./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-netconsole.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_d3104049-5f4a-4c66-9f37-623f99c3d40d/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3104049-5f4a-4c66-9f37-623f99c3d40d/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_d3104049-5f4a-4c66-9f37-623f99c3d40d/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3104049-5f4a-4c66-9f37-623f99c3d40d/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-netconsole.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3104049-5f4a-4c66-9f37-623f99c3d40d/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_d3104049-5f4a-4c66-9f37-623f99c3d40d/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 71a59a3596571aa79fb44a527a9b6a33b40c9acdae164ed96a4388ebcdf2e0df --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:07:04,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:07:04,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:07:04,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:07:04,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:07:04,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:07:04,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:07:04,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:07:04,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:07:04,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:07:04,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:07:04,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:07:04,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:07:04,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:07:04,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:07:04,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:07:04,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:07:04,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:07:04,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:07:04,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:07:04,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:07:04,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:07:04,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:07:04,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:07:04,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:07:04,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:07:04,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:07:04,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:07:04,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:07:04,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:07:04,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:07:04,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:07:04,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:07:04,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:07:04,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:07:04,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:07:04,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:07:04,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:07:04,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:07:04,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:07:04,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:07:04,259 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3104049-5f4a-4c66-9f37-623f99c3d40d/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:07:04,302 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:07:04,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:07:04,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:07:04,303 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:07:04,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:07:04,304 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:07:04,304 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:07:04,305 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:07:04,305 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:07:04,305 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:07:04,306 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:07:04,306 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:07:04,306 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:07:04,307 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:07:04,307 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:07:04,307 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:07:04,307 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:07:04,307 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:07:04,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:07:04,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:07:04,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:07:04,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:07:04,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:07:04,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:07:04,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:07:04,310 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:07:04,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:07:04,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:07:04,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:07:04,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:07:04,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:07:04,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:07:04,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:07:04,313 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:07:04,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:07:04,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:07:04,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:07:04,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:07:04,314 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_d3104049-5f4a-4c66-9f37-623f99c3d40d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3104049-5f4a-4c66-9f37-623f99c3d40d/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71a59a3596571aa79fb44a527a9b6a33b40c9acdae164ed96a4388ebcdf2e0df [2021-11-21 00:07:04,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:07:04,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:07:04,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:07:04,645 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:07:04,646 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:07:04,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3104049-5f4a-4c66-9f37-623f99c3d40d/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2021-11-21 00:07:04,719 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3104049-5f4a-4c66-9f37-623f99c3d40d/bin/utaipan-TEXQjIfE4P/data/5a947ae1d/dd50f815108c44bf902594bcd907638a/FLAG6b3c66f3e [2021-11-21 00:07:05,777 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:07:05,778 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3104049-5f4a-4c66-9f37-623f99c3d40d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2021-11-21 00:07:05,830 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3104049-5f4a-4c66-9f37-623f99c3d40d/bin/utaipan-TEXQjIfE4P/data/5a947ae1d/dd50f815108c44bf902594bcd907638a/FLAG6b3c66f3e [2021-11-21 00:07:06,104 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3104049-5f4a-4c66-9f37-623f99c3d40d/bin/utaipan-TEXQjIfE4P/data/5a947ae1d/dd50f815108c44bf902594bcd907638a [2021-11-21 00:07:06,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:07:06,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:07:06,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:07:06,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:07:06,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:07:06,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:07:06" (1/1) ... [2021-11-21 