./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-wireless-prism54-prism54.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec208d4-1a60-4717-8ae4-d41f86cf8617/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec208d4-1a60-4717-8ae4-d41f86cf8617/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec208d4-1a60-4717-8ae4-d41f86cf8617/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec208d4-1a60-4717-8ae4-d41f86cf8617/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec208d4-1a60-4717-8ae4-d41f86cf8617/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec208d4-1a60-4717-8ae4-d41f86cf8617/bin/utaipan-6cKwYrpEi9 --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 2bf48d35d7133b2e8327bc0634357c212875c286543fcf18078150bbf7eff020 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:57:10,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:57:10,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:57:10,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:57:10,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:57:10,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:57:10,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:57:10,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:57:10,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:57:10,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:57:10,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:57:10,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:57:10,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:57:10,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:57:10,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:57:10,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:57:10,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:57:10,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:57:10,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:57:10,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:57:10,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:57:10,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:57:10,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:57:10,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:57:10,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:57:10,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:57:10,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:57:10,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:57:10,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:57:10,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:57:10,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:57:10,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:57:10,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:57:10,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:57:10,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:57:10,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:57:10,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:57:10,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:57:10,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:57:10,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:57:10,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:57:10,385 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec208d4-1a60-4717-8ae4-d41f86cf8617/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 20:57:10,411 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:57:10,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:57:10,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:57:10,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:57:10,413 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:57:10,413 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:57:10,414 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:57:10,414 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:57:10,414 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:57:10,415 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:57:10,415 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:57:10,415 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:57:10,415 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:57:10,416 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:57:10,416 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:57:10,416 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:57:10,417 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:57:10,417 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:57:10,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:57:10,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:57:10,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:57:10,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:57:10,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:57:10,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:57:10,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:57:10,420 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:57:10,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:57:10,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:57:10,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:57:10,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:57:10,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:57:10,421 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:57:10,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:57:10,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:57:10,422 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:57:10,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:57:10,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:57:10,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:57:10,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_bec208d4-1a60-4717-8ae4-d41f86cf8617/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec208d4-1a60-4717-8ae4-d41f86cf8617/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf48d35d7133b2e8327bc0634357c212875c286543fcf18078150bbf7eff020 [2022-11-20 20:57:10,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:57:10,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:57:10,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:57:10,838 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:57:10,839 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:57:10,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec208d4-1a60-4717-8ae4-d41f86cf8617/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i [2022-11-20 20:57:14,292 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:57:15,217 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:57:15,218 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec208d4-1a60-4717-8ae4-d41f86cf8617/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i [2022-11-20 20:57:15,293 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec208d4-1a60-4717-8ae4-d41f86cf8617/bin/utaipan-6cKwYrpEi9/data/c4e94bed1/f8bdbbe79f0d4122bcc61b9f7432ecb4/FLAGcbf33e1ee [2022-11-20 20:57:15,315 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec208d4-1a60-4717-8ae4-d41f86cf8617/bin/utaipan-6cKwYrpEi9/data/c4e94bed1/f8bdbbe79f0d4122bcc61b9f7432ecb4 [2022-11-20 20:57:15,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:57:15,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:57:15,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:57:15,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:57:15,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:57:15,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:57:15" (1/1) ... [2022-11-20 20:57:15,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33836f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:15, skipping insertion in model container [2022-11-20 20:57:15,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:57:15" (1/1) ... [2022-11-20 20:57:15,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:57:15,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:57:20,944 WARN L237 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_bec208d4-1a60-4717-8ae4-d41f86cf8617/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[469707,469720] [2022-11-20 20:57:20,949 WARN L237 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_bec208d4-1a60-4717-8ae4-d41f86cf8617/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[469873,469886] [2022-11-20 20:57:20,950 WARN L237 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_bec208d4-1a60-4717-8ae4-d41f86cf8617/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[470037,470050] [2022-11-20 20:57:20,951 WARN L237 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_bec208d4-1a60-4717-8ae4-d41f86cf8617/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[470202,470215] [2022-11-20 20:57:20,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:57:21,159 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:57:21,910 WARN L237 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_bec208d4-1a60-4717-8ae4-d41f86cf8617/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[469707,469720] [2022-11-20 20:57:21,911 WARN L237 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_bec208d4-1a60-4717-8ae4-d41f86cf8617/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[469873,469886] [2022-11-20 