./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/bin/utaipan-TEXQjIfE4P/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_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c5b0d1bb6abf00f856e27261b150a3be237701039761971659caf0639a1797fb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:12:26,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:12:26,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:12:26,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:12:26,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:12:26,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:12:26,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:12:26,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:12:26,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:12:26,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:12:26,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:12:26,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:12:26,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:12:26,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:12:26,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:12:26,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:12:26,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:12:26,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:12:26,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:12:26,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:12:26,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:12:26,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:12:26,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:12:26,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:12:26,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:12:26,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:12:26,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:12:26,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:12:26,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:12:26,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:12:26,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:12:26,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:12:26,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:12:26,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:12:26,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:12:26,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:12:26,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:12:26,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:12:26,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:12:26,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:12:26,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:12:26,640 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:12:26,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:12:26,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:12:26,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:12:26,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:12:26,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:12:26,672 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:12:26,672 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:12:26,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:12:26,672 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:12:26,673 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:12:26,673 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:12:26,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:12:26,673 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:12:26,673 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:12:26,674 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:12:26,674 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:12:26,674 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:12:26,674 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:12:26,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:12:26,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:12:26,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:12:26,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:12:26,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:12:26,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:12:26,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:12:26,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:12:26,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:12:26,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:12:26,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:12:26,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:12:26,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:12:26,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:12:26,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:12:26,679 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:12:26,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:12:26,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:12:26,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:12:26,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:12:26,680 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_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5b0d1bb6abf00f856e27261b150a3be237701039761971659caf0639a1797fb [2021-11-21 00:12:26,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:12:27,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:12:27,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:12:27,025 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:12:27,026 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:12:27,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-21 00:12:27,142 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/bin/utaipan-TEXQjIfE4P/data/99973b234/d3d6c4d253704adc92d1fa12439980e6/FLAGf93d7f523 [2021-11-21 00:12:28,344 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:12:28,345 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-21 00:12:28,432 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/bin/utaipan-TEXQjIfE4P/data/99973b234/d3d6c4d253704adc92d1fa12439980e6/FLAGf93d7f523 [2021-11-21 00:12:28,656 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/bin/utaipan-TEXQjIfE4P/data/99973b234/d3d6c4d253704adc92d1fa12439980e6 [2021-11-21 00:12:28,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:12:28,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:12:28,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:12:28,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:12:28,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:12:28,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:12:28" (1/1) ... [2021-11-21 00:12:28,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb19a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:28, skipping insertion in model container [2021-11-21 00:12:28,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:12:28" (1/1) ... [2021-11-21 00:12:28,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:12:28,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:12:32,898 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_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/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] [2021-11-21 00:12:32,902 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_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/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] [2021-11-21 00:12:32,903 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_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/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] [2021-11-21 00:12:32,904 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_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/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] [2021-11-21 00:12:32,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:12:33,046 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:12:33,611 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_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/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] [2021-11-21 00:12:33,611 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_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/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] [2021-11-21 00:12:33,612 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_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/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] [2021-11-21 00:12:33,613 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_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/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] [2021-11-21 00:12:33,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:12:33,951 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:12:33,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:33 WrapperNode [2021-11-21 00:12:33,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:12:33,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:12:33,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:12:33,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:12:33,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:33" (1/1) ... [2021-11-21 00:12:34,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:33" (1/1) ... [2021-11-21 00:12:34,361 INFO L137 Inliner]: procedures = 490, calls = 2655, calls flagged for inlining = 292, calls inlined = 259, statements flattened = 5839 [2021-11-21 00:12:34,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:12:34,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:12:34,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:12:34,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:12:34,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:33" (1/1) ... [2021-11-21 00:12:34,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:33" (1/1) ... [2021-11-21 00:12:34,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:33" (1/1) ... [2021-11-21 00:12:34,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:33" (1/1) ... [2021-11-21 00:12:34,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:33" (1/1) ... [2021-11-21 00:12:34,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:33" (1/1) ... [2021-11-21 00:12:34,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:33" (1/1) ... [2021-11-21 00:12:34,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:12:34,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:12:34,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:12:34,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:12:34,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:33" (1/1) ... [2021-11-21 00:12:34,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:12:34,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:12:34,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:12:34,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2857ddd-a4ce-426e-b241-61a02b4ba3ac/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:12:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 00:12:34,886 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 00:12:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:12:34,886 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:12:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-21 00:12:34,886 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-21 00:12:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 00:12:34,887 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 00:12:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:12:34,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:12:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 00:12:34,887 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 00:12:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure free_tbufs [2021-11-21 00:12:34,888 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tbufs [2021-11-21 00:12:34,889 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 00:12:34,889 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 00:12:34,889 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 00:12:34,889 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 00:12:34,889 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-21 00:12:34,890 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-21 00:12:34,890 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 00:12:34,890 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 00:12:34,890 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-21 00:12:34,890 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-21 00:12:34,890 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_poll [2021-11-21 00:12:34,891 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_poll [2021-11-21 00:12:34,891 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-21 00:12:34,891 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-21 00:12:34,891 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-21 00:12:34,892 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-21 00:12:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_low [2021-11-21 00:12:34,892 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_low [2021-11-21 00:12:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 00:12:34,893 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 00:12:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:12:34,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:12:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 00:12:34,893 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 00:12:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-21 00:12:34,894 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-21 00:12:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 00:12:34,894 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 00:12:34,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:12:34,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:12:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 00:12:34,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 00:12:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 00:12:34,898 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 00:12:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:12:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-21 00:12:34,898 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-21 00:12:34,899 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit [2021-11-21 00:12:34,899 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit [2021-11-21 00:12:34,899 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 00:12:34,900 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 00:12:34,900 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 00:12:34,900 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 00:12:34,900 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-21 00:12:34,900 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-21 00:12:34,900 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_rbufs [2021-11-21 00:12:34,901 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_rbufs [2021-11-21 00:12:34,901 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 00:12:34,901 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 00:12:34,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:12:34,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:12:34,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:12:34,901 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_interrupt [2021-11-21 00:12:34,902 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_interrupt [2021-11-21 00:12:34,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:12:34,902 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 00:12:34,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 00:12:34,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 00:12:34,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 00:12:34,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 00:12:34,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 00:12:34,903 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_disable [2021-11-21 00:12:34,903 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_disable [2021-11-21 00:12:34,904 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-11-21 00:12:34,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-11-21 00:12:34,904 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 00:12:34,904 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 00:12:34,905 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 00:12:34,905 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 00:12:34,906 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_carrier [2021-11-21 00:12:34,906 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_carrier [2021-11-21 00:12:34,906 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_shutdown [2021-11-21 00:12:34,906 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_shutdown [2021-11-21 00:12:34,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:12:34,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 00:12:34,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 00:12:34,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:12:34,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:12:34,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 00:12:34,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 00:12:34,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-21 00:12:34,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-21 00:12:34,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:12:34,909 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2021-11-21 00:12:34,909 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2021-11-21 00:12:34,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:12:34,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:12:34,910 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 00:12:34,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 00:12:34,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:12:34,911 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 00:12:34,912 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-21 00:12:34,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-21 00:12:34,916 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:12:34,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:12:34,916 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-21 00:12:34,916 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-21 00:12:34,917 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_rx_mode [2021-11-21 00:12:34,917 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_rx_mode [2021-11-21 00:12:34,917 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:12:34,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:12:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_rx_crc_and_missed_errord [2021-11-21 00:12:34,924 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_rx_crc_and_missed_errord [2021-11-21 00:12:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-21 00:12:34,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-21 00:12:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 00:12:34,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 00:12:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-21 00:12:34,924 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-21 00:12:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 00:12:34,925 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 00:12:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 00:12:34,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 00:12:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2021-11-21 00:12:34,925 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2021-11-21 00:12:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 00:12:34,925 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 00:12:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_power_init [2021-11-21 00:12:34,926 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_power_init [2021-11-21 00:12:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_tx_timeout [2021-11-21 00:12:34,926 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_tx_timeout [2021-11-21 00:12:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-21 00:12:34,926 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-21 00:12:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:12:34,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:12:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-21 00:12:34,927 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-21 00:12:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 00:12:34,927 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 00:12:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:12:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:12:34,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:12:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-21 00:12:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_chip_reset [2021-11-21 00:12:34,928 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_chip_reset [2021-11-21 00:12:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 00:12:34,928 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 00:12:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:12:34,928 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:12:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_cam_mask [2021-11-21 00:12:34,928 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_cam_mask [2021-11-21 00:12:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2021-11-21 00:12:34,929 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2021-11-21 00:12:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 00:12:34,929 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 00:12:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_remove_one [2021-11-21 00:12:34,929 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_remove_one [2021-11-21 00:12:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-21 00:12:34,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-21 00:12:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-21 00:12:34,930 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-21 00:12:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_close [2021-11-21 00:12:34,930 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_close [2021-11-21 00:12:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_task_lock_of_rhine_private [2021-11-21 00:12:34,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_task_lock_of_rhine_private [2021-11-21 00:12:34,930 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 00:12:34,931 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 00:12:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:12:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 00:12:34,931 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 00:12:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 00:12:34,931 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 00:12:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:12:34,931 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_check_media [2021-11-21 00:12:34,932 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_check_media [2021-11-21 00:12:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2021-11-21 00:12:34,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2021-11-21 00:12:34,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:12:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure free_rbufs [2021-11-21 00:12:34,934 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rbufs [2021-11-21 00:12:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_get_events [2021-11-21 00:12:34,934 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_get_events [2021-11-21 00:12:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 00:12:34,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 00:12:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-21 00:12:34,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-21 00:12:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure enable_mmio [2021-11-21 00:12:34,935 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_mmio [2021-11-21 00:12:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_vlan_cam_mask [2021-11-21 00:12:34,935 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_vlan_cam_mask [2021-11-21 00:12:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-21 00:12:34,936 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-21 00:12:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 00:12:34,936 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 00:12:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-21 00:12:34,936 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-21 00:12:34,936 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:12:34,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:12:34,937 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 00:12:34,937 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 00:12:34,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 00:12:34,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 00:12:34,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 00:12:34,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 00:12:34,937 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 00:12:34,938 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 00:12:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 00:12:34,938 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 00:12:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_disable_linkmon [2021-11-21 00:12:34,938 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_disable_linkmon [2021-11-21 00:12:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_ack_events [2021-11-21 00:12:34,938 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_ack_events [2021-11-21 00:12:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 00:12:34,939 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 00:12:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_resume [2021-11-21 00:12:34,939 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_resume [2021-11-21 00:12:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 00:12:34,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 00:12:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:12:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-21 00:12:34,939 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-21 00:12:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:12:34,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:12:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2021-11-21 00:12:34,940 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2021-11-21 00:12:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 00:12:34,940 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 00:12:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_task_lock_of_rhine_private [2021-11-21 00:12:34,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_task_lock_of_rhine_private [2021-11-21 00:12:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_high [2021-11-21 00:12:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_high [2021-11-21 00:12:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_irq_disable [2021-11-21 00:12:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_irq_disable [2021-11-21 00:12:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_enable [2021-11-21 00:12:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_enable [2021-11-21 00:12:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_tbufs [2021-11-21 00:12:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_tbufs [2021-11-21 00:12:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-21 00:12:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-21 00:12:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:12:34,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:12:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-21 00:12:34,949 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-21 