./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-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/bin/utaipan-EQgc7hIp5V --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 d291badf6e321259e0b1b1625d2ed48867e61016cda7885a720272c3e12df877 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:32:33,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:32:33,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:32:33,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:32:33,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:32:33,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:32:33,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:32:33,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:32:33,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:32:33,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:32:33,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:32:33,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:32:33,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:32:33,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:32:33,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:32:33,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:32:33,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:32:33,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:32:33,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:32:33,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:32:33,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:32:33,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:32:33,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:32:33,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:32:33,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:32:33,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:32:33,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:32:33,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:32:33,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:32:33,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:32:33,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:32:33,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:32:33,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:32:33,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:32:33,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:32:33,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:32:33,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:32:33,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:32:33,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:32:33,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:32:33,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:32:33,252 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:32:33,307 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:32:33,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:32:33,308 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:32:33,308 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:32:33,309 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:32:33,309 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:32:33,309 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:32:33,309 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:32:33,310 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:32:33,310 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:32:33,310 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:32:33,310 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:32:33,310 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:32:33,311 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:32:33,311 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:32:33,311 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:32:33,311 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:32:33,312 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:32:33,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:32:33,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:32:33,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:32:33,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:32:33,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:32:33,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:32:33,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:32:33,325 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:32:33,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:32:33,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:32:33,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:32:33,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:32:33,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:32:33,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:32:33,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:32:33,327 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:32:33,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:32:33,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:32:33,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:32:33,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:32:33,328 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_1108e94f-8d41-45c0-96fe-cb97dbc585f8/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d291badf6e321259e0b1b1625d2ed48867e61016cda7885a720272c3e12df877 [2021-11-23 02:32:33,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:32:33,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:32:33,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:32:33,699 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:32:33,700 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:32:33,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-23 02:32:33,819 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/bin/utaipan-EQgc7hIp5V/data/eadc58499/258263a848c24119832562b00fa588dd/FLAG00ec62590 [2021-11-23 02:32:34,935 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:32:34,936 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-23 02:32:35,015 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/bin/utaipan-EQgc7hIp5V/data/eadc58499/258263a848c24119832562b00fa588dd/FLAG00ec62590 [2021-11-23 02:32:35,185 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/bin/utaipan-EQgc7hIp5V/data/eadc58499/258263a848c24119832562b00fa588dd [2021-11-23 02:32:35,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:32:35,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:32:35,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:32:35,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:32:35,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:32:35,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:32:35" (1/1) ... [2021-11-23 02:32:35,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dae0d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:35, skipping insertion in model container [2021-11-23 02:32:35,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:32:35" (1/1) ... [2021-11-23 02:32:35,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:32:35,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:32:40,405 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_1108e94f-8d41-45c0-96fe-cb97dbc585f8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462737,462750] [2021-11-23 02:32:40,410 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_1108e94f-8d41-45c0-96fe-cb97dbc585f8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462906,462919] [2021-11-23 02:32:40,420 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_1108e94f-8d41-45c0-96fe-cb97dbc585f8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463073,463086] [2021-11-23 02:32:40,421 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_1108e94f-8d41-45c0-96fe-cb97dbc585f8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463241,463254] [2021-11-23 02:32:40,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:32:40,523 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:32:41,123 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_1108e94f-8d41-45c0-96fe-cb97dbc585f8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462737,462750] [2021-11-23 02:32:41,123 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_1108e94f-8d41-45c0-96fe-cb97dbc585f8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462906,462919] [2021-11-23 02:32:41,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463073,463086] [2021-11-23 02:32:41,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463241,463254] [2021-11-23 02:32:41,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:32:41,381 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:32:41,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:41 WrapperNode [2021-11-23 02:32:41,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:32:41,384 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:32:41,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:32:41,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:32:41,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:41" (1/1) ... [2021-11-23 02:32:41,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:41" (1/1) ... [2021-11-23 02:32:41,837 INFO L137 Inliner]: procedures = 522, calls = 2018, calls flagged for inlining = 218, calls inlined = 177, statements flattened = 5279 [2021-11-23 02:32:41,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:32:41,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:32:41,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:32:41,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:32:41,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:41" (1/1) ... [2021-11-23 