20:57:21,911 WARN L237 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_bec208d4-1a60-4717-8ae4-d41f86cf8617/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[470037,470050] [2022-11-20 20:57:21,913 WARN L237 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_bec208d4-1a60-4717-8ae4-d41f86cf8617/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[470202,470215] [2022-11-20 20:57:21,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:57:22,283 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:57:22,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:22 WrapperNode [2022-11-20 20:57:22,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:57:22,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:57:22,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:57:22,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:57:22,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:22" (1/1) ... [2022-11-20 20:57:22,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:22" (1/1) ... [2022-11-20 20:57:22,926 INFO L138 Inliner]: procedures = 538, calls = 6342, calls flagged for inlining = 274, calls inlined = 248, statements flattened = 9020 [2022-11-20 20:57:22,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:57:22,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:57:22,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:57:22,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:57:22,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:22" (1/1) ... [2022-11-20 20:57:22,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:22" (1/1) ... [2022-11-20 20:57:23,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:22" (1/1) ... [2022-11-20 20:57:23,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:22" (1/1) ... [2022-11-20 20:57:23,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:22" (1/1) ... [2022-11-20 20:57:23,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:22" (1/1) ... [2022-11-20 20:57:23,458 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:22" (1/1) ... [2022-11-20 20:57:23,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:22" (1/1) ... [2022-11-20 20:57:23,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:57:23,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:57:23,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:57:23,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:57:23,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:22" (1/1) ... [2022-11-20 20:57:23,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:57:23,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec208d4-1a60-4717-8ae4-d41f86cf8617/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:57:23,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec208d4-1a60-4717-8ae4-d41f86cf8617/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:57:23,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec208d4-1a60-4717-8ae4-d41f86cf8617/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:57:23,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_lock_of_islpci_acl [2022-11-20 20:57:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_lock_of_islpci_acl [2022-11-20 20:57:23,770 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2022-11-20 20:57:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2022-11-20 20:57:23,770 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_eth_tx_timeout [2022-11-20 20:57:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_eth_tx_timeout [2022-11-20 20:57:23,770 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-20 20:57:23,771 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-20 20:57:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-20 20:57:23,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 20:57:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 20:57:23,771 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_trigger [2022-11-20 20:57:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_trigger [2022-11-20 20:57:23,772 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 20:57:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 20:57:23,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 20:57:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 20:57:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_mib_mode_helper [2022-11-20 20:57:23,773 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_mib_mode_helper [2022-11-20 20:57:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 20:57:23,773 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 20:57:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-20 20:57:23,774 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-20 20:57:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 20:57:23,774 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 20:57:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set_request [2022-11-20 20:57:23,775 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set_request [2022-11-20 20:57:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2022-11-20 20:57:23,775 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2022-11-20 20:57:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-20 20:57:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_get_state [2022-11-20 20:57:23,776 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_get_state [2022-11-20 20:57:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-20 20:57:23,776 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-20 20:57:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-20 20:57:23,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-20 20:57:23,777 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-20 20:57:23,777 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-20 20:57:23,777 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-20 20:57:23,777 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-20 20:57:23,777 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_release [2022-11-20 20:57:23,778 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_release [2022-11-20 20:57:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 20:57:23,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 20:57:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-20 20:57:23,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-20 20:57:23,779 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 20:57:23,779 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 20:57:23,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_try [2022-11-20 20:57:23,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_try [2022-11-20 20:57:23,779 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-20 20:57:23,780 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-20 20:57:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:57:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_wpa_lock_of_NOT_ARG_SIGN [2022-11-20 20:57:23,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_wpa_lock_of_NOT_ARG_SIGN [2022-11-20 20:57:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure send_simple_event [2022-11-20 20:57:23,781 INFO L138 BoogieDeclarations]: Found implementation of procedure send_simple_event [2022-11-20 20:57:23,781 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-20 20:57:23,781 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-20 20:57:23,781 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 20:57:23,781 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 20:57:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure send_formatted_event [2022-11-20 20:57:23,782 INFO L138 BoogieDeclarations]: Found implementation of procedure send_formatted_event [2022-11-20 20:57:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set [2022-11-20 20:57:23,782 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set [2022-11-20 20:57:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 20:57:23,783 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 20:57:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 20:57:23,783 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 20:57:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 20:57:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_reset [2022-11-20 20:57:23,784 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_reset [2022-11-20 20:57:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 20:57:23,784 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 20:57:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-20 20:57:23,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-20 20:57:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2022-11-20 20:57:23,785 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2022-11-20 20:57:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 20:57:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-20 20:57:23,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-20 20:57:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:57:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 20:57:23,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 20:57:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 20:57:23,786 