00:12:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-21 00:12:34,949 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-21 00:12:34,950 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_enable_linkmon [2021-11-21 00:12:34,950 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_enable_linkmon [2021-11-21 00:12:34,950 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_vcam [2021-11-21 00:12:34,950 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_vcam [2021-11-21 00:12:34,950 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 00:12:34,950 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 00:12:34,950 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-21 00:12:34,950 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-21 00:12:34,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:12:34,951 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_suspend [2021-11-21 00:12:34,951 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_suspend [2021-11-21 00:12:34,951 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_open [2021-11-21 00:12:34,951 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_open [2021-11-21 00:12:34,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:12:34,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:12:36,214 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:12:36,223 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:12:36,533 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:21:59,476 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:21:59,555 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:22:04,799 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:22:04,799 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-21 00:22:04,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:22:04 BoogieIcfgContainer [2021-11-21 00:22:04,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:22:04,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:22:04,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:22:04,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:22:04,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:12:28" (1/3) ... [2021-11-21 00:22:04,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a57c697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:22:04, skipping insertion in model container [2021-11-21 00:22:04,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:33" (2/3) ... [2021-11-21 00:22:04,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a57c697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:22:04, skipping insertion in model container [2021-11-21 00:22:04,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:22:04" (3/3) ... [2021-11-21 00:22:04,823 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-21 00:22:04,828 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:22:04,829 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 00:22:04,904 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:22:04,909 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:22:04,909 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 00:22:04,984 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) [2021-11-21 00:22:05,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-21 00:22:05,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:22:05,008 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] [2021-11-21 00:22:05,009 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)] === [2021-11-21 00:22:05,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:22:05,013 INFO L85 PathProgramCache]: Analyzing trace with hash -191944831, now seen corresponding path program 1 times [2021-11-21 00:22:05,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:22:05,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496438996] [2021-11-21 00:22:05,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:22:05,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:22:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:22:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2021-11-21 00:22:06,629 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:22:06,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496438996] [2021-11-21 00:22:06,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496438996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:22:06,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:22:06,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:22:06,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953388172] [2021-11-21 00:22:06,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:22:06,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:22:06,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:22:06,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:22:06,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:22:06,684 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) [2021-11-21 00:22:08,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:22:14,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:22:14,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:22:14,660 INFO L93 Difference]: Finished difference Result 4816 states and 7130 transitions. [2021-11-21 00:22:14,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:22:14,671 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 [2021-11-21 00:22:14,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:22:14,721 INFO L225 Difference]: With dead ends: 4816 [2021-11-21 00:22:14,721 INFO L226 Difference]: Without dead ends: 3179 [2021-11-21 00:22:14,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:22:14,739 INFO L933 BasicCegarLoop]: 2570 mSDtfsCounter, 2268 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 4566 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:22:14,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2268 Valid, 4566 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 716 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2021-11-21 00:22:14,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2021-11-21 00:22:15,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 3175. [2021-11-21 00:22:15,016 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) [2021-11-21 00:22:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3175 states to 3175 states and 4589 transitions. [2021-11-21 00:22:15,050 INFO L78 Accepts]: Start accepts. Automaton has 3175 states and 4589 transitions. Word has length 165 [2021-11-21 00:22:15,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:22:15,052 INFO L470 AbstractCegarLoop]: Abstraction has 3175 states and 4589 transitions. [2021-11-21 00:22:15,052 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) [2021-11-21 00:22:15,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3175 states and 4589 transitions. [2021-11-21 00:22:15,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-21 00:22:15,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:22:15,059 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] [2021-11-21 00:22:15,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:22:15,060 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)] === [2021-11-21 00:22:15,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:22:15,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1365411271, now seen corresponding path program 1 times [2021-11-21 00:22:15,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:22:15,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852555915] [2021-11-21 00:22:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:22:15,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:22:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:22:16,057 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-21 00:22:16,059 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:22:16,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852555915] [2021-11-21 00:22:16,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852555915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:22:16,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:22:16,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:22:16,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280046152] [2021-11-21 00:22:16,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:22:16,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:22:16,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:22:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:22:16,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:22:16,067 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) [2021-11-21 00:22:18,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:22:23,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:22:23,645 INFO L93 Difference]: Finished difference Result 9107 states and 13133 transitions. [2021-11-21 00:22:23,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:22:23,646 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 [2021-11-21 00:22:23,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:22:23,702 INFO L225 Difference]: With dead ends: 9107 [2021-11-21 00:22:23,703 INFO L226 Difference]: Without dead ends: 5961 [2021-11-21 00:22:23,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:22:23,724 INFO L933 BasicCegarLoop]: 2539 mSDtfsCounter, 2001 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s 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, 7.