:03:27,443 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 20:03:27,447 INFO L933 BasicCegarLoop]: 2570 mSDtfsCounter, 2268 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 4566 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:27,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2268 Valid, 4566 Invalid, 726 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 715 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2021-11-25 20:03:27,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2021-11-25 20:03:27,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3175. [2021-11-25 20:03:27,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3175 states, 1826 states have (on average 1.3061336254107339) internal successors, (2385), 1921 states have internal predecessors, (2385), 1104 states have call successors, (1104), 243 states have call predecessors, (1104), 242 states have return successors, (1100), 1074 states have call predecessors, (1100), 1100 states have call successors, (1100) [2021-11-25 20:03:27,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3175 states to 3175 states and 4589 transitions. [2021-11-25 20:03:27,844 INFO L78 Accepts]: Start accepts. Automaton has 3175 states and 4589 transitions. Word has length 165 [2021-11-25 20:03:27,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:27,846 INFO L470 AbstractCegarLoop]: Abstraction has 3175 states and 4589 transitions. [2021-11-25 20:03:27,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-25 20:03:27,846 INFO L276 IsEmpty]: Start isEmpty. Operand 3175 states and 4589 transitions. [2021-11-25 20:03:27,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-25 20:03:27,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:27,853 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:03:27,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:03:27,854 INFO L402 AbstractCegarLoop]: === Iteration 2 === 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 1 more)] === [2021-11-25 20:03:27,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:27,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1365411271, now seen corresponding path program 1 times [2021-11-25 20:03:27,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:27,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141504234] [2021-11-25 20:03:27,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:27,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-25 20:03:29,688 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:29,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141504234] [2021-11-25 20:03:29,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141504234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:29,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:29,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:29,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826882983] [2021-11-25 20:03:29,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:29,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:29,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:29,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:29,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:29,698 INFO L87 Difference]: Start difference. First operand 3175 states and 4589 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:03:31,872 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:38,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:39,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:39,253 INFO L93 Difference]: Finished difference Result 9107 states and 13133 transitions. [2021-11-25 20:03:39,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:03:39,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 165 [2021-11-25 20:03:39,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:39,315 INFO L225 Difference]: With dead ends: 9107 [2021-11-25 20:03:39,315 INFO L226 Difference]: Without dead ends: 5961 [2021-11-25 20:03:39,334 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 20:03:39,336 INFO L933 BasicCegarLoop]: 2539 mSDtfsCounter, 2001 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2001 SdHoareTripleChecker+Valid, 4496 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:39,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2001 Valid, 4496 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 783 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2021-11-25 20:03:39,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2021-11-25 20:03:39,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 5940. [2021-11-25 20:03:39,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 3403 states have (on average 1.2918013517484572) internal successors, (4396), 3577 states have internal predecessors, (4396), 2059 states have call successors, (2059), 476 states have call predecessors, (2059), 475 states have return successors, (2055), 2004 states have call predecessors, (2055), 2055 states have call successors, (2055) [2021-11-25 20:03:39,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 8510 transitions. [2021-11-25 20:03:39,772 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 8510 transitions. Word has length 165 [2021-11-25 20:03:39,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:39,774 INFO L470 AbstractCegarLoop]: Abstraction has 5940 states and 8510 transitions. [2021-11-25 20:03:39,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:03:39,774 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 8510 transitions. [2021-11-25 20:03:39,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-25 20:03:39,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:39,783 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:03:39,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:03:39,784 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 1 more)] === [2021-11-25 20:03:39,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:39,785 INFO L85 PathProgramCache]: Analyzing trace with hash 2131269995, now seen corresponding path program 1 times [2021-11-25 20:03:39,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:39,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170616746] [2021-11-25 20:03:39,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:39,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:41,285 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-25 20:03:41,286 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:41,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170616746] [2021-11-25 20:03:41,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170616746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:41,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:41,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:41,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746892132] [2021-11-25 20:03:41,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:41,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:41,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:41,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:41,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:41,288 