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 20:57:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-20 20:57:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-20 20:57:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-20 20:57:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-20 20:57:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_open [2022-11-20 20:57:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_open [2022-11-20 20:57:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_resume [2022-11-20 20:57:23,788 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_resume [2022-11-20 20:57:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 20:57:23,788 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 20:57:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 20:57:23,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-20 20:57:23,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-20 20:57:23,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-20 20:57:23,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-20 20:57:23,789 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2022-11-20 20:57:23,789 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2022-11-20 20:57:23,790 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-20 20:57:23,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-20 20:57:23,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:57:23,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 20:57:23,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 20:57:23,791 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 20:57:23,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 20:57:23,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 20:57:23,791 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 20:57:23,791 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 20:57:23,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 20:57:23,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_stats_lock_of_NOT_ARG_SIGN [2022-11-20 20:57:23,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_stats_lock_of_NOT_ARG_SIGN [2022-11-20 20:57:23,792 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-20 20:57:23,792 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-20 20:57:23,793 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-20 20:57:23,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-20 20:57:23,793 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 20:57:23,793 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 20:57:23,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_wpa_lock_of_NOT_ARG_SIGN [2022-11-20 20:57:23,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_wpa_lock_of_NOT_ARG_SIGN [2022-11-20 20:57:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-20 20:57:23,794 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-20 20:57:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-20 20:57:23,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-20 20:57:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2022-11-20 20:57:23,795 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2022-11-20 20:57:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-20 20:57:23,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-20 20:57:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-20 20:57:23,795 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-20 20:57:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_prism54_module_exit_12_2 [2022-11-20 20:57:23,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_prism54_module_exit_12_2 [2022-11-20 20:57:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2022-11-20 20:57:23,796 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2022-11-20 20:57:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-20 20:57:23,797 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-20 20:57:23,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:57:23,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:57:23,797 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2022-11-20 20:57:23,797 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2022-11-20 20:57:23,797 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-20 20:57:23,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-20 20:57:23,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-20 20:57:23,798 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-20 20:57:23,798 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_clear_mac [2022-11-20 20:57:23,798 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_clear_mac [2022-11-20 20:57:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_wpa_bss_ie_get [2022-11-20 20:57:23,799 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_wpa_bss_ie_get [2022-11-20 20:57:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 20:57:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 20:57:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 20:57:23,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 20:57:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-20 20:57:23,800 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-20 20:57:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure handle_request [2022-11-20 20:57:23,800 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_request [2022-11-20 20:57:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_bring_down [2022-11-20 20:57:23,801 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_bring_down [2022-11-20 20:57:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_stats_lock_of_NOT_ARG_SIGN [2022-11-20 20:57:23,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_stats_lock_of_NOT_ARG_SIGN [2022-11-20 20:57:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-20 20:57:23,801 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-20 20:57:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 20:57:23,802 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 20:57:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 20:57:23,802 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 20:57:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-20 20:57:23,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-20 20:57:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-20 20:57:23,803 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-20 20:57:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-20 20:57:23,803 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-20 20:57:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:57:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 20:57:23,804 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 20:57:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_set_state [2022-11-20 20:57:23,804 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_set_state [2022-11-20 20:57:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2022-11-20 20:57:23,804 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2022-11-20 20:57:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 20:57:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set_varlen [2022-11-20 20:57:23,805 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set_varlen [2022-11-20 20:57:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2022-11-20 20:57:23,805 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2022-11-20 20:57:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2022-11-20 20:57:23,806 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2022-11-20 20:57:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 20:57:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_close [2022-11-20 20:57:23,806 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_close [2022-11-20 20:57:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-20 20:57:23,807 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-20 20:57:23,807 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_get_request [2022-11-20 20:57:23,807 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_get_request [2022-11-20 20:57:23,807 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-20 20:57:23,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-20 20:57:23,808 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 20:57:23,808 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 20:57:23,808 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-20 20:57:23,808 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-20 20:57:23,808 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 20:57:23,808 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 20:57:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_remove [2022-11-20 20:57:23,809 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_remove [2022-11-20 20:57:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_w32_flush [2022-11-20 20:57:23,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_w32_flush [2022-11-20 20:57:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-20 20:57:23,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-20 20:57:23,810 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-20 20:57:23,810 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-20 20:57:23,810 