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:22:23,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2001 Valid, 4496 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 783 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-21 00:22:23,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2021-11-21 00:22:24,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 5940. [2021-11-21 00:22:24,067 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) [2021-11-21 00:22:24,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 8510 transitions. [2021-11-21 00:22:24,112 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 8510 transitions. Word has length 165 [2021-11-21 00:22:24,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:22:24,113 INFO L470 AbstractCegarLoop]: Abstraction has 5940 states and 8510 transitions. [2021-11-21 00:22:24,114 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) [2021-11-21 00:22:24,114 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 8510 transitions. [2021-11-21 00:22:24,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-21 00:22:24,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:22:24,118 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] [2021-11-21 00:22:24,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:22:24,119 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)] === [2021-11-21 00:22:24,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:22:24,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2131269995, now seen corresponding path program 1 times [2021-11-21 00:22:24,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:22:24,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45187403] [2021-11-21 00:22:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:22:24,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:22:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:22:24,806 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-21 00:22:24,806 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:22:24,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45187403] [2021-11-21 00:22:24,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45187403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:22:24,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:22:24,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:22:24,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613133829] [2021-11-21 00:22:24,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:22:24,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:22:24,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:22:24,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:22:24,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:22:24,809 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) [2021-11-21 00:22:26,949 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:22:32,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:22:32,227 INFO L93 Difference]: Finished difference Result 16690 states and 23800 transitions. [2021-11-21 00:22:32,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:22:32,228 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 [2021-11-21 00:22:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:22:32,318 INFO L225 Difference]: With dead ends: 16690 [2021-11-21 00:22:32,319 INFO L226 Difference]: Without dead ends: 10779 [2021-11-21 00:22:32,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:22:32,349 INFO L933 BasicCegarLoop]: 2481 mSDtfsCounter, 1915 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s 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, 6.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:22:32,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1915 Valid, 4441 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 731 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-21 00:22:32,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10779 states. [2021-11-21 00:22:32,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10779 to 10754. [2021-11-21 00:22:32,909 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) [2021-11-21 00:22:32,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10754 states to 10754 states and 15288 transitions. [2021-11-21 00:22:32,977 INFO L78 Accepts]: Start accepts. Automaton has 10754 states and 15288 transitions. Word has length 166 [2021-11-21 00:22:32,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:22:32,979 INFO L470 AbstractCegarLoop]: Abstraction has 10754 states and 15288 transitions. [2021-11-21 00:22:32,980 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) [2021-11-21 00:22:32,980 INFO L276 IsEmpty]: Start isEmpty. Operand 10754 states and 15288 transitions. [2021-11-21 00:22:32,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-21 00:22:32,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:22:32,985 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] [2021-11-21 00:22:32,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:22:32,986 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)] === [2021-11-21 00:22:32,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:22:32,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1289738322, now seen corresponding path program 1 times [2021-11-21 00:22:32,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:22:32,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542596248] [2021-11-21 00:22:32,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:22:32,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:22:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:22:33,681 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-21 00:22:33,681 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:22:33,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542596248] [2021-11-21 00:22:33,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542596248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:22:33,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:22:33,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:22:33,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302787884] [2021-11-21 00:22:33,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:22:33,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:22:33,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:22:33,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:22:33,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:22:33,683 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) [2021-11-21 00:22:35,817 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:22:39,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:22:41,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:22:41,435 INFO L93 Difference]: Finished difference Result 22758 states and 32260 transitions. [2021-11-21 00:22:41,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:22:41,436 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 [2021-11-21 00:22:41,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:22:41,530 INFO L225 Difference]: With dead ends: 22758 [2021-11-21 00:22:41,531 INFO L226 Difference]: Without dead ends: 12033 [2021-11-21 00:22:41,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:22:41,587 INFO L933 BasicCegarLoop]: 2749 mSDtfsCounter, 1983 mSDsluCounter, 2305 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s 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, 7.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:22:41,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 4722 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 833 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-11-21 00:22:41,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12033 states. [2021-11-21 00:22:42,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12033 to 12010. [2021-11-21 00:22:42,446 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) [2021-11-21 00:22:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12010 states to 12010 states and 16902 transitions. [2021-11-21 00:22:42,518 INFO L78 Accepts]: Start accepts. Automaton has 12010 states and 16902 transitions. Word has length 176 [2021-11-21 00:22:42,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:22:42,522 INFO L470 AbstractCegarLoop]: Abstraction has 12010 states and 16902 transitions. [2021-11-21 00:22:42,523 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) [2021-11-21 00:22:42,523 INFO L276 IsEmpty]: Start isEmpty. Operand 12010 states and 16902 transitions. [2021-11-21 00:22:42,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-21 00:22:42,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:22:42,528 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] [2021-11-21 00:22:42,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:22:42,529 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)] === [2021-11-21 00:22:42,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:22:42,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1253162523, now seen corresponding path program 1 times [2021-11-21 00:22:42,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:22:42,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178373958] [2021-11-21 00:22:42,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:22:42,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:22:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:22:43,279 