INFO L87 Difference]: Start difference. First operand 5940 states and 8510 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 20:03:43,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:49,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:49,932 INFO L93 Difference]: Finished difference Result 16690 states and 23800 transitions. [2021-11-25 20:03:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:03:49,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 166 [2021-11-25 20:03:49,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:50,053 INFO L225 Difference]: With dead ends: 16690 [2021-11-25 20:03:50,053 INFO L226 Difference]: Without dead ends: 10779 [2021-11-25 20:03:50,322 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 20:03:50,323 INFO L933 BasicCegarLoop]: 2481 mSDtfsCounter, 1915 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 4441 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:50,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1915 Valid, 4441 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 731 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-11-25 20:03:50,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10779 states. [2021-11-25 20:03:51,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10779 to 10754. [2021-11-25 20:03:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10754 states, 6127 states have (on average 1.2808878733474784) internal successors, (7848), 6457 states have internal predecessors, (7848), 3721 states have call successors, (3721), 908 states have call predecessors, (3721), 903 states have return successors, (3719), 3604 states have call predecessors, (3719), 3717 states have call successors, (3719) [2021-11-25 20:03:51,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10754 states to 10754 states and 15288 transitions. [2021-11-25 20:03:51,163 INFO L78 Accepts]: Start accepts. Automaton has 10754 states and 15288 transitions. Word has length 166 [2021-11-25 20:03:51,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:51,165 INFO L470 AbstractCegarLoop]: Abstraction has 10754 states and 15288 transitions. [2021-11-25 20:03:51,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 20:03:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 10754 states and 15288 transitions. [2021-11-25 20:03:51,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-25 20:03:51,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:51,173 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:03:51,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:03:51,173 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 1 more)] === [2021-11-25 20:03:51,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:51,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1289738322, now seen corresponding path program 1 times [2021-11-25 20:03:51,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:51,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219753523] [2021-11-25 20:03:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:51,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:52,545 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-25 20:03:52,545 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:52,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219753523] [2021-11-25 20:03:52,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219753523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:52,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:52,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:52,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87643080] [2021-11-25 20:03:52,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:52,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:52,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:52,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:52,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:52,548 INFO L87 Difference]: Start difference. First operand 10754 states and 15288 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 20:03:54,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:59,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:00,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:01,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:01,966 INFO L93 Difference]: Finished difference Result 22758 states and 32260 transitions. [2021-11-25 20:04:01,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:04:01,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 176 [2021-11-25 20:04:01,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:02,097 INFO L225 Difference]: With dead ends: 22758 [2021-11-25 20:04:02,097 INFO L226 Difference]: Without dead ends: 12033 [2021-11-25 20:04:02,161 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 20:04:02,166 INFO L933 BasicCegarLoop]: 2749 mSDtfsCounter, 1983 mSDsluCounter, 2305 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 4722 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:02,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 4722 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 833 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2021-11-25 20:04:02,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12033 states. [2021-11-25 20:04:03,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12033 to 12010. [2021-11-25 20:04:03,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12010 states, 6863 states have (on average 1.2723298848899898) internal successors, (8732), 7232 states have internal predecessors, (8732), 4086 states have call successors, (4086), 1066 states have call predecessors, (4086), 1058 states have return successors, (4084), 3938 states have call predecessors, (4084), 4082 states have call successors, (4084) [2021-11-25 20:04:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12010 states to 12010 states and 16902 transitions. [2021-11-25 20:04:03,179 INFO L78 Accepts]: Start accepts. Automaton has 12010 states and 16902 transitions. Word has length 176 [2021-11-25 20:04:03,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:03,184 INFO L470 AbstractCegarLoop]: Abstraction has 12010 states and 16902 transitions. [2021-11-25 20:04:03,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 20:04:03,185 INFO L276 IsEmpty]: Start isEmpty. Operand 12010 states and 16902 transitions. [2021-11-25 20:04:03,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-25 20:04:03,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:03,190 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:04:03,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:04:03,192 INFO L402 AbstractCegarLoop]: === Iteration 5 === 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 1 more)] === [2021-11-25 20:04:03,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:03,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1253162523, now seen corresponding