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-20 20:57:23,810 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-20 20:57:23,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 20:57:23,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 20:57:23,811 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-20 20:57:23,811 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-20 20:57:23,811 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit_list [2022-11-20 20:57:23,811 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit_list [2022-11-20 20:57:23,812 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-20 20:57:23,812 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-20 20:57:23,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-20 20:57:23,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-20 20:57:23,812 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-20 20:57:23,812 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-20 20:57:23,813 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 20:57:23,813 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 20:57:23,813 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgmt_rx_fill [2022-11-20 20:57:23,813 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgmt_rx_fill [2022-11-20 20:57:23,813 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_transaction [2022-11-20 20:57:23,813 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_transaction [2022-11-20 20:57:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 20:57:23,814 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 20:57:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-20 20:57:23,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-20 20:57:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure channel_of_freq [2022-11-20 20:57:23,815 INFO L138 BoogieDeclarations]: Found implementation of procedure channel_of_freq [2022-11-20 20:57:23,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:57:23,815 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-20 20:57:23,815 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-20 20:57:23,815 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-20 20:57:23,815 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-20 20:57:23,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 20:57:23,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 20:57:23,816 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_free_memory [2022-11-20 20:57:23,816 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_free_memory [2022-11-20 20:57:23,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_islpci_acl [2022-11-20 20:57:23,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_islpci_acl [2022-11-20 20:57:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit [2022-11-20 20:57:23,817 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit [2022-11-20 20:57:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-20 20:57:23,817 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-20 20:57:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32s [2022-11-20 20:57:23,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32s [2022-11-20 20:57:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-20 20:57:23,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-20 20:57:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-20 20:57:23,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-20 20:57:23,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-20 20:57:23,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-20 20:57:23,819 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-20 20:57:23,819 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-20 20:57:23,819 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-20 20:57:23,819 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-20 20:57:23,820 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_in_queue [2022-11-20 20:57:23,820 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_in_queue [2022-11-20 20:57:23,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_islpci_acl [2022-11-20 20:57:23,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_islpci_acl [2022-11-20 20:57:23,820 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-20 20:57:23,821 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-20 20:57:23,821 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-20 20:57:23,821 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-20 20:57:23,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:57:23,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-20 20:57:23,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-20 20:57:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-20 20:57:23,822 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-20 20:57:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_disable_interrupts [2022-11-20 20:57:23,822 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_disable_interrupts [2022-11-20 20:57:25,149 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:57:25,154 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:57:25,793 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 20:57:36,594 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-20 20:57:36,987 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:57:39,341 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:57:39,342 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 20:57:39,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:57:39 BoogieIcfgContainer [2022-11-20 20:57:39,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:57:39,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:57:39,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:57:39,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:57:39,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:57:15" (1/3) ... [2022-11-20 20:57:39,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5767d903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:57:39, skipping insertion in model container [2022-11-20 20:57:39,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:22" (2/3) ... [2022-11-20 20:57:39,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5767d903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:57:39, skipping insertion in model container [2022-11-20 20:57:39,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:57:39" (3/3) ... [2022-11-20 20:57:39,369 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i [2022-11-20 20:57:39,395 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:57:39,395 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-20 20:57:39,534 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:57:39,547 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@49cf0520, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:57:39,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 20:57:39,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 1848 states, 1096 states have (on average 1.311131386861314) internal successors, (1437), 1146 states have internal predecessors, (1437), 618 states have call successors, (618), 131 states have call predecessors, (618), 130 states have return successors, (612), 593 states have call predecessors, (612), 612 states have call successors, (612) [2022-11-20 20:57:39,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 20:57:39,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:57:39,596 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:57:39,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 20:57:39,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:57:39,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1773094722, now seen corresponding path program 1 times [2022-11-20 20:57:39,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:57:39,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061289167] [2022-11-20 20:57:39,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:39,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:57:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:41,684 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-20 20:57:41,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:57:41,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061289167] [2022-11-20 20:57:41,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061289167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:57:41,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:57:41,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:57:41,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569767697] [2022-11-20 20:57:41,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:57:41,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:57:41,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:57:41,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:57:41,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:57:41,740 INFO L87 Difference]: Start difference. First operand has 1848 states, 1096 states have (on average 1.311131386861314) internal successors, (1437), 1146 states have internal predecessors, (1437), 618 states have call successors, (618), 131 states have call predecessors, (618), 130 states have