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2021-11-21 00:22:43,279 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:22:43,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178373958] [2021-11-21 00:22:43,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178373958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:22:43,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:22:43,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:22:43,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302009014] [2021-11-21 00:22:43,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:22:43,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:22:43,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:22:43,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:22:43,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:22:43,282 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) [2021-11-21 00:22:45,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:22:50,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:22:50,157 INFO L93 Difference]: Finished difference Result 33961 states and 47841 transitions. [2021-11-21 00:22:50,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:22:50,158 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 [2021-11-21 00:22:50,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:22:50,265 INFO L225 Difference]: With dead ends: 33961 [2021-11-21 00:22:50,265 INFO L226 Difference]: Without dead ends: 21980 [2021-11-21 00:22:50,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:22:50,319 INFO L933 BasicCegarLoop]: 2571 mSDtfsCounter, 2285 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s 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, 6.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:22:50,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2285 Valid, 4573 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 704 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-21 00:22:50,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21980 states. [2021-11-21 00:22:51,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21980 to 21947. [2021-11-21 00:22:51,507 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) [2021-11-21 00:22:51,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21947 states to 21947 states and 30909 transitions. [2021-11-21 00:22:51,614 INFO L78 Accepts]: Start accepts. Automaton has 21947 states and 30909 transitions. Word has length 177 [2021-11-21 00:22:51,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:22:51,615 INFO L470 AbstractCegarLoop]: Abstraction has 21947 states and 30909 transitions. [2021-11-21 00:22:51,615 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) [2021-11-21 00:22:51,616 INFO L276 IsEmpty]: Start isEmpty. Operand 21947 states and 30909 transitions. [2021-11-21 00:22:51,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-21 00:22:51,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:22:51,620 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] [2021-11-21 00:22:51,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:22:51,621 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)] === [2021-11-21 00:22:51,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:22:51,622 INFO L85 PathProgramCache]: Analyzing trace with hash 221818770, now seen corresponding path program 1 times [2021-11-21 00:22:51,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:22:51,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881200474] [2021-11-21 00:22:51,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:22:51,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:22:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:22:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2021-11-21 00:22:52,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:22:52,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881200474] [2021-11-21 00:22:52,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881200474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:22:52,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:22:52,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:22:52,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838509683] [2021-11-21 00:22:52,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:22:52,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:22:52,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:22:52,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:22:52,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:22:52,247 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) [2021-11-21 00:22:54,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:22:59,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:23:01,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:23:01,237 INFO L93 Difference]: Finished difference Result 60183 states and 84840 transitions. [2021-11-21 00:23:01,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:23:01,238 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 [2021-11-21 00:23:01,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:23:01,471 INFO L225 Difference]: With dead ends: 60183 [2021-11-21 00:23:01,471 INFO L226 Difference]: Without dead ends: 38265 [2021-11-21 00:23:01,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:23:01,558 INFO L933 BasicCegarLoop]: 2880 mSDtfsCounter, 2222 mSDsluCounter, 2320 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2222 SdHoareTripleChecker+Valid, 4865 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:23:01,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2222 Valid, 4865 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 809 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2021-11-21 00:23:01,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38265 states. [2021-11-21 00:23:03,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38265 to 38216. [2021-11-21 00:23:03,669 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) [2021-11-21 00:23:03,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38216 states to 38216 states and 53755 transitions. [2021-11-21 00:23:03,859 INFO L78 Accepts]: Start accepts. Automaton has 38216 states and 53755 transitions. Word has length 185 [2021-11-21 00:23:03,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:23:03,860 INFO L470 AbstractCegarLoop]: Abstraction has 38216 states and 53755 transitions. [2021-11-21 00:23:03,860 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) [2021-11-21 00:23:03,860 INFO L276 IsEmpty]: Start isEmpty. Operand 38216 states and 53755 transitions. [2021-11-21 00:23:03,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-21 00:23:03,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:23:03,866 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] [2021-11-21 00:23:03,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:23:03,867 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)] === [2021-11-21 00:23:03,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:23:03,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1351001441, now seen corresponding path program 1 times [2021-11-21 00:23:03,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:23:03,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481809347] [2021-11-21 00:23:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:23:03,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:23:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:23:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2021-11-21 00:23:05,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:23:05,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481809347] [2021-11-21 00:23:05,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481809347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:23:05,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:23:05,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:23:05,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920249261] [2021-11-21 00:23:05,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:23:05,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:23:05,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:23:05,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:23:05,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:23:05,226 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) [2021-11-21 00:23:07,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:23:15,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:23:15,048 INFO L93 Difference]: Finished difference Result 38222 states and 53760 transitions. [2021-11-21 00:23:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:23:15,049 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 [2021-11-21 00:23:15,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:23:15,209 INFO L225 Difference]: With dead ends: 38222 [2021-11-21 00:23:15,210 INFO L226 Difference]: Without dead ends: 38220 [2021-11-21 00:23:15,228 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 [2021-11-21 00:23:15,228 INFO L933 BasicCegarLoop]: 2007 mSDtfsCounter, 2305 mSDsluCounter, 4701 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s 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, 8.