path program 1 times [2021-11-25 20:04:03,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:03,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129384969] [2021-11-25 20:04:03,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:03,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-25 20:04:04,467 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:04,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129384969] [2021-11-25 20:04:04,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129384969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:04,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:04,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:04:04,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59597565] [2021-11-25 20:04:04,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:04,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:04:04,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:04,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:04:04,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:04:04,469 INFO L87 Difference]: Start difference. First operand 12010 states and 16902 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 20:04:06,632 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:11,705 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:13,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:13,383 INFO L93 Difference]: Finished difference Result 33961 states and 47841 transitions. [2021-11-25 20:04:13,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:04:13,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 177 [2021-11-25 20:04:13,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:13,524 INFO L225 Difference]: With dead ends: 33961 [2021-11-25 20:04:13,525 INFO L226 Difference]: Without dead ends: 21980 [2021-11-25 20:04:13,588 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 20:04:13,590 INFO L933 BasicCegarLoop]: 2571 mSDtfsCounter, 2285 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2285 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:13,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2285 Valid, 4573 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 704 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2021-11-25 20:04:13,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21980 states. [2021-11-25 20:04:15,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21980 to 21947. [2021-11-25 20:04:15,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21947 states, 12530 states have (on average 1.2725458898643256) internal successors, (15945), 13225 states have internal predecessors, (15945), 7482 states have call successors, (7482), 1947 states have call predecessors, (7482), 1932 states have return successors, (7482), 7191 states have call predecessors, (7482), 7478 states have call successors, (7482) [2021-11-25 20:04:15,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21947 states to 21947 states and 30909 transitions. [2021-11-25 20:04:15,254 INFO L78 Accepts]: Start accepts. Automaton has 21947 states and 30909 transitions. Word has length 177 [2021-11-25 20:04:15,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:15,256 INFO L470 AbstractCegarLoop]: Abstraction has 21947 states and 30909 transitions. [2021-11-25 20:04:15,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 20:04:15,257 INFO L276 IsEmpty]: Start isEmpty. Operand 21947 states and 30909 transitions. [2021-11-25 20:04:15,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-25 20:04:15,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:15,263 INFO L514 BasicCegarLoop]: trace histogram [16, 14, 14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:04:15,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:04:15,263 INFO L402 AbstractCegarLoop]: === Iteration 6 === 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 1 more)] === [2021-11-25 20:04:15,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:15,264 INFO L85 PathProgramCache]: Analyzing trace with hash 221818770, now seen corresponding path program 1 times [2021-11-25 20:04:15,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:15,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685506178] [2021-11-25 20:04:15,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:15,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2021-11-25 20:04:17,030 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:17,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685506178] [2021-11-25 20:04:17,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685506178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:17,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:17,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:04:17,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320615851] [2021-11-25 20:04:17,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:17,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:04:17,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:17,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:04:17,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:04:17,033 INFO L87 Difference]: Start difference. First operand 21947 states and 30909 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 20:04:19,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:24,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:26,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:26,383 INFO L93 Difference]: Finished difference Result 60183 states and 84840 transitions. [2021-11-25 20:04:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:04:26,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 185 [2021-11-25 20:04:26,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:26,789 INFO L225 Difference]: With dead ends: 60183 [2021-11-25 20:04:26,790 INFO L226 Difference]: Without dead ends: 38265 [2021-11-25 20:04:26,878 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 20:04:26,880 INFO L933 BasicCegarLoop]: 2880 mSDtfsCounter, 2222 mSDsluCounter, 2320 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2222 SdHoareTripleChecker+Valid, 4865 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:26,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2222 Valid, 4865 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 808 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2021-11-25 20:04:26,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38265 states. [2021-11-25 20:04:29,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38265 to 38216. [2021-11-25 20:04:29,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38216 states, 21918 states have (on average 1.271055753262159) internal successors, (27859), 23171 states have internal predecessors, (27859), 12946 states have call successors, (12946), 3378 states have call predecessors, (12946), 3349 states have return successors, (12950), 12398 states have call predecessors, (12950), 12942 states have call successors, (12950) [2021-11-25 