./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 34736e16fed7ff8cc88604084fa777d707e75948c95ce657a43a86ad92782d71 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:25:48,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:25:48,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:25:48,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:25:48,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:25:48,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:25:48,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:25:48,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:25:48,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:25:48,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:25:48,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:25:48,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:25:48,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:25:48,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:25:48,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:25:48,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:25:48,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:25:48,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:25:48,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:25:48,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:25:48,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:25:48,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:25:48,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:25:48,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:25:48,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:25:48,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:25:48,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:25:48,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:25:48,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:25:48,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:25:48,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:25:48,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:25:48,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:25:48,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:25:48,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:25:48,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:25:48,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:25:48,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:25:48,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:25:48,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:25:48,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:25:48,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:25:48,380 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:25:48,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:25:48,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:25:48,381 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:25:48,382 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:25:48,382 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:25:48,383 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:25:48,383 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:25:48,383 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:25:48,383 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:25:48,384 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:25:48,384 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:25:48,384 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:25:48,384 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:25:48,385 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:25:48,385 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:25:48,385 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:25:48,386 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:25:48,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:25:48,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:25:48,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:25:48,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:25:48,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:25:48,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:25:48,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:25:48,388 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:25:48,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:25:48,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:25:48,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:25:48,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:25:48,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:25:48,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:25:48,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:25:48,390 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:25:48,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:25:48,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:25:48,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:25:48,391 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:25:48,391 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_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34736e16fed7ff8cc88604084fa777d707e75948c95ce657a43a86ad92782d71 [2021-11-25 20:25:48,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:25:48,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:25:48,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:25:48,693 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:25:48,693 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:25:48,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2021-11-25 20:25:48,769 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/data/1d4e6d79b/9b506c85e61e4b6d9148c116f5054739/FLAG0e9d2833f [2021-11-25 20:25:49,709 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:25:49,710 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2021-11-25 20:25:49,752 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/data/1d4e6d79b/9b506c85e61e4b6d9148c116f5054739/FLAG0e9d2833f [2021-11-25 20:25:50,136 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/data/1d4e6d79b/9b506c85e61e4b6d9148c116f5054739 [2021-11-25 20:25:50,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:25:50,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:25:50,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:25:50,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:25:50,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:25:50,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:25:50" (1/1) ... [2021-11-25 20:25:50,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a3a5690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:25:50, skipping insertion in model container [2021-11-25 20:25:50,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:25:50" (1/1) ... [2021-11-25 20:25:50,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:25:50,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:25:52,660 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_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278128,278141] [2021-11-25 20:25:52,664 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_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278294,278307] [2021-11-25 20:25:52,665 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_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278458,278471] [2021-11-25 20:25:52,665 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_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278623,278636] [2021-11-25 20:25:52,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:25:52,753 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:25:53,194 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_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278128,278141] [2021-11-25 20:25:53,194 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_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278294,278307] [2021-11-25 20:25:53,195 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_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278458,278471] [2021-11-25 20:25:53,195 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_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278623,278636] [2021-11-25 20:25:53,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:25:53,394 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:25:53,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:25:53 WrapperNode [2021-11-25 20:25:53,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:25:53,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:25:53,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:25:53,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:25:53,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:25:53" (1/1) ... [2021-11-25 20:25:53,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:25:53" (1/1) ... [2021-11-25 20:25:53,688 INFO L137 Inliner]: procedures = 340, calls = 1497, calls flagged for inlining = 194, calls inlined = 177, statements flattened = 4027 [2021-11-25 