./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493672d2-2bf8-4b05-9e91-aca90b57be40/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493672d2-2bf8-4b05-9e91-aca90b57be40/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493672d2-2bf8-4b05-9e91-aca90b57be40/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493672d2-2bf8-4b05-9e91-aca90b57be40/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493672d2-2bf8-4b05-9e91-aca90b57be40/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493672d2-2bf8-4b05-9e91-aca90b57be40/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a3d1583250bab7d5c6e3cae163663e7ac3704cf0fb6c32d7f6b8a0a0c30f1a49 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:18:48,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:18:48,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:18:48,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:18:48,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:18:48,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:18:48,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:18:48,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:18:48,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:18:48,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:18:48,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:18:48,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:18:48,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:18:48,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:18:48,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:18:48,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:18:48,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:18:48,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:18:48,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:18:48,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:18:48,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:18:48,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:18:48,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:18:48,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:18:48,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:18:48,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:18:48,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:18:48,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:18:48,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:18:48,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:18:48,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:18:48,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:18:48,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:18:48,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:18:48,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:18:48,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:18:48,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:18:48,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:18:48,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:18:48,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:18:48,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:18:48,155 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493672d2-2bf8-4b05-9e91-aca90b57be40/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:18:48,203 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:18:48,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:18:48,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:18:48,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:18:48,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:18:48,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:18:48,206 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:18:48,206 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:18:48,207 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:18:48,207 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:18:48,207 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:18:48,207 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:18:48,208 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:18:48,208 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:18:48,208 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:18:48,208 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:18:48,209 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:18:48,209 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:18:48,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:18:48,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:18:48,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:18:48,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:18:48,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:18:48,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:18:48,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:18:48,211 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:18:48,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:18:48,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:18:48,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:18:48,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:18:48,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:18:48,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:18:48,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:18:48,214 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:18:48,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:18:48,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:18:48,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:18:48,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:18:48,215 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_493672d2-2bf8-4b05-9e91-aca90b57be40/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493672d2-2bf8-4b05-9e91-aca90b57be40/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3d1583250bab7d5c6e3cae163663e7ac3704cf0fb6c32d7f6b8a0a0c30f1a49 [2021-11-21 01:18:48,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:18:48,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:18:48,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:18:48,512 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:18:48,513 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:18:48,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493672d2-2bf8-4b05-9e91-aca90b57be40/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-21 01:18:48,600 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493672d2-2bf8-4b05-9e91-aca90b57be40/bin/utaipan-TEXQjIfE4P/data/6d9b3f818/3285991791004d8289eb223401d54b4b/FLAGb17da4f45 [2021-11-21 01:18:50,079 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:18:50,080 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493672d2-2bf8-4b05-9e91-aca90b57be40/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-21 01:18:50,187 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493672d2-2bf8-4b05-9e91-aca90b57be40/bin/utaipan-TEXQjIfE4P/data/6d9b3f818/3285991791004d8289eb223401d54b4b/FLAGb17da4f45 [2021-11-21 01:18:50,580 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493672d2-2bf8-4b05-9e91-aca90b57be40/bin/utaipan-TEXQjIfE4P/data/6d9b3f818/3285991791004d8289eb223401d54b4b [2021-11-21 01:18:50,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:18:50,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:18:50,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:18:50,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:18:50,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:18:50,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:18:50" (1/1) ... [2021-11-21 01:18:50,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750a3518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:50, skipping insertion in model container [2021-11-21 01:18:50,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:18:50" (1/1) ... [2021-11-21 01:18:50,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:18:50,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:18:59,333 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_493672d2-2bf8-4b05-9e91-aca90b57be40/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752340,752353] [2021-11-21 01:18:59,337 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_493672d2-2bf8-4b05-9e91-aca90b57be40/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752506,752519] [2021-11-21 01:18:59,337 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_493672d2-2bf8-4b05-9e91-aca90b57be40/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752670,752683] [2021-11-21 01:18:59,338 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_493672d2-2bf8-4b05-9e91-aca90b57be40/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752835,752848] [2021-11-21 01:18:59,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:18:59,458 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:19:00,410 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_493672d2-2bf8-4b05-9e91-aca90b57be40/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752340,752353] [2021-11-21 01:19:00,410 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_493672d2-2bf8-4b05-9e91-aca90b57be40/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752506,752519] [2021-11-21 01:19:00,411 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_493672d2-2bf8-4b05-9e91-aca90b57be40/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752670,752683] [2021-11-21 01:19:00,411 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_493672d2-2bf8-4b05-9e91-aca90b57be40/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752835,752848] [2021-11-21 01:19:00,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:19:00,789 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:19:00,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:00 WrapperNode [2021-11-21 01:19:00,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:19:00,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:19:00,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:19:00,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:19:00,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:00" (1/1) ... [2021-11-21 01:19:01,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:00" (1/1) ... [2021-11-21 01:19:01,685 INFO L137 Inliner]: procedures = 660, calls = 11540, calls flagged for inlining = 344, calls inlined = 236, statements flattened = 12774 [2021-11-21 01:19:01,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:19:01,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:19:01,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:19:01,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:19:01,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:00" (1/1) ... [2021-11-21 01:19:01,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:00" (1/1) ... [2021-11-21 01:19:01,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:00" (1/1) ... [2021-11-21 01:19:01,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:00" (1/1) ... [2021-11-21 01:19:02,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:00" (1/1) ... [2021-11-21 01:19:02,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:00" (1/1) ... [2021-11-21 01:19:02,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:00" (1/1) ... [2021-11-21 01:19:02,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:19:02,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:19:02,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:19:02,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:19:02,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:00" (1/1) ... [2021-11-21 01:19:02,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:19:02,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493672d2-2bf8-4b05-9e91-aca90b57be40/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:19:02,615 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493672d2-2bf8-4b05-9e91-aca90b57be40/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:19:02,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493672d2-2bf8-4b05-9e91-aca90b57be40/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:19:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 01:19:02,683 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 