20:04:29,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38216 states to 38216 states and 53755 transitions. [2021-11-25 20:04:29,681 INFO L78 Accepts]: Start accepts. Automaton has 38216 states and 53755 transitions. Word has length 185 [2021-11-25 20:04:29,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:29,682 INFO L470 AbstractCegarLoop]: Abstraction has 38216 states and 53755 transitions. [2021-11-25 20:04:29,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 20:04:29,683 INFO L276 IsEmpty]: Start isEmpty. Operand 38216 states and 53755 transitions. [2021-11-25 20:04:29,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-25 20:04:29,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:29,688 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:04:29,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:04:29,688 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 1 more)] === [2021-11-25 20:04:29,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:29,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1351001441, now seen corresponding path program 1 times [2021-11-25 20:04:29,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:29,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592473801] [2021-11-25 20:04:29,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:29,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2021-11-25 20:04:31,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:31,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592473801] [2021-11-25 20:04:31,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592473801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:31,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:31,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:04:31,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109898018] [2021-11-25 20:04:31,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:31,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:04:31,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:31,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:04:31,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:04:31,736 INFO L87 Difference]: Start difference. First operand 38216 states and 53755 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 20:04:33,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:40,723 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:42,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:42,488 INFO L93 Difference]: Finished difference Result 38222 states and 53760 transitions. [2021-11-25 20:04:42,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:04:42,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 209 [2021-11-25 20:04:42,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:42,702 INFO L225 Difference]: With dead ends: 38222 [2021-11-25 20:04:42,703 INFO L226 Difference]: Without dead ends: 38220 [2021-11-25 20:04:42,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:04:42,722 INFO L933 BasicCegarLoop]: 2007 mSDtfsCounter, 2305 mSDsluCounter, 4701 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 6016 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:42,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2308 Valid, 6016 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1049 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2021-11-25 20:04:42,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38220 states. [2021-11-25 20:04:44,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38220 to 38220. [2021-11-25 20:04:44,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38220 states, 21921 states have (on average 1.271018657907942) internal successors, (27862), 23174 states have internal predecessors, (27862), 12946 states have call successors, (12946), 3379 states have call predecessors, (12946), 3350 states have return successors, (12950), 12398 states have call predecessors, (12950), 12942 states have call successors, (12950) [2021-11-25 20:04:45,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38220 states to 38220 states and 53758 transitions. [2021-11-25 20:04:45,149 INFO L78 Accepts]: Start accepts. Automaton has 38220 states and 53758 transitions. Word has length 209 [2021-11-25 20:04:45,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:45,150 INFO L470 AbstractCegarLoop]: Abstraction has 38220 states and 53758 transitions. [2021-11-25 20:04:45,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 20:04:45,151 INFO L276 IsEmpty]: Start isEmpty. Operand 38220 states and 53758 transitions. [2021-11-25 20:04:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-25 20:04:45,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:45,158 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:04:45,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:04:45,159 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 1 more)] === [2021-11-25 20:04:45,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:45,160 INFO L85 PathProgramCache]: Analyzing trace with hash -498710804, now seen corresponding path program 1 times [2021-11-25 20:04:45,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:45,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086166353] [2021-11-25 20:04:45,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:45,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:47,101 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 881 trivial. 0 not checked. [2021-11-25 20:04:47,101 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:47,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086166353] [2021-11-25 20:04:47,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086166353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:47,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:47,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:04:47,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775118210] [2021-11-25 20:04:47,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:47,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:04:47,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:47,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:04:47,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:04:47,104 INFO L87 Difference]: Start difference. First operand 38220 states and 53758 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 20:04:49,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:55,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:56,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:56,827 INFO L93 Difference]: Finished difference Result 38226 states and 53763 transitions. [2021-11-25 20:04:56,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:04:56,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 212 [2021-11-25 20:04:56,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:57,023 INFO L225 Difference]: With dead ends: 38226 [2021-11-25 20:04:57,023 INFO L226 Difference]: Without dead ends: 38224 [2021-11-25 20:04:57,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:04:57,042 