00:07:06,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1624b18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:06, skipping insertion in model container [2021-11-21 00:07:06,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:07:06" (1/1) ... [2021-11-21 00:07:06,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:07:06,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:07:08,447 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_d3104049-5f4a-4c66-9f37-623f99c3d40d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2021-11-21 00:07:08,450 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_d3104049-5f4a-4c66-9f37-623f99c3d40d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2021-11-21 00:07:08,451 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_d3104049-5f4a-4c66-9f37-623f99c3d40d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2021-11-21 00:07:08,451 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_d3104049-5f4a-4c66-9f37-623f99c3d40d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2021-11-21 00:07:08,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:07:08,515 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:07:08,830 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3104049-5f4a-4c66-9f37-623f99c3d40d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2021-11-21 00:07:08,830 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3104049-5f4a-4c66-9f37-623f99c3d40d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2021-11-21 00:07:08,831 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_d3104049-5f4a-4c66-9f37-623f99c3d40d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2021-11-21 00:07:08,831 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_d3104049-5f4a-4c66-9f37-623f99c3d40d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2021-11-21 00:07:08,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:07:08,957 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:07:08,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:08 WrapperNode [2021-11-21 00:07:08,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:07:08,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:07:08,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:07:08,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:07:08,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:08" (1/1) ... [2021-11-21 00:07:09,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:08" (1/1) ... [2021-11-21 00:07:09,220 INFO L137 Inliner]: procedures = 289, calls = 1070, calls flagged for inlining = 163, calls inlined = 153, statements flattened = 3446 [2021-11-21 00:07:09,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:07:09,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:07:09,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:07:09,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:07:09,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:08" (1/1) ... [2021-11-21 00:07:09,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:08" (1/1) ... [2021-11-21 00:07:09,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:08" (1/1) ... [2021-11-21 00:07:09,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:08" (1/1) ... [2021-11-21 00:07:09,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:08" (1/1) ... [2021-11-21 00:07:09,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:08" (1/1) ... [2021-11-21 00:07:09,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:08" (1/1) ... [2021-11-21 00:07:09,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:07:09,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:07:09,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:07:09,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:07:09,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:08" (1/1) ... [2021-11-21 00:07:09,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:07:09,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3104049-5f4a-4c66-9f37-623f99c3d40d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:07:09,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3104049-5f4a-4c66-9f37-623f99c3d40d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:07:09,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3104049-5f4a-4c66-9f37-623f99c3d40d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:07:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure show_enabled [2021-11-21 00:07:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure show_enabled [2021-11-21 00:07:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdevice_notifier [2021-11-21 00:07:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdevice_notifier [2021-11-21 00:07:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:07:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:07:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:07:09,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:07:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:07:09,533 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:07:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_mac [2021-11-21 00:07:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_mac [2021-11-21 00:07:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_put [2021-11-21 00:07:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_put [2021-11-21 00:07:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_ip [2021-11-21 00:07:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_ip [2021-11-21 00:07:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:07:09,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:07:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-21 00:07:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure show_dev_name [2021-11-21 00:07:09,535 INFO L138 BoogieDeclarations]: Found implementation of procedure show_dev_name [2021-11-21 00:07:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice_notifier [2021-11-21 00:07:09,535 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice_notifier [2021-11-21 00:07:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure drop_netconsole_target [2021-11-21 00:07:09,536 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_netconsole_target [2021-11-21 00:07:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure free_param_target [2021-11-21 00:07:09,536 INFO L138 BoogieDeclarations]: Found implementation of procedure free_param_target [2021-11-21 00:07:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:07:09,537 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:07:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_get [2021-11-21 00:07:09,537 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_get [2021-11-21 00:07:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_mac [2021-11-21 00:07:09,538 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_mac [2021-11-21 00:07:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_ip [2021-11-21 00:07:09,538 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_ip [2021-11-21 00:07:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 00:07:09,538 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 00:07:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-21 00:07:09,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-21 00:07:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_netconsole_target [2021-11-21 00:07:09,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_netconsole_target [2021-11-21 00:07:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:07:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:07:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:07:09,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:07:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 00:07:09,541 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 00:07:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:07:09,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:07:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 00:07:09,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 00:07:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 00:07:09,543 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 00:07:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_release [2021-11-21 00:07:09,544 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_release [2021-11-21 00:07:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_attr_show [2021-11-21 00:07:09,544 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_attr_show [2021-11-21 00:07:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure make_netconsole_target [2021-11-21 00:07:09,545 INFO L138 BoogieDeclarations]: Found implementation of procedure make_netconsole_target [2021-11-21 00:07:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:07:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:07:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_cleanup [2021-11-21 00:07:09,545 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_cleanup [2021-11-21 00:07:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_setup [2021-11-21 00:07:09,546 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_setup [2021-11-21 00:07:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-21 00:07:09,547 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-21 00:07:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-21 00:07:09,547 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-21 00:07:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-21 00:07:09,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-21 00:07:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-21 00:07:09,548 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-21 00:07:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_port [2021-11-21 00:07:09,548 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_port [2021-11-21 00:07:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:07:09,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:07:09,549 INFO L130 BoogieDeclarations]: Found specification of procedure strnchr [2021-11-21 00:07:09,549 INFO L138 BoogieDeclarations]: Found implementation of procedure strnchr [2021-11-21 00:07:09,549 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtou16 [2021-11-21 00:07:09,549 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtou16 [2021-11-21 00:07:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:07:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 00:07:09,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 00:07:09,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:07:09,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:07:09,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:07:09,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:07:09,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 00:07:09,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 00:07:09,552 INFO L130 BoogieDeclarations]: Found specification of procedure store_enabled [2021-11-21 00:07:09,553 INFO L138 BoogieDeclarations]: Found implementation of procedure store_enabled [2021-11-21 00:07:09,553 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_ip [2021-11-21 00:07:09,553 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_ip [2021-11-21 00:07:09,553 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-21 00:07:09,553 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2021-11-21 00:07:09,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cleanup_netconsole_14_2 [2021-11-21 00:07:09,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cleanup_netconsole_14_2 [2021-11-21 00:07:09,554 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:07:09,554 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:07:09,554 INFO L130 BoogieDeclarations]: Found specification of procedure to_target [2021-11-21 00:07:09,555 INFO L138 BoogieDeclarations]: Found implementation of procedure to_target [2021-11-21 00:07:09,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 00:07:09,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 00:07:09,556 INFO L130 BoogieDeclarations]: Found specification of procedure config_item_put [2021-11-21 00:07:09,556 INFO L138 BoogieDeclarations]: Found implementation of procedure config_item_put [2021-11-21 00:07:09,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:07:09,559 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_mac [2021-11-21 00:07:09,559 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_mac [2021-11-21 00:07:09,559 INFO L130 BoogieDeclarations]: Found specification of procedure in6_pton [2021-11-21 00:07:09,560 INFO L138 BoogieDeclarations]: Found implementation of procedure in6_pton [2021-11-21 00:07:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:07:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:07:09,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:07:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:07:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:07:09,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:07:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:07:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 00:07:09,568 INFO L130 BoogieDeclarations]: Found specification of procedure store_local_ip [2021-11-21 00:07:09,569 INFO L138 BoogieDeclarations]: Found implementation of procedure store_local_ip [2021-11-21 00:07:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure in_aton [2021-11-21 00:07:09,569 INFO L138 BoogieDeclarations]: Found implementation of procedure in_aton [2021-11-21 00:07:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:07:09,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:07:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-21 00:07:09,569 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-21 00:07:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure store_dev_name [2021-11-21 00:07:09,570 INFO L138 BoogieDeclarations]: Found implementation of procedure store_dev_name [2021-11-21 00:07:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_port [2021-11-21 00:07:09,570 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_port [2021-11-21 00:07:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_attr_store [2021-11-21 00:07:09,570 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_attr_store [2021-11-21 00:07:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:07:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure store_local_port [2021-11-21 00:07:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure store_local_port [2021-11-21 00:07:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:07:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:07:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure config_item_name [2021-11-21 00:07:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure config_item_name [2021-11-21 00:07:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_port [2021-11-21 00:07:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_port [2021-11-21 00:07:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:07:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:07:10,480 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:07:10,483 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:07:10,618 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:07:12,812 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:07:12,884 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:07:13,389 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:07:13,389 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-21 00:07:13,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:07:13 BoogieIcfgContainer [2021-11-21 00:07:13,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:07:13,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:07:13,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:07:13,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:07:13,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:07:06" (1/3) ... [2021-11-21 00:07:13,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7127d6ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:07:13, skipping insertion in model container [2021-11-21 00:07:13,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:08" (2/3) ... [2021-11-21 00:07:13,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7127d6ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:07:13, skipping insertion in model container [2021-11-21 00:07:13,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:07:13" (3/3) ... [2021-11-21 00:07:13,403 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2021-11-21 00:07:13,412 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:07:13,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 00:07:13,486 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:07:13,501 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:07:13,501 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 00:07:13,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 1124 states, 667 states have (on average 1.302848575712144) internal successors, (869), 676 states have internal predecessors, (869), 392 states have call successors, (392), 63 states have call predecessors, (392), 62 states have return successors, (387), 387 states have call predecessors, (387), 387 states have call successors, (387) [2021-11-21 00:07:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2021-11-21 00:07:13,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:13,634 INFO L514 BasicCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:07:13,634 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:07:13,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:13,640 INFO L85 PathProgramCache]: Analyzing trace with hash 228936648, now seen corresponding path program 1 times [2021-11-21 00:07:13,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:13,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264891111] [2021-11-21 00:07:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:13,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21756 trivial. 0 not checked. [2021-11-21 00:07:14,864 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:14,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264891111] [2021-11-21 00:07:14,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264891111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:14,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:14,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:07:14,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040717132] [2021-11-21 00:07:14,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:14,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:07:14,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:14,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:07:14,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:14,907 INFO L87 Difference]: Start difference. First operand has 1124 states, 667 states have (on average 1.302848575712144) internal successors, (869), 676 states have internal predecessors, (869), 392 states have call successors, (392), 63 states have call predecessors, (392), 62 states have return successors, (387), 387 states have call predecessors, (387), 387 states have call successors, (387) Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2021-11-21 00:07:15,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:15,738 INFO L93 Difference]: Finished difference Result 2950 states and 4346 transitions. [2021-11-21 00:07:15,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:07:15,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) Word has length 761 [2021-11-21 00:07:15,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:15,773 INFO L225 Difference]: With dead ends: 2950 [2021-11-21 00:07:15,774 INFO L226 Difference]: Without dead ends: 1966 [2021-11-21 00:07:15,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:15,789 INFO L933 BasicCegarLoop]: 1742 mSDtfsCounter, 1340 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:15,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1340 Valid, 3111 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:07:15,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2021-11-21 00:07:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1962. [2021-11-21 00:07:16,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1189 states have (on average 1.313708999158957) internal successors, (1562), 1205 states have internal predecessors, (1562), 651 states have call successors, (651), 120 states have call predecessors, (651), 119 states have return successors, (647), 647 states have call predecessors, (647), 647 states have call successors, (647) [2021-11-21 00:07:16,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2860 transitions. [2021-11-21 00:07:16,129 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2860 transitions. Word has length 761 [2021-11-21 00:07:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:16,139 INFO L470 AbstractCegarLoop]: Abstraction has 1962 states and 2860 transitions. [2021-11-21 00:07:16,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2021-11-21 00:07:16,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2860 transitions. [2021-11-21 00:07:16,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2021-11-21 00:07:16,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:16,181 INFO L514 BasicCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:07:16,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:07:16,182 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:07:16,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:16,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1624430654, now seen corresponding path program 1 times [2021-11-21 00:07:16,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:16,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143913393] [2021-11-21 00:07:16,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:16,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:16,939 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2021-11-21 00:07:16,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:16,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143913393] [2021-11-21 00:07:16,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143913393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:16,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:16,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:07:16,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642254349] [2021-11-21 00:07:16,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:16,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:07:16,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:16,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:07:16,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:16,952 INFO L87 Difference]: Start difference. First operand 1962 states and 2860 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-21 00:07:17,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:17,665 INFO L93 Difference]: Finished difference Result 4724 states and 6830 transitions. [2021-11-21 00:07:17,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:07:17,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 788 [2021-11-21 00:07:17,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:17,696 INFO L225 Difference]: With dead ends: 4724 [2021-11-21 00:07:17,697 INFO L226 Difference]: Without dead ends: 2911 [2021-11-21 00:07:17,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:17,719 INFO L933 BasicCegarLoop]: 1753 mSDtfsCounter, 1318 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 3180 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:17,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1318 Valid, 3180 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:07:17,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2021-11-21 00:07:17,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2892. [2021-11-21 00:07:17,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 1755 states have (on average 1.3128205128205128) internal successors, (2304), 1782 states have internal predecessors, (2304), 932 states have call successors, (932), 203 states have call predecessors, (932), 202 states have return successors, (928), 923 states have call predecessors, (928), 928 states have call successors, (928) [2021-11-21 00:07:17,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 4164 transitions. [2021-11-21 00:07:17,936 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 4164 transitions. Word has length 788 [2021-11-21 00:07:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:17,939 INFO L470 AbstractCegarLoop]: Abstraction has 2892 states and 4164 transitions. [2021-11-21 00:07:17,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-21 00:07:17,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 4164 transitions. [2021-11-21 00:07:17,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2021-11-21 00:07:17,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:17,954 INFO L514 BasicCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:07:17,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:07:17,955 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 00:07:17,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:17,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1249087455, now seen corresponding path program 1 times [2021-11-21 00:07:17,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:17,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071091295] [2021-11-21 00:07:17,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:17,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2021-11-21 00:07:18,451 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:18,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071091295] [2021-11-21 00:07:18,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071091295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:18,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:18,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:07:18,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372219743] [2021-11-21 00:07:18,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:18,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:07:18,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:18,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:07:18,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:18,455 INFO L87 Difference]: Start difference. First operand 2892 states and 4164 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-21 00:07:19,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:19,151 INFO L93 Difference]: Finished difference Result 7514 states and 10747 transitions. [2021-11-21 00:07:19,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:07:19,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 789 [2021-11-21 00:07:19,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:19,201 INFO L225 Difference]: With dead ends: 7514 [2021-11-21 00:07:19,201 INFO L226 Difference]: Without dead ends: 4771 [2021-11-21 00:07:19,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:19,225 INFO L933 BasicCegarLoop]: 1781 mSDtfsCounter, 1317 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 3208 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:19,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1317 Valid, 3208 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:07:19,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2021-11-21 00:07:19,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 4752. [2021-11-21 00:07:19,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 2887 states have (on average 1.312088673363353) internal successors, (3788), 2936 states have internal predecessors, (3788), 1494 states have call successors, (1494), 369 states have call predecessors, (1494), 368 states have return successors, (1490), 1475 states have call predecessors, (1490), 1490 states have call successors, (1490) [2021-11-21 00:07:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 6772 transitions. [2021-11-21 00:07:19,615 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 6772 transitions. Word has length 789 [2021-11-21 00:07:19,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:19,617 INFO L470 AbstractCegarLoop]: Abstraction has 4752 states and 6772 transitions. [2021-11-21 00:07:19,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-21 00:07:19,618 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 6772 transitions. [2021-11-21 00:07:19,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2021-11-21 00:07:19,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:19,634 INFO L514 BasicCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:07:19,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:07:19,635 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 00:07:19,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:19,636 INFO L85 PathProgramCache]: Analyzing trace with hash -585860028, now seen corresponding path program 1 times [2021-11-21 00:07:19,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:19,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481186379] [2021-11-21 00:07:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:19,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2021-11-21 00:07:20,041 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:20,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481186379] [2021-11-21 00:07:20,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481186379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:20,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:20,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:07:20,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418925487] [2021-11-21 00:07:20,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:20,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:07:20,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:20,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:07:20,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:20,045 INFO L87 Difference]: Start difference. First operand 4752 states and 6772 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-21 00:07:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:20,891 INFO L93 Difference]: Finished difference Result 13050 states and 18507 transitions. [2021-11-21 00:07:20,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:07:20,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 792 [2021-11-21 00:07:20,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:20,960 INFO L225 Difference]: With dead ends: 13050 [2021-11-21 00:07:20,960 INFO L226 Difference]: Without dead ends: 8447 [2021-11-21 00:07:20,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:20,986 INFO L933 BasicCegarLoop]: 1849 mSDtfsCounter, 1314 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 3276 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:20,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 3276 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:07:20,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8447 states. [2021-11-21 00:07:21,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8447 to 8428. [2021-11-21 00:07:21,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8428 states, 5126 states have (on average 1.3109637143971908) internal successors, (6720), 5219 states have internal predecessors, (6720), 2599 states have call successors, (2599), 701 states have call predecessors, (2599), 700 states have return successors, (2595), 2560 states have call predecessors, (2595), 2595 states have call successors, (2595) [2021-11-21 00:07:21,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 11914 transitions. [2021-11-21 00:07:21,616 INFO L78 Accepts]: Start accepts. Automaton has 8428 states and 11914 transitions. Word has length 792 [2021-11-21 00:07:21,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:21,617 INFO L470 AbstractCegarLoop]: Abstraction has 8428 states and 11914 transitions. [2021-11-21 00:07:21,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-21 00:07:21,635 INFO L276 IsEmpty]: Start isEmpty. Operand 8428 states and 11914 transitions. [2021-11-21 00:07:21,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2021-11-21 00:07:21,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:21,648 INFO L514 BasicCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:07:21,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:07:21,648 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 00:07:21,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:21,650 INFO L85 PathProgramCache]: Analyzing trace with hash 364942462, now seen corresponding path program 1 times [2021-11-21 00:07:21,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:21,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548472255] [2021-11-21 00:07:21,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:21,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:22,024 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2021-11-21 00:07:22,025 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:22,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548472255] [2021-11-21 00:07:22,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548472255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:22,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:22,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:07:22,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830587770] [2021-11-21 00:07:22,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:22,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:07:22,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:22,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:07:22,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:22,029 INFO L87 Difference]: Start difference. First operand 8428 states and 11914 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-21 00:07:23,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:23,151 INFO L93 Difference]: Finished difference Result 23946 states and 33731 transitions. [2021-11-21 00:07:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:07:23,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 791 [2021-11-21 00:07:23,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:23,271 INFO L225 Difference]: With dead ends: 23946 [2021-11-21 00:07:23,271 INFO L226 Difference]: Without dead ends: 15667 [2021-11-21 00:07:23,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:23,315 INFO L933 BasicCegarLoop]: 1897 mSDtfsCounter, 1315 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 3324 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:23,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1315 Valid, 3324 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 00:07:23,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15667 states. [2021-11-21 00:07:24,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15667 to 15648. [2021-11-21 00:07:24,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15648 states, 9529 states have (on average 1.3092664497848672) internal successors, (12476), 9710 states have internal predecessors, (12476), 4752 states have call successors, (4752), 1365 states have call predecessors, (4752), 1364 states have return successors, (4748), 4673 states have call predecessors, (4748), 4748 states have call successors, (4748) [2021-11-21 00:07:24,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15648 states to 15648 states and 21976 transitions. [2021-11-21 00:07:24,527 INFO L78 Accepts]: Start accepts. Automaton has 15648 states and 21976 transitions. Word has length 791 [2021-11-21 00:07:24,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:24,528 INFO L470 AbstractCegarLoop]: Abstraction has 15648 states and 21976 transitions. [2021-11-21 00:07:24,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-21 00:07:24,529 INFO L276 IsEmpty]: Start isEmpty. Operand 15648 states and 21976 transitions. [2021-11-21 00:07:24,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2021-11-21 00:07:24,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:24,545 INFO L514 BasicCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:07:24,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:07:24,545 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 00:07:24,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:24,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1609922599, now seen corresponding path program 1 times [2021-11-21 00:07:24,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:24,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250392784] [2021-11-21 00:07:24,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:24,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2021-11-21 00:07:24,942 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:24,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250392784] [2021-11-21 00:07:24,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250392784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:24,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:24,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:07:24,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439790603] [2021-11-21 00:07:24,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:24,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:07:24,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:24,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:07:24,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:24,946 INFO L87 Difference]: Start difference. First operand 15648 states and 21976 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-21 00:07:26,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:26,717 INFO L93 Difference]: Finished difference Result 45298 states and 63439 transitions. [2021-11-21 00:07:26,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:07:26,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 790 [2021-11-21 00:07:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:26,900 INFO L225 Difference]: With dead ends: 45298 [2021-11-21 00:07:26,900 INFO L226 Difference]: Without dead ends: 29799 [2021-11-21 00:07:26,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:26,970 INFO L933 BasicCegarLoop]: 1944 mSDtfsCounter, 1316 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:26,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1316 Valid, 3371 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:07:27,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29799 states. [2021-11-21 00:07:28,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29799 to 29780. [2021-11-21 00:07:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29780 states, 18160 states have (on average 1.3070484581497797) internal successors, (23736), 18517 states have internal predecessors, (23736), 8925 states have call successors, (8925), 2693 states have call predecessors, (8925), 2692 states have return successors, (8921), 8766 states have call predecessors, (8921), 8921 states have call successors, (8921) [2021-11-21 00:07:28,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29780 states to 29780 states and 41582 transitions. [2021-11-21 00:07:28,881 INFO L78 Accepts]: Start accepts. Automaton has 29780 states and 41582 transitions. Word has length 790 [2021-11-21 00:07:28,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:28,882 INFO L470 AbstractCegarLoop]: Abstraction has 29780 states and 41582 transitions. [2021-11-21 00:07:28,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-21 00:07:28,883 INFO L276 IsEmpty]: Start isEmpty. Operand 29780 states and 41582 transitions. [2021-11-21 00:07:28,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2021-11-21 00:07:28,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:28,899 INFO L514 BasicCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:07:28,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:07:28,900 INFO L402 AbstractCegarLoop]: === Iteration 7 === 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 00:07:28,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:28,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1462882991, now seen corresponding path program 1 times [2021-11-21 00:07:28,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:28,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774155012] [2021-11-21 00:07:28,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:28,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:29,286 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2021-11-21 00:07:29,287 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:29,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774155012] [2021-11-21 00:07:29,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774155012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:29,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:29,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:07:29,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696027813] [2021-11-21 00:07:29,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:29,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:07:29,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:29,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:07:29,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:29,290 INFO L87 Difference]: Start difference. First operand 29780 states and 41582 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-21 00:07:31,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:31,627 INFO L93 Difference]: Finished difference Result 87034 states and 121227 transitions. [2021-11-21 00:07:31,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:07:31,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 793 [2021-11-21 00:07:31,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:31,982 INFO L225 Difference]: With dead ends: 87034 [2021-11-21 00:07:31,983 INFO L226 Difference]: Without dead ends: 57403 [2021-11-21 00:07:32,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:32,148 INFO L933 BasicCegarLoop]: 1993 mSDtfsCounter, 1313 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 3420 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:32,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1313 Valid, 3420 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 00:07:32,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57403 states. [2021-11-21 00:07:34,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57403 to 57384. [2021-11-21 00:07:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57384 states, 35047 states have (on average 1.3044197791537078) internal successors, (45716), 35756 states have internal predecessors, (45716), 16986 states have call successors, (16986), 5349 states have call predecessors, (16986), 5348 states have return successors, (16982), 16667 states have call predecessors, (16982), 16982 states have call successors, (16982) [2021-11-21 00:07:35,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57384 states to 57384 states and 79684 transitions. [2021-11-21 00:07:35,649 INFO L78 Accepts]: Start accepts. Automaton has 57384 states and 79684 transitions. Word has length 793 [2021-11-21 00:07:35,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:35,667 INFO L470 AbstractCegarLoop]: Abstraction has 57384 states and 79684 transitions. [2021-11-21 00:07:35,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-21 00:07:35,668 INFO L276 IsEmpty]: Start isEmpty. Operand 57384 states and 79684 transitions. [2021-11-21 00:07:35,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2021-11-21 00:07:35,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:35,679 INFO L514 BasicCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:07:35,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:07:35,679 INFO L402 AbstractCegarLoop]: === Iteration 8 === 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 00:07:35,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:35,682 INFO L85 PathProgramCache]: Analyzing trace with hash 457634774, now seen corresponding path program 1 times [2021-11-21 00:07:35,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:35,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481143974] [2021-11-21 00:07:35,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:35,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2021-11-21 00:07:36,047 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:36,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481143974] [2021-11-21 00:07:36,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481143974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:36,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:36,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:07:36,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160637618] [2021-11-21 00:07:36,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:36,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:07:36,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:07:36,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:36,050 INFO L87 Difference]: Start difference. First operand 57384 states and 79684 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-21 00:07:39,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:39,708 INFO L93 Difference]: Finished difference Result 168482 states and 233399 transitions. [2021-11-21 00:07:39,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:07:39,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 794 [2021-11-21 00:07:39,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:40,366 INFO L225 Difference]: With dead ends: 168482 [2021-11-21 00:07:40,366 INFO L226 Difference]: Without dead ends: 111247 [2021-11-21 00:07:40,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:40,603 INFO L933 BasicCegarLoop]: 2041 mSDtfsCounter, 1312 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 3468 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:40,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 3468 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 00:07:40,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111247 states. [2021-11-21 00:07:45,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111247 to 111228. [2021-11-21 00:07:45,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111228 states, 68046 states have (on average 1.3014725332863064) internal successors, (88560), 69459 states have internal predecessors, (88560), 32519 states have call successors, (32519), 10661 states have call predecessors, (32519), 10660 states have return successors, (32515), 31880 states have call predecessors, (32515), 32515 states have call successors, (32515) [2021-11-21 00:07:46,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111228 states to 111228 states and 153594 transitions. [2021-11-21 00:07:46,265 INFO L78 Accepts]: Start accepts. Automaton has 111228 states and 153594 transitions. Word has length 794 [2021-11-21 00:07:46,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:46,267 INFO L470 AbstractCegarLoop]: Abstraction has 111228 states and 153594 transitions. [2021-11-21 00:07:46,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-21 00:07:46,268 INFO L276 IsEmpty]: Start isEmpty. Operand 111228 states and 153594 transitions. [2021-11-21 00:07:46,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2021-11-21 00:07:46,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:46,283 INFO L514 BasicCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:07:46,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:07:46,284 INFO L402 AbstractCegarLoop]: === Iteration 9 === 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 00:07:46,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:46,284 INFO L85 PathProgramCache]: Analyzing trace with hash 399920504, now seen corresponding path program 1 times [2021-11-21 00:07:46,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:46,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479115070] [2021-11-21 00:07:46,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:46,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2021-11-21 00:07:46,754 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:46,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479115070] [2021-11-21 00:07:46,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479115070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:46,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:46,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:07:46,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69284086] [2021-11-21 00:07:46,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:46,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:07:46,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:46,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:07:46,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:46,760 INFO L87 Difference]: Start difference. First operand 111228 states and 153594 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-21 00:07:54,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:54,692 INFO L93 Difference]: Finished difference Result 326698 states and 450064 transitions. [2021-11-21 00:07:54,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:07:54,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 795 [2021-11-21 00:07:54,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:56,211 INFO L225 Difference]: With dead ends: 326698 [2021-11-21 00:07:56,211 INFO L226 Difference]: Without dead ends: 215619 [2021-11-21 00:07:57,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:57,282 INFO L933 BasicCegarLoop]: 2329 mSDtfsCounter, 1311 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 3756 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:57,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1311 Valid, 3756 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 00:07:57,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215619 states. [2021-11-21 00:08:07,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215619 to 215600. [2021-11-21 00:08:07,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215600 states, 132134 states have (on average 1.2982351249489155) internal successors, (171541), 134951 states have internal predecessors, (171541), 62246 states have call successors, (62246), 21218 states have call predecessors, (62246), 21217 states have return successors, (62242), 60967 states have call predecessors, (62242), 62242 states have call successors, (62242) [2021-11-21 00:08:09,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215600 states to 215600 states and 296029 transitions. [2021-11-21 00:08:09,417 INFO L78 Accepts]: Start accepts. Automaton has 215600 states and 296029 transitions. Word has length 795 [2021-11-21 00:08:09,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:08:09,421 INFO L470 AbstractCegarLoop]: Abstraction has 215600 states and 296029 transitions. [2021-11-21 00:08:09,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2021-11-21 00:08:09,421 INFO L276 IsEmpty]: Start isEmpty. Operand 215600 states and 296029 transitions. [2021-11-21 00:08:09,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2021-11-21 00:08:09,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:08:09,441 INFO L514 BasicCegarLoop]: trace histogram [78, 74, 74, 74, 74, 74, 74, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:08:09,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:08:09,442 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 00:08:09,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:08:09,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1868360676, now seen corresponding path program 1 times [2021-11-21 00:08:09,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:08:09,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632868942] [2021-11-21 00:08:09,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:08:09,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:08:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:08:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 22239 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22239 trivial. 0 not checked. [2021-11-21 00:08:10,192 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:08:10,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632868942] [2021-11-21 00:08:10,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632868942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:08:10,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:08:10,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:08:10,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527221814] [2021-11-21 00:08:10,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:08:10,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:08:10,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:08:10,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:08:10,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:08:10,195 INFO L87 Difference]: Start difference. First operand 215600 states and 296029 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (86), 3 states have call predecessors, (86), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84)