01:19:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:19:02,683 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:19:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure read_register [2021-11-21 01:19:02,684 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register [2021-11-21 01:19:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_data [2021-11-21 01:19:02,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_data [2021-11-21 01:19:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure write_register_byte [2021-11-21 01:19:02,684 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register_byte [2021-11-21 01:19:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:19:02,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:19:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 01:19:02,685 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 01:19:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-11-21 01:19:02,686 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-11-21 01:19:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_release_firmware [2021-11-21 01:19:02,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_release_firmware [2021-11-21 01:19:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_configure_security [2021-11-21 01:19:02,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_configure_security [2021-11-21 01:19:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 01:19:02,687 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 01:19:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-21 01:19:02,687 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-21 01:19:02,687 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_adapter [2021-11-21 01:19:02,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_adapter [2021-11-21 01:19:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_security_information [2021-11-21 01:19:02,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_security_information [2021-11-21 01:19:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-21 01:19:02,689 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-21 01:19:02,689 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:19:02,689 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:19:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 01:19:02,690 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 01:19:02,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:19:02,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:19:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 01:19:02,691 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 01:19:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:19:02,692 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:19:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mandatory_bssid [2021-11-21 01:19:02,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mandatory_bssid [2021-11-21 01:19:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:19:02,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:19:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 01:19:02,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 01:19:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:19:02,695 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:19:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_rfkill_set_hw_state [2021-11-21 01:19:02,695 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_rfkill_set_hw_state [2021-11-21 01:19:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_unregister [2021-11-21 01:19:02,696 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_unregister [2021-11-21 01:19:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_adapter [2021-11-21 01:19:02,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_adapter [2021-11-21 01:19:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 01:19:02,698 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 01:19:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:19:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_send_command [2021-11-21 01:19:02,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_send_command [2021-11-21 01:19:02,699 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-21 01:19:02,699 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-21 01:19:02,699 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_word [2021-11-21 01:19:02,699 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_word [2021-11-21 01:19:02,699 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 01:19:02,700 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 01:19:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure isr_scan_complete [2021-11-21 01:19:02,700 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_scan_complete [2021-11-21 01:19:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_power_mode [2021-11-21 01:19:02,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_power_mode [2021-11-21 01:19:02,701 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:19:02,701 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:19:02,702 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_byte [2021-11-21 01:19:02,702 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_byte [2021-11-21 01:19:02,702 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 01:19:02,703 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 01:19:02,703 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-21 01:19:02,703 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-21 01:19:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:19:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:19:02,704 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:19:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-21 01:19:02,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-21 01:19:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:19:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_dword [2021-11-21 01:19:02,706 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_dword [2021-11-21 01:19:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:19:02,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:19:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_channel [2021-11-21 01:19:02,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_channel [2021-11-21 01:19:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:19:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 01:19:02,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 01:19:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_up [2021-11-21 01:19:02,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_up [2021-11-21 01:19:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_commands [2021-11-21 01:19:02,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_commands [2021-11-21 01:19:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:19:02,710 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:19:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 01:19:02,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 01:19:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:19:02,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:19:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:19:02,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:19:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-21 01:19:02,713 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-21 01:19:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 01:19:02,717 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 01:19:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_adapter [2021-11-21 01:19:02,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_adapter [2021-11-21 01:19:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:19:02,718 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:19:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_action_mutex_of_ipw2100_priv [2021-11-21 01:19:02,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_action_mutex_of_ipw2100_priv [2021-11-21 01:19:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_scan_options [2021-11-21 01:19:02,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_scan_options [2021-11-21 01:19:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_txb_free [2021-11-21 01:19:02,727 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_txb_free [2021-11-21 01:19:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_fatalerror [2021-11-21 01:19:02,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_fatalerror [2021-11-21 01:19:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:19:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:19:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_rates [2021-11-21 01:19:02,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_rates [2021-11-21 01:19:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:19:02,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:19:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure print_ssid [2021-11-21 01:19:02,729 INFO L138 BoogieDeclarations]: Found implementation of procedure print_ssid [2021-11-21 01:19:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:19:02,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:19:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:19:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-21 01:19:02,729 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-21 01:19:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 01:19:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_snapshot_free [2021-11-21 01:19:02,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_snapshot_free [2021-11-21 01:19:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:19:02,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:19:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure snprint_line [2021-11-21 01:19:02,730 INFO L138 BoogieDeclarations]: Found implementation of procedure snprint_line [2021-11-21 01:19:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 01:19:02,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 01:19:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reset [2021-11-21 01:19:02,731 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_reset [2021-11-21 01:19:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 01:19:02,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 01:19:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:19:02,731 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:19:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure sw_reset_and_clock [2021-11-21 01:19:02,732 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_reset_and_clock [2021-11-21 01:19:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_interrupts [2021-11-21 01:19:02,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_interrupts [2021-11-21 01:19:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-21 01:19:02,732 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-21 01:19:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_resume [2021-11-21 01:19:02,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_resume [2021-11-21 01:19:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-11-21 01:19:02,733 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-11-21 01:19:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:19:02,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:19:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2021-11-21 01:19:02,733 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2021-11-21 01:19:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_pci_remove_one [2021-11-21 01:19:02,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_pci_remove_one [2021-11-21 01:19:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_free [2021-11-21 01:19:02,734 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_free [2021-11-21 01:19:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-21 01:19:02,734 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-21 01:19:02,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:19:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:19:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:19:02,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:19:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_alloc_skb [2021-11-21 01:19:02,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_alloc_skb [2021-11-21 01:19:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-21 01:19:02,735 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-21 01:19:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_get_ordinal [2021-11-21 01:19:02,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_get_ordinal [2021-11-21 01:19:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_stop_adapter [2021-11-21 01:19:02,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_stop_adapter [2021-11-21 01:19:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure write_register [2021-11-21 01:19:02,736 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register [2021-11-21 01:19:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_set_gpio [2021-11-21 01:19:02,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_set_gpio [2021-11-21 01:19:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 01:19:02,737 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 01:19:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_down [2021-11-21 01:19:02,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_down [2021-11-21 01:19:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_adapter_mutex_of_ipw2100_priv [2021-11-21 01:19:02,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_adapter_mutex_of_ipw2100_priv [2021-11-21 01:19:02,738 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_close [2021-11-21 01:19:02,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_close [2021-11-21 01:19:02,738 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wait_for_card_state [2021-11-21 01:19:02,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wait_for_card_state [2021-11-21 01:19:02,738 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_rf_kill [2021-11-21 01:19:02,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_rf_kill [2021-11-21 01:19:02,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 01:19:02,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 01:19:02,739 INFO L130 BoogieDeclarations]: Found specification of procedure read_register_byte [2021-11-21 01:19:02,739 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register_byte [2021-11-21 01:19:02,739 INFO L130 BoogieDeclarations]: Found specification of procedure status_queue_free [2021-11-21 01:19:02,739 INFO L138 BoogieDeclarations]: Found implementation of procedure status_queue_free [2021-11-21 01:19:02,739 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 01:19:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 01:19:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:19:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:19:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 01:19:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 01:19:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rx_free [2021-11-21 01:19:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rx_free [2021-11-21 01:19:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-21 01:19:02,741 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-21 01:19:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-21 01:19:02,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-21 01:19:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:19:02,741 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:19:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-21 01:19:02,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-21 01:19:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:19:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure mod_delayed_work [2021-11-21 01:19:02,742 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_delayed_work [2021-11-21 01:19:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:19:02,742 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:19:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_shutdown [2021-11-21 01:19:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_shutdown [2021-11-21 01:19:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:19:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_word [2021-11-21 01:19:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_word [2021-11-21 01:19:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_association_lost [2021-11-21 01:19:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_association_lost [2021-11-21 01:19:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_free [2021-11-21 01:19:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_free [2021-11-21 01:19:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mac_address [2021-11-21 01:19:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mac_address [2021-11-21 01:19:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_essid [2021-11-21 01:19:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_essid [2021-11-21 01:19:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-21 01:19:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-21 01:19:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:19:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_interrupts [2021-11-21 01:19:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_interrupts [2021-11-21 01:19:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-21 01:19:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-21 01:19:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-21 01:19:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-21 01:19:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_rts_threshold [2021-11-21 01:19:02,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_rts_threshold [2021-11-21 01:19:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_byte [2021-11-21 01:19:02,746 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_byte [2021-11-21 01:19:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:19:02,746 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:19:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure free_libipw [2021-11-21 01:19:02,746 INFO L138 BoogieDeclarations]: Found implementation of procedure free_libipw [2021-11-21 01:19:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:19:02,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:19:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 01:19:02,747 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 01:19:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 01:19:02,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 01:19:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_msg_free [2021-11-21 01:19:02,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_msg_free [2021-11-21 01:19:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure printk_buf [2021-11-21 01:19:02,748 INFO L138 BoogieDeclarations]: Found implementation of procedure printk_buf [2021-11-21 01:19:02,748 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_ethtool_get_drvinfo [2021-11-21 01:19:02,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_ethtool_get_drvinfo [2021-11-21 01:19:02,748 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-21 01:19:02,748 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-21 01:19:02,748 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_power [2021-11-21 01:19:02,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_power [2021-11-21 01:19:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-21 01:19:02,749 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-21 01:19:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-21 01:19:02,749 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-21 01:19:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 01:19:02,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 01:19:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 01:19:02,749 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 01:19:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-21 01:19:02,750 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-21 01:19:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_system_config [2021-11-21 01:19:02,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_system_config [2021-11-21 01:19:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_kill_works [2021-11-21 01:19:02,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_kill_works [2021-11-21 01:19:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-21 01:19:02,751 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2021-11-21 01:19:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:19:02,751 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:19:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 01:19:02,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 01:19:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:19:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_free [2021-11-21 01:19:02,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_free [2021-11-21 01:19:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:19:02,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:19:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure rf_kill_active [2021-11-21 01:19:02,752 INFO L138 BoogieDeclarations]: Found implementation of procedure rf_kill_active [2021-11-21 01:19:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure get_seconds [2021-11-21 01:19:02,752 INFO L138 BoogieDeclarations]: Found implementation of procedure get_seconds [2021-11-21 01:19:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-21 01:19:02,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-21 01:19:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_allocate [2021-11-21 01:19:02,753 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_allocate [2021-11-21 01:19:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:19:02,753 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:19:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_priv [2021-11-21 01:19:02,753 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_priv [2021-11-21 01:19:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-21 01:19:02,754 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-21 01:19:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-21 01:19:02,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-21 01:19:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_timeout [2021-11-21 01:19:02,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_timeout [2021-11-21 01:19:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_action_mutex_of_ipw2100_priv [2021-11-21 01:19:02,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_action_mutex_of_ipw2100_priv [2021-11-21 01:19:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_adapter_mutex_of_ipw2100_priv [2021-11-21 01:19:02,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_adapter_mutex_of_ipw2100_priv [2021-11-21 01:19:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:19:02,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:19:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-21 01:19:02,755 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-21 01:19:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-21 01:19:02,755 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-21 01:19:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-21 01:19:02,756 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-21 01:19:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-21 01:19:02,756 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-21 01:19:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_open [2021-11-21 01:19:02,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_open [2021-11-21 01:19:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 01:19:02,756 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 01:19:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_initialize [2021-11-21 01:19:02,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_initialize [2021-11-21 01:19:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-21 01:19:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure pm_qos_update_request [2021-11-21 01:19:02,757 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_qos_update_request [2021-11-21 01:19:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_associated [2021-11-21 01:19:02,757 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_associated [2021-11-21 01:19:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:19:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_scanning [2021-11-21 01:19:02,758 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_scanning [2021-11-21 01:19:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_dword [2021-11-21 01:19:02,758 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_dword [2021-11-21 01:19:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:19:02,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:19:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-21 01:19:02,759 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-21 01:19:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_initialize [2021-11-21 01:19:02,759 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_initialize [2021-11-21 01:19:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_start_scan [2021-11-21 01:19:02,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_start_scan [2021-11-21 01:19:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-21 01:19:02,759 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-21 01:19:04,386 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:19:04,397 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:19:19,849 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:21:45,910 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:21:50,911 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:21:50,911 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 01:21:50,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:21:50 BoogieIcfgContainer [2021-11-21 01:21:50,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:21:50,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:21:50,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:21:50,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:21:50,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:18:50" (1/3) ... [2021-11-21 01:21:50,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc0626c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:21:50, skipping insertion in model container [2021-11-21 01:21:50,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:00" (2/3) ... [2021-11-21 01:21:50,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc0626c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:21:50, skipping insertion in model container [2021-11-21 01:21:50,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:21:50" (3/3) ... [2021-11-21 01:21:50,927 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-21 01:21:50,932 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:21:50,933 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 01:21:51,002 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:21:51,010 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:21:51,010 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 01:21:51,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 2665 states, 1654 states have (on average 1.3162031438935913) internal successors, (2177), 1680 states have internal predecessors, (2177), 841 states have call successors, (841), 167 states have call predecessors, (841), 166 states have return successors, (837), 836 states have call predecessors, (837), 837 states have call successors, (837) [2021-11-21 01:21:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-21 01:21:51,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:21:51,112 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-21 01:21:51,113 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:21:51,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:21:51,119 INFO L85 PathProgramCache]: Analyzing trace with hash 313106682, now seen corresponding path program 1 times [2021-11-21 01:21:51,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:21:51,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169019063] [2021-11-21 01:21:51,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:21:51,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:21:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:21:52,658 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 01:21:52,659 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:21:52,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169019063] [2021-11-21 01:21:52,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169019063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:21:52,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:21:52,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:21:52,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092616394] [2021-11-21 01:21:52,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:21:52,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:21:52,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:21:52,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:21:52,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:21:52,741 INFO L87 Difference]: Start difference. First operand has 2665 states, 1654 states have (on average 1.3162031438935913) internal successors, (2177), 1680 states have internal predecessors, (2177), 841 states have call successors, (841), 167 states have call predecessors, (841), 166 states have return successors, (837), 836 states have call predecessors, (837), 837 states have call successors, (837) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:21:57,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:21:59,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:22:02,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:22:05,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:10,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:13,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:16,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:18,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:26,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:30,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:33,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:35,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:38,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:40,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:42,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:44,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:44,233 INFO L93 Difference]: Finished difference Result 7322 states and 10685 transitions. [2021-11-21 01:22:44,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:22:44,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2021-11-21 01:22:44,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:44,305 INFO L225 Difference]: With dead ends: 7322 [2021-11-21 01:22:44,305 INFO L226 Difference]: Without dead ends: 4660 [2021-11-21 01:22:44,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:22:44,340 INFO L933 BasicCegarLoop]: 4657 mSDtfsCounter, 3011 mSDsluCounter, 14032 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 4 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3023 SdHoareTripleChecker+Valid, 17225 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:44,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3023 Valid, 17225 Invalid, 2018 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1999 Invalid, 15 Unknown, 0 Unchecked, 50.7s Time] [2021-11-21 01:22:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4660 states. [2021-11-21 01:22:44,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4660 to 4646. [2021-11-21 01:22:44,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4646 states, 2878 states have (on average 1.3113273106323835) internal successors, (3774), 2929 states have internal predecessors, (3774), 1461 states have call successors, (1461), 309 states have call predecessors, (1461), 304 states have return successors, (1458), 1443 states have call predecessors, (1458), 1455 states have call successors, (1458) [2021-11-21 01:22:44,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4646 states to 4646 states and 6693 transitions. [2021-11-21 01:22:44,799 INFO L78 Accepts]: Start accepts. Automaton has 4646 states and 6693 transitions. Word has length 35 [2021-11-21 01:22:44,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:44,800 INFO L470 AbstractCegarLoop]: Abstraction has 4646 states and 6693 transitions. [2021-11-21 01:22:44,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:22:44,801 INFO L276 IsEmpty]: Start isEmpty. Operand 4646 states and 6693 transitions. [2021-11-21 01:22:44,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-21 01:22:44,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:44,804 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-21 01:22:44,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:22:44,804 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:22:44,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:44,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1527879333, now seen corresponding path program 1 times [2021-11-21 01:22:44,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:44,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224053846] [2021-11-21 01:22:44,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:44,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:45,697 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 01:22:45,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:45,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224053846] [2021-11-21 01:22:45,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224053846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:45,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:22:45,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:22:45,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696295357] [2021-11-21 01:22:45,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:45,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:22:45,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:45,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:22:45,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:22:45,701 INFO L87 Difference]: Start difference. First operand 4646 states and 6693 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:22:49,534 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:51,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:55,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:22:56,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:22:57,801 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:22:59,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:23:00,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:23:01,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:23:03,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:23:06,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:10,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:11,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:18,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:21,630 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:25,791 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:28,476 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:30,840 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:33,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:35,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:38,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:39,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:23:39,731 INFO L93 Difference]: Finished difference Result 9005 states and 13028 transitions. [2021-11-21 01:23:39,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:23:39,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 40 [2021-11-21 01:23:39,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:23:39,830 INFO L225 Difference]: With dead ends: 9005 [2021-11-21 01:23:39,831 INFO L226 Difference]: Without dead ends: 9003 [2021-11-21 01:23:39,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:23:39,840 INFO L933 BasicCegarLoop]: 4549 mSDtfsCounter, 3542 mSDsluCounter, 13819 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 3 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3547 SdHoareTripleChecker+Valid, 17012 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:23:39,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3547 Valid, 17012 Invalid, 1846 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1832 Invalid, 11 Unknown, 0 Unchecked, 53.4s Time] [2021-11-21 01:23:39,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9003 states. [2021-11-21 01:23:40,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9003 to 8982. [2021-11-21 01:23:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8982 states, 5566 states have (on average 1.3102766798418972) internal successors, (7293), 5665 states have internal predecessors, (7293), 2817 states have call successors, (2817), 606 states have call predecessors, (2817), 596 states have return successors, (2890), 2781 states have call predecessors, (2890), 2805 states have call successors, (2890) [2021-11-21 01:23:40,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8982 states to 8982 states and 13000 transitions. [2021-11-21 01:23:40,729 INFO L78 Accepts]: Start accepts. Automaton has 8982 states and 13000 transitions. Word has length 40 [2021-11-21 01:23:40,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:23:40,730 INFO L470 AbstractCegarLoop]: Abstraction has 8982 states and 13000 transitions. [2021-11-21 01:23:40,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:23:40,732 INFO L276 IsEmpty]: Start isEmpty. Operand 8982 states and 13000 transitions. [2021-11-21 01:23:40,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-21 01:23:40,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:23:40,742 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-21 01:23:40,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:23:40,743 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:23:40,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:23:40,744 INFO L85 PathProgramCache]: Analyzing trace with hash -871772838, now seen corresponding path program 1 times [2021-11-21 01:23:40,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:23:40,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681262935] [2021-11-21 01:23:40,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:23:40,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:23:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:23:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:23:41,847 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:23:41,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681262935] [2021-11-21 01:23:41,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681262935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:23:41,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:23:41,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:23:41,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650504907] [2021-11-21 01:23:41,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:23:41,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:23:41,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:23:41,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:23:41,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:23:41,850 INFO L87 Difference]: Start difference. First operand 8982 states and 13000 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 01:23:45,569 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:47,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:49,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:23:54,673 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:23:58,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:02,663 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:09,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:24:12,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:16,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:18,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:21,238 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:23,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:26,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:28,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:29,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:24:29,834 INFO L93 Difference]: Finished difference Result 15436 states and 22273 transitions. [2021-11-21 01:24:29,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:24:29,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2021-11-21 01:24:29,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:24:29,986 INFO L225 Difference]: With dead ends: 15436 [2021-11-21 01:24:29,987 INFO L226 Difference]: Without dead ends: 15434 [2021-11-21 01:24:30,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:24:30,002 INFO L933 BasicCegarLoop]: 4126 mSDtfsCounter, 3180 mSDsluCounter, 12922 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 2 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3187 SdHoareTripleChecker+Valid, 15734 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:24:30,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3187 Valid, 15734 Invalid, 1780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1765 Invalid, 13 Unknown, 0 Unchecked, 47.4s Time] [2021-11-21 01:24:30,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15434 states. [2021-11-21 01:24:31,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15434 to 15417. [2021-11-21 01:24:31,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15417 states, 9552 states have (on average 1.3082077051926297) internal successors, (12496), 9706 states have internal predecessors, (12496), 4819 states have call successors, (4819), 1060 states have call predecessors, (4819), 1043 states have return successors, (4938), 4763 states have call predecessors, (4938), 4801 states have call successors, (4938) [2021-11-21 01:24:31,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15417 states to 15417 states and 22253 transitions. [2021-11-21 01:24:31,218 INFO L78 Accepts]: Start accepts. Automaton has 15417 states and 22253 transitions. Word has length 45 [2021-11-21 01:24:31,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:24:31,219 INFO L470 AbstractCegarLoop]: Abstraction has 15417 states and 22253 transitions. [2021-11-21 01:24:31,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 01:24:31,219 INFO L276 IsEmpty]: Start isEmpty. Operand 15417 states and 22253 transitions. [2021-11-21 01:24:31,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-21 01:24:31,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:24:31,221 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2021-11-21 01:24:31,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:24:31,221 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:24:31,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:24:31,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2133514117, now seen corresponding path program 1 times [2021-11-21 01:24:31,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:24:31,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785497822] [2021-11-21 01:24:31,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:24:31,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:24:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:24:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-21 01:24:32,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:24:32,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785497822] [2021-11-21 01:24:32,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785497822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:24:32,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:24:32,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:24:32,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666287907] [2021-11-21 01:24:32,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:24:32,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:24:32,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:24:32,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:24:32,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:24:32,233 INFO L87 Difference]: Start difference. First operand 15417 states and 22253 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-21 01:24:36,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:40,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:24:43,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:24:46,093 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:50,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:52,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:24:58,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:25:01,663 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:05,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:07,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:10,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:12,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:15,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:17,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:18,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:25:18,871 INFO L93 Difference]: Finished difference Result 15556 states and 22418 transitions. [2021-11-21 01:25:18,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:25:18,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2021-11-21 01:25:18,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:25:18,960 INFO L225 Difference]: With dead ends: 15556 [2021-11-21 01:25:18,960 INFO L226 Difference]: Without dead ends: 15552 [2021-11-21 01:25:18,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:25:18,974 INFO L933 BasicCegarLoop]: 4129 mSDtfsCounter, 3131 mSDsluCounter, 12938 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 2 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3140 SdHoareTripleChecker+Valid, 15743 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:25:18,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3140 Valid, 15743 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1783 Invalid, 13 Unknown, 0 Unchecked, 46.1s Time] [2021-11-21 01:25:19,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15552 states. [2021-11-21 01:25:19,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15552 to 15539. [2021-11-21 01:25:19,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15539 states, 9627 states have (on average 1.3079879505557286) internal successors, (12592), 9786 states have internal predecessors, (12592), 4845 states have call successors, (4845), 1080 states have call predecessors, (4845), 1064 states have return successors, (4966), 4785 states have call predecessors, (4966), 4827 states have call successors, (4966) [2021-11-21 01:25:20,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15539 states to 15539 states and 22403 transitions. [2021-11-21 01:25:20,150 INFO L78 Accepts]: Start accepts. Automaton has 15539 states and 22403 transitions. Word has length 50 [2021-11-21 01:25:20,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:25:20,152 INFO L470 AbstractCegarLoop]: Abstraction has 15539 states and 22403 transitions. [2021-11-21 01:25:20,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-21 01:25:20,153 INFO L276 IsEmpty]: Start isEmpty. Operand 15539 states and 22403 transitions. [2021-11-21 01:25:20,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-21 01:25:20,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:25:20,155 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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] [2021-11-21 01:25:20,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:25:20,156 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:25:20,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:25:20,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1806192198, now seen corresponding path program 1 times [2021-11-21 01:25:20,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:25:20,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065435669] [2021-11-21 