INFO L933 BasicCegarLoop]: 2010 mSDtfsCounter, 2301 mSDsluCounter, 4701 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2303 SdHoareTripleChecker+Valid, 6019 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:57,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2303 Valid, 6019 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1049 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2021-11-25 20:04:57,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38224 states. [2021-11-25 20:04:59,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38224 to 38224. [2021-11-25 20:04:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38224 states, 21924 states have (on average 1.2709815727057105) internal successors, (27865), 23177 states have internal predecessors, (27865), 12946 states have call successors, (12946), 3380 states have call predecessors, (12946), 3351 states have return successors, (12950), 12398 states have call predecessors, (12950), 12942 states have call successors, (12950) [2021-11-25 20:04:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38224 states to 38224 states and 53761 transitions. [2021-11-25 20:04:59,416 INFO L78 Accepts]: Start accepts. Automaton has 38224 states and 53761 transitions. Word has length 212 [2021-11-25 20:04:59,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:59,417 INFO L470 AbstractCegarLoop]: Abstraction has 38224 states and 53761 transitions. [2021-11-25 20:04:59,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 20:04:59,417 INFO L276 IsEmpty]: Start isEmpty. Operand 38224 states and 53761 transitions. [2021-11-25 20:04:59,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-25 20:04:59,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:59,424 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:04:59,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:04:59,425 INFO L402 AbstractCegarLoop]: === Iteration 9 === 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 1 more)] === [2021-11-25 20:04:59,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:59,425 INFO L85 PathProgramCache]: Analyzing trace with hash 414839932, now seen corresponding path program 1 times [2021-11-25 20:04:59,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:59,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206730060] [2021-11-25 20:04:59,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:59,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2021-11-25 20:05:01,275 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:01,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206730060] [2021-11-25 20:05:01,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206730060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:01,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:01,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:05:01,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410551149] [2021-11-25 20:05:01,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:01,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:05:01,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:05:01,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:05:01,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:05:01,277 INFO L87 Difference]: Start difference. First operand 38224 states and 53761 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 20:05:03,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:10,036 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:11,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:11,694 INFO L93 Difference]: Finished difference Result 38230 states and 53766 transitions. [2021-11-25 20:05:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:05:11,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 218 [2021-11-25 20:05:11,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:11,882 INFO L225 Difference]: With dead ends: 38230 [2021-11-25 20:05:11,882 INFO L226 Difference]: Without dead ends: 38226 [2021-11-25 20:05:11,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:05:11,910 INFO L933 BasicCegarLoop]: 2010 mSDtfsCounter, 2300 mSDsluCounter, 4701 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 6019 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:11,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2301 Valid, 6019 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1048 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2021-11-25 20:05:11,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38226 states. [2021-11-25 20:05:13,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38226 to 38226. [2021-11-25 20:05:13,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38226 states, 21926 states have (on average 1.2709112469214632) internal successors, (27866), 23178 states have internal predecessors, (27866), 12946 states have call successors, (12946), 3381 states have call predecessors, (12946), 3351 states have return successors, (12950), 12398 states have call predecessors, (12950), 12942 states have call successors, (12950) [2021-11-25 20:05:14,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38226 states to 38226 states and 53762 transitions. [2021-11-25 20:05:14,071 INFO L78 Accepts]: Start accepts. Automaton has 38226 states and 53762 transitions. Word has length 218 [2021-11-25 20:05:14,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:14,072 INFO L470 AbstractCegarLoop]: Abstraction has 38226 states and 53762 transitions. [2021-11-25 20:05:14,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 20:05:14,073 INFO L276 IsEmpty]: Start isEmpty. Operand 38226 states and 53762 transitions. [2021-11-25 20:05:14,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-25 20:05:14,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:14,079 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:05:14,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:05:14,080 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 1 more)] === [2021-11-25 20:05:14,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:14,080 INFO L85 PathProgramCache]: Analyzing trace with hash 520786508, now seen corresponding path program 1 times [2021-11-25 20:05:14,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:05:14,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965308880] [2021-11-25 20:05:14,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:14,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:15,274 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2021-11-25 20:05:15,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:15,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965308880] [2021-11-25 20:05:15,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965308880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:15,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:15,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:05:15,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098887268] [2021-11-25 