return successors, (612), 593 states have call predecessors, (612), 612 states have call successors, (612) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 20:57:47,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:57:47,795 INFO L93 Difference]: Finished difference Result 5449 states and 8044 transitions. [2022-11-20 20:57:47,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:57:47,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 81 [2022-11-20 20:57:47,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:57:47,865 INFO L225 Difference]: With dead ends: 5449 [2022-11-20 20:57:47,866 INFO L226 Difference]: Without dead ends: 3604 [2022-11-20 20:57:47,895 INFO L412 NwaCegarLoop]: 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 [2022-11-20 20:57:47,900 INFO L413 NwaCegarLoop]: 2896 mSDtfsCounter, 2566 mSDsluCounter, 2277 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2566 SdHoareTripleChecker+Valid, 5173 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:57:47,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2566 Valid, 5173 Invalid, 717 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-20 20:57:47,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2022-11-20 20:57:48,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 3598. [2022-11-20 20:57:48,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 2147 states have (on average 1.3041453190498369) internal successors, (2800), 2245 states have internal predecessors, (2800), 1191 states have call successors, (1191), 257 states have call predecessors, (1191), 256 states have return successors, (1187), 1149 states have call predecessors, (1187), 1187 states have call successors, (1187) [2022-11-20 20:57:48,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5178 transitions. [2022-11-20 20:57:48,354 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5178 transitions. Word has length 81 [2022-11-20 20:57:48,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:57:48,356 INFO L495 AbstractCegarLoop]: Abstraction has 3598 states and 5178 transitions. [2022-11-20 20:57:48,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 20:57:48,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5178 transitions. [2022-11-20 20:57:48,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 20:57:48,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:57:48,362 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:57:48,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:57:48,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 20:57:48,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:57:48,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1078823123, now seen corresponding path program 1 times [2022-11-20 20:57:48,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:57:48,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509082984] [2022-11-20 20:57:48,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:48,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:57:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:49,645 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-20 20:57:49,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:57:49,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509082984] [2022-11-20 20:57:49,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509082984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:57:49,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:57:49,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:57:49,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826265184] [2022-11-20 20:57:49,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:57:49,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:57:49,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:57:49,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:57:49,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:57:49,663 INFO L87 Difference]: Start difference. First operand 3598 states and 5178 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 20:57:55,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:57:55,189 INFO L93 Difference]: Finished difference Result 8958 states and 12889 transitions. [2022-11-20 20:57:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:57:55,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 81 [2022-11-20 20:57:55,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:57:55,238 INFO L225 Difference]: With dead ends: 8958 [2022-11-20 20:57:55,239 INFO L226 Difference]: Without dead ends: 5373 [2022-11-20 20:57:55,264 INFO L412 NwaCegarLoop]: 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 [2022-11-20 20:57:55,265 INFO L413 NwaCegarLoop]: 2898 mSDtfsCounter, 2567 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2567 SdHoareTripleChecker+Valid, 5185 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:57:55,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2567 Valid, 5185 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-20 20:57:55,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5373 states. [2022-11-20 20:57:55,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5373 to 5351. [2022-11-20 20:57:55,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5351 states, 3190 states have (on average 1.3031347962382445) internal successors, (4157), 3339 states have internal predecessors, (4157), 1772 states have call successors, (1772), 386 states have call predecessors, (1772), 385 states have return successors, (1768), 1706 states have call predecessors, (1768), 1768 states have call successors, (1768) [2022-11-20 20:57:55,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5351 states to 5351 states and 7697 transitions. [2022-11-20 20:57:55,740 INFO L78 Accepts]: Start accepts. Automaton has 5351 states and 7697 transitions. Word has length 81 [2022-11-20 20:57:55,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:57:55,741 INFO L495 AbstractCegarLoop]: Abstraction has 5351 states and 7697 transitions. [2022-11-20 20:57:55,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 20:57:55,741 INFO L276 IsEmpty]: Start isEmpty. Operand 5351 states and 7697 transitions. [2022-11-20 20:57:55,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-20 20:57:55,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:57:55,745 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:57:55,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:57:55,746 INFO L420 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 20:57:55,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:57:55,747 INFO L85 PathProgramCache]: Analyzing trace with hash 776213406, now seen corresponding path program 1 times [2022-11-20 20:57:55,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:57:55,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647458501] [2022-11-20 20:57:55,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:55,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:57:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-20 20:57:58,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:57:58,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647458501] [2022-11-20 20:57:58,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647458501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:57:58,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:57:58,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:57:58,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931449728] [2022-11-20 20:57:58,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:57:58,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:57:58,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:57:58,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:57:58,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:57:58,233 INFO L87 Difference]: Start difference. First operand 5351 states and 7697 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 20:58:11,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:58:16,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:16,100 INFO L93 Difference]: Finished difference Result 16156 states and 23117 transitions. [2022-11-20 20:58:16,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:58:16,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2022-11-20 20:58:16,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:16,194 INFO L225 Difference]: With dead ends: 16156 [2022-11-20 20:58:16,195 INFO L226 Difference]: Without dead ends: 10818 [2022-11-20 20:58:16,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:58:16,246 INFO L413 NwaCegarLoop]: 3303 mSDtfsCounter, 6096 mSDsluCounter, 5371 mSDsCounter, 0 mSdLazyCounter, 3441 mSolverCounterSat, 936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6230 SdHoareTripleChecker+Valid, 8674 SdHoareTripleChecker+Invalid, 4377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 936 IncrementalHoareTripleChecker+Valid, 3441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:16,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6230 Valid, 8674 Invalid, 4377 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [936 Valid, 3441 Invalid, 0 Unknown, 0 Unchecked, 16.7s Time] [2022-11-20 20:58:16,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10818 