01:25:20,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:25:20,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:25:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:25:21,016 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-21 01:25:21,017 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:25:21,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065435669] [2021-11-21 01:25:21,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065435669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:25:21,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:25:21,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:25:21,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905319294] [2021-11-21 01:25:21,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:25:21,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:25:21,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:25:21,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:25:21,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:25:21,019 INFO L87 Difference]: Start difference. First operand 15539 states and 22403 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-21 01:25:24,760 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:26,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:29,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:34,581 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:25:36,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:25:38,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:25:40,874 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:44,901 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:47,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:54,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:25:58,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:01,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:04,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:06,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:08,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:11,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:13,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:14,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:26:14,997 INFO L93 Difference]: Finished difference Result 15552 states and 22412 transitions. [2021-11-21 01:26:14,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:26:14,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 55 [2021-11-21 01:26:14,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:26:15,087 INFO L225 Difference]: With dead ends: 15552 [2021-11-21 01:26:15,087 INFO L226 Difference]: Without dead ends: 15314 [2021-11-21 01:26:15,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:26:15,102 INFO L933 BasicCegarLoop]: 4127 mSDtfsCounter, 3177 mSDsluCounter, 12921 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 2 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3184 SdHoareTripleChecker+Valid, 15737 SdHoareTripleChecker+Invalid, 1774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:26:15,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3184 Valid, 15737 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1758 Invalid, 14 Unknown, 0 Unchecked, 53.4s Time] [2021-11-21 01:26:15,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15314 states. [2021-11-21 01:26:15,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15314 to 15307. [2021-11-21 01:26:15,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15307 states, 9486 states have (on average 1.3085599831330381) internal successors, (12413), 9640 states have internal predecessors, (12413), 4769 states have call successors, (4769), 1064 states have call predecessors, (4769), 1049 states have return successors, (4893), 4712 states have call predecessors, (4893), 4754 states have call successors, (4893) [2021-11-21 01:26:16,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15307 states to 15307 states and 22075 transitions. [2021-11-21 01:26:16,086 INFO L78 Accepts]: Start accepts. Automaton has 15307 states and 22075 transitions. Word has length 55 [2021-11-21 01:26:16,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:26:16,087 INFO L470 AbstractCegarLoop]: Abstraction has 15307 states and 22075 transitions. [2021-11-21 01:26:16,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-21 01:26:16,087 INFO L276 IsEmpty]: Start isEmpty. Operand 15307 states and 22075 transitions. [2021-11-21 01:26:16,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-21 01:26:16,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:26:16,091 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:26:16,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:26:16,091 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:26:16,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:26:16,093 INFO L85 PathProgramCache]: Analyzing trace with hash 254953516, now seen corresponding path program 1 times [2021-11-21 01:26:16,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:26:16,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585270887] [2021-11-21 01:26:16,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:26:16,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:26:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:26:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-21 01:26:17,237 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:26:17,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585270887] [2021-11-21 01:26:17,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585270887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:26:17,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:26:17,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:26:17,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378409596] [2021-11-21 01:26:17,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:26:17,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:26:17,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:26:17,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:26:17,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:26:17,239 INFO L87 Difference]: Start difference. First operand 15307 states and 22075 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:26:20,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:23,466 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:26:24,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:26:26,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:28,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:26:32,773 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:35,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:39,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:43,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:45,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:48,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:50,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:52,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:55,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:55,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:26:55,974 INFO L93 Difference]: Finished difference Result 31461 states and 45509 transitions. [2021-11-21 01:26:55,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:26:55,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 100 [2021-11-21 01:26:55,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:26:56,064 INFO L225 Difference]: With dead ends: 31461 [2021-11-21 01:26:56,064 INFO L226 Difference]: Without dead ends: 16170 [2021-11-21 01:26:56,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:26:56,184 INFO L933 BasicCegarLoop]: 3574 mSDtfsCounter, 133 mSDsluCounter, 3834 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 0 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 6983 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:26:56,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 6983 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 893 Invalid, 11 Unknown, 0 Unchecked, 38.1s Time] [2021-11-21 01:26:56,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16170 states. [2021-11-21 01:26:57,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16170 to 15313. [2021-11-21 01:26:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15313 states, 9492 states have (on average 1.3083649388959124) internal successors, (12419), 9646 states have internal predecessors, (12419), 4769 states have call successors, (4769), 1064 states have call predecessors, (4769), 1049 states have return successors, (4893), 4712 states have call predecessors, (4893), 4754 states have call successors, (4893) [2021-11-21 01:26:57,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15313 states to 15313 states and 22081 transitions. [2021-11-21 01:26:57,210 INFO L78 Accepts]: Start accepts. Automaton has 15313 states and 22081 transitions. Word has length 100 [2021-11-21 01:26:57,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:26:57,213 INFO L470 AbstractCegarLoop]: Abstraction has 15313 states and 22081 transitions. [2021-11-21 01:26:57,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:26:57,213 INFO L276 IsEmpty]: Start isEmpty. Operand 15313 states and 22081 transitions. [2021-11-21 01:26:57,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-21 01:26:57,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:26:57,219 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:26:57,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:26:57,220 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:26:57,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:26:57,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1768409560, now seen corresponding path program 1 times [2021-11-21 01:26:57,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:26:57,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864218918] [2021-11-21 01:26:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:26:57,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:26:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:26:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-21 01:26:58,046 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:26:58,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864218918] [2021-11-21 01:26:58,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864218918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:26:58,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:26:58,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:26:58,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583710488] [2021-11-21 01:26:58,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:26:58,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:26:58,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:26:58,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:26:58,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:26:58,049 INFO L87 Difference]: Start difference. First operand 15313 states and 22081 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-21 01:26:59,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:02,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:04,237 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:07,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:08,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:27:10,298 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:27:12,770 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:27:16,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:18,499 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:23,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:26,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:29,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:31,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:33,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:36,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:38,471 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:39,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:27:39,403 INFO L93 Difference]: Finished difference Result 31464 states and 45506 transitions. [2021-11-21 01:27:39,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:27:39,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2021-11-21 01:27:39,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:27:39,500 INFO L225 Difference]: With dead ends: 31464 [2021-11-21 01:27:39,500 INFO L226 Difference]: Without dead ends: 16167 [2021-11-21 01:27:39,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:27:39,566 INFO L933 BasicCegarLoop]: 3565 mSDtfsCounter, 135 mSDsluCounter, 3829 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 2 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 6970 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:27:39,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 6970 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 888 Invalid, 12 Unknown, 0 Unchecked, 40.6s Time] [2021-11-21 01:27:39,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16167 states. [2021-11-21 01:27:40,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16167 to 15313. [2021-11-21 01:27:40,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15313 states, 9492 states have (on average 1.3083649388959124) internal successors, (12419), 9646 states have internal predecessors, (12419), 4769 states have call successors, (4769), 1064 states have call predecessors, (4769), 1049 states have return successors, (4893), 4712 states have call predecessors, (4893), 4754 states have call successors, (4893) [2021-11-21 01:27:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15313 states to 15313 states and 22081 transitions. [2021-11-21 01:27:40,611 INFO L78 Accepts]: Start accepts. Automaton has 15313 states and 22081 transitions. Word has length 113 [2021-11-21 01:27:40,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:27:40,612 INFO L470 AbstractCegarLoop]: Abstraction has 15313 states and 22081 transitions. [2021-11-21 01:27:40,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-21 01:27:40,612 INFO L276 IsEmpty]: Start isEmpty. Operand 15313 states and 22081 transitions. [2021-11-21 01:27:40,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-21 01:27:40,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:27:40,629 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:27:40,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:27:40,629 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:27:40,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:27:40,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1623385313, now seen corresponding path program 1 times [2021-11-21 01:27:40,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:27:40,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475234147] [2021-11-21 01:27:40,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:27:40,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:27:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:27:41,898 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-21 01:27:41,898 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:27:41,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475234147] [2021-11-21 01:27:41,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475234147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:27:41,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:27:41,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:27:41,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017148682] [2021-11-21 01:27:41,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:27:41,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:27:41,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:27:41,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:27:41,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:27:41,901 INFO L87 Difference]: Start difference. First operand 15313 states and 22081 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-21 01:27:45,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:49,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:55,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:27:57,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:27:58,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:28:03,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:28:05,292 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:28:10,287 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:13,443 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:15,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:17,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:19,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:29,672 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:33,919 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:36,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:39,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:41,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:44,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:46,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:48,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:48,767 INFO L93 Difference]: Finished difference Result 16018 states and 22972 transitions. [2021-11-21 01:28:48,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:28:48,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 115 [2021-11-21 01:28:48,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:48,837 INFO L225 Difference]: With dead ends: 16018 [2021-11-21 01:28:48,838 INFO L226 Difference]: Without dead ends: 16016 [2021-11-21 01:28:48,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:28:48,850 INFO L933 BasicCegarLoop]: 5051 mSDtfsCounter, 3097 mSDsluCounter, 14996 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 2 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3100 SdHoareTripleChecker+Valid, 18397 SdHoareTripleChecker+Invalid, 2290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:48,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3100 Valid, 18397 Invalid, 2290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2273 Invalid, 15 Unknown, 0 Unchecked, 66.3s Time] [2021-11-21 01:28:48,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16016 states. [2021-11-21 01:28:49,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16016 to 15957. [2021-11-21 01:28:49,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15957 states, 9888 states have (on average 1.3063309061488673) internal successors, (12917), 10050 states have internal predecessors, (12917), 4937 states have call successors, (4937), 1142 states have call predecessors, (4937), 1129 states have return successors, (5051), 4874 states have call predecessors, (5051), 4922 states have call successors, (5051) [2021-11-21 01:28:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15957 states to 15957 states and 22905 transitions. [2021-11-21 01:28:49,829 INFO L78 Accepts]: Start accepts. Automaton has 15957 states and 22905 transitions. Word has length 115 [2021-11-21 01:28:49,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:49,830 INFO L470 AbstractCegarLoop]: Abstraction has 15957 states and 22905 transitions. [2021-11-21 01:28:49,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-21 01:28:49,831 INFO L276 IsEmpty]: Start isEmpty. Operand 15957 states and 22905 transitions. [2021-11-21 01:28:49,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 01:28:49,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:49,836 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:49,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:28:49,837 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:28:49,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:49,837 INFO L85 PathProgramCache]: Analyzing trace with hash -275901482, now seen corresponding path program 1 times [2021-11-21 01:28:49,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:49,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356242708] [2021-11-21 01:28:49,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:49,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:51,376 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-21 01:28:51,377 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:51,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356242708] [2021-11-21 01:28:51,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356242708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:51,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:28:51,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:28:51,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994545457] [2021-11-21 01:28:51,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:51,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:28:51,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:51,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:28:51,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:28:51,379 INFO L87 Difference]: Start difference. First operand 15957 states and 22905 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:28:55,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:59,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:01,033 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:29:02,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:29:05,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:29:06,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:29:07,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:29:10,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:29:14,632 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:16,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:19,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:20,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:22,113 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:24,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:26,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:28,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:36,716 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:40,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:43,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:45,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:48,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:50,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:53,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:53,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:53,935 INFO L93 Difference]: Finished difference Result 18209 states and 26125 transitions. [2021-11-21 01:29:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:29:53,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 138 [2021-11-21 01:29:53,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:54,022 INFO L225 Difference]: With dead ends: 18209 [2021-11-21 01:29:54,022 INFO L226 Difference]: Without dead ends: 18207 [2021-11-21 01:29:54,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:29:54,031 INFO L933 BasicCegarLoop]: 3861 mSDtfsCounter, 1774 mSDsluCounter, 12351 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 0 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1777 SdHoareTripleChecker+Valid, 14850 SdHoareTripleChecker+Invalid, 1852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:54,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1777 Valid, 14850 Invalid, 1852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1838 Invalid, 14 Unknown, 0 Unchecked, 61.9s Time] [2021-11-21 01:29:54,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18207 states. [2021-11-21 01:29:54,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18207 to 18193. [2021-11-21 01:29:54,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18193 states, 11301 states have (on average 1.3070524732324573) internal successors, (14771), 11468 states have internal predecessors, (14771), 5603 states have call successors, (5603), 1299 states have call predecessors, (5603), 1286 states have return successors, (5731), 5539 states have call predecessors, (5731), 5588 states have call successors, (5731) [2021-11-21 01:29:55,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18193 states to 18193 states and 26105 transitions. [2021-11-21 01:29:55,028 INFO L78 Accepts]: Start accepts. Automaton has 18193 states and 26105 transitions. Word has length 138 [2021-11-21 01:29:55,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:55,029 INFO L470 AbstractCegarLoop]: Abstraction has 18193 states and 26105 transitions. [2021-11-21 01:29:55,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:29:55,029 INFO L276 IsEmpty]: Start isEmpty. Operand 18193 states and 26105 transitions. [2021-11-21 01:29:55,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-21 01:29:55,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:55,035 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:55,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:29:55,036 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:29:55,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:55,036 INFO L85 PathProgramCache]: Analyzing trace with hash -982285129, now seen corresponding path program 1 times [2021-11-21 01:29:55,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:55,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579346689] [2021-11-21 01:29:55,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:55,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:56,647 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-21 01:29:56,647 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:56,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579346689] [2021-11-21 01:29:56,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579346689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:29:56,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:29:56,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:29:56,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56245810] [2021-11-21 01:29:56,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:29:56,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:29:56,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:56,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:29:56,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:29:56,649 INFO L87 Difference]: Start difference. First operand 18193 states and 26105 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, (26), 3 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 01:30:00,336 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:02,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:06,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:08,484 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:11,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:13,043 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:30:18,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:30:21,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:30:24,278 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:30:26,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:30:28,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:30:33,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:35,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:43,539 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:48,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:50,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:53,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:55,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:58,245 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:00,544 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:02,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:02,492 INFO L93 Difference]: Finished difference Result 19417 states and 27728 transitions. [2021-11-21 01:31:02,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:31:02,493 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, (26), 3 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 148 [2021-11-21 01:31:02,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:02,602 INFO L225 Difference]: With dead ends: 19417 [2021-11-21 01:31:02,602 INFO L226 Difference]: Without dead ends: 19415 [2021-11-21 01:31:02,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:31:02,608 INFO L933 BasicCegarLoop]: 4647 mSDtfsCounter, 3427 mSDsluCounter, 14103 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 3 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3435 SdHoareTripleChecker+Valid, 17308 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:02,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3435 Valid, 17308 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1955 Invalid, 16 Unknown, 0 Unchecked, 65.2s Time] [2021-11-21 01:31:02,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19415 states. [2021-11-21 01:31:03,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19415 to 19354. [2021-11-21 01:31:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19354 states, 12005 states have (on average 1.3045397750937109) internal successors, (15661), 12191 states have internal predecessors, (15661), 5930 states have call successors, (5930), 1433 states have call predecessors, (5930), 1416 states have return successors, (6058), 5855 states have call predecessors, (6058), 5915 states have call successors, (6058) [2021-11-21 01:31:03,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19354 states to 19354 states and 27649 transitions. [2021-11-21 01:31:03,539 INFO L78 Accepts]: Start accepts. Automaton has 19354 states and 27649 transitions. Word has length 148 [2021-11-21 01:31:03,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:03,540 INFO L470 AbstractCegarLoop]: Abstraction has 19354 states and 27649 transitions. [2021-11-21 01:31:03,540 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, (26), 3 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 01:31:03,540 INFO L276 IsEmpty]: Start isEmpty. Operand 19354 states and 27649 transitions. [2021-11-21 01:31:03,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-21 01:31:03,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:03,549 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:03,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:31:03,549 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:31:03,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:03,550 INFO L85 PathProgramCache]: Analyzing trace with hash -4640581, now seen corresponding path program 1 times [2021-11-21 01:31:03,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:03,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664591320] [2021-11-21 01:31:03,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:03,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-21 01:31:04,541 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:04,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664591320] [2021-11-21 01:31:04,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664591320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:04,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:04,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:31:04,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173385820] [2021-11-21 01:31:04,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:04,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:31:04,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:04,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:31:04,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:31:04,544 INFO L87 Difference]: Start difference. First operand 19354 states and 27649 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2021-11-21 01:31:05,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:10,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:13,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:16,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:19,453 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:31:22,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:31:26,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:28,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:37,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:41,120 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:43,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:46,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:48,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:51,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:53,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:54,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:54,655 INFO L93 Difference]: Finished difference Result 38747 states and 55611 transitions. [2021-11-21 01:31:54,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:31:54,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) Word has length 171 [2021-11-21 01:31:54,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:54,726 INFO L225 Difference]: With dead ends: 38747 [2021-11-21 01:31:54,726 INFO L226 Difference]: Without dead ends: 19409 [2021-11-21 01:31:54,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:31:54,903 INFO L933 BasicCegarLoop]: 3407 mSDtfsCounter, 19 mSDsluCounter, 11488 mSDsCounter, 0 mSdLazyCounter, 1731 mSolverCounterSat, 1 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 13604 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1731 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:54,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 13604 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1731 Invalid, 13 Unknown, 0 Unchecked, 49.3s Time] [2021-11-21 01:31:54,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19409 states. [2021-11-21 01:31:55,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19409 to 19374. [2021-11-21 01:31:55,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19374 states, 12020 states have (on average 1.3041597337770383) internal successors, (15676), 12206 states have internal predecessors, (15676), 5930 states have call successors, (5930), 1433 states have call predecessors, (5930), 1421 states have return successors, (6068), 5860 states have call predecessors, (6068), 5915 states have call successors, (6068) [2021-11-21 01:31:55,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19374 states to 19374 states and 27674 transitions. [2021-11-21 01:31:55,746 INFO L78 Accepts]: Start accepts. Automaton has 19374 states and 27674 transitions. Word has length 171 [2021-11-21 01:31:55,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:55,747 INFO L470 AbstractCegarLoop]: Abstraction has 19374 states and 27674 transitions. [2021-11-21 01:31:55,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2021-11-21 01:31:55,748 INFO L276 IsEmpty]: Start isEmpty. Operand 19374 states and 27674 transitions. [2021-11-21 01:31:55,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-21 01:31:55,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:55,759 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:55,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:31:55,760 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:31:55,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:55,760 INFO L85 PathProgramCache]: Analyzing trace with hash 361531692, now seen corresponding path program 1 times [2021-11-21 01:31:55,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:55,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762407089] [2021-11-21 01:31:55,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:55,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:56,731 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-21 01:31:56,732 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:56,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762407089] [2021-11-21 01:31:56,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762407089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:56,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:56,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:31:56,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751778190] [2021-11-21 01:31:56,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:56,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:31:56,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:56,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:31:56,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:31:56,734 INFO L87 Difference]: Start difference. First operand 19374 states and 27674 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24)