20:05:15,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:15,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:05:15,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:05:15,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:05:15,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:05:15,277 INFO L87 Difference]: Start difference. First operand 38226 states and 53762 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 20:05:17,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:24,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:26,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:26,821 INFO L93 Difference]: Finished difference Result 43742 states and 60759 transitions. [2021-11-25 20:05:26,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:05:26,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 222 [2021-11-25 20:05:26,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:26,989 INFO L225 Difference]: With dead ends: 43742 [2021-11-25 20:05:26,990 INFO L226 Difference]: Without dead ends: 43463 [2021-11-25 20:05:27,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:05:27,011 INFO L933 BasicCegarLoop]: 2222 mSDtfsCounter, 2162 mSDsluCounter, 5731 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 7143 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:27,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2162 Valid, 7143 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1186 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2021-11-25 20:05:27,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43463 states. [2021-11-25 20:05:29,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43463 to 43463. [2021-11-25 20:05:29,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43463 states, 24783 states have (on average 1.259613444699996) internal successors, (31217), 26138 states have internal predecessors, (31217), 14492 states have call successors, (14492), 4198 states have call predecessors, (14492), 4186 states have return successors, (14500), 13970 states have call predecessors, (14500), 14492 states have call successors, (14500) [2021-11-25 20:05:29,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43463 states to 43463 states and 60209 transitions. [2021-11-25 20:05:29,930 INFO L78 Accepts]: Start accepts. Automaton has 43463 states and 60209 transitions. Word has length 222 [2021-11-25 20:05:29,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:29,931 INFO L470 AbstractCegarLoop]: Abstraction has 43463 states and 60209 transitions. [2021-11-25 20:05:29,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 20:05:29,931 INFO L276 IsEmpty]: Start isEmpty. Operand 43463 states and 60209 transitions. [2021-11-25 20:05:29,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-25 20:05:29,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:29,940 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:29,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:05:29,941 INFO L402 AbstractCegarLoop]: === Iteration 11 === 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 1 more)] === [2021-11-25 20:05:29,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:29,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1061686274, now seen corresponding path program 1 times [2021-11-25 20:05:29,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:05:29,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101114790] [2021-11-25 20:05:29,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:29,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:31,640 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-11-25 20:05:31,640 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:31,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101114790] [2021-11-25 20:05:31,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101114790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:31,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:31,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:05:31,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667338176] [2021-11-25 20:05:31,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:31,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:05:31,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:05:31,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:05:31,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:05:31,642 INFO L87 Difference]: Start difference. First operand 43463 states and 60209 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-25 20:05:33,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:39,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:42,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:42,210 INFO L93 Difference]: Finished difference Result 106067 states and 146989 transitions. [2021-11-25 20:05:42,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:05:42,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 225 [2021-11-25 20:05:42,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:42,480 INFO L225 Difference]: With dead ends: 106067 [2021-11-25 20:05:42,480 INFO L226 Difference]: Without dead ends: 62775 [2021-11-25 20:05:42,639 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 20:05:42,639 INFO L933 BasicCegarLoop]: 2796 mSDtfsCounter, 1951 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 4735 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:42,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1951 Valid, 4735 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 854 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2021-11-25 20:05:42,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62775 states. [2021-11-25 20:05:45,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62775 to 62755. [2021-11-25 20:05:45,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62755 states, 35841 states have (on average 1.25822382187997) internal successors, (45096), 37794 states have internal predecessors, (45096), 20808 states have call successors, (20808), 6120 states have call predecessors, (20808), 6104 states have return successors, (20820), 20040 states have call predecessors, (20820), 20808 states have call successors, (20820) [2021-11-25 20:05:45,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62755 states to 62755 states and 86724 transitions. [2021-11-25 20:05:45,944 INFO L78 Accepts]: Start accepts. Automaton has 62755 states and 86724 transitions. Word has length 225 [2021-11-25 20:05:45,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:45,945 INFO L470 AbstractCegarLoop]: Abstraction has 62755 states and 86724 transitions. [2021-11-25 20:05:45,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-25 20:05:45,945 INFO L276 IsEmpty]: Start isEmpty. Operand 62755 states and 86724 transitions. [2021-11-25 20:05:45,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-25 20:05:45,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:45,956 INFO L514 BasicCegarLoop]: trace histogram [19, 14, 14, 14, 14, 14, 14, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:05:45,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:05:45,957 