02:32:41,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:41" (1/1) ... [2021-11-23 02:32:41,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:41" (1/1) ... [2021-11-23 02:32:41,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:41" (1/1) ... [2021-11-23 02:32:42,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:41" (1/1) ... [2021-11-23 02:32:42,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:41" (1/1) ... [2021-11-23 02:32:42,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:41" (1/1) ... [2021-11-23 02:32:42,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:32:42,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:32:42,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:32:42,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:32:42,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:41" (1/1) ... [2021-11-23 02:32:42,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:32:42,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:42,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:32:42,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1108e94f-8d41-45c0-96fe-cb97dbc585f8/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:32:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_get_ds_info [2021-11-23 02:32:42,323 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_get_ds_info [2021-11-23 02:32:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-23 02:32:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_prepare [2021-11-23 02:32:42,323 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_prepare [2021-11-23 02:32:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_prepare_ds [2021-11-23 02:32:42,324 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_prepare_ds [2021-11-23 02:32:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_write [2021-11-23 02:32:42,325 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_write [2021-11-23 02:32:42,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:32:42,325 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:32:42,325 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-23 02:32:42,325 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-23 02:32:42,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:32:42,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:32:42,326 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-23 02:32:42,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-23 02:32:42,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:32:42,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:32:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_init_commit [2021-11-23 02:32:42,327 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_init_commit [2021-11-23 02:32:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_init_decode_pages [2021-11-23 02:32:42,327 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_init_decode_pages [2021-11-23 02:32:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 02:32:42,327 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 02:32:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_lseg [2021-11-23 02:32:42,328 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_lseg [2021-11-23 02:32:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_SERVER [2021-11-23 02:32:42,329 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_SERVER [2021-11-23 02:32:42,329 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_select_ds_fh [2021-11-23 02:32:42,329 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_select_ds_fh [2021-11-23 02:32:42,329 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2021-11-23 02:32:42,329 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2021-11-23 02:32:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_LSEG [2021-11-23 02:32:42,330 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_LSEG [2021-11-23 02:32:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:32:42,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 02:32:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_init_read [2021-11-23 02:32:42,331 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_init_read [2021-11-23 02:32:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-23 02:32:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:32:42,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:32:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_calc_j_index [2021-11-23 02:32:42,333 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_calc_j_index [2021-11-23 02:32:42,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:32:42,334 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_count_stats [2021-11-23 02:32:42,334 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_count_stats [2021-11-23 02:32:42,335 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:32:42,336 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:32:42,336 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_get_lseg [2021-11-23 02:32:42,336 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_get_lseg [2021-11-23 02:32:42,336 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 02:32:42,336 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 02:32:42,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:32:42,337 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_pageio_reset_read_mds [2021-11-23 02:32:42,337 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_pageio_reset_read_mds [2021-11-23 02:32:42,338 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_recover_commit_reqs [2021-11-23 02:32:42,338 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_recover_commit_reqs [2021-11-23 02:32:42,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:32:42,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 02:32:42,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 02:32:42,339 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_test [2021-11-23 02:32:42,339 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_test [2021-11-23 02:32:42,339 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_init_write [2021-11-23 02:32:42,339 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_init_write [2021-11-23 02:32:42,339 INFO L130 BoogieDeclarations]: Found specification of procedure transfer_commit_list [2021-11-23 02:32:42,339 INFO L138 BoogieDeclarations]: Found implementation of procedure transfer_commit_list [2021-11-23 02:32:42,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:32:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_release [2021-11-23 02:32:42,341 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_release [2021-11-23 02:32:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_layout_hdr [2021-11-23 02:32:42,341 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_layout_hdr [2021-11-23 02:32:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:32:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:32:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_find_or_create_ds_client [2021-11-23 02:32:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_find_or_create_ds_client [2021-11-23 02:32:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-23 02:32:42,343 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-23 02:32:42,343 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2021-11-23 02:32:42,344 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2021-11-23 02:32:42,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:32:42,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:32:42,344 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_deveiceid_node [2021-11-23 02:32:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_deveiceid_node [2021-11-23 02:32:42,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:32:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-23 02:32:42,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-23 02:32:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 02:32:42,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 02:32:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_request_remove_commit_list [2021-11-23 02:32:42,348 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_request_remove_commit_list [2021-11-23 02:32:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_commit_done [2021-11-23 02:32:42,348 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_commit_done [2021-11-23 02:32:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-23 02:32:42,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-23 02:32:42,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:32:42,349 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_FROM_HDR [2021-11-23 02:32:42,349 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_FROM_HDR [2021-11-23 02:32:42,349 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_inline_decode [2021-11-23 02:32:42,350 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_inline_decode [2021-11-23 02:32:42,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:32:42,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:32:42,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:32:42,350 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_alloc_layout_hdr [2021-11-23 02:32:42,351 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_alloc_layout_hdr [2021-11-23 02:32:42,352 INFO L130 