20:25:53,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:25:53,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:25:53,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:25:53,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:25:53,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:25:53" (1/1) ... [2021-11-25 20:25:53,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:25:53" (1/1) ... [2021-11-25 20:25:53,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:25:53" (1/1) ... [2021-11-25 20:25:53,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:25:53" (1/1) ... [2021-11-25 20:25:53,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:25:53" (1/1) ... [2021-11-25 20:25:53,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:25:53" (1/1) ... [2021-11-25 20:25:53,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:25:53" (1/1) ... [2021-11-25 20:25:53,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:25:53,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:25:53,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:25:53,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:25:53,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:25:53" (1/1) ... [2021-11-25 20:25:53,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:25:54,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:25:54,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:25:54,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:25:54,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 20:25:54,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 20:25:54,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:25:54,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:25:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 20:25:54,078 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 20:25:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 20:25:54,078 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 20:25:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2021-11-25 20:25:54,079 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2021-11-25 20:25:54,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:25:54,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:25:54,079 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open_clean [2021-11-25 20:25:54,079 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open_clean [2021-11-25 20:25:54,079 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 20:25:54,080 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 20:25:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure devm_regulator_get [2021-11-25 20:25:54,080 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_regulator_get [2021-11-25 20:25:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_spi_trans [2021-11-25 20:25:54,080 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_spi_trans [2021-11-25 20:25:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2021-11-25 20:25:54,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2021-11-25 20:25:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-25 20:25:54,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-25 20:25:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_read_reg [2021-11-25 20:25:54,082 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_read_reg [2021-11-25 20:25:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:25:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 20:25:54,082 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 20:25:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:25:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 20:25:54,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 20:25:54,083 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_stop [2021-11-25 20:25:54,083 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_stop [2021-11-25 20:25:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_bits [2021-11-25 20:25:54,084 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_bits [2021-11-25 20:25:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 20:25:54,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 20:25:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 20:25:54,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 20:25:54,085 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx_ni [2021-11-25 20:25:54,085 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx_ni [2021-11-25 20:25:54,085 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2021-11-25 20:25:54,086 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2021-11-25 20:25:54,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:25:54,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:25:54,088 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2021-11-25 20:25:54,088 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2021-11-25 20:25:54,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-25 20:25:54,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-25 20:25:54,089 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 20:25:54,089 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 20:25:54,089 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 20:25:54,089 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 20:25:54,089 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2021-11-25 20:25:54,089 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2021-11-25 20:25:54,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 20:25:54,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 20:25:54,090 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 20:25:54,090 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 20:25:54,090 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2021-11-25 20:25:54,090 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2021-11-25 20:25:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure clk_disable_unprepare [2021-11-25 20:25:54,091 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_disable_unprepare [2021-11-25 20:25:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 20:25:54,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 20:25:54,092 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-25 20:25:54,092 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-25 20:25:54,092 INFO L130 BoogieDeclarations]: Found specification of procedure clk_unprepare [2021-11-25 20:25:54,093 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_unprepare [2021-11-25 20:25:54,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 20:25:54,093 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_set_normal_mode [2021-11-25 20:25:54,093 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_set_normal_mode [2021-11-25 20:25:54,093 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 20:25:54,093 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 20:25:54,094 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_remove [2021-11-25 20:25:54,094 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_remove [2021-11-25 20:25:54,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:25:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 20:25:54,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 20:25:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_error_skb [2021-11-25 20:25:54,095 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_error_skb [2021-11-25 20:25:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_sleep [2021-11-25 20:25:54,096 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_sleep [2021-11-25 20:25:54,096 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-25 20:25:54,096 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-25 20:25:54,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:25:54,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 20:25:54,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 20:25:54,098 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_clean [2021-11-25 20:25:54,098 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_clean [2021-11-25 20:25:54,098 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2021-11-25 20:25:54,098 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2021-11-25 20:25:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 20:25:54,099 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 20:25:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 20:25:54,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 20:25:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_power_enable [2021-11-25 20:25:54,099 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_power_enable [2021-11-25 20:25:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 20:25:54,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 20:25:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_suspend [2021-11-25 20:25:54,100 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_suspend [2021-11-25 20:25:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:25:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mcp_lock_of_mcp251x_priv [2021-11-25 20:25:54,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mcp_lock_of_mcp251x_priv [2021-11-25 20:25:54,104 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open [2021-11-25 20:25:54,106 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open [2021-11-25 20:25:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_probe [2021-11-25 20:25:54,106 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_probe [2021-11-25 20:25:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mcp_lock_of_mcp251x_priv [2021-11-25 20:25:54,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mcp_lock_of_mcp251x_priv [2021-11-25 20:25:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:25:54,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:25:54,108 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_resume [2021-11-25 20:25:54,115 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_resume [2021-11-25 20:25:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:25:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 20:25:54,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 20:25:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 20:25:54,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 20:25:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-25 20:25:54,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-25 20:25:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-25 20:25:54,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-25 20:25:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_reset [2021-11-25 20:25:54,117 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_reset [2021-11-25 20:25:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:25:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 20:25:54,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 20:25:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 20:25:54,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 20:25:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:25:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2021-11-25 20:25:54,118 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2021-11-25 20:25:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:25:54,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:25:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:25:54,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:25:54,119 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2021-11-25 20:25:54,119 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2021-11-25 20:25:54,119 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-25 20:25:54,119 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-25 20:25:54,119 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_setup [2021-11-25 20:25:54,119 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_setup [2021-11-25 20:25:54,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 20:25:54,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 20:25:54,120 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2021-11-25 20:25:54,120 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2021-11-25 20:25:54,120 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 20:25:54,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 20:25:54,120 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 20:25:54,120 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 20:25:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_rx [2021-11-25 20:25:54,121 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_rx [2021-11-25 20:25:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_is_2510 [2021-11-25 20:25:54,121 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_is_2510 [2021-11-25 20:25:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:25:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2021-11-25 20:25:54,121 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2021-11-25 20:25:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_reg [2021-11-25 20:25:54,122 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_reg [2021-11-25 20:25:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-25 20:25:54,122 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-25 20:25:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 20:25:54,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 20:25:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:25:54,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:25:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 20:25:54,123 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 20:25:54,870 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:25:54,877 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:25:55,379 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:26:41,937 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 20:26:43,264 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:26:45,101 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:26:45,101 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 20:26:45,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:26:45 BoogieIcfgContainer [2021-11-25 20:26:45,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:26:45,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:26:45,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:26:45,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:26:45,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:25:50" (1/3) ... [2021-11-25 20:26:45,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d14d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:26:45, skipping insertion in model container [2021-11-25 20:26:45,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:25:53" (2/3) ... [2021-11-25 20:26:45,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d14d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:26:45, skipping insertion in model container [2021-11-25 20:26:45,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:26:45" (3/3) ... [2021-11-25 20:26:45,119 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2021-11-25 20:26:45,131 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:26:45,132 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 20:26:45,211 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:26:45,226 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 [2021-11-25 20:26:45,227 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 20:26:45,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 1104 states, 666 states have (on average 1.3273273273273274) internal successors, (884), 689 states have internal predecessors, (884), 359 states have call successors, (359), 77 states have call predecessors, (359), 76 states have return successors, (350), 344 states have call predecessors, (350), 350 states have call successors, (350) [2021-11-25 20:26:45,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 20:26:45,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:45,329 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:45,332 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:26:45,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:45,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1836371569, now seen corresponding path program 1 times [2021-11-25 20:26:45,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:45,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792151504] [2021-11-25 20:26:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:45,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-11-25 20:26:46,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:46,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792151504] [2021-11-25 20:26:46,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792151504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:46,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:26:46,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:26:46,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323897378] [2021-11-25 20:26:46,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:46,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:46,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:46,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:46,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:26:46,752 INFO L87 Difference]: Start difference. First operand has 1104 states, 666 states have (on average 1.3273273273273274) internal successors, (884), 689 states have internal predecessors, (884), 359 states have call successors, (359), 77 states have call predecessors, (359), 76 states have return successors, (350), 344 states have call predecessors, (350), 350 states have call successors, (350) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-25 20:26:48,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:52,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:52,194 INFO L93 Difference]: Finished difference Result 3134 states and 4649 transitions. [2021-11-25 20:26:52,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:52,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 131 [2021-11-25 20:26:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:52,249 INFO L225 Difference]: With dead ends: 3134 [2021-11-25 20:26:52,250 INFO L226 Difference]: Without dead ends: 2035 [2021-11-25 20:26:52,265 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 [2021-11-25 20:26:52,269 INFO L933 BasicCegarLoop]: 1675 mSDtfsCounter, 1437 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:52,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1437 Valid, 2991 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 489 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-25 20:26:52,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2021-11-25 20:26:52,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2016. [2021-11-25 20:26:52,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1227 states have (on average 1.321923390383048) internal successors, (1622), 1272 states have internal predecessors, (1622), 641 states have call successors, (641), 149 states have call predecessors, (641), 145 states have return successors, (679), 617 states have call predecessors, (679), 637 states have call successors, (679) [2021-11-25 20:26:52,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2942 transitions. [2021-11-25 20:26:52,565 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2942 transitions. Word has length 131 [2021-11-25 20:26:52,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:52,566 INFO L470 AbstractCegarLoop]: Abstraction has 2016 states and 2942 transitions. [2021-11-25 20:26:52,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-25 20:26:52,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2942 transitions. [2021-11-25 20:26:52,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-25 20:26:52,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:52,584 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:52,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:26:52,585 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:26:52,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:52,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1104741546, now seen corresponding path program 1 times [2021-11-25 20:26:52,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:52,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008667002] [2021-11-25 20:26:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:52,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2021-11-25 20:26:53,215 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:53,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008667002] [2021-11-25 20:26:53,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008667002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:53,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:26:53,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:26:53,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088566380] [2021-11-25 20:26:53,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:53,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:53,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:53,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:53,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:26:53,219 INFO L87 Difference]: Start difference. First operand 2016 states and 2942 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-25 20:26:55,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:26:58,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:58,931 INFO L93 Difference]: Finished difference Result 5915 states and 8631 transitions. [2021-11-25 20:26:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:26:58,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2021-11-25 20:26:58,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:58,977 INFO L225 Difference]: With dead ends: 5915 [2021-11-25 20:26:58,978 INFO L226 Difference]: Without dead ends: 3922 [2021-11-25 20:26:58,994 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 [2021-11-25 20:26:58,995 INFO L933 BasicCegarLoop]: 1632 mSDtfsCounter, 1464 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:58,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 2911 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 508 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-25 20:26:59,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2021-11-25 20:26:59,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3918. [2021-11-25 20:26:59,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3918 states, 2402 states have (on average 1.3201498751040799) internal successors, (3171), 2484 states have internal predecessors, (3171), 1226 states have call successors, (1226), 294 states have call predecessors, (1226), 287 states have return successors, (1306), 1185 states have call predecessors, (1306), 1222 states have call successors, (1306) [2021-11-25 20:26:59,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3918 states to 3918 states and 5703 transitions. [2021-11-25 20:26:59,285 INFO L78 Accepts]: Start accepts. Automaton has 3918 states and 5703 transitions. Word has length 135 [2021-11-25 20:26:59,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:59,286 INFO L470 AbstractCegarLoop]: Abstraction has 3918 states and 5703 transitions. [2021-11-25 20:26:59,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-25 20:26:59,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3918 states and 5703 transitions. [2021-11-25 20:26:59,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 20:26:59,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:59,291 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:59,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:26:59,291 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:26:59,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:59,292 INFO L85 PathProgramCache]: Analyzing trace with hash -532134367, now seen corresponding path program 1 times [2021-11-25 20:26:59,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:59,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689756014] [2021-11-25 20:26:59,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:59,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:59,912 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-11-25 20:26:59,912 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:59,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689756014] [2021-11-25 20:26:59,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689756014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:26:59,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:26:59,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:26:59,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791782082] [2021-11-25 20:26:59,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:26:59,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:26:59,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:59,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:26:59,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:26:59,915 INFO L87 Difference]: Start difference. First operand 3918 states and 5703 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-25 20:27:01,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:06,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:27:06,476 INFO L93 Difference]: Finished difference Result 11272 states and 16329 transitions. [2021-11-25 20:27:06,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:27:06,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2021-11-25 20:27:06,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:27:06,559 INFO L225 Difference]: With dead ends: 11272 [2021-11-25 20:27:06,559 INFO L226 Difference]: Without dead ends: 7377 [2021-11-25 20:27:06,592 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 [2021-11-25 20:27:06,597 INFO L933 BasicCegarLoop]: 1734 mSDtfsCounter, 1324 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:27:06,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1324 Valid, 2997 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 590 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2021-11-25 20:27:06,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7377 states. [2021-11-25 20:27:07,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7377 to 7352. [2021-11-25 20:27:07,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 4474 states have (on average 1.2988377291014752) internal successors, (5811), 4644 states have internal predecessors, (5811), 2306 states have call successors, (2306), 582 states have call predecessors, (2306), 569 states have return successors, (2406), 2217 states have call predecessors, (2406), 2302 states have call successors, (2406) [2021-11-25 20:27:07,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 10523 transitions. [2021-11-25 20:27:07,135 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 10523 transitions. Word has length 133 [2021-11-25 20:27:07,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:27:07,137 INFO L470 AbstractCegarLoop]: Abstraction has 7352 states and 10523 transitions. [2021-11-25 20:27:07,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-25 20:27:07,137 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 10523 transitions. [2021-11-25 20:27:07,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-25 20:27:07,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:27:07,142 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:27:07,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:27:07,142 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:27:07,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:27:07,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1949411335, now seen corresponding path program 1 times [2021-11-25 20:27:07,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:27:07,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743243275] [2021-11-25 20:27:07,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:07,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:27:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:27:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-11-25 20:27:07,763 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:27:07,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743243275] [2021-11-25 20:27:07,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743243275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:27:07,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:27:07,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:27:07,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531285986] [2021-11-25 20:27:07,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:27:07,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:27:07,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:27:07,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:27:07,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:27:07,767 INFO L87 Difference]: Start difference. First operand 7352 states and 10523 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-25 20:27:09,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:13,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:27:13,661 INFO L93 Difference]: Finished difference Result 17756 states and 25319 transitions. [2021-11-25 20:27:13,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:27:13,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2021-11-25 20:27:13,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:27:13,775 INFO L225 Difference]: With dead ends: 17756 [2021-11-25 20:27:13,775 INFO L226 Difference]: Without dead ends: 10427 [2021-11-25 20:27:13,831 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 [2021-11-25 20:27:13,834 INFO L933 BasicCegarLoop]: 1634 mSDtfsCounter, 1418 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:27:13,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1418 Valid, 2924 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 520 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-25 20:27:13,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10427 states. [2021-11-25 20:27:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10427 to 10402. [2021-11-25 20:27:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10402 states, 6318 states have (on average 1.2841088952200064) internal successors, (8113), 6566 states have internal predecessors, (8113), 3234 states have call successors, (3234), 866 states have call predecessors, (3234), 847 states have return successors, (3378), 3091 states have call predecessors, (3378), 3230 states have call successors, (3378) [2021-11-25 20:27:14,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10402 states to 10402 states and 14725 transitions. [2021-11-25 20:27:14,763 INFO L78 Accepts]: Start accepts. Automaton has 10402 states and 14725 transitions. Word has length 134 [2021-11-25 20:27:14,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:27:14,765 INFO L470 AbstractCegarLoop]: Abstraction has 10402 states and 14725 transitions. [2021-11-25 20:27:14,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-25 20:27:14,767 INFO L276 IsEmpty]: Start isEmpty. Operand 10402 states and 14725 transitions. [2021-11-25 20:27:14,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-25 20:27:14,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:27:14,771 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:27:14,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:27:14,772 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:27:14,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:27:14,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1156232625, now seen corresponding path program 1 times [2021-11-25 20:27:14,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:27:14,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468309226] [2021-11-25 20:27:14,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:14,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:27:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:27:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-11-25 20:27:15,528 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:27:15,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468309226] [2021-11-25 20:27:15,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468309226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:27:15,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:27:15,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:27:15,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828725590] [2021-11-25 20:27:15,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:27:15,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:27:15,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:27:15,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:27:15,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:27:15,531 INFO L87 Difference]: Start difference. First operand 10402 states and 14725 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 20:27:17,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:27:31,101 INFO L93 Difference]: Finished difference Result 41025 states and 58566 transitions. [2021-11-25 20:27:31,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:27:31,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2021-11-25 20:27:31,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:27:31,346 INFO L225 Difference]: With dead ends: 41025 [2021-11-25 20:27:31,346 INFO L226 Difference]: Without dead ends: 30646 [2021-11-25 20:27:31,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:27:31,429 INFO L933 BasicCegarLoop]: 2020 mSDtfsCounter, 5906 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 2103 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6002 SdHoareTripleChecker+Valid, 4493 SdHoareTripleChecker+Invalid, 4043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2103 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:27:31,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6002 Valid, 4493 Invalid, 4043 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2103 Valid, 1939 Invalid, 1 Unknown, 0 Unchecked, 14.3s Time] [2021-11-25 20:27:31,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30646 states. [2021-11-25 20:27:33,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30646 to 30274. [2021-11-25 20:27:33,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30274 states, 18354 states have (on average 1.2828266317968835) internal successors, (23545), 19166 states have internal predecessors, (23545), 9426 states have call successors, (9426), 2570 states have call predecessors, (9426), 2491 states have return successors, (10386), 8903 states have call predecessors, (10386), 9422 states have call successors, (10386) [2021-11-25 20:27:33,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30274 states to 30274 states and 43357 transitions. [2021-11-25 20:27:33,321 INFO L78 Accepts]: Start accepts. Automaton has 30274 states and 43357 transitions. Word has length 140 [2021-11-25 20:27:33,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:27:33,322 INFO L470 AbstractCegarLoop]: Abstraction has 30274 states and 43357 transitions. [2021-11-25 20:27:33,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 20:27:33,322 INFO L276 IsEmpty]: Start isEmpty. Operand 30274 states and 43357 transitions. [2021-11-25 20:27:33,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-25 20:27:33,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:27:33,328 INFO L514 BasicCegarLoop]: trace histogram [13, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:27:33,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:27:33,329 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:27:33,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:27:33,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1329762001, now seen corresponding path program 1 times [2021-11-25 20:27:33,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:27:33,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569880763] [2021-11-25 20:27:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:33,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:27:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:27:34,192 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2021-11-25 20:27:34,192 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:27:34,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569880763] [2021-11-25 20:27:34,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569880763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:27:34,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:27:34,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:27:34,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420328112] [2021-11-25 20:27:34,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:27:34,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:27:34,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:27:34,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:27:34,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:27:34,195 INFO L87 Difference]: Start difference. First operand 30274 states and 43357 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 20:27:36,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:27:40,554 INFO L93 Difference]: Finished difference Result 72990 states and 104276 transitions. [2021-11-25 20:27:40,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:27:40,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 153 [2021-11-25 20:27:40,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:27:40,787 INFO L225 Difference]: With dead ends: 72990 [2021-11-25 20:27:40,788 INFO L226 Difference]: Without dead ends: 42739 [2021-11-25 20:27:40,893 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 [2021-11-25 20:27:40,895 INFO L933 BasicCegarLoop]: 1792 mSDtfsCounter, 1433 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:27:40,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1433 Valid, 3083 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 580 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-11-25 20:27:40,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42739 states. [2021-11-25 20:27:43,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42739 to 42674. [2021-11-25 20:27:43,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42674 states, 25978 states have (on average 1.277850488875202) internal successors, (33196), 27195 states have internal predecessors, (33196), 13104 states have call successors, (13104), 3693 states have call predecessors, (13104), 3589 states have return successors, (14288), 12326 states have call predecessors, (14288), 13100 states have call successors, (14288) [2021-11-25 20:27:43,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42674 states to 42674 states and 60588 transitions. [2021-11-25 20:27:43,401 INFO L78 Accepts]: Start accepts. Automaton has 42674 states and 60588 transitions. Word has length 153 [2021-11-25 20:27:43,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:27:43,402 INFO L470 AbstractCegarLoop]: Abstraction has 42674 states and 60588 transitions. [2021-11-25 20:27:43,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 20:27:43,402 INFO L276 IsEmpty]: Start isEmpty. Operand 42674 states and 60588 transitions. [2021-11-25 20:27:43,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-25 20:27:43,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:27:43,407 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:27:43,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:27:43,407 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:27:43,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:27:43,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1547051652, now seen corresponding path program 1 times [2021-11-25 20:27:43,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:27:43,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044072017] [2021-11-25 20:27:43,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:43,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:27:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:27:44,115 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2021-11-25 20:27:44,115 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:27:44,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044072017] [2021-11-25 20:27:44,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044072017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:27:44,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:27:44,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:27:44,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75323068] [2021-11-25 20:27:44,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:27:44,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:27:44,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:27:44,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:27:44,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:27:44,118 INFO L87 Difference]: Start difference. First operand 42674 states and 60588 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:27:46,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:27:51,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:27:51,180 INFO L93 Difference]: Finished difference Result 42680 states and 60593 transitions. [2021-11-25 20:27:51,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:27:51,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 178 [2021-11-25 20:27:51,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:27:51,430 INFO L225 Difference]: With dead ends: 42680 [2021-11-25 20:27:51,431 INFO L226 Difference]: Without dead ends: 42678 [2021-11-25 20:27:51,450 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 [2021-11-25 20:27:51,451 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 1513 mSDsluCounter, 3105 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 3934 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:27:51,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 3934 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 737 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-25 20:27:51,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42678 states. [2021-11-25 20:27:53,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42678 to 42678. [2021-11-25 20:27:53,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42678 states, 25981 states have (on average 1.277818405758054) internal successors, (33199), 27198 states have internal predecessors, (33199), 13104 states have call successors, (13104), 3694 states have call predecessors, (13104), 3590 states have return successors, (14288), 12326 states have call predecessors, (14288), 13100 states have call successors, (14288) [2021-11-25 20:27:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42678 states to 42678 states and 60591 transitions. [2021-11-25 20:27:54,246 INFO L78 Accepts]: Start accepts. Automaton has 42678 states and 60591 transitions. Word has length 178 [2021-11-25 20:27:54,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:27:54,262 INFO L470 AbstractCegarLoop]: Abstraction has 42678 states and 60591 transitions. [2021-11-25 20:27:54,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:27:54,263 INFO L276 IsEmpty]: Start isEmpty. Operand 42678 states and 60591 transitions. [2021-11-25 20:27:54,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-25 20:27:54,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:27:54,268 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:27:54,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:27:54,269 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:27:54,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:27:54,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1060984614, now seen corresponding path program 1 times [2021-11-25 20:27:54,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:27:54,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991203827] [2021-11-25 20:27:54,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:54,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:27:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:27:54,961 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-11-25 20:27:54,961 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:27:54,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991203827] [2021-11-25 20:27:54,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991203827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:27:54,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:27:54,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:27:54,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380952149] [2021-11-25 20:27:54,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:27:54,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:27:54,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:27:54,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:27:54,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:27:54,965 INFO L87 Difference]: Start difference. First operand 42678 states and 60591 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 20:27:57,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:01,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:01,414 INFO L93 Difference]: Finished difference Result 42684 states and 60596 transitions. [2021-11-25 20:28:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:28:01,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 182 [2021-11-25 20:28:01,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:01,666 INFO L225 Difference]: With dead ends: 42684 [2021-11-25 20:28:01,666 INFO L226 Difference]: Without dead ends: 42682 [2021-11-25 20:28:01,687 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 [2021-11-25 20:28:01,688 INFO L933 BasicCegarLoop]: 1316 mSDtfsCounter, 1509 mSDsluCounter, 3105 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 3937 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:01,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 3937 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 737 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-25 20:28:01,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42682 states. [2021-11-25 20:28:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42682 to 42682. [2021-11-25 20:28:03,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42682 states, 25984 states have (on average 1.2777863300492611) internal successors, (33202), 27201 states have internal predecessors, (33202), 13104 states have call successors, (13104), 3695 states have call predecessors, (13104), 3591 states have return successors, (14288), 12326 states have call predecessors, (14288), 13100 states have call successors, (14288) [2021-11-25 20:28:03,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42682 states to 42682 states and 60594 transitions. [2021-11-25 20:28:03,696 INFO L78 Accepts]: Start accepts. Automaton has 42682 states and 60594 transitions. Word has length 182 [2021-11-25 20:28:03,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:03,696 INFO L470 AbstractCegarLoop]: Abstraction has 42682 states and 60594 transitions. [2021-11-25 20:28:03,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 20:28:03,697 INFO L276 IsEmpty]: Start isEmpty. Operand 42682 states and 60594 transitions. [2021-11-25 20:28:03,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-25 20:28:03,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:03,704 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:28:03,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:28:03,704 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:28:03,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:03,705 INFO L85 PathProgramCache]: Analyzing trace with hash -417827268, now seen corresponding path program 1 times [2021-11-25 20:28:03,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:03,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093088317] [2021-11-25 20:28:03,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:03,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2021-11-25 20:28:04,377 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:04,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093088317] [2021-11-25 20:28:04,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093088317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:28:04,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:28:04,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:28:04,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913461878] [2021-11-25 20:28:04,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:04,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:28:04,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:04,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:28:04,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:28:04,380 INFO L87 Difference]: Start difference. First operand 42682 states and 60594 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 20:28:06,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:12,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:12,382 INFO L93 Difference]: Finished difference Result 47743 states and 66114 transitions. [2021-11-25 20:28:12,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:28:12,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 188 [2021-11-25 20:28:12,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:12,573 INFO L225 Difference]: With dead ends: 47743 [2021-11-25 20:28:12,573 INFO L226 Difference]: Without dead ends: 47739 [2021-11-25 20:28:12,598 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 [2021-11-25 20:28:12,599 INFO L933 BasicCegarLoop]: 1373 mSDtfsCounter, 1104 mSDsluCounter, 3759 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 4570 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:12,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 4570 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 826 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-11-25 20:28:12,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47739 states. [2021-11-25 20:28:14,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47739 to 47739. [2021-11-25 20:28:14,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47739 states, 28676 states have (on average 1.2646115218301017) internal successors, (36264), 29938 states have internal predecessors, (36264), 14331 states have call successors, (14331), 4855 states have call predecessors, (14331), 4729 states have return successors, (15515), 13532 states have call predecessors, (15515), 14327 states have call successors, (15515) [2021-11-25 20:28:14,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47739 states to 47739 states and 66110 transitions. [2021-11-25 20:28:14,895 INFO L78 Accepts]: Start accepts. Automaton has 47739 states and 66110 transitions. Word has length 188 [2021-11-25 20:28:14,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:14,896 INFO L470 AbstractCegarLoop]: Abstraction has 47739 states and 66110 transitions. [2021-11-25 20:28:14,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 20:28:14,896 INFO L276 IsEmpty]: Start isEmpty. Operand 47739 states and 66110 transitions. [2021-11-25 20:28:14,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-25 20:28:14,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:14,923 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:28:14,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:28:14,924 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:28:14,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:14,924 INFO L85 PathProgramCache]: Analyzing trace with hash 435233340, now seen corresponding path program 1 times [2021-11-25 20:28:14,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:14,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568608152] [2021-11-25 20:28:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:14,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2021-11-25 20:28:15,585 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:15,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568608152] [2021-11-25 20:28:15,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568608152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:28:15,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:28:15,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:28:15,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609531198] [2021-11-25 20:28:15,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:15,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:28:15,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:15,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:28:15,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:28:15,587 INFO L87 Difference]: Start difference. First operand 47739 states and 66110 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 20:28:17,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:22,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:22,487 INFO L93 Difference]: Finished difference Result 47739 states and 66110 transitions. [2021-11-25 20:28:22,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:28:22,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 194 [2021-11-25 20:28:22,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:22,656 INFO L225 Difference]: With dead ends: 47739 [2021-11-25 20:28:22,656 INFO L226 Difference]: Without dead ends: 47284 [2021-11-25 20:28:22,679 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 [2021-11-25 20:28:22,680 INFO L933 BasicCegarLoop]: 1314 mSDtfsCounter, 1504 mSDsluCounter, 3104 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 3934 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:22,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1504 Valid, 3934 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 732 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-25 20:28:22,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47284 states. [2021-11-25 20:28:25,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47284 to 47284. [2021-11-25 20:28:25,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47284 states, 28568 states have (on average 1.2605712685522263) internal successors, (36012), 29686 states have internal predecessors, (36012), 14036 states have call successors, (14036), 4802 states have call predecessors, (14036), 4678 states have return successors, (15224), 13382 states have call predecessors, (15224), 14036 states have call successors, (15224) [2021-11-25 20:28:25,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47284 states to 47284 states and 65272 transitions. [2021-11-25 20:28:25,286 INFO L78 Accepts]: Start accepts. Automaton has 47284 states and 65272 transitions. Word has length 194 [2021-11-25 20:28:25,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:25,287 INFO L470 AbstractCegarLoop]: Abstraction has 47284 states and 65272 transitions. [2021-11-25 20:28:25,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 20:28:25,288 INFO L276 IsEmpty]: Start isEmpty. Operand 47284 states and 65272 transitions. [2021-11-25 20:28:25,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-25 20:28:25,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:25,294 INFO L514 BasicCegarLoop]: trace histogram [16, 11, 11, 11, 11, 11, 11, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:28:25,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:28:25,295 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:28:25,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:25,295 INFO L85 PathProgramCache]: Analyzing trace with hash 383210522, now seen corresponding path program 1 times [2021-11-25 20:28:25,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:25,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212817972] [2021-11-25 20:28:25,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:25,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:25,783 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2021-11-25 20:28:25,783 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:25,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212817972] [2021-11-25 20:28:25,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212817972] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:28:25,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714671303] [2021-11-25 20:28:25,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:25,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:28:25,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:28:25,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:28:25,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:28:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:27,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 3468 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:28:27,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:28:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2021-11-25 20:28:28,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:28:28,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714671303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:28:28,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:28:28,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 20:28:28,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559345237] [2021-11-25 20:28:28,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:28,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:28:28,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:28,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:28:28,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:28:28,481 INFO L87 Difference]: Start difference. First operand 47284 states and 65272 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 20:28:30,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:36,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:36,125 INFO L93 Difference]: Finished difference Result 112036 states and 155100 transitions. [2021-11-25 20:28:36,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:28:36,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 195 [2021-11-25 20:28:36,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:36,410 INFO L225 Difference]: With dead ends: 112036 [2021-11-25 20:28:36,411 INFO L226 Difference]: Without dead ends: 67947 [2021-11-25 20:28:36,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:28:36,531 INFO L933 BasicCegarLoop]: 1833 mSDtfsCounter, 1407 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:36,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1407 Valid, 3081 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 552 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-11-25 20:28:36,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67947 states. [2021-11-25 20:28:39,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67947 to 67895. [2021-11-25 20:28:39,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67895 states, 41065 states have (on average 1.2616339948861561) internal successors, (51809), 42686 states have internal predecessors, (51809), 20080 states have call successors, (20080), 6926 states have call predecessors, (20080), 6748 states have return successors, (21826), 19113 states have call predecessors, (21826), 20080 states have call successors, (21826) [2021-11-25 20:28:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67895 states to 67895 states and 93715 transitions. [2021-11-25 20:28:40,337 INFO L78 Accepts]: Start accepts. Automaton has 67895 states and 93715 transitions. Word has length 195 [2021-11-25 20:28:40,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:40,337 INFO L470 AbstractCegarLoop]: Abstraction has 67895 states and 93715 transitions. [2021-11-25 20:28:40,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 20:28:40,338 INFO L276 IsEmpty]: Start isEmpty. Operand 67895 states and 93715 transitions. [2021-11-25 20:28:40,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-25 20:28:40,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:40,347 INFO L514 BasicCegarLoop]: trace histogram [17, 11, 11, 11, 11, 11, 11, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:28:40,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 20:28:40,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edbf9940-7eee-4d01-bb6a-79b6492d3f6c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-25 20:28:40,560 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:28:40,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:40,561 INFO L85 PathProgramCache]: Analyzing trace with hash 501771179, now seen corresponding path program 1 times [2021-11-25 20:28:40,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:40,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134937997] [2021-11-25 20:28:40,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:40,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2021-11-25 20:28:41,060 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:41,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134937997] [2021-11-25 20:28:41,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134937997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:28:41,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:28:41,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:28:41,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881747824] [2021-11-25 20:28:41,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:28:41,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:28:41,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:41,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:28:41,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:28:41,063 INFO L87 Difference]: Start difference. First operand 67895 states and 93715 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 20:28:43,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:28:50,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:50,817 INFO L93 Difference]: Finished difference Result 162927 states and 225351 transitions. [2021-11-25 20:28:50,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:28:50,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 213 [2021-11-25 20:28:50,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:51,327 INFO L225 Difference]: With dead ends: 162927 [2021-11-25 20:28:51,327 INFO L226 Difference]: Without dead ends: 98227 [2021-11-25 20:28:51,547 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 [2021-11-25 20:28:51,548 INFO L933 BasicCegarLoop]: 2462 mSDtfsCounter, 1400 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 3721 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:51,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1400 Valid, 3721 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 739 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-11-25 20:28:51,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98227 states.