INFO L402 AbstractCegarLoop]: === Iteration 12 === 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 1 more)] === [2021-11-25 20:05:45,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:45,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1509852030, now seen corresponding path program 1 times [2021-11-25 20:05:45,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:05:45,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321305672] [2021-11-25 20:05:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:45,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2021-11-25 20:05:46,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:46,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321305672] [2021-11-25 20:05:46,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321305672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:46,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:46,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:05:46,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239412591] [2021-11-25 20:05:46,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:46,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:05:46,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:05:46,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:05:46,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:05:46,991 INFO L87 Difference]: Start difference. First operand 62755 states and 86724 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-25 20:05:49,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:57,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:58,901 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:02,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:06:02,389 INFO L93 Difference]: Finished difference Result 155459 states and 214908 transitions. [2021-11-25 20:06:02,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:06:02,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 237 [2021-11-25 20:06:02,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:06:02,876 INFO L225 Difference]: With dead ends: 155459 [2021-11-25 20:06:02,876 INFO L226 Difference]: Without dead ends: 92875 [2021-11-25 20:06:03,066 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 20:06:03,066 INFO L933 BasicCegarLoop]: 3901 mSDtfsCounter, 2253 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2253 SdHoareTripleChecker+Valid, 5871 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:06:03,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2253 Valid, 5871 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1038 Invalid, 1 Unknown, 0 Unchecked, 11.1s Time] [2021-11-25 20:06:03,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92875 states. [2021-11-25 20:06:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92875 to 92823. [2021-11-25 20:06:07,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92823 states, 53021 states have (on average 1.258256162652534) internal successors, (66714), 55936 states have internal predecessors, (66714), 30754 states have call successors, (30754), 9070 states have call predecessors, (30754), 9046 states have return successors, (30772), 29588 states have call predecessors, (30772), 30754 states have call successors, (30772) [2021-11-25 20:06:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92823 states to 92823 states and 128240 transitions. [2021-11-25 20:06:08,016 INFO L78 Accepts]: Start accepts. Automaton has 92823 states and 128240 transitions. Word has length 237 [2021-11-25 20:06:08,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:06:08,017 INFO L470 AbstractCegarLoop]: Abstraction has 92823 states and 128240 transitions. [2021-11-25 20:06:08,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-25 20:06:08,018 INFO L276 IsEmpty]: Start isEmpty. Operand 92823 states and 128240 transitions. [2021-11-25 20:06:08,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-25 20:06:08,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:06:08,032 INFO L514 BasicCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:06:08,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 20:06:08,032 INFO L402 AbstractCegarLoop]: === Iteration 13 === 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 1 more)] === [2021-11-25 20:06:08,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:06:08,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1488865151, now seen corresponding path program 1 times [2021-11-25 20:06:08,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:06:08,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48531728] [2021-11-25 20:06:08,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:08,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:06:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:06:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2021-11-25 20:06:09,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:06:09,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48531728] [2021-11-25 20:06:09,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48531728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:06:09,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:06:09,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:06:09,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011845189] [2021-11-25 20:06:09,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:06:09,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:06:09,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:06:09,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:06:09,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:06:09,263 INFO L87 Difference]: Start difference. First operand 92823 states and 128240 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 20:06:11,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:19,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:21,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:25,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:06:25,954 INFO L93 Difference]: Finished difference Result 227985 states and 315001 transitions. [2021-11-25 20:06:25,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:06:25,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 246 [2021-11-25 20:06:25,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:06:26,554 INFO L225 Difference]: With dead ends: 227985 [2021-11-25 20:06:26,554 INFO L226 Difference]: Without dead ends: 135333 [2021-11-25 20:06:26,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:06:26,813 INFO L933 BasicCegarLoop]: 3766 mSDtfsCounter, 2105 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 5719 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:06:26,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2105 Valid, 5719 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1042 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2021-11-25 20:06:26,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135333 states.