states. [2022-11-20 20:58:17,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10818 to 10766. [2022-11-20 20:58:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10766 states, 6478 states have (on average 1.302562519296079) internal successors, (8438), 6806 states have internal predecessors, (8438), 3450 states have call successors, (3450), 839 states have call predecessors, (3450), 834 states have return successors, (3446), 3294 states have call predecessors, (3446), 3446 states have call successors, (3446) [2022-11-20 20:58:17,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10766 states to 10766 states and 15334 transitions. [2022-11-20 20:58:17,354 INFO L78 Accepts]: Start accepts. Automaton has 10766 states and 15334 transitions. Word has length 84 [2022-11-20 20:58:17,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:17,355 INFO L495 AbstractCegarLoop]: Abstraction has 10766 states and 15334 transitions. [2022-11-20 20:58:17,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 20:58:17,357 INFO L276 IsEmpty]: Start isEmpty. Operand 10766 states and 15334 transitions. [2022-11-20 20:58:17,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 20:58:17,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:17,361 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:17,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:58:17,362 INFO L420 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 20:58:17,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:17,363 INFO L85 PathProgramCache]: Analyzing trace with hash 210966089, now seen corresponding path program 1 times [2022-11-20 20:58:17,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:17,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875674978] [2022-11-20 20:58:17,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:17,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-20 20:58:18,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:18,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875674978] [2022-11-20 20:58:18,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875674978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:18,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:58:18,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:58:18,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903631360] [2022-11-20 20:58:18,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:18,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:58:18,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:18,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:58:18,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:18,253 INFO L87 Difference]: Start difference. First operand 10766 states and 15334 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 20:58:24,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:58:25,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:25,139 INFO L93 Difference]: Finished difference Result 26699 states and 37859 transitions. [2022-11-20 20:58:25,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:58:25,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 91 [2022-11-20 20:58:25,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:25,274 INFO L225 Difference]: With dead ends: 26699 [2022-11-20 20:58:25,274 INFO L226 Difference]: Without dead ends: 15946 [2022-11-20 20:58:25,344 INFO L412 NwaCegarLoop]: 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 [2022-11-20 20:58:25,345 INFO L413 NwaCegarLoop]: 2860 mSDtfsCounter, 2451 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2451 SdHoareTripleChecker+Valid, 5090 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:25,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2451 Valid, 5090 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-20 20:58:25,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15946 states. [2022-11-20 20:58:26,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15946 to 15898. [2022-11-20 20:58:26,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15898 states, 9560 states have (on average 1.2940376569037657) internal successors, (12371), 10020 states have internal predecessors, (12371), 5044 states have call successors, (5044), 1307 states have call predecessors, (5044), 1290 states have return successors, (5044), 4816 states have call predecessors, (5044), 5040 states have call successors, (5044) [2022-11-20 20:58:26,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15898 states to 15898 states and 22459 transitions. [2022-11-20 20:58:26,554 INFO L78 Accepts]: Start accepts. Automaton has 15898 states and 22459 transitions. Word has length 91 [2022-11-20 20:58:26,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:26,555 INFO L495 AbstractCegarLoop]: Abstraction has 15898 states and 22459 transitions. [2022-11-20 20:58:26,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 20:58:26,555 INFO L276 IsEmpty]: Start isEmpty. Operand 15898 states and 22459 transitions. [2022-11-20 20:58:26,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 20:58:26,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:26,567 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:26,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:58:26,568 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 20:58:26,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:26,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1647145742, now seen corresponding path program 1 times [2022-11-20 20:58:26,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:26,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782734342] [2022-11-20 20:58:26,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:26,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-20 20:58:28,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:28,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782734342] [2022-11-20 20:58:28,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782734342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:28,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:58:28,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:58:28,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227709798] [2022-11-20 20:58:28,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:28,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:58:28,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:28,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:58:28,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:58:28,979 INFO L87 Difference]: Start difference. First operand 15898 states and 22459 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 20:58:35,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:58:37,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:58:40,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:40,598 INFO L93 Difference]: Finished difference Result 15904 states and 22464 transitions. [2022-11-20 20:58:40,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:58:40,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 123 [2022-11-20 20:58:40,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:40,705 INFO L225 Difference]: With dead ends: 15904 [2022-11-20 20:58:40,705 INFO L226 Difference]: Without dead ends: 15902 [2022-11-20 20:58:40,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:58:40,717 INFO L413 NwaCegarLoop]: 2290 mSDtfsCounter, 2603 mSDsluCounter, 4572 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2609 SdHoareTripleChecker+Valid, 6862 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:40,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2609 Valid, 6862 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1051 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2022-11-20 20:58:40,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15902 states. [2022-11-20 20:58:41,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15902 to 15902. [2022-11-20 20:58:41,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15902 states, 9563 states have (on average 1.2939454146188434) internal successors, (12374), 10023 states have internal predecessors, (12374), 5044 states have call successors, (5044), 1308 states have call predecessors, (5044), 1291 states have return successors, (5044), 4816 states have call predecessors, (5044), 5040 states have call successors, (5044) [2022-11-20 20:58:41,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15902 states to 15902 states and 22462 transitions. [2022-11-20 20:58:41,971 INFO L78 Accepts]: Start accepts. Automaton has 15902 states and 22462 transitions. Word has length 123 [2022-11-20 20:58:41,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:41,973 INFO L495 AbstractCegarLoop]: Abstraction has 15902 states and 22462 transitions. [2022-11-20 20:58:41,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 20:58:41,974 INFO L276 IsEmpty]: Start isEmpty. Operand 15902 states and 22462 transitions. [2022-11-20 20:58:41,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-20 20:58:41,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:41,978 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 5, 5, 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] [2022-11-20 