BoogieDeclarations]: Found specification of procedure req_offset [2021-11-23 02:32:42,355 INFO L138 BoogieDeclarations]: Found implementation of procedure req_offset [2021-11-23 02:32:42,355 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:32:42,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:32:42,356 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_mark_request_commit [2021-11-23 02:32:42,356 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_mark_request_commit [2021-11-23 02:32:42,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_80___0 [2021-11-23 02:32:42,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_80___0 [2021-11-23 02:32:42,357 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-23 02:32:42,357 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-23 02:32:42,364 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:32:42,365 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:32:42,365 INFO L130 BoogieDeclarations]: Found specification of procedure _filelayout_free_lseg [2021-11-23 02:32:42,365 INFO L138 BoogieDeclarations]: Found implementation of procedure _filelayout_free_lseg [2021-11-23 02:32:42,365 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_alloc_lseg [2021-11-23 02:32:42,365 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_alloc_lseg [2021-11-23 02:32:42,365 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 02:32:42,365 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 02:32:42,365 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_set_rw_stateid [2021-11-23 02:32:42,366 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_set_rw_stateid [2021-11-23 02:32:42,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:32:42,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:32:42,366 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 02:32:42,366 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 02:32:42,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:32:42,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:32:42,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:32:42,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:32:42,367 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_count_stats [2021-11-23 02:32:42,367 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_count_stats [2021-11-23 02:32:42,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:32:42,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:32:42,367 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_DEVID_NODE [2021-11-23 02:32:42,367 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_DEVID_NODE [2021-11-23 02:32:42,367 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_resend_writes [2021-11-23 02:32:42,368 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_resend_writes [2021-11-23 02:32:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-23 02:32:42,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-23 02:32:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure nfs41_sequence_done [2021-11-23 02:32:42,368 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs41_sequence_done [2021-11-23 02:32:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_free_deviceid [2021-11-23 02:32:42,369 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_free_deviceid [2021-11-23 02:32:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_retry_commit [2021-11-23 02:32:42,369 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_retry_commit [2021-11-23 02:32:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_scan_commit_lists [2021-11-23 02:32:42,369 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_scan_commit_lists [2021-11-23 02:32:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_fenceme [2021-11-23 02:32:42,370 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_fenceme [2021-11-23 02:32:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_pagelist [2021-11-23 02:32:42,370 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_pagelist [2021-11-23 02:32:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_put_lseg [2021-11-23 02:32:42,370 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_put_lseg [2021-11-23 02:32:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-23 02:32:42,370 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-23 02:32:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2021-11-23 02:32:42,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2021-11-23 02:32:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_count_stats [2021-11-23 02:32:42,371 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_count_stats [2021-11-23 02:32:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_read [2021-11-23 02:32:42,371 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_read [2021-11-23 02:32:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_exit [2021-11-23 02:32:42,372 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_exit [2021-11-23 02:32:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:32:42,372 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:32:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-23 02:32:42,372 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-23 02:32:42,373 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_count_iostats [2021-11-23 02:32:42,373 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_count_iostats [2021-11-23 02:32:42,373 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_clear_request_commit [2021-11-23 02:32:42,373 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_clear_request_commit [2021-11-23 02:32:42,373 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 02:32:42,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 02:32:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:32:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:32:42,374 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:32:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_FILEID [2021-11-23 02:32:42,374 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_FILEID [2021-11-23 02:32:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_calc_ds_index [2021-11-23 02:32:42,375 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_calc_ds_index [2021-11-23 02:32:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_get_dserver_offset [2021-11-23 02:32:42,375 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_get_dserver_offset [2021-11-23 02:32:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:32:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_put_deviceid [2021-11-23 02:32:42,375 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_put_deviceid [2021-11-23 02:32:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2021-11-23 02:32:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2021-11-23 02:32:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:32:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_prepare [2021-11-23 02:32:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_prepare [2021-11-23 02:32:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_I [2021-11-23 02:32:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_I [2021-11-23 02:32:42,377 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 02:32:42,377 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 02:32:42,377 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-23 02:32:42,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-23 02:32:42,377 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_put_client [2021-11-23 02:32:42,377 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_put_client [2021-11-23 02:32:42,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 02:32:42,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 02:32:42,378 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_call_done [2021-11-23 02:32:42,378 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_call_done [2021-11-23 02:32:42,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 02:32:42,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 02:32:42,379 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_release [2021-11-23 02:32:42,379 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_release [2021-11-23 02:32:42,379 INFO L130 BoogieDeclarations]: Found specification of procedure nfs41_setup_sequence [2021-11-23 02:32:42,379 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs41_setup_sequence [2021-11-23 02:32:42,379 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 02:32:42,379 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 02:32:42,379 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_commitdata_alloc [2021-11-23 02:32:42,380 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_commitdata_alloc [2021-11-23 02:32:42,380 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_set_scratch_buffer [2021-11-23 02:32:42,380 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_set_scratch_buffer [2021-11-23 02:32:42,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_79 [2021-11-23 02:32:42,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_79 [2021-11-23 02:32:42,380 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_pagelist [2021-11-23 02:32:42,381 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_pagelist [2021-11-23 02:32:42,381 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 02:32:42,381 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 02:32:42,381 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:32:42,381 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:32:42,381 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_call_done [2021-11-23 02:32:42,382 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_call_done [2021-11-23 02:32:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:32:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_fh_array [2021-11-23 02:32:42,382 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_fh_array [2021-11-23 02:32:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_pagelist [2021-11-23 02:32:42,382 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_pagelist [2021-11-23 02:32:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:32:42,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:32:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_80 [2021-11-23 02:32:42,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_80 [2021-11-23 02:32:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_initiate_commit [2021-11-23 02:32:42,383 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_initiate_commit [2021-11-23 02:32:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-23 02:32:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 02:32:42,384 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 02:32:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-23 02:32:42,384 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-23 02:32:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_print_deviceid [2021-11-23 02:32:42,385 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_print_deviceid [2021-11-23 02:32:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 02:32:42,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 02:32:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_update_layout [2021-11-23 02:32:42,385 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_update_layout [2021-11-23 02:32:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 02:32:42,386 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 02:32:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_nfs4filelayout_exit_5_2 [2021-11-23 02:32:42,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_nfs4filelayout_exit_5_2 [2021-11-23 02:32:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_release [2021-11-23 02:32:42,386 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_release [2021-11-23 02:32:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_mark_deviceid_unavailable [2021-11-23 02:32:42,386 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_mark_deviceid_unavailable [2021-11-23 02:32:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_test_devid_unavailable [2021-11-23 02:32:42,387 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_test_devid_unavailable [2021-11-23 02:32:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:32:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 02:32:42,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 02:32:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_prepare [2021-11-23 02:32:42,388 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_prepare [2021-11-23 02:32:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 02:32:42,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 02:32:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_to_mds [2021-11-23 02:32:42,388 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_to_mds [2021-11-23 02:32:43,534 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:32:43,542 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:32:44,084 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:32:46,905 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 02:32:47,113 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:32:48,246 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:32:48,247 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:32:48,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:32:48 BoogieIcfgContainer [2021-11-23 02:32:48,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:32:48,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:32:48,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:32:48,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:32:48,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:32:35" (1/3) ... [2021-11-23 02:32:48,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c036df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:32:48, skipping insertion in model container [2021-11-23 02:32:48,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:41" (2/3) ... [2021-11-23 02:32:48,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c036df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:32:48, skipping insertion in model container [2021-11-23 02:32:48,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:32:48" (3/3) ... [2021-11-23 02:32:48,265 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-23 02:32:48,272 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:32:48,272 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-23 02:32:48,354 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:32:48,367 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 [2021-11-23 02:32:48,367 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-23 02:32:48,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 1742 states, 1020 states have (on average 1.3068627450980392) internal successors, (1333), 1071 states have internal predecessors, (1333), 594 states have call successors, (594), 125 states have call predecessors, (594), 124 states have return successors, (588), 565 states have call predecessors, (588), 588 states have call successors, (588) [2021-11-23 02:32:48,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2021-11-23 02:32:48,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:48,494 INFO L514 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:48,495 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:32:48,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:48,507 INFO L85 PathProgramCache]: Analyzing trace with hash 971470416, now seen corresponding path program 1 times [2021-11-23 02:32:48,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:48,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352342096] [2021-11-23 02:32:48,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:48,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2021-11-23 02:32:49,502 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:49,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352342096] [2021-11-23 02:32:49,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352342096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:49,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:49,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:32:49,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824233031] [2021-11-23 02:32:49,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:49,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:32:49,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:49,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:32:49,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:32:49,572 INFO L87 Difference]: Start difference. First operand has 1742 states, 1020 states have (on average 1.3068627450980392) internal successors, (1333), 1071 states have internal predecessors, (1333), 594 states have call successors, (594), 125 states have call predecessors, (594), 124 states have return successors, (588), 565 states have call predecessors, (588), 588 states have call successors, (588) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-23 02:32:51,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:51,384 INFO L93 Difference]: Finished difference Result 5017 states and 7377 transitions. [2021-11-23 02:32:51,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:32:51,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 355 [2021-11-23 02:32:51,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:51,442 INFO L225 Difference]: With dead ends: 5017 [2021-11-23 02:32:51,442 INFO L226 Difference]: Without dead ends: 3334 [2021-11-23 02:32:51,462 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 [2021-11-23 02:32:51,466 INFO L933 BasicCegarLoop]: 2722 mSDtfsCounter, 2315 mSDsluCounter, 2470 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2315 SdHoareTripleChecker+Valid, 4892 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:51,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2315 Valid, 4892 Invalid, 655 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 02:32:51,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2021-11-23 02:32:51,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 3328. [2021-11-23 02:32:51,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3328 states, 1971 states have (on average 1.3033992897006597) internal successors, (2569), 2071 states have internal predecessors, (2569), 1110 states have call successors, (1110), 244 states have call predecessors, (1110), 243 states have return successors, (1106), 1060 states have call predecessors, (1106), 1106 states have call successors, (1106) [2021-11-23 02:32:52,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3328 states to 3328 states and 4785 transitions. [2021-11-23 02:32:52,011 INFO L78 Accepts]: Start accepts. Automaton has 3328 states and 4785 transitions. Word has length 355 [2021-11-23 02:32:52,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:52,014 INFO L470 AbstractCegarLoop]: Abstraction has 3328 states and 4785 transitions. [2021-11-23 02:32:52,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-23 02:32:52,015 INFO L276 IsEmpty]: Start isEmpty. Operand 3328 states and 4785 transitions. [2021-11-23 02:32:52,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-11-23 02:32:52,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:52,034 INFO L514 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:52,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:32:52,035 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:32:52,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:52,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1934450977, now seen corresponding path program 1 times [2021-11-23 02:32:52,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:52,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533009272] [2021-11-23 02:32:52,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:52,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:52,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2021-11-23 02:32:52,514 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:52,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533009272] [2021-11-23 02:32:52,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533009272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:52,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:52,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:32:52,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588341946] [2021-11-23 02:32:52,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:52,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:32:52,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:52,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:32:52,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:32:52,519 INFO L87 Difference]: Start difference. First operand 3328 states and 4785 transitions. Second operand has 6 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-23 02:32:59,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:59,718 INFO L93 Difference]: Finished difference Result 9811 states and 14080 transitions. [2021-11-23 02:32:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:32:59,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 365 [2021-11-23 02:32:59,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:59,807 INFO L225 Difference]: With dead ends: 9811 [2021-11-23 02:32:59,807 INFO L226 Difference]: Without dead ends: 6552 [2021-11-23 02:32:59,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:32:59,834 INFO L933 BasicCegarLoop]: 3242 mSDtfsCounter, 6255 mSDsluCounter, 7517 mSDsCounter, 0 mSdLazyCounter, 3115 mSolverCounterSat, 1097 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6339 SdHoareTripleChecker+Valid, 9621 SdHoareTripleChecker+Invalid, 4212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1097 IncrementalHoareTripleChecker+Valid, 3115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:59,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6339 Valid, 9621 Invalid, 4212 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1097 Valid, 3115 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-23 02:32:59,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6552 states. [2021-11-23 02:33:00,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6552 to 6474. [2021-11-23 02:33:00,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6474 states, 3855 states have (on average 1.3058365758754864) internal successors, (5034), 4055 states have internal predecessors, (5034), 2126 states have call successors, (2126), 490 states have call predecessors, (2126), 489 states have return successors, (2122), 2024 states have call predecessors, (2122), 2122 states have call successors, (2122) [2021-11-23 02:33:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6474 states to 6474 states and 9282 transitions. [2021-11-23 02:33:00,366 INFO L78 Accepts]: Start accepts. Automaton has 6474 states and 9282 transitions. Word has length 365 [2021-11-23 02:33:00,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:00,368 INFO L470 AbstractCegarLoop]: Abstraction has 6474 states and 9282 transitions. [2021-11-23 02:33:00,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-23 02:33:00,369 INFO L276 IsEmpty]: Start isEmpty. Operand 6474 states and 9282 transitions. [2021-11-23 02:33:00,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-11-23 02:33:00,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:00,378 INFO L514 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:00,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:33:00,379 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:33:00,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:00,380 INFO L85 PathProgramCache]: Analyzing trace with hash -305224842, now seen corresponding path program 1 times [2021-11-23 02:33:00,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:00,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121206176] [2021-11-23 02:33:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:00,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2021-11-23 02:33:00,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:00,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121206176] [2021-11-23 02:33:00,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121206176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:00,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:00,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:33:00,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979797090] [2021-11-23 02:33:00,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:00,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:33:00,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:00,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:33:00,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:33:00,762 INFO L87 Difference]: Start difference. First operand 6474 states and 9282 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-23 02:33:02,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:02,816 INFO L93 Difference]: Finished difference Result 17586 states and 25189 transitions. [2021-11-23 02:33:02,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:33:02,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 369 [2021-11-23 02:33:02,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:02,930 INFO L225 Difference]: With dead ends: 17586 [2021-11-23 02:33:02,931 INFO L226 Difference]: Without dead ends: 11181 [2021-11-23 02:33:02,975 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 [2021-11-23 02:33:02,981 INFO L933 BasicCegarLoop]: 2735 mSDtfsCounter, 2317 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 4891 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:02,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2317 Valid, 4891 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 02:33:03,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11181 states. [2021-11-23 02:33:03,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11181 to 11143. [2021-11-23 02:33:03,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11143 states, 6655 states have (on average 1.3059353869271224) internal successors, (8691), 7005 states have internal predecessors, (8691), 3626 states have call successors, (3626), 859 states have call predecessors, (3626), 858 states have return successors, (3622), 3446 states have call predecessors, (3622), 3622 states have call successors, (3622) [2021-11-23 02:33:03,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11143 states to 11143 states and 15939 transitions. [2021-11-23 02:33:03,899 INFO L78 Accepts]: Start accepts. Automaton has 11143 states and 15939 transitions. Word has length 369 [2021-11-23 02:33:03,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:03,901 INFO L470 AbstractCegarLoop]: Abstraction has 11143 states and 15939 transitions. [2021-11-23 02:33:03,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-23 02:33:03,902 INFO L276 IsEmpty]: Start isEmpty. Operand 11143 states and 15939 transitions. [2021-11-23 02:33:03,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-11-23 02:33:03,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:03,915 INFO L514 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:03,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:33:03,916 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:33:03,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:03,917 INFO L85 PathProgramCache]: Analyzing trace with hash 2109525623, now seen corresponding path program 1 times [2021-11-23 02:33:03,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:03,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733429992] [2021-11-23 02:33:03,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:03,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2021-11-23 02:33:04,334 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:04,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733429992] [2021-11-23 02:33:04,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733429992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:04,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:04,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:33:04,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264702463] [2021-11-23 02:33:04,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:04,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:33:04,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:33:04,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:33:04,341 INFO L87 Difference]: Start difference. First operand 11143 states and 15939 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-23 02:33:06,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:06,754 INFO L93 Difference]: Finished difference Result 31371 states and 44791 transitions. [2021-11-23 02:33:06,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:33:06,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 366 [2021-11-23 02:33:06,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:06,968 INFO L225 Difference]: With dead ends: 31371 [2021-11-23 02:33:06,968 INFO L226 Difference]: Without dead ends: 20297 [2021-11-23 02:33:07,065 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 [2021-11-23 02:33:07,070 INFO L933 BasicCegarLoop]: 2714 mSDtfsCounter, 2275 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2275 SdHoareTripleChecker+Valid, 4855 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:07,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2275 Valid, 4855 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 02:33:07,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20297 states. [2021-11-23 02:33:08,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20297 to 20249. [2021-11-23 02:33:08,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20249 states, 12083 states have (on average 1.3019117768766035) internal successors, (15731), 12743 states have internal predecessors, (15731), 6566 states have call successors, (6566), 1597 states have call predecessors, (6566), 1596 states have return successors, (6562), 6220 states have call predecessors, (6562), 6562 states have call successors, (6562) [2021-11-23 02:33:08,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20249 states to 20249 states and 28859 transitions. [2021-11-23 02:33:08,533 INFO L78 Accepts]: Start accepts. Automaton has 20249 states and 28859 transitions. Word has length 366 [2021-11-23 02:33:08,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:08,536 INFO L470 AbstractCegarLoop]: Abstraction has 20249 states and 28859 transitions. [2021-11-23 02:33:08,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-23 02:33:08,536 INFO L276 IsEmpty]: Start isEmpty. Operand 20249 states and 28859 transitions. [2021-11-23 02:33:08,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2021-11-23 02:33:08,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:08,545 INFO L514 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:08,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:33:08,546 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:33:08,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:08,547 INFO L85 PathProgramCache]: Analyzing trace with hash 746040115, now seen corresponding path program 1 times [2021-11-23 02:33:08,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:08,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059305371] [2021-11-23 02:33:08,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:08,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2021-11-23 02:33:08,781 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:08,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059305371] [2021-11-23 02:33:08,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059305371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:08,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:08,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:33:08,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665163527] [2021-11-23 02:33:08,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:08,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:33:08,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:08,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:33:08,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:33:08,785 INFO L87 Difference]: Start difference. First operand 20249 states and 28859 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-23 02:33:11,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:11,367 INFO L93 Difference]: Finished difference Result 52984 states and 75116 transitions. [2021-11-23 02:33:11,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:33:11,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 367 [2021-11-23 02:33:11,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:11,597 INFO L225 Difference]: With dead ends: 52984 [2021-11-23 02:33:11,598 INFO L226 Difference]: Without dead ends: 32804 [2021-11-23 02:33:11,712 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 [2021-11-23 02:33:11,713 INFO L933 BasicCegarLoop]: 3505 mSDtfsCounter, 2274 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 5646 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:11,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2274 Valid, 5646 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 02:33:11,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32804 states. [2021-11-23 02:33:14,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32804 to 32756. [2021-11-23 02:33:14,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32756 states, 19441 states have (on average 1.2947893626871045) internal successors, (25172), 20602 states have internal predecessors, (25172), 10533 states have call successors, (10533), 2779 states have call predecessors, (10533), 2778 states have return successors, (10529), 9862 states have call predecessors, (10529), 10529 states have call successors, (10529) [2021-11-23 02:33:14,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32756 states to 32756 states and 46234 transitions. [2021-11-23 02:33:14,582 INFO L78 Accepts]: Start accepts. Automaton has 32756 states and 46234 transitions. Word has length 367 [2021-11-23 02:33:14,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:14,583 INFO L470 AbstractCegarLoop]: Abstraction has 32756 states and 46234 transitions. [2021-11-23 02:33:14,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-23 02:33:14,584 INFO L276 IsEmpty]: Start isEmpty. Operand 32756 states and 46234 transitions. [2021-11-23 02:33:14,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-11-23 02:33:14,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:14,592 INFO L514 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:14,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:33:14,593 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:33:14,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:14,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1524565799, now seen corresponding path program 1 times [2021-11-23 02:33:14,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:14,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843732041] [2021-11-23 02:33:14,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:14,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2021-11-23 02:33:15,071 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:15,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843732041] [2021-11-23 02:33:15,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843732041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:15,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:15,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:33:15,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103879215] [2021-11-23 02:33:15,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:15,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:33:15,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:15,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:33:15,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:33:15,074 INFO L87 Difference]: Start difference. First operand 32756 states and 46234 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-23 02:33:18,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:18,975 INFO L93 Difference]: Finished difference Result 93867 states and 132538 transitions. [2021-11-23 02:33:18,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:33:18,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 372 [2021-11-23 02:33:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:19,644 INFO L225 Difference]: With dead ends: 93867 [2021-11-23 02:33:19,644 INFO L226 Difference]: Without dead ends: 61180 [2021-11-23 02:33:19,807 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 [2021-11-23 02:33:19,808 INFO L933 BasicCegarLoop]: 3051 mSDtfsCounter, 2318 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2318 SdHoareTripleChecker+Valid, 5207 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:19,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2318 Valid, 5207 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 02:33:19,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61180 states. [2021-11-23 02:33:23,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61180 to 61136. [2021-11-23 02:33:23,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61136 states, 36462 states have (on average 1.294361252811146) internal successors, (47195), 38549 states have internal predecessors, (47195), 19517 states have call successors, (19517), 5154 states have call predecessors, (19517), 5153 states have return successors, (19513), 18356 states have call predecessors, (19513), 19513 states have call successors, (19513) [2021-11-23 02:33:23,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61136 states to 61136 states and 86225 transitions. [2021-11-23 02:33:23,771 INFO L78 Accepts]: Start accepts. Automaton has 61136 states and 86225 transitions. Word has length 372 [2021-11-23 02:33:23,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:23,772 INFO L470 AbstractCegarLoop]: Abstraction has 61136 states and 86225 transitions. [2021-11-23 02:33:23,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-23 02:33:23,773 INFO L276 IsEmpty]: Start isEmpty. Operand 61136 states and 86225 transitions. [2021-11-23 02:33:23,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2021-11-23 02:33:23,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:23,782 INFO L514 BasicCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 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] [2021-11-23 02:33:23,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:33:23,783 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:33:23,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:23,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2014675730, now seen corresponding path program 1 times [2021-11-23 02:33:23,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:23,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70176640] [2021-11-23 02:33:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:23,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4702 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4702 trivial. 0 not checked. [2021-11-23 02:33:24,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:24,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70176640] [2021-11-23 02:33:24,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70176640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:24,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:24,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:33:24,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786539946] [2021-11-23 02:33:24,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:24,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:33:24,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:24,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:33:24,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:33:24,658 INFO L87 Difference]: Start difference. First operand 61136 states and 86225 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-23 02:33:28,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:28,010 INFO L93 Difference]: Finished difference Result 61142 states and 86230 transitions. [2021-11-23 02:33:28,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:33:28,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 383 [2021-11-23 02:33:28,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:28,405 INFO L225 Difference]: With dead ends: 61142 [2021-11-23 02:33:28,405 INFO L226 Difference]: Without dead ends: 61140 [2021-11-23 02:33:28,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:33:28,446 INFO L933 BasicCegarLoop]: 2174 mSDtfsCounter, 2392 mSDsluCounter, 4952 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2408 SdHoareTripleChecker+Valid, 6504 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:28,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2408 Valid, 6504 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 02:33:28,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61140 states. [2021-11-23 02:33:31,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61140 to 61140. [2021-11-23 02:33:31,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61140 states, 36465 states have (on average 1.2943370355135062) internal successors, (47198), 38552 states have internal predecessors, (47198), 19517 states have call successors, (19517), 5155 states have call predecessors, (19517), 5154 states have return successors, (19513), 18356 states have call predecessors, (19513), 19513 states have call successors, (19513) [2021-11-23 02:33:31,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61140 states to 61140 states and 86228 transitions. [2021-11-23 02:33:31,825 INFO L78 Accepts]: Start accepts. Automaton has 61140 states and 86228 transitions. Word has length 383 [2021-11-23 02:33:31,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:31,826 INFO L470 AbstractCegarLoop]: Abstraction has 61140 states and 86228 transitions. [2021-11-23 02:33:31,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-23 02:33:31,827 INFO L276 IsEmpty]: Start isEmpty. Operand 61140 states and 86228 transitions. [2021-11-23 02:33:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-11-23 02:33:31,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:31,839 INFO L514 BasicCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 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] [2021-11-23 02:33:31,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:33:31,839 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:33:31,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:31,840 INFO L85 PathProgramCache]: Analyzing trace with hash -315231652, now seen corresponding path program 1 times [2021-11-23 02:33:31,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:31,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929709407] [2021-11-23 02:33:31,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:31,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:32,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4702 trivial. 0 not checked. [2021-11-23 02:33:32,238 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:32,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929709407] [2021-11-23 02:33:32,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929709407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:32,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:32,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:33:32,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279996946] [2021-11-23 02:33:32,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:32,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:33:32,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:32,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:33:32,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:33:32,241 INFO L87 Difference]: Start difference. First operand 61140 states and 86228 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-11-23 02:33:35,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:35,405 INFO L93 Difference]: Finished difference Result 61146 states and 86233 transitions. [2021-11-23 02:33:35,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:33:35,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 388 [2021-11-23 02:33:35,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:35,739 INFO L225 Difference]: With dead ends: 61146 [2021-11-23 02:33:35,739 INFO L226 Difference]: Without dead ends: 61144 [2021-11-23 02:33:35,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:33:35,770 INFO L933 BasicCegarLoop]: 2177 mSDtfsCounter, 2387 mSDsluCounter, 4952 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 6507 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:35,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2402 Valid, 6507 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 02:33:35,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61144 states. [2021-11-23 02:33:38,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61144 to 61144. [2021-11-23 02:33:38,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61144 states, 36468 states have (on average 1.294312822200285) internal successors, (47201), 38555 states have internal predecessors, (47201), 19517 states have call successors, (19517), 5156 states have call predecessors, (19517), 5155 states have return successors, (19513), 18356 states have call predecessors, (19513), 19513 states have call successors, (19513) [2021-11-23 02:33:39,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61144 states to 61144 states and 86231 transitions. [2021-11-23 02:33:39,082 INFO L78 Accepts]: Start accepts. Automaton has 61144 states and 86231 transitions. Word has length 388 [2021-11-23 02:33:39,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:39,083 INFO L470 AbstractCegarLoop]: Abstraction has 61144 states and 86231 transitions. [2021-11-23 02:33:39,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-11-23 02:33:39,084 INFO L276 IsEmpty]: Start isEmpty. Operand 61144 states and 86231 transitions. [2021-11-23 02:33:39,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2021-11-23 02:33:39,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:39,093 INFO L514 BasicCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:39,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:33:39,094 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:33:39,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:39,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1805215470, now seen corresponding path program 1 times [2021-11-23 02:33:39,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:39,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913172737] [2021-11-23 02:33:39,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:39,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4710 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4706 trivial. 0 not checked. [2021-11-23 02:33:39,466 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:39,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913172737] [2021-11-23 02:33:39,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913172737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:39,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:39,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:33:39,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507331735] [2021-11-23 02:33:39,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:39,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:33:39,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:39,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:33:39,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:33:39,471 INFO L87 Difference]: Start difference. First operand 61144 states and 86231 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-23 02:33:42,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:42,762 INFO L93 Difference]: Finished difference Result 61150 states and 86236 transitions. [2021-11-23 02:33:42,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:33:42,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 393 [2021-11-23 02:33:42,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:43,121 INFO L225 Difference]: With dead ends: 61150 [2021-11-23 02:33:43,121 INFO L226 Difference]: Without dead ends: 61148 [2021-11-23 02:33:43,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:33:43,162 INFO L933 BasicCegarLoop]: 2177 mSDtfsCounter, 2387 mSDsluCounter, 4952 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 6507 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:43,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2401 Valid, 6507 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 02:33:43,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61148 states. [2021-11-23 02:33:46,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61148 to 61148. [2021-11-23 02:33:46,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61148 states, 36471 states have (on average 1.2942886128704998) internal successors, (47204), 38558 states have internal predecessors, (47204), 19517 states have call successors, (19517), 5157 states have call predecessors, (19517), 5156 states have return successors, (19513), 18356 states have call predecessors, (19513), 19513 states have call successors, (19513) [2021-11-23 02:33:46,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61148 states to 61148 states and 86234 transitions. [2021-11-23 02:33:46,667 INFO L78 Accepts]: Start accepts. Automaton has 61148 states and 86234 transitions. Word has length 393 [2021-11-23 02:33:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:46,668 INFO L470 AbstractCegarLoop]: Abstraction has 61148 states and 86234 transitions. [2021-11-23 02:33:46,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-23 02:33:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 61148 states and 86234 transitions. [2021-11-23 02:33:46,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2021-11-23 02:33:46,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:46,674 INFO L514 BasicCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:46,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:33:46,675 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:33:46,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:46,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1243844066, now seen corresponding path program 1 times [2021-11-23 02:33:46,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:46,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549907466] [2021-11-23 02:33:46,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:46,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:46,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4721 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4715 trivial. 0 not checked. [2021-11-23 02:33:46,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:46,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549907466] [2021-11-23 02:33:46,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549907466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:46,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:46,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:33:46,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975206072] [2021-11-23 02:33:46,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:47,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:33:47,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:47,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:33:47,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:33:47,001 INFO L87 Difference]: Start difference. First operand 61148 states and 86234 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2021-11-23 02:33:50,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:50,195 INFO L93 Difference]: Finished difference Result 61154 states and 86239 transitions. [2021-11-23 02:33:50,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:33:50,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 399 [2021-11-23 02:33:50,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:50,466 INFO L225 Difference]: With dead ends: 61154 [2021-11-23 02:33:50,467 INFO L226 Difference]: Without dead ends: 61152 [2021-11-23 02:33:50,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:33:50,500 INFO L933 BasicCegarLoop]: 2177 mSDtfsCounter, 2387 mSDsluCounter, 4952 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 6507 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:50,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2400 Valid, 6507 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:33:50,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61152 states. [2021-11-23 02:33:53,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61152 to 61152. [2021-11-23 02:33:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61152 states, 36474 states have (on average 1.2942644075231673) internal successors, (47207), 38561 states have internal predecessors, (47207), 19517 states have call successors, (19517), 5158 states have call predecessors, (19517), 5157 states have return successors, (19513), 18356 states have call predecessors, (19513), 19513 states have call successors, (19513) [2021-11-23 02:33:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61152 states to 61152 states and 86237 transitions. [2021-11-23 02:33:53,599 INFO L78 Accepts]: Start accepts. Automaton has 61152 states and 86237 transitions. Word has length 399 [2021-11-23 02:33:53,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:53,601 INFO L470 AbstractCegarLoop]: Abstraction has 61152 states and 86237 transitions. [2021-11-23 02:33:53,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2021-11-23 02:33:53,601 INFO L276 IsEmpty]: Start isEmpty. Operand 61152 states and 86237 transitions. [2021-11-23 02:33:53,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-11-23 02:33:53,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:53,608 INFO L514 BasicCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:53,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:33:53,608 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:33:53,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:53,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1482329908, now seen corresponding path program 1 times [2021-11-23 02:33:53,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:53,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635630357] [2021-11-23 02:33:53,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:53,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4735 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4727 trivial. 0 not checked. [2021-11-23 02:33:54,376 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:54,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635630357] [2021-11-23 02:33:54,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635630357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:54,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:54,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:33:54,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288874766] [2021-11-23 02:33:54,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:54,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:33:54,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:54,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:33:54,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:33:54,380 INFO L87 Difference]: Start difference. First operand 61152 states and 86237 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-23 02:33:57,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:57,508 INFO L93 Difference]: Finished difference Result 61158 states and 86242 transitions. [2021-11-23 02:33:57,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:33:57,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 404 [2021-11-23 02:33:57,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:57,739 INFO L225 Difference]: With dead ends: 61158 [2021-11-23 02:33:57,740 INFO L226 Difference]: Without dead ends: 61156 [2021-11-23 02:33:57,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:33:57,763 INFO L933 BasicCegarLoop]: 2177 mSDtfsCounter, 2387 mSDsluCounter, 4952 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2399 SdHoareTripleChecker+Valid, 6507 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:57,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2399 Valid, 6507 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:33:57,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61156 states.