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:23:15,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2308 Valid, 6016 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1049 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2021-11-21 00:23:15,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38220 states. [2021-11-21 00:23:17,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38220 to 38220. [2021-11-21 00:23:17,072 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) [2021-11-21 00:23:17,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38220 states to 38220 states and 53758 transitions. [2021-11-21 00:23:17,277 INFO L78 Accepts]: Start accepts. Automaton has 38220 states and 53758 transitions. Word has length 209 [2021-11-21 00:23:17,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:23:17,279 INFO L470 AbstractCegarLoop]: Abstraction has 38220 states and 53758 transitions. [2021-11-21 00:23:17,279 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) [2021-11-21 00:23:17,279 INFO L276 IsEmpty]: Start isEmpty. Operand 38220 states and 53758 transitions. [2021-11-21 00:23:17,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-21 00:23:17,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:23:17,286 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] [2021-11-21 00:23:17,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:23:17,287 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)] === [2021-11-21 00:23:17,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:23:17,288 INFO L85 PathProgramCache]: Analyzing trace with hash -498710804, now seen corresponding path program 1 times [2021-11-21 00:23:17,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:23:17,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536874467] [2021-11-21 00:23:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:23:17,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:23:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:23:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 881 trivial. 0 not checked. [2021-11-21 00:23:18,149 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:23:18,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536874467] [2021-11-21 00:23:18,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536874467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:23:18,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:23:18,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:23:18,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854191426] [2021-11-21 00:23:18,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:23:18,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:23:18,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:23:18,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:23:18,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:23:18,152 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) [2021-11-21 00:23:20,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:23:27,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:23:28,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:23:28,673 INFO L93 Difference]: Finished difference Result 38226 states and 53763 transitions. [2021-11-21 00:23:28,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:23:28,674 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 [2021-11-21 00:23:28,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:23:28,830 INFO L225 Difference]: With dead ends: 38226 [2021-11-21 00:23:28,830 INFO L226 Difference]: Without dead ends: 38224 [2021-11-21 00:23:28,847 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 [2021-11-21 00:23:28,848 INFO L933 BasicCegarLoop]: 2010 mSDtfsCounter, 2301 mSDsluCounter, 4701 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s 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, 9.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:23:28,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2303 Valid, 6019 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1049 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2021-11-21 00:23:28,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38224 states. [2021-11-21 00:23:30,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38224 to 38224. [2021-11-21 00:23:30,576 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) [2021-11-21 00:23:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38224 states to 38224 states and 53761 transitions. [2021-11-21 00:23:30,707 INFO L78 Accepts]: Start accepts. Automaton has 38224 states and 53761 transitions. Word has length 212 [2021-11-21 00:23:30,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:23:30,708 INFO L470 AbstractCegarLoop]: Abstraction has 38224 states and 53761 transitions. [2021-11-21 00:23:30,708 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) [2021-11-21 00:23:30,708 INFO L276 IsEmpty]: Start isEmpty. Operand 38224 states and 53761 transitions. [2021-11-21 00:23:30,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-21 00:23:30,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:23:30,715 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] [2021-11-21 00:23:30,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:23:30,715 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)] === [2021-11-21 00:23:30,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:23:30,716 INFO L85 PathProgramCache]: Analyzing trace with hash 414839932, now seen corresponding path program 1 times [2021-11-21 00:23:30,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:23:30,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821306281] [2021-11-21 00:23:30,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:23:30,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:23:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:23:31,489 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2021-11-21 00:23:31,489 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:23:31,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821306281] [2021-11-21 00:23:31,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821306281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:23:31,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:23:31,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:23:31,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968613802] [2021-11-21 00:23:31,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:23:31,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:23:31,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:23:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:23:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:23:31,492 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) [2021-11-21 00:23:33,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:23:41,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:23:41,016 INFO L93 Difference]: Finished difference Result 38230 states and 53766 transitions. [2021-11-21 00:23:41,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:23:41,017 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 [2021-11-21 00:23:41,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:23:41,174 INFO L225 Difference]: With dead ends: 38230 [2021-11-21 00:23:41,174 INFO L226 Difference]: Without dead ends: 38226 [2021-11-21 00:23:41,194 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 [2021-11-21 00:23:41,194 INFO L933 BasicCegarLoop]: 2010 mSDtfsCounter, 2300 mSDsluCounter, 4701 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 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, 8.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:23:41,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2301 Valid, 6019 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1049 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2021-11-21 00:23:41,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38226 states. [2021-11-21 00:23:42,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38226 to 38226. [2021-11-21 00:23:42,760 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) [2021-11-21 00:23:42,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38226 states to 38226 states and 53762 transitions. [2021-11-21 00:23:42,887 INFO L78 Accepts]: Start accepts. Automaton has 38226 states and 53762 transitions. Word has length 218 [2021-11-21 00:23:42,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:23:42,888 INFO L470 AbstractCegarLoop]: Abstraction has 38226 states and 53762 transitions. [2021-11-21 00:23:42,889 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) [2021-11-21 00:23:42,889 INFO L276 IsEmpty]: Start isEmpty. Operand 38226 states and 53762 transitions. [2021-11-21 00:23:42,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-21 00:23:42,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:23:42,897 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] [2021-11-21 00:23:42,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:23:42,898 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)] === [2021-11-21 00:23:42,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:23:42,899 INFO L85 PathProgramCache]: Analyzing trace with hash 520786508, now seen corresponding path program 1 times [2021-11-21 00:23:42,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:23:42,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797752138] [2021-11-21 00:23:42,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:23:42,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:23:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:23:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2021-11-21 00:23:44,004 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:23:44,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797752138] [2021-11-21 00:23:44,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797752138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:23:44,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:23:44,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:23:44,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648282873] [2021-11-21 00:23:44,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:23:44,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:23:44,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:23:44,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:23:44,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:23:44,007 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) [2021-11-21 00:23:46,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:23:52,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:23:54,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:23:54,499 INFO L93 Difference]: Finished difference Result 43742 states and 60759 transitions. [2021-11-21 00:23:54,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:23:54,500 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 [2021-11-21 00:23:54,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:23:54,674 INFO L225 Difference]: With dead ends: 43742 [2021-11-21 00:23:54,674 INFO L226 Difference]: Without dead ends: 43463 [2021-11-21 00:23:54,696 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 [2021-11-21 00:23:54,697 INFO L933 BasicCegarLoop]: 2222 mSDtfsCounter, 2162 mSDsluCounter, 5731 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s 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, 9.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:23:54,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2162 Valid, 7143 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1186 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2021-11-21 00:23:54,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43463 states. [2021-11-21 00:23:56,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43463 to 43463. [2021-11-21 00:23:56,536 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) [2021-11-21 00:23:56,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43463 states to 43463 states and 60209 transitions. [2021-11-21 00:23:56,869 INFO L78 Accepts]: Start accepts. Automaton has 43463 states and 60209 transitions. Word has length 222 [2021-11-21 00:23:56,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:23:56,869 INFO L470 AbstractCegarLoop]: Abstraction has 43463 states and 60209 transitions. [2021-11-21 00:23:56,870 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) [2021-11-21 00:23:56,871 INFO L276 IsEmpty]: Start isEmpty. Operand 43463 states and 60209 transitions. [2021-11-21 00:23:56,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-21 00:23:56,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:23:56,877 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] [2021-11-21 00:23:56,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:23:56,877 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)] === [2021-11-21 00:23:56,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:23:56,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1061686274, now seen corresponding path program 1 times [2021-11-21 00:23:56,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:23:56,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037869774] [2021-11-21 00:23:56,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:23:56,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:23:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:23:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-11-21 00:23:57,486 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:23:57,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037869774] [2021-11-21 00:23:57,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037869774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:23:57,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:23:57,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:23:57,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710968436] [2021-11-21 00:23:57,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:23:57,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:23:57,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:23:57,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:23:57,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:23:57,489 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) [2021-11-21 00:23:59,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:24:06,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:06,737 INFO L93 Difference]: Finished difference Result 106067 states and 146989 transitions. [2021-11-21 00:24:06,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:24:06,738 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 [2021-11-21 00:24:06,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:06,967 INFO L225 Difference]: With dead ends: 106067 [2021-11-21 00:24:06,967 INFO L226 Difference]: Without dead ends: 62775 [2021-11-21 00:24:07,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:24:07,214 INFO L933 BasicCegarLoop]: 2796 mSDtfsCounter, 1951 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s 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, 7.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:07,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1951 Valid, 4735 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 854 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-21 00:24:07,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62775 states. [2021-11-21 00:24:10,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62775 to 62755. [2021-11-21 00:24:10,077 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) [2021-11-21 00:24:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62755 states to 62755 states and 86724 transitions. [2021-11-21 00:24:10,353 INFO L78 Accepts]: Start accepts. Automaton has 62755 states and 86724 transitions. Word has length 225 [2021-11-21 00:24:10,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:10,354 INFO L470 AbstractCegarLoop]: Abstraction has 62755 states and 86724 transitions. [2021-11-21 00:24:10,354 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) [2021-11-21 00:24:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 62755 states and 86724 transitions. [2021-11-21 00:24:10,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-21 00:24:10,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:10,363 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] [2021-11-21 00:24:10,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:24:10,364 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)] === [2021-11-21 00:24:10,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:10,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1509852030, now seen corresponding path program 1 times [2021-11-21 00:24:10,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:10,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478901945] [2021-11-21 00:24:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:10,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:11,355 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2021-11-21 00:24:11,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:11,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478901945] [2021-11-21 00:24:11,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478901945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:11,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:11,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:24:11,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029716493] [2021-11-21 00:24:11,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:11,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:24:11,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:11,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:24:11,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:24:11,357 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) [2021-11-21 00:24:13,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:24:22,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:22,565 INFO L93 Difference]: Finished difference Result 155459 states and 214908 transitions. [2021-11-21 00:24:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:24:22,566 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 [2021-11-21 00:24:22,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:23,105 INFO L225 Difference]: With dead ends: 155459 [2021-11-21 00:24:23,105 INFO L226 Difference]: Without dead ends: 92875 [2021-11-21 00:24:23,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:24:23,253 INFO L933 BasicCegarLoop]: 3901 mSDtfsCounter, 2253 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s 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, 7.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:23,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2253 Valid, 5871 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1038 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2021-11-21 00:24:23,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92875 states.