20:58:41,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:58:41,979 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 20:58:41,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:41,979 INFO L85 PathProgramCache]: Analyzing trace with hash -210931868, now seen corresponding path program 1 times [2022-11-20 20:58:41,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:41,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121754532] [2022-11-20 20:58:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:41,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-11-20 20:58:44,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:44,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121754532] [2022-11-20 20:58:44,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121754532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:44,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:58:44,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:58:44,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355597804] [2022-11-20 20:58:44,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:44,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:58:44,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:44,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:58:44,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:58:44,297 INFO L87 Difference]: Start difference. First operand 15902 states and 22462 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 20:58:50,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:50,229 INFO L93 Difference]: Finished difference Result 15908 states and 22467 transitions. [2022-11-20 20:58:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:58:50,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 131 [2022-11-20 20:58:50,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:50,327 INFO L225 Difference]: With dead ends: 15908 [2022-11-20 20:58:50,327 INFO L226 Difference]: Without dead ends: 15906 [2022-11-20 20:58:50,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:58:50,342 INFO L413 NwaCegarLoop]: 2293 mSDtfsCounter, 2597 mSDsluCounter, 4572 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2602 SdHoareTripleChecker+Valid, 6865 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:50,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2602 Valid, 6865 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 20:58:50,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15906 states. [2022-11-20 20:58:51,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15906 to 15906. [2022-11-20 20:58:51,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15906 states, 9566 states have (on average 1.2938532301902572) internal successors, (12377), 10026 states have internal predecessors, (12377), 5044 states have call successors, (5044), 1309 states have call predecessors, (5044), 1292 states have return successors, (5044), 4816 states have call predecessors, (5044), 5040 states have call successors, (5044) [2022-11-20 20:58:51,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15906 states to 15906 states and 22465 transitions. [2022-11-20 20:58:51,589 INFO L78 Accepts]: Start accepts. Automaton has 15906 states and 22465 transitions. Word has length 131 [2022-11-20 20:58:51,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:51,590 INFO L495 AbstractCegarLoop]: Abstraction has 15906 states and 22465 transitions. [2022-11-20 20:58:51,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 20:58:51,590 INFO L276 IsEmpty]: Start isEmpty. Operand 15906 states and 22465 transitions. [2022-11-20 20:58:51,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-20 20:58:51,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:51,596 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 5, 5, 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] [2022-11-20 20:58:51,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:58:51,596 INFO L420 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 20:58:51,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:51,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1344893329, now seen corresponding path program 1 times [2022-11-20 20:58:51,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:51,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070396548] [2022-11-20 20:58:51,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:51,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:53,869 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-11-20 20:58:53,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:53,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070396548] [2022-11-20 20:58:53,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070396548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:53,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:58:53,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:58:53,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435874648] [2022-11-20 20:58:53,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:53,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:58:53,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:53,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:58:53,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:58:53,874 INFO L87 Difference]: Start difference. First operand 15906 states and 22465 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:59:06,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:59:06,272 INFO L93 Difference]: Finished difference Result 30878 states and 43836 transitions. [2022-11-20 20:59:06,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:59:06,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 137 [2022-11-20 20:59:06,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:59:06,448 INFO L225 Difference]: With dead ends: 30878 [2022-11-20 20:59:06,448 INFO L226 Difference]: Without dead ends: 30876 [2022-11-20 20:59:06,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:59:06,463 INFO L413 NwaCegarLoop]: 3012 mSDtfsCounter, 2581 mSDsluCounter, 8244 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2585 SdHoareTripleChecker+Valid, 11256 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:59:06,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2585 Valid, 11256 Invalid, 1465 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-11-20 20:59:06,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30876 states. [2022-11-20 20:59:08,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30876 to 30834. [2022-11-20 20:59:08,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30834 states, 18535 states have (on average 1.2953871054761263) internal successors, (24010), 19461 states have internal predecessors, (24010), 9832 states have call successors, (9832), 2531 states have call predecessors, (9832), 2463 states have return successors, (9948), 9325 states have call predecessors, (9948), 9824 states have call successors, (9948) [2022-11-20 20:59:08,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30834 states to 30834 states and 43790 transitions. [2022-11-20 20:59:08,704 INFO L78 Accepts]: Start accepts. Automaton has 30834 states and 43790 transitions. Word has length 137 [2022-11-20 20:59:08,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:59:08,705 INFO L495 AbstractCegarLoop]: Abstraction has 30834 states and 43790 transitions. [2022-11-20 20:59:08,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 20:59:08,705 INFO L276 IsEmpty]: Start isEmpty. Operand 30834 states and 43790 transitions. [2022-11-20 20:59:08,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-20 20:59:08,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:59:08,710 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 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] [2022-11-20 20:59:08,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 20:59:08,711 INFO L420 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 20:59:08,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:59:08,711 INFO L85 PathProgramCache]: Analyzing trace with hash -305792136, now seen corresponding path program 1 times [2022-11-20 20:59:08,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:59:08,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692821943] [2022-11-20 20:59:08,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:59:08,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:59:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:59:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-11-20 20:59:11,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:59:11,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692821943] [2022-11-20 20:59:11,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692821943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:59:11,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:59:11,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:59:11,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862802639] [2022-11-20 20:59:11,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:59:11,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:59:11,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:59:11,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:59:11,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:59:11,086 