./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-can-mcp251x.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_9e313b19-1e3d-4195-8973-54e23f876ee5/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/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_9e313b19-1e3d-4195-8973-54e23f876ee5/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/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-can-mcp251x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/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_9e313b19-1e3d-4195-8973-54e23f876ee5/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 34736e16fed7ff8cc88604084fa777d707e75948c95ce657a43a86ad92782d71 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:49:16,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:49:16,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:49:16,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:49:16,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:49:16,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:49:16,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:49:16,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:49:16,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:49:16,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:49:16,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:49:16,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:49:16,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:49:16,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:49:16,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:49:16,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:49:16,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:49:16,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:49:16,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:49:16,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:49:16,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:49:16,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:49:16,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:49:16,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:49:16,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:49:16,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:49:16,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:49:16,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:49:16,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:49:16,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:49:16,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:49:16,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:49:16,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:49:16,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:49:16,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:49:16,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:49:16,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:49:16,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:49:16,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:49:16,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:49:16,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:49:16,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:49:16,289 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:49:16,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:49:16,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:49:16,290 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:49:16,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:49:16,291 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:49:16,291 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:49:16,291 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:49:16,292 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:49:16,292 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:49:16,293 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:49:16,293 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:49:16,293 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:49:16,294 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:49:16,294 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:49:16,294 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:49:16,294 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:49:16,295 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:49:16,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:49:16,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:49:16,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:49:16,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:49:16,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:49:16,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:49:16,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:49:16,297 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:49:16,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:49:16,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:49:16,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:49:16,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:49:16,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:49:16,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:49:16,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:49:16,300 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:49:16,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:49:16,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:49:16,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:49:16,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:49:16,301 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_9e313b19-1e3d-4195-8973-54e23f876ee5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34736e16fed7ff8cc88604084fa777d707e75948c95ce657a43a86ad92782d71 [2021-11-21 01:49:16,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:49:16,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:49:16,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:49:16,590 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:49:16,591 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:49:16,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2021-11-21 01:49:16,684 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/bin/utaipan-TEXQjIfE4P/data/1054d128f/c01d39d142144ed293fc875cf28feb45/FLAGe16b20ae6 [2021-11-21 01:49:17,677 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:49:17,677 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2021-11-21 01:49:17,738 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/bin/utaipan-TEXQjIfE4P/data/1054d128f/c01d39d142144ed293fc875cf28feb45/FLAGe16b20ae6 [2021-11-21 01:49:18,063 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/bin/utaipan-TEXQjIfE4P/data/1054d128f/c01d39d142144ed293fc875cf28feb45 [2021-11-21 01:49:18,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:49:18,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:49:18,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:49:18,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:49:18,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:49:18,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:18" (1/1) ... [2021-11-21 01:49:18,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60836ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:18, skipping insertion in model container [2021-11-21 01:49:18,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:18" (1/1) ... [2021-11-21 01:49:18,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:49:18,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:49:20,638 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_9e313b19-1e3d-4195-8973-54e23f876ee5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278128,278141] [2021-11-21 01:49:20,641 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_9e313b19-1e3d-4195-8973-54e23f876ee5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278294,278307] [2021-11-21 01:49:20,642 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_9e313b19-1e3d-4195-8973-54e23f876ee5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278458,278471] [2021-11-21 01:49:20,643 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_9e313b19-1e3d-4195-8973-54e23f876ee5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278623,278636] [2021-11-21 01:49:20,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:49:20,714 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:49:21,124 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_9e313b19-1e3d-4195-8973-54e23f876ee5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278128,278141] [2021-11-21 01:49:21,125 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_9e313b19-1e3d-4195-8973-54e23f876ee5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278294,278307] [2021-11-21 01:49:21,125 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_9e313b19-1e3d-4195-8973-54e23f876ee5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278458,278471] [2021-11-21 01:49:21,125 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_9e313b19-1e3d-4195-8973-54e23f876ee5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278623,278636] [2021-11-21 01:49:21,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:49:21,311 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:49:21,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:21 WrapperNode [2021-11-21 01:49:21,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:49:21,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:49:21,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:49:21,314 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:49:21,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:21" (1/1) ... [2021-11-21 01:49:21,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:21" (1/1) ... [2021-11-21 01:49:21,623 INFO L137 Inliner]: procedures = 340, calls = 1497, calls flagged for inlining = 194, calls inlined = 177, statements flattened = 4027 [2021-11-21 01:49:21,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:49:21,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:49:21,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:49:21,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:49:21,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:21" (1/1) ... [2021-11-21 01:49:21,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:21" (1/1) ... [2021-11-21 01:49:21,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:21" (1/1) ... [2021-11-21 01:49:21,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:21" (1/1) ... [2021-11-21 01:49:21,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:21" (1/1) ... [2021-11-21 01:49:21,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:21" (1/1) ... [2021-11-21 01:49:21,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:21" (1/1) ... [2021-11-21 01:49:21,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:49:21,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:49:21,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:49:21,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:49:21,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:21" (1/1) ... [2021-11-21 01:49:21,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:49:21,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:21,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:49:21,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:49:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:49:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:49:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:49:21,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:49:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:49:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:49:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 01:49:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 01:49:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2021-11-21 01:49:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2021-11-21 01:49:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:49:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:49:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open_clean [2021-11-21 01:49:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open_clean [2021-11-21 01:49:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 01:49:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 01:49:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure devm_regulator_get [2021-11-21 01:49:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_regulator_get [2021-11-21 01:49:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_spi_trans [2021-11-21 01:49:21,988 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_spi_trans [2021-11-21 01:49:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2021-11-21 01:49:21,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2021-11-21 01:49:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-21 01:49:21,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-21 01:49:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_read_reg [2021-11-21 01:49:21,989 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_read_reg [2021-11-21 01:49:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:49:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:49:21,989 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:49:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:49:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:49:21,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:49:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_stop [2021-11-21 01:49:21,990 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_stop [2021-11-21 01:49:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_bits [2021-11-21 01:49:21,990 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_bits [2021-11-21 01:49:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:49:21,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:49:21,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 01:49:21,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 01:49:21,991 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx_ni [2021-11-21 01:49:21,991 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx_ni [2021-11-21 01:49:21,991 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2021-11-21 01:49:21,991 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2021-11-21 01:49:21,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:49:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:49:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2021-11-21 01:49:21,992 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2021-11-21 01:49:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-21 01:49:21,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-21 01:49:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:49:21,992 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:49:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:49:21,993 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:49:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2021-11-21 01:49:21,993 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2021-11-21 01:49:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:49:21,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:49:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 01:49:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 01:49:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2021-11-21 01:49:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2021-11-21 01:49:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure clk_disable_unprepare [2021-11-21 01:49:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_disable_unprepare [2021-11-21 01:49:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 01:49:21,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 01:49:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-21 01:49:21,995 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-21 01:49:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure clk_unprepare [2021-11-21 01:49:21,995 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_unprepare [2021-11-21 01:49:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:49:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_set_normal_mode [2021-11-21 01:49:21,995 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_set_normal_mode [2021-11-21 01:49:21,996 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:49:21,996 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:49:21,996 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_remove [2021-11-21 01:49:21,996 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_remove [2021-11-21 01:49:21,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:49:21,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:49:21,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:49:21,996 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_error_skb [2021-11-21 01:49:21,997 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_error_skb [2021-11-21 01:49:21,997 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_sleep [2021-11-21 01:49:21,997 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_sleep [2021-11-21 01:49:21,997 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-21 01:49:21,997 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-21 01:49:21,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:49:21,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 01:49:21,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 01:49:21,998 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_clean [2021-11-21 01:49:21,998 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_clean [2021-11-21 01:49:21,998 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2021-11-21 01:49:21,998 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2021-11-21 01:49:21,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:49:21,998 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:49:21,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:49:21,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:49:21,999 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_power_enable [2021-11-21 01:49:21,999 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_power_enable [2021-11-21 01:49:21,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 01:49:21,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 01:49:21,999 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_suspend [2021-11-21 01:49:21,999 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_suspend [2021-11-21 01:49:22,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:49:22,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mcp_lock_of_mcp251x_priv [2021-11-21 01:49:22,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mcp_lock_of_mcp251x_priv [2021-11-21 01:49:22,000 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open [2021-11-21 01:49:22,000 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open [2021-11-21 01:49:22,000 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_probe [2021-11-21 01:49:22,000 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_probe [2021-11-21 01:49:22,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mcp_lock_of_mcp251x_priv [2021-11-21 01:49:22,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mcp_lock_of_mcp251x_priv [2021-11-21 01:49:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:49:22,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:49:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_resume [2021-11-21 01:49:22,001 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_resume [2021-11-21 01:49:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:49:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:49:22,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:49:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:49:22,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:49:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-21 01:49:22,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-21 01:49:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-21 01:49:22,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-21 01:49:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_reset [2021-11-21 01:49:22,002 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_reset [2021-11-21 01:49:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:49:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:49:22,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:49:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:49:22,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:49:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:49:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2021-11-21 01:49:22,003 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2021-11-21 01:49:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:49:22,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:49:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:49:22,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:49:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2021-11-21 01:49:22,004 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2021-11-21 01:49:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-21 01:49:22,005 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-21 01:49:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_setup [2021-11-21 01:49:22,005 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_setup [2021-11-21 01:49:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:49:22,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:49:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2021-11-21 01:49:22,005 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2021-11-21 01:49:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 01:49:22,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 01:49:22,006 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:49:22,006 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:49:22,006 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_rx [2021-11-21 01:49:22,006 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_rx [2021-11-21 01:49:22,006 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_is_2510 [2021-11-21 01:49:22,006 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_is_2510 [2021-11-21 01:49:22,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:49:22,007 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2021-11-21 01:49:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2021-11-21 01:49:22,007 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_reg [2021-11-21 01:49:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_reg [2021-11-21 01:49:22,007 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-21 01:49:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-21 01:49:22,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:49:22,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:49:22,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:49:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:49:22,008 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 01:49:22,008 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 01:49:22,919 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:49:22,924 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:49:23,419 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:50:09,938 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:50:11,003 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:50:12,944 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:50:12,945 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:50:12,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:50:12 BoogieIcfgContainer [2021-11-21 01:50:12,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:50:12,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:50:12,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:50:12,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:50:12,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:49:18" (1/3) ... [2021-11-21 01:50:12,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383044f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:50:12, skipping insertion in model container [2021-11-21 01:50:12,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:21" (2/3) ... [2021-11-21 01:50:12,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383044f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:50:12, skipping insertion in model container [2021-11-21 01:50:12,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:50:12" (3/3) ... [2021-11-21 01:50:12,960 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2021-11-21 01:50:12,969 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:50:12,969 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 01:50:13,037 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:50:13,054 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 01:50:13,054 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 01:50:13,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 1104 states, 666 states have (on average 1.3273273273273274) internal successors, (884), 689 states have internal predecessors, (884), 359 states have call successors, (359), 77 states have call predecessors, (359), 76 states have return successors, (350), 344 states have call predecessors, (350), 350 states have call successors, (350) [2021-11-21 01:50:13,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-21 01:50:13,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:13,141 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:13,143 INFO L402 AbstractCegarLoop]: === Iteration 1 === 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:50:13,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:13,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1836371569, now seen corresponding path program 1 times [2021-11-21 01:50:13,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:13,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396965879] [2021-11-21 01:50:13,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:13,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:14,159 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-11-21 01:50:14,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:14,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396965879] [2021-11-21 01:50:14,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396965879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:14,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:14,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:50:14,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19526370] [2021-11-21 01:50:14,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:14,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:50:14,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:14,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:50:14,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:14,212 INFO L87 Difference]: Start difference. First operand has 1104 states, 666 states have (on average 1.3273273273273274) internal successors, (884), 689 states have internal predecessors, (884), 359 states have call successors, (359), 77 states have call predecessors, (359), 76 states have return successors, (350), 344 states have call predecessors, (350), 350 states have call successors, (350) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-21 01:50:16,319 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:19,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:19,208 INFO L93 Difference]: Finished difference Result 3134 states and 4649 transitions. [2021-11-21 01:50:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:50:19,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 131 [2021-11-21 01:50:19,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:19,250 INFO L225 Difference]: With dead ends: 3134 [2021-11-21 01:50:19,250 INFO L226 Difference]: Without dead ends: 2035 [2021-11-21 01:50:19,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:19,267 INFO L933 BasicCegarLoop]: 1675 mSDtfsCounter, 1437 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:19,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1437 Valid, 2991 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 489 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-21 01:50:19,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2021-11-21 01:50:19,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2016. [2021-11-21 01:50:19,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1227 states have (on average 1.321923390383048) internal successors, (1622), 1272 states have internal predecessors, (1622), 641 states have call successors, (641), 149 states have call predecessors, (641), 145 states have return successors, (679), 617 states have call predecessors, (679), 637 states have call successors, (679) [2021-11-21 01:50:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2942 transitions. [2021-11-21 01:50:19,490 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2942 transitions. Word has length 131 [2021-11-21 01:50:19,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:19,492 INFO L470 AbstractCegarLoop]: Abstraction has 2016 states and 2942 transitions. [2021-11-21 01:50:19,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-21 01:50:19,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2942 transitions. [2021-11-21 01:50:19,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-21 01:50:19,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:19,497 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 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] [2021-11-21 01:50:19,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:50:19,497 INFO L402 AbstractCegarLoop]: === Iteration 2 === 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:50:19,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:19,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1104741546, now seen corresponding path program 1 times [2021-11-21 01:50:19,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:19,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632009895] [2021-11-21 01:50:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:19,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:19,855 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2021-11-21 01:50:19,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:19,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632009895] [2021-11-21 01:50:19,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632009895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:19,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:19,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:50:19,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766281346] [2021-11-21 01:50:19,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:19,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:50:19,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:19,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:50:19,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:19,865 INFO L87 Difference]: Start difference. First operand 2016 states and 2942 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-21 01:50:21,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:25,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:25,312 INFO L93 Difference]: Finished difference Result 5915 states and 8631 transitions. [2021-11-21 01:50:25,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:50:25,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2021-11-21 01:50:25,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:25,354 INFO L225 Difference]: With dead ends: 5915 [2021-11-21 01:50:25,355 INFO L226 Difference]: Without dead ends: 3922 [2021-11-21 01:50:25,368 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 01:50:25,370 INFO L933 BasicCegarLoop]: 1632 mSDtfsCounter, 1464 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:25,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 2911 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 508 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2021-11-21 01:50:25,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2021-11-21 01:50:25,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3918. [2021-11-21 01:50:25,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3918 states, 2402 states have (on average 1.3201498751040799) internal successors, (3171), 2484 states have internal predecessors, (3171), 1226 states have call successors, (1226), 294 states have call predecessors, (1226), 287 states have return successors, (1306), 1185 states have call predecessors, (1306), 1222 states have call successors, (1306) [2021-11-21 01:50:25,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3918 states to 3918 states and 5703 transitions. [2021-11-21 01:50:25,706 INFO L78 Accepts]: Start accepts. Automaton has 3918 states and 5703 transitions. Word has length 135 [2021-11-21 01:50:25,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:25,707 INFO L470 AbstractCegarLoop]: Abstraction has 3918 states and 5703 transitions. [2021-11-21 01:50:25,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-21 01:50:25,707 INFO L276 IsEmpty]: Start isEmpty. Operand 3918 states and 5703 transitions. [2021-11-21 01:50:25,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-21 01:50:25,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:25,710 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:25,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:50:25,711 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:50:25,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:25,712 INFO L85 PathProgramCache]: Analyzing trace with hash -532134367, now seen corresponding path program 1 times [2021-11-21 01:50:25,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:25,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695107894] [2021-11-21 01:50:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:25,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-11-21 01:50:26,088 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:26,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695107894] [2021-11-21 01:50:26,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695107894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:26,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:26,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:50:26,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273307912] [2021-11-21 01:50:26,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:26,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:50:26,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:26,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:50:26,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:26,090 INFO L87 Difference]: Start difference. First operand 3918 states and 5703 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-21 01:50:28,154 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:31,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:31,766 INFO L93 Difference]: Finished difference Result 11272 states and 16329 transitions. [2021-11-21 01:50:31,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:50:31,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2021-11-21 01:50:31,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:31,833 INFO L225 Difference]: With dead ends: 11272 [2021-11-21 01:50:31,834 INFO L226 Difference]: Without dead ends: 7377 [2021-11-21 01:50:31,862 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 01:50:31,865 INFO L933 BasicCegarLoop]: 1734 mSDtfsCounter, 1324 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:31,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1324 Valid, 2997 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 590 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-21 01:50:31,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7377 states. [2021-11-21 01:50:32,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7377 to 7352. [2021-11-21 01:50:32,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 4474 states have (on average 1.2988377291014752) internal successors, (5811), 4644 states have internal predecessors, (5811), 2306 states have call successors, (2306), 582 states have call predecessors, (2306), 569 states have return successors, (2406), 2217 states have call predecessors, (2406), 2302 states have call successors, (2406) [2021-11-21 01:50:32,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 10523 transitions. [2021-11-21 01:50:32,334 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 10523 transitions. Word has length 133 [2021-11-21 01:50:32,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:32,334 INFO L470 AbstractCegarLoop]: Abstraction has 7352 states and 10523 transitions. [2021-11-21 01:50:32,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-21 01:50:32,335 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 10523 transitions. [2021-11-21 01:50:32,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-21 01:50:32,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:32,341 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:32,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:50:32,341 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:50:32,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:32,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1949411335, now seen corresponding path program 1 times [2021-11-21 01:50:32,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:32,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671608463] [2021-11-21 01:50:32,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:32,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-11-21 01:50:32,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:32,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671608463] [2021-11-21 01:50:32,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671608463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:32,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:32,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:50:32,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695636717] [2021-11-21 01:50:32,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:32,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:50:32,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:32,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:50:32,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:32,794 INFO L87 Difference]: Start difference. First operand 7352 states and 10523 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-21 01:50:34,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:38,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:38,440 INFO L93 Difference]: Finished difference Result 17756 states and 25319 transitions. [2021-11-21 01:50:38,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:50:38,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2021-11-21 01:50:38,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:38,546 INFO L225 Difference]: With dead ends: 17756 [2021-11-21 01:50:38,546 INFO L226 Difference]: Without dead ends: 10427 [2021-11-21 01:50:38,595 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 01:50:38,599 INFO L933 BasicCegarLoop]: 1634 mSDtfsCounter, 1418 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:38,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1418 Valid, 2924 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 520 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-21 01:50:38,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10427 states. [2021-11-21 01:50:39,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10427 to 10402. [2021-11-21 01:50:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10402 states, 6318 states have (on average 1.2841088952200064) internal successors, (8113), 6566 states have internal predecessors, (8113), 3234 states have call successors, (3234), 866 states have call predecessors, (3234), 847 states have return successors, (3378), 3091 states have call predecessors, (3378), 3230 states have call successors, (3378) [2021-11-21 01:50:39,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10402 states to 10402 states and 14725 transitions. [2021-11-21 01:50:39,264 INFO L78 Accepts]: Start accepts. Automaton has 10402 states and 14725 transitions. Word has length 134 [2021-11-21 01:50:39,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:39,266 INFO L470 AbstractCegarLoop]: Abstraction has 10402 states and 14725 transitions. [2021-11-21 01:50:39,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-21 01:50:39,272 INFO L276 IsEmpty]: Start isEmpty. Operand 10402 states and 14725 transitions. [2021-11-21 01:50:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-21 01:50:39,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:39,276 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:39,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:50:39,277 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:50:39,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:39,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1156232625, now seen corresponding path program 1 times [2021-11-21 01:50:39,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:39,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78582714] [2021-11-21 01:50:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:39,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:39,800 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-11-21 01:50:39,801 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:39,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78582714] [2021-11-21 01:50:39,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78582714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:39,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:39,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:50:39,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789310743] [2021-11-21 01:50:39,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:39,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:50:39,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:39,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:50:39,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:50:39,803 INFO L87 Difference]: Start difference. First operand 10402 states and 14725 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 01:50:41,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:54,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:54,029 INFO L93 Difference]: Finished difference Result 41025 states and 58566 transitions. [2021-11-21 01:50:54,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:50:54,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2021-11-21 01:50:54,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:54,242 INFO L225 Difference]: With dead ends: 41025 [2021-11-21 01:50:54,243 INFO L226 Difference]: Without dead ends: 30646 [2021-11-21 01:50:54,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:50:54,311 INFO L933 BasicCegarLoop]: 2020 mSDtfsCounter, 5906 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 2103 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6002 SdHoareTripleChecker+Valid, 4493 SdHoareTripleChecker+Invalid, 4043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2103 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:54,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6002 Valid, 4493 Invalid, 4043 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2103 Valid, 1939 Invalid, 1 Unknown, 0 Unchecked, 13.1s Time] [2021-11-21 01:50:54,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30646 states. [2021-11-21 01:50:56,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30646 to 30274. [2021-11-21 01:50:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30274 states, 18354 states have (on average 1.2828266317968835) internal successors, (23545), 19166 states have internal predecessors, (23545), 9426 states have call successors, (9426), 2570 states have call predecessors, (9426), 2491 states have return successors, (10386), 8903 states have call predecessors, (10386), 9422 states have call successors, (10386) [2021-11-21 01:50:56,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30274 states to 30274 states and 43357 transitions. [2021-11-21 01:50:56,227 INFO L78 Accepts]: Start accepts. Automaton has 30274 states and 43357 transitions. Word has length 140 [2021-11-21 01:50:56,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:56,228 INFO L470 AbstractCegarLoop]: Abstraction has 30274 states and 43357 transitions. [2021-11-21 01:50:56,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 01:50:56,228 INFO L276 IsEmpty]: Start isEmpty. Operand 30274 states and 43357 transitions. [2021-11-21 01:50:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-21 01:50:56,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:56,234 INFO L514 BasicCegarLoop]: trace histogram [13, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:56,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:50:56,235 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:50:56,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:56,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1329762001, now seen corresponding path program 1 times [2021-11-21 01:50:56,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:56,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785368946] [2021-11-21 01:50:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:56,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2021-11-21 01:50:56,515 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:56,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785368946] [2021-11-21 01:50:56,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785368946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:56,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:56,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:50:56,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925223859] [2021-11-21 01:50:56,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:56,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:50:56,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:56,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:50:56,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:56,517 INFO L87 Difference]: Start difference. First operand 30274 states and 43357 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 01:50:58,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:02,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:02,989 INFO L93 Difference]: Finished difference Result 72990 states and 104276 transitions. [2021-11-21 01:51:02,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:51:02,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 153 [2021-11-21 01:51:02,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:03,419 INFO L225 Difference]: With dead ends: 72990 [2021-11-21 01:51:03,419 INFO L226 Difference]: Without dead ends: 42739 [2021-11-21 01:51:03,520 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 01:51:03,521 INFO L933 BasicCegarLoop]: 1792 mSDtfsCounter, 1433 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:03,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1433 Valid, 3083 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 580 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-21 01:51:03,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42739 states. [2021-11-21 01:51:05,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42739 to 42674. [2021-11-21 01:51:05,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42674 states, 25978 states have (on average 1.277850488875202) internal successors, (33196), 27195 states have internal predecessors, (33196), 13104 states have call successors, (13104), 3693 states have call predecessors, (13104), 3589 states have return successors, (14288), 12326 states have call predecessors, (14288), 13100 states have call successors, (14288) [2021-11-21 01:51:06,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42674 states to 42674 states and 60588 transitions. [2021-11-21 01:51:06,143 INFO L78 Accepts]: Start accepts. Automaton has 42674 states and 60588 transitions. Word has length 153 [2021-11-21 01:51:06,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:06,144 INFO L470 AbstractCegarLoop]: Abstraction has 42674 states and 60588 transitions. [2021-11-21 01:51:06,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 01:51:06,144 INFO L276 IsEmpty]: Start isEmpty. Operand 42674 states and 60588 transitions. [2021-11-21 01:51:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-21 01:51:06,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:06,161 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:51:06,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:51:06,162 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:51:06,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:06,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1547051652, now seen corresponding path program 1 times [2021-11-21 01:51:06,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:06,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625684080] [2021-11-21 01:51:06,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:06,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2021-11-21 01:51:06,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:06,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625684080] [2021-11-21 01:51:06,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625684080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:06,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:51:06,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:51:06,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150645145] [2021-11-21 01:51:06,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:06,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:51:06,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:06,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:51:06,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:51:06,641 INFO L87 Difference]: Start difference. First operand 42674 states and 60588 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-21 01:51:08,706 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:13,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:13,773 INFO L93 Difference]: Finished difference Result 42680 states and 60593 transitions. [2021-11-21 01:51:13,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:51:13,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 178 [2021-11-21 01:51:13,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:14,085 INFO L225 Difference]: With dead ends: 42680 [2021-11-21 01:51:14,085 INFO L226 Difference]: Without dead ends: 42678 [2021-11-21 01:51:14,102 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 01:51:14,103 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 1513 mSDsluCounter, 3105 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 3934 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:14,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 3934 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 737 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-21 01:51:14,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42678 states. [2021-11-21 01:51:16,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42678 to 42678. [2021-11-21 01:51:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42678 states, 25981 states have (on average 1.277818405758054) internal successors, (33199), 27198 states have internal predecessors, (33199), 13104 states have call successors, (13104), 3694 states have call predecessors, (13104), 3590 states have return successors, (14288), 12326 states have call predecessors, (14288), 13100 states have call successors, (14288) [2021-11-21 01:51:16,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42678 states to 42678 states and 60591 transitions. [2021-11-21 01:51:16,375 INFO L78 Accepts]: Start accepts. Automaton has 42678 states and 60591 transitions. Word has length 178 [2021-11-21 01:51:16,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:16,380 INFO L470 AbstractCegarLoop]: Abstraction has 42678 states and 60591 transitions. [2021-11-21 01:51:16,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-21 01:51:16,380 INFO L276 IsEmpty]: Start isEmpty. Operand 42678 states and 60591 transitions. [2021-11-21 01:51:16,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-21 01:51:16,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:16,385 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 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] [2021-11-21 01:51:16,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:51:16,385 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:51:16,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:16,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1060984614, now seen corresponding path program 1 times [2021-11-21 01:51:16,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:16,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822180900] [2021-11-21 01:51:16,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:16,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:16,813 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-11-21 01:51:16,814 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:16,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822180900] [2021-11-21 01:51:16,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822180900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:16,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:51:16,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:51:16,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336936964] [2021-11-21 01:51:16,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:16,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:51:16,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:16,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:51:16,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:51:16,816 INFO L87 Difference]: Start difference. First operand 42678 states and 60591 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:51:18,877 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:24,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:24,017 INFO L93 Difference]: Finished difference Result 42684 states and 60596 transitions. [2021-11-21 01:51:24,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:51:24,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 182 [2021-11-21 01:51:24,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:24,205 INFO L225 Difference]: With dead ends: 42684 [2021-11-21 01:51:24,205 INFO L226 Difference]: Without dead ends: 42682 [2021-11-21 01:51:24,227 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 01:51:24,227 INFO L933 BasicCegarLoop]: 1316 mSDtfsCounter, 1509 mSDsluCounter, 3105 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 3937 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:24,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 3937 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 737 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-21 01:51:24,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42682 states. [2021-11-21 01:51:26,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42682 to 42682. [2021-11-21 01:51:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42682 states, 25984 states have (on average 1.2777863300492611) internal successors, (33202), 27201 states have internal predecessors, (33202), 13104 states have call successors, (13104), 3695 states have call predecessors, (13104), 3591 states have return successors, (14288), 12326 states have call predecessors, (14288), 13100 states have call successors, (14288) [2021-11-21 01:51:26,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42682 states to 42682 states and 60594 transitions. [2021-11-21 01:51:26,288 INFO L78 Accepts]: Start accepts. Automaton has 42682 states and 60594 transitions. Word has length 182 [2021-11-21 01:51:26,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:26,289 INFO L470 AbstractCegarLoop]: Abstraction has 42682 states and 60594 transitions. [2021-11-21 01:51:26,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:51:26,290 INFO L276 IsEmpty]: Start isEmpty. Operand 42682 states and 60594 transitions. [2021-11-21 01:51:26,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-21 01:51:26,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:26,294 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 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] [2021-11-21 01:51:26,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:51:26,295 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:51:26,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:26,295 INFO L85 PathProgramCache]: Analyzing trace with hash -417827268, now seen corresponding path program 1 times [2021-11-21 01:51:26,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:26,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006429260] [2021-11-21 01:51:26,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:26,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2021-11-21 01:51:26,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:26,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006429260] [2021-11-21 01:51:26,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006429260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:26,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:51:26,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:51:26,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569196666] [2021-11-21 01:51:26,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:26,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:51:26,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:26,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:51:26,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:51:26,716 INFO L87 Difference]: Start difference. First operand 42682 states and 60594 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, (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 01:51:28,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:33,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:33,876 INFO L93 Difference]: Finished difference Result 47743 states and 66114 transitions. [2021-11-21 01:51:33,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:51:33,876 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, (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 188 [2021-11-21 01:51:33,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:34,060 INFO L225 Difference]: With dead ends: 47743 [2021-11-21 01:51:34,060 INFO L226 Difference]: Without dead ends: 47739 [2021-11-21 01:51:34,079 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 01:51:34,080 INFO L933 BasicCegarLoop]: 1373 mSDtfsCounter, 1104 mSDsluCounter, 3759 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 4570 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:34,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 4570 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 826 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-21 01:51:34,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47739 states. [2021-11-21 01:51:35,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47739 to 47739. [2021-11-21 01:51:35,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47739 states, 28676 states have (on average 1.2646115218301017) internal successors, (36264), 29938 states have internal predecessors, (36264), 14331 states have call successors, (14331), 4855 states have call predecessors, (14331), 4729 states have return successors, (15515), 13532 states have call predecessors, (15515), 14327 states have call successors, (15515) [2021-11-21 01:51:36,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47739 states to 47739 states and 66110 transitions. [2021-11-21 01:51:36,216 INFO L78 Accepts]: Start accepts. Automaton has 47739 states and 66110 transitions. Word has length 188 [2021-11-21 01:51:36,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:36,217 INFO L470 AbstractCegarLoop]: Abstraction has 47739 states and 66110 transitions. [2021-11-21 01:51:36,217 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, (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 01:51:36,217 INFO L276 IsEmpty]: Start isEmpty. Operand 47739 states and 66110 transitions. [2021-11-21 01:51:36,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-21 01:51:36,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:36,222 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:51:36,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:51:36,223 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:51:36,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:36,223 INFO L85 PathProgramCache]: Analyzing trace with hash 435233340, now seen corresponding path program 1 times [2021-11-21 01:51:36,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:36,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551605221] [2021-11-21 01:51:36,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:36,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:36,624 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2021-11-21 01:51:36,624 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:36,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551605221] [2021-11-21 01:51:36,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551605221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:36,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:51:36,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:51:36,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875023421] [2021-11-21 01:51:36,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:36,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:51:36,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:36,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:51:36,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:51:36,626 INFO L87 Difference]: Start difference. First operand 47739 states and 66110 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 01:51:38,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:43,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:43,181 INFO L93 Difference]: Finished difference Result 47739 states and 66110 transitions. [2021-11-21 01:51:43,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:51:43,186 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 194 [2021-11-21 01:51:43,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:43,475 INFO L225 Difference]: With dead ends: 47739 [2021-11-21 01:51:43,476 INFO L226 Difference]: Without dead ends: 47284 [2021-11-21 01:51:43,490 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 01:51:43,490 INFO L933 BasicCegarLoop]: 1314 mSDtfsCounter, 1504 mSDsluCounter, 3104 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 3934 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:43,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1504 Valid, 3934 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 732 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-21 01:51:43,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47284 states. [2021-11-21 01:51:45,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47284 to 47284. [2021-11-21 01:51:45,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47284 states, 28568 states have (on average 1.2605712685522263) internal successors, (36012), 29686 states have internal predecessors, (36012), 14036 states have call successors, (14036), 4802 states have call predecessors, (14036), 4678 states have return successors, (15224), 13382 states have call predecessors, (15224), 14036 states have call successors, (15224) [2021-11-21 01:51:45,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47284 states to 47284 states and 65272 transitions. [2021-11-21 01:51:45,976 INFO L78 Accepts]: Start accepts. Automaton has 47284 states and 65272 transitions. Word has length 194 [2021-11-21 01:51:45,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:45,977 INFO L470 AbstractCegarLoop]: Abstraction has 47284 states and 65272 transitions. [2021-11-21 01:51:45,977 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 01:51:45,977 INFO L276 IsEmpty]: Start isEmpty. Operand 47284 states and 65272 transitions. [2021-11-21 01:51:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-21 01:51:45,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:45,984 INFO L514 BasicCegarLoop]: trace histogram [16, 11, 11, 11, 11, 11, 11, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:51:45,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:51:45,984 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:51:45,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:45,985 INFO L85 PathProgramCache]: Analyzing trace with hash 383210522, now seen corresponding path program 1 times [2021-11-21 01:51:45,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:45,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668118152] [2021-11-21 01:51:45,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:45,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2021-11-21 01:51:46,287 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:46,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668118152] [2021-11-21 01:51:46,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668118152] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:51:46,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233917948] [2021-11-21 01:51:46,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:46,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:51:46,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:51:46,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:51:46,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:51:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:46,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1989 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:51:47,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:51:47,482 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2021-11-21 01:51:47,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:51:47,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233917948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:47,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:51:47,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 01:51:47,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877399176] [2021-11-21 01:51:47,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:47,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:51:47,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:47,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:51:47,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:51:47,486 INFO L87 Difference]: Start difference. First operand 47284 states and 65272 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:51:49,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:54,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:54,844 INFO L93 Difference]: Finished difference Result 112036 states and 155100 transitions. [2021-11-21 01:51:54,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:51:54,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 195 [2021-11-21 01:51:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:55,266 INFO L225 Difference]: With dead ends: 112036 [2021-11-21 01:51:55,267 INFO L226 Difference]: Without dead ends: 67947 [2021-11-21 01:51:55,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:51:55,380 INFO L933 BasicCegarLoop]: 1833 mSDtfsCounter, 1407 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:55,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1407 Valid, 3081 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 552 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-11-21 01:51:55,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67947 states. [2021-11-21 01:51:58,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67947 to 67895. [2021-11-21 01:51:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67895 states, 41065 states have (on average 1.2616339948861561) internal successors, (51809), 42686 states have internal predecessors, (51809), 20080 states have call successors, (20080), 6926 states have call predecessors, (20080), 6748 states have return successors, (21826), 19113 states have call predecessors, (21826), 20080 states have call successors, (21826) [2021-11-21 01:51:58,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67895 states to 67895 states and 93715 transitions. [2021-11-21 01:51:58,705 INFO L78 Accepts]: Start accepts. Automaton has 67895 states and 93715 transitions. Word has length 195 [2021-11-21 01:51:58,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:58,706 INFO L470 AbstractCegarLoop]: Abstraction has 67895 states and 93715 transitions. [2021-11-21 01:51:58,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:51:58,706 INFO L276 IsEmpty]: Start isEmpty. Operand 67895 states and 93715 transitions. [2021-11-21 01:51:58,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-21 01:51:58,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:58,730 INFO L514 BasicCegarLoop]: trace histogram [17, 11, 11, 11, 11, 11, 11, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:58,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:51:58,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e313b19-1e3d-4195-8973-54e23f876ee5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:51:58,945 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:51:58,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:58,946 INFO L85 PathProgramCache]: Analyzing trace with hash 501771179, now seen corresponding path program 1 times [2021-11-21 01:51:58,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:58,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608199028] [2021-11-21 01:51:58,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:58,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2021-11-21 01:51:59,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:59,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608199028] [2021-11-21 01:51:59,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608199028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:59,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:51:59,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:51:59,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224769602] [2021-11-21 01:51:59,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:59,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:51:59,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:59,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:51:59,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:51:59,268 INFO L87 Difference]: Start difference. First operand 67895 states and 93715 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-21 01:52:01,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:08,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:08,589 INFO L93 Difference]: Finished difference Result 162927 states and 225351 transitions. [2021-11-21 01:52:08,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:52:08,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 213 [2021-11-21 01:52:08,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:08,973 INFO L225 Difference]: With dead ends: 162927 [2021-11-21 01:52:08,973 INFO L226 Difference]: Without dead ends: 98227 [2021-11-21 01:52:09,142 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 01:52:09,143 INFO L933 BasicCegarLoop]: 2462 mSDtfsCounter, 1400 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 3721 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:09,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1400 Valid, 3721 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 739 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-11-21 01:52:09,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98227 states.