INFO L87 Difference]: Start difference. First operand 30834 states and 43790 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 20:59:22,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:59:22,708 INFO L93 Difference]: Finished difference Result 60150 states and 86594 transitions. [2022-11-20 20:59:22,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:59:22,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 142 [2022-11-20 20:59:22,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:59:23,075 INFO L225 Difference]: With dead ends: 60150 [2022-11-20 20:59:23,076 INFO L226 Difference]: Without dead ends: 60148 [2022-11-20 20:59:23,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:59:23,114 INFO L413 NwaCegarLoop]: 2964 mSDtfsCounter, 2551 mSDsluCounter, 8225 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2554 SdHoareTripleChecker+Valid, 11189 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:59:23,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2554 Valid, 11189 Invalid, 1441 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-20 20:59:23,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60148 states. [2022-11-20 20:59:27,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60148 to 60120. [2022-11-20 20:59:28,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60120 states, 36094 states have (on average 1.2952568293899263) internal successors, (46751), 37914 states have internal predecessors, (46751), 19156 states have call successors, (19156), 5002 states have call predecessors, (19156), 4866 states have return successors, (20660), 18123 states have call predecessors, (20660), 19140 states have call successors, (20660) [2022-11-20 20:59:28,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60120 states to 60120 states and 86567 transitions. [2022-11-20 20:59:28,939 INFO L78 Accepts]: Start accepts. Automaton has 60120 states and 86567 transitions. Word has length 142 [2022-11-20 20:59:28,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:59:28,942 INFO L495 AbstractCegarLoop]: Abstraction has 60120 states and 86567 transitions. [2022-11-20 20:59:28,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 20:59:28,943 INFO L276 IsEmpty]: Start isEmpty. Operand 60120 states and 86567 transitions. [2022-11-20 20:59:28,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 20:59:28,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:59:28,949 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 4, 4, 3, 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] [2022-11-20 20:59:28,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 20:59:28,949 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 20:59:28,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:59:28,950 INFO L85 PathProgramCache]: Analyzing trace with hash 212827415, now seen corresponding path program 1 times [2022-11-20 20:59:28,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:59:28,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827675934] [2022-11-20 20:59:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:59:28,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:59:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:59:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 20:59:30,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:59:30,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827675934] [2022-11-20 20:59:30,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827675934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:59:30,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:59:30,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:59:30,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819191717] [2022-11-20 20:59:30,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:59:30,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:59:30,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:59:30,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:59:30,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:59:30,411 INFO L87 Difference]: Start difference. First operand 60120 states and 86567 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 20:59:43,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:59:46,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:00:00,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:00:00,557 INFO L93 Difference]: Finished difference Result 178992 states and 257881 transitions. [2022-11-20 21:00:00,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:00:00,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 138 [2022-11-20 21:00:00,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:00:01,535 INFO L225 Difference]: With dead ends: 178992 [2022-11-20 21:00:01,536 INFO L226 Difference]: Without dead ends: 119336 [2022-11-20 21:00:02,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:00:02,033 INFO L413 NwaCegarLoop]: 5011 mSDtfsCounter, 4905 mSDsluCounter, 6438 mSDsCounter, 0 mSdLazyCounter, 5648 mSolverCounterSat, 150 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5034 SdHoareTripleChecker+Valid, 11449 SdHoareTripleChecker+Invalid, 5799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 5648 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:00:02,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5034 Valid, 11449 Invalid, 5799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [150 Valid, 5648 Invalid, 1 Unknown, 0 Unchecked, 22.1s Time] [2022-11-20 21:00:02,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119336 states. [2022-11-20 21:00:10,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119336 to 118900. [2022-11-20 21:00:10,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118900 states, 71312 states have (on average 1.2957566748934262) internal successors, (92403), 74988 states have internal predecessors, (92403), 37944 states have call successors, (37944), 9908 states have call predecessors, (37944), 9640 states have return successors, (40968), 35835 states have call predecessors, (40968), 37928 states have call successors, (40968) [2022-11-20 21:00:11,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118900 states to 118900 states and 171315 transitions. [2022-11-20 21:00:11,301 INFO L78 Accepts]: Start accepts. Automaton has 118900 states and 171315 transitions. Word has length 138 [2022-11-20 21:00:11,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:00:11,302 INFO L495 AbstractCegarLoop]: Abstraction has 118900 states and 171315 transitions. [2022-11-20 21:00:11,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 21:00:11,302 INFO L276 IsEmpty]: Start isEmpty. Operand 118900 states and 171315 transitions. [2022-11-20 21:00:11,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-20 21:00:11,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:00:11,315 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 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] [2022-11-20 21:00:11,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 21:00:11,315 INFO L420 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 21:00:11,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:00:11,321 INFO L85 PathProgramCache]: Analyzing trace with hash 20244547, now seen corresponding path program 1 times [2022-11-20 21:00:11,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:00:11,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020132087] [2022-11-20 21:00:11,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:00:11,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:00:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:00:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-11-20 21:00:13,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:00:13,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020132087] [2022-11-20 21:00:13,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020132087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:00:13,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:00:13,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 21:00:13,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240348432] [2022-11-20 21:00:13,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:00:13,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:00:13,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:00:13,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:00:13,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:00:13,767 INFO L87 Difference]: Start difference. First operand 118900 states and 171315 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (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) [2022-11-20 21:00:26,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:00:26,375 INFO L93 Difference]: Finished difference Result 118918 states and 171332 transitions. [2022-11-20 21:00:26,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:00:26,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (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 146 [2022-11-20 21:00:26,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted.