./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ce7b7e06b36a72b3de911fb70c1b245fd97c856ddcef7fa1f63b6ddc09812498 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:21:24,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:21:24,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:21:24,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:21:24,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:21:24,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:21:24,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:21:24,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:21:24,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:21:24,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:21:24,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:21:24,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:21:24,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:21:24,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:21:24,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:21:24,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:21:24,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:21:24,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:21:24,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:21:24,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:21:24,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:21:24,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:21:24,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:21:24,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:21:24,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:21:24,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:21:24,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:21:24,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:21:24,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:21:24,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:21:24,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:21:24,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:21:24,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:21:24,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:21:24,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:21:24,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:21:24,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:21:24,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:21:24,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:21:24,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:21:24,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:21:24,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:21:24,538 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:21:24,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:21:24,539 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:21:24,539 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:21:24,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:21:24,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:21:24,547 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:21:24,548 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:21:24,548 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:21:24,548 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:21:24,548 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:21:24,548 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:21:24,549 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:21:24,549 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:21:24,549 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:21:24,549 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:21:24,550 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:21:24,550 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:21:24,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:21:24,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:21:24,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:21:24,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:21:24,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:21:24,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:21:24,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:21:24,552 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:21:24,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:21:24,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:21:24,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:21:24,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:21:24,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:21:24,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:21:24,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:21:24,555 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:21:24,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:21:24,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:21:24,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:21:24,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:21:24,557 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce7b7e06b36a72b3de911fb70c1b245fd97c856ddcef7fa1f63b6ddc09812498 [2021-11-25 18:21:24,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:21:24,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:21:24,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:21:24,878 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:21:24,879 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:21:24,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-25 18:21:24,958 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/bin/utaipan-eEHZpOm5b7/data/f211c1ea8/ed59ffb25d224837be0baa763313f23e/FLAG3b4c37edd [2021-11-25 18:21:26,060 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:21:26,061 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-25 18:21:26,145 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/bin/utaipan-eEHZpOm5b7/data/f211c1ea8/ed59ffb25d224837be0baa763313f23e/FLAG3b4c37edd [2021-11-25 18:21:26,321 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/bin/utaipan-eEHZpOm5b7/data/f211c1ea8/ed59ffb25d224837be0baa763313f23e [2021-11-25 18:21:26,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:21:26,326 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:21:26,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:21:26,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:21:26,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:21:26,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:21:26" (1/1) ... [2021-11-25 18:21:26,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436f19ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:26, skipping insertion in model container [2021-11-25 18:21:26,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:21:26" (1/1) ... [2021-11-25 18:21:26,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:21:26,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:21:32,501 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[493165,493178] [2021-11-25 18:21:32,504 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[493334,493347] [2021-11-25 18:21:32,506 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[493501,493514] [2021-11-25 18:21:32,514 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[493669,493682] [2021-11-25 18:21:32,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:21:32,637 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:21:33,182 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[493165,493178] [2021-11-25 18:21:33,183 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[493334,493347] [2021-11-25 18:21:33,183 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[493501,493514] [2021-11-25 18:21:33,184 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[493669,493682] [2021-11-25 18:21:33,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:21:33,559 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:21:33,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33 WrapperNode [2021-11-25 18:21:33,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:21:33,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:21:33,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:21:33,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:21:33,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:33,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:34,111 INFO L137 Inliner]: procedures = 688, calls = 4234, calls flagged for inlining = 342, calls inlined = 319, statements flattened = 10220 [2021-11-25 18:21:34,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:21:34,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:21:34,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:21:34,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:21:34,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:34,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:34,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:34,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:34,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:34,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:34,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:34,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:21:34,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:21:34,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:21:34,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:21:34,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:34,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:21:34,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:21:34,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:21:34,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b38fe48-d68b-4603-87fc-16a411605f3a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:21:34,806 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-25 18:21:34,807 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-25 18:21:34,807 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_read [2021-11-25 18:21:34,807 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_read [2021-11-25 18:21:34,807 INFO L130 BoogieDeclarations]: Found specification of procedure cas_pcs_link_check [2021-11-25 18:21:34,807 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_pcs_link_check [2021-11-25 18:21:34,807 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 18:21:34,808 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 18:21:34,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:21:34,808 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:21:34,808 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-25 18:21:34,808 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-25 18:21:34,808 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-25 18:21:34,809 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-25 18:21:34,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:21:34,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:21:34,809 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mii_link_check [2021-11-25 18:21:34,809 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mii_link_check [2021-11-25 18:21:34,809 INFO L130 BoogieDeclarations]: Found specification of procedure cas_calc_tabort [2021-11-25 18:21:34,810 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_calc_tabort [2021-11-25 18:21:34,810 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2021-11-25 18:21:34,810 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2021-11-25 18:21:34,810 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2021-11-25 18:21:34,810 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2021-11-25 18:21:34,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:21:34,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:21:34,811 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-25 18:21:34,811 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-25 18:21:34,811 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 18:21:34,812 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 18:21:34,812 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 18:21:34,812 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 18:21:34,812 INFO L130 BoogieDeclarations]: Found specification of procedure cas_lock_tx [2021-11-25 18:21:34,813 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_lock_tx [2021-11-25 18:21:34,813 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 18:21:34,813 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 18:21:34,813 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 18:21:34,813 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 18:21:34,814 INFO L130 BoogieDeclarations]: Found specification of procedure cas_disable_irq [2021-11-25 18:21:34,814 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_disable_irq [2021-11-25 18:21:34,814 INFO L130 BoogieDeclarations]: Found specification of procedure cas_free_rxds [2021-11-25 18:21:34,814 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_free_rxds [2021-11-25 18:21:34,815 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_page [2021-11-25 18:21:34,815 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_page [2021-11-25 18:21:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure cas_open [2021-11-25 18:21:34,816 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_open [2021-11-25 18:21:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure cas_interrupt [2021-11-25 18:21:34,816 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_interrupt [2021-11-25 18:21:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure cas_tx_tiny_free [2021-11-25 18:21:34,817 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_tx_tiny_free [2021-11-25 18:21:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure PageTail [2021-11-25 18:21:34,817 INFO L138 BoogieDeclarations]: Found implementation of procedure PageTail [2021-11-25 18:21:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure tx_tiny_map [2021-11-25 18:21:34,817 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_tiny_map [2021-11-25 18:21:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_init [2021-11-25 18:21:34,818 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_init [2021-11-25 18:21:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2021-11-25 18:21:34,819 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2021-11-25 18:21:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size_set [2021-11-25 18:21:34,819 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size_set [2021-11-25 18:21:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 18:21:34,819 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 18:21:34,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:21:34,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:21:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure cas_enable_irq [2021-11-25 18:21:34,820 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_enable_irq [2021-11-25 18:21:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 18:21:34,821 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 18:21:34,821 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 18:21:34,821 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 18:21:34,821 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_dequeue [2021-11-25 18:21:34,822 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_dequeue [2021-11-25 18:21:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-25 18:21:34,822 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-25 18:21:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 18:21:34,822 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 18:21:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:21:34,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:21:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 18:21:34,824 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 18:21:34,824 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-25 18:21:34,824 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-25 18:21:34,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:21:34,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_108 [2021-11-25 18:21:34,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_108 [2021-11-25 18:21:34,825 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-11-25 18:21:34,826 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-11-25 18:21:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure cas_set_multicast [2021-11-25 18:21:34,827 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_set_multicast [2021-11-25 18:21:34,827 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 18:21:34,827 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 18:21:34,827 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-25 18:21:34,827 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-25 18:21:34,827 INFO L130 BoogieDeclarations]: Found specification of procedure cas_spare_free [2021-11-25 18:21:34,828 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_spare_free [2021-11-25 18:21:34,828 INFO L130 BoogieDeclarations]: Found specification of procedure cas_tx_timeout [2021-11-25 18:21:34,828 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_tx_timeout [2021-11-25 18:21:34,828 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:21:34,828 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:21:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure cas_read_pcs_link_mode [2021-11-25 18:21:34,829 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_read_pcs_link_mode [2021-11-25 18:21:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 18:21:34,829 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 18:21:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:21:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure cas_close [2021-11-25 18:21:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_close [2021-11-25 18:21:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_swap [2021-11-25 18:21:34,833 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_swap [2021-11-25 18:21:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 18:21:34,834 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 18:21:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure cas_netpoll [2021-11-25 18:21:34,835 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_netpoll [2021-11-25 18:21:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure cas_hard_reset [2021-11-25 18:21:34,836 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_hard_reset [2021-11-25 18:21:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 18:21:34,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 18:21:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:21:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:21:34,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:21:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure cas_rxc_init [2021-11-25 18:21:34,844 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_rxc_init [2021-11-25 18:21:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:21:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:21:34,845 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:21:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure cas_clear_mac_err [2021-11-25 18:21:34,845 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_clear_mac_err [2021-11-25 18:21:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 18:21:34,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 18:21:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:21:34,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:21:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 18:21:34,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 18:21:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-25 18:21:34,846 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-25 18:21:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure cas_remove_one [2021-11-25 18:21:34,846 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_remove_one [2021-11-25 18:21:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_NOT_ARG_SIGN [2021-11-25 18:21:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_NOT_ARG_SIGN [2021-11-25 18:21:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 18:21:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 18:21:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 18:21:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 18:21:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:21:34,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:21:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2021-11-25 18:21:34,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2021-11-25 18:21:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:21:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 18:21:34,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 18:21:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:21:34,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:21:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-25 18:21:34,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-25 18:21:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:21:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_init [2021-11-25 18:21:34,849 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_init [2021-11-25 18:21:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:21:34,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:21:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 18:21:34,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 18:21:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:21:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 18:21:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:21:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:21:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure cas_set_link_modes [2021-11-25 18:21:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_set_link_modes [2021-11-25 18:21:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure cas_read_mii_link_mode [2021-11-25 18:21:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_read_mii_link_mode [2021-11-25 18:21:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure __list_splice [2021-11-25 18:21:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_splice [2021-11-25 18:21:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 18:21:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 18:21:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 18:21:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 18:21:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-25 18:21:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-25 18:21:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure kmap_atomic [2021-11-25 18:21:34,853 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap_atomic [2021-11-25 18:21:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 18:21:34,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 18:21:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 18:21:34,853 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 18:21:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 18:21:34,854 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 18:21:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 18:21:34,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 18:21:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure csum_unfold [2021-11-25 18:21:34,854 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_unfold [2021-11-25 18:21:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 18:21:34,854 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 18:21:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure cas_entropy_gather [2021-11-25 18:21:34,855 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_entropy_gather [2021-11-25 18:21:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure cas_resume [2021-11-25 18:21:34,855 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_resume [2021-11-25 18:21:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:21:34,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:21:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_alloc [2021-11-25 18:21:34,855 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_alloc [2021-11-25 18:21:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:21:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:21:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:21:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:21:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:21:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:21:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 18:21:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 18:21:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mif_poll [2021-11-25 18:21:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mif_poll [2021-11-25 18:21:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 18:21:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 18:21:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure cas_unlock_tx [2021-11-25 18:21:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_unlock_tx [2021-11-25 18:21:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 18:21:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 18:21:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_133 [2021-11-25 18:21:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_133 [2021-11-25 18:21:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice [2021-11-25 18:21:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice [2021-11-25 18:21:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_135 [2021-11-25 18:21:34,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_135 [2021-11-25 18:21:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-25 18:21:34,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-25 18:21:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub [2021-11-25 18:21:34,859 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub [2021-11-25 18:21:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-25 18:21:34,859 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-25 18:21:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:21:34,860 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:21:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 18:21:34,860 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 18:21:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 18:21:34,860 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 18:21:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure tx_tiny_buf [2021-11-25 18:21:34,865 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_tiny_buf [2021-11-25 18:21:34,865 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mac_reset [2021-11-25 18:21:34,865 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mac_reset [2021-11-25 18:21:34,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_cas [2021-11-25 18:21:34,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_cas [2021-11-25 18:21:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:21:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:21:34,866 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:21:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_frag_set_page [2021-11-25 18:21:34,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_frag_set_page [2021-11-25 18:21:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:21:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure cas_get_regs_len [2021-11-25 18:21:34,867 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_get_regs_len [2021-11-25 18:21:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure cas_reset [2021-11-25 18:21:34,868 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_reset [2021-11-25 18:21:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_NOT_ARG_SIGN [2021-11-25 18:21:34,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_NOT_ARG_SIGN [2021-11-25 18:21:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2021-11-25 18:21:34,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2021-11-25 18:21:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure cas_post_page [2021-11-25 18:21:34,868 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_post_page [2021-11-25 18:21:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:21:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-25 18:21:34,869 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-25 18:21:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure cas_nway_reset [2021-11-25 18:21:34,869 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_nway_reset [2021-11-25 18:21:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 18:21:34,869 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 18:21:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:21:34,870 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:21:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:21:34,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:21:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure cas_setup_multicast [2021-11-25 18:21:34,870 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_setup_multicast [2021-11-25 18:21:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_powerdown [2021-11-25 18:21:34,870 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_powerdown [2021-11-25 18:21:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure cas_post_rxds_ringN [2021-11-25 18:21:34,871 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_post_rxds_ringN [2021-11-25 18:21:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-25 18:21:34,871 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-25 18:21:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure cas_vpd_match [2021-11-25 18:21:34,871 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_vpd_match [2021-11-25 18:21:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_83 [2021-11-25 18:21:34,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_83 [2021-11-25 18:21:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_81 [2021-11-25 18:21:34,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_81 [2021-11-25 18:21:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-25 18:21:34,872 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-25 18:21:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2021-11-25 18:21:34,872 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2021-11-25 18:21:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 18:21:34,872 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 18:21:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure page_count [2021-11-25 18:21:34,873 INFO L138 BoogieDeclarations]: Found implementation of procedure page_count [2021-11-25 18:21:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 18:21:34,873 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 18:21:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_77 [2021-11-25 18:21:34,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_77 [2021-11-25 18:21:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure cas_shutdown [2021-11-25 18:21:34,873 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_shutdown [2021-11-25 18:21:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure cas_begin_auto_negotiation [2021-11-25 18:21:34,874 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_begin_auto_negotiation [2021-11-25 18:21:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-25 18:21:34,874 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-25 18:21:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 18:21:34,874 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 18:21:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure cas_write_txd [2021-11-25 18:21:34,874 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_write_txd [2021-11-25 18:21:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:21:34,875 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:21:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_frag_ref [2021-11-25 18:21:34,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_frag_ref [2021-11-25 18:21:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:21:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:21:34,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:21:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_82 [2021-11-25 18:21:34,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_82 [2021-11-25 18:21:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_84 [2021-11-25 18:21:34,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_84 [2021-11-25 18:21:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_79 [2021-11-25 18:21:34,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_79 [2021-11-25 18:21:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-25 18:21:34,876 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-25 18:21:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure cas_init_hw [2021-11-25 18:21:34,877 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_init_hw [2021-11-25 18:21:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure cas_clean_rings [2021-11-25 18:21:34,877 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_clean_rings [2021-11-25 18:21:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_free [2021-11-25 18:21:34,877 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_free [2021-11-25 18:21:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-25 18:21:34,877 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-25 18:21:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_write [2021-11-25 18:21:34,878 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_write [2021-11-25 18:21:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:21:34,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:21:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-25 18:21:34,878 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-25 18:21:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-25 18:21:34,879 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-25 18:21:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure cas_spare_recover [2021-11-25 18:21:34,879 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_spare_recover [2021-11-25 18:21:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2021-11-25 18:21:34,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2021-11-25 18:21:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 18:21:34,879 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 18:21:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure cas_get_stats [2021-11-25 18:21:34,880 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_get_stats [2021-11-25 18:21:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 18:21:34,880 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 18:21:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure __kunmap_atomic [2021-11-25 18:21:34,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __kunmap_atomic [2021-11-25 18:21:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:21:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:21:34,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:21:34,881 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-25 18:21:34,881 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-25 18:21:34,881 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2021-11-25 18:21:34,881 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2021-11-25 18:21:34,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_107 [2021-11-25 18:21:34,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_107 [2021-11-25 18:21:36,208 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:21:36,218 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:21:36,644 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:25:14,961 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:25:15,210 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:25:18,809 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:25:18,809 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 18:25:18,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:25:18 BoogieIcfgContainer [2021-11-25 18:25:18,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:25:18,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:25:18,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:25:18,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:25:18,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:21:26" (1/3) ... [2021-11-25 18:25:18,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d14bcfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:25:18, skipping insertion in model container [2021-11-25 18:25:18,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (2/3) ... [2021-11-25 18:25:18,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d14bcfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:25:18, skipping insertion in model container [2021-11-25 18:25:18,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:25:18" (3/3) ... [2021-11-25 18:25:18,830 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-25 18:25:18,836 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:25:18,836 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 18:25:18,917 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:25:18,928 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:25:18,928 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 18:25:19,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 2916 states, 1656 states have (on average 1.2765700483091786) internal successors, (2114), 1726 states have internal predecessors, (2114), 1091 states have call successors, (1091), 168 states have call predecessors, (1091), 167 states have return successors, (1086), 1074 states have call predecessors, (1086), 1086 states have call successors, (1086) [2021-11-25 18:25:19,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-25 18:25:19,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:25:19,032 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:25:19,032 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:25:19,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:25:19,038 INFO L85 PathProgramCache]: Analyzing trace with hash 288822799, now seen corresponding path program 1 times [2021-11-25 18:25:19,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:25:19,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902081241] [2021-11-25 18:25:19,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:25:19,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:25:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:25:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-25 18:25:20,520 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:25:20,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902081241] [2021-11-25 18:25:20,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902081241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:25:20,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:25:20,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:25:20,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764281994] [2021-11-25 18:25:20,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:25:20,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:25:20,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:25:20,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:25:20,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:25:20,624 INFO L87 Difference]: Start difference. First operand has 2916 states, 1656 states have (on average 1.2765700483091786) internal successors, (2114), 1726 states have internal predecessors, (2114), 1091 states have call successors, (1091), 168 states have call predecessors, (1091), 167 states have return successors, (1086), 1074 states have call predecessors, (1086), 1086 states have call successors, (1086) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 18:25:22,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:25:30,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:25:30,995 INFO L93 Difference]: Finished difference Result 8626 states and 13064 transitions. [2021-11-25 18:25:30,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:25:30,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 137 [2021-11-25 18:25:31,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:25:31,089 INFO L225 Difference]: With dead ends: 8626 [2021-11-25 18:25:31,089 INFO L226 Difference]: Without dead ends: 5725 [2021-11-25 18:25:31,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:25:31,137 INFO L933 BasicCegarLoop]: 5034 mSDtfsCounter, 4172 mSDsluCounter, 4246 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4172 SdHoareTripleChecker+Valid, 8845 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:25:31,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4172 Valid, 8845 Invalid, 903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 899 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2021-11-25 18:25:31,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5725 states. [2021-11-25 18:25:31,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5725 to 5721. [2021-11-25 18:25:31,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5721 states, 3261 states have (on average 1.2744556884391292) internal successors, (4156), 3397 states have internal predecessors, (4156), 2126 states have call successors, (2126), 332 states have call predecessors, (2126), 331 states have return successors, (2123), 2099 states have call predecessors, (2123), 2123 states have call successors, (2123) [2021-11-25 18:25:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5721 states to 5721 states and 8405 transitions. [2021-11-25 18:25:31,816 INFO L78 Accepts]: Start accepts. Automaton has 5721 states and 8405 transitions. Word has length 137 [2021-11-25 18:25:31,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:25:31,820 INFO L470 AbstractCegarLoop]: Abstraction has 5721 states and 8405 transitions. [2021-11-25 18:25:31,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 18:25:31,822 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 8405 transitions. [2021-11-25 18:25:31,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-25 18:25:31,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:25:31,831 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:25:31,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:25:31,832 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:25:31,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:25:31,832 INFO L85 PathProgramCache]: Analyzing trace with hash -235814926, now seen corresponding path program 1 times [2021-11-25 18:25:31,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:25:31,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841567177] [2021-11-25 18:25:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:25:31,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:25:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:25:32,673 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-25 18:25:32,676 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:25:32,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841567177] [2021-11-25 18:25:32,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841567177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:25:32,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:25:32,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:25:32,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313930332] [2021-11-25 18:25:32,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:25:32,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:25:32,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:25:32,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:25:32,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:25:32,685 INFO L87 Difference]: Start difference. First operand 5721 states and 8405 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 18:25:34,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:25:43,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:25:43,165 INFO L93 Difference]: Finished difference Result 16943 states and 24925 transitions. [2021-11-25 18:25:43,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:25:43,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 142 [2021-11-25 18:25:43,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:25:43,296 INFO L225 Difference]: With dead ends: 16943 [2021-11-25 18:25:43,297 INFO L226 Difference]: Without dead ends: 11247 [2021-11-25 18:25:43,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:25:43,348 INFO L933 BasicCegarLoop]: 4885 mSDtfsCounter, 4108 mSDsluCounter, 4256 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 8705 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:25:43,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4108 Valid, 8705 Invalid, 889 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 885 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2021-11-25 18:25:43,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11247 states. [2021-11-25 18:25:44,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11247 to 11211. [2021-11-25 18:25:44,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11211 states, 6406 states have (on average 1.2736497034030596) internal successors, (8159), 6672 states have internal predecessors, (8159), 4143 states have call successors, (4143), 662 states have call predecessors, (4143), 659 states have return successors, (4202), 4080 states have call predecessors, (4202), 4140 states have call successors, (4202) [2021-11-25 18:25:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11211 states to 11211 states and 16504 transitions. [2021-11-25 18:25:44,575 INFO L78 Accepts]: Start accepts. Automaton has 11211 states and 16504 transitions. Word has length 142 [2021-11-25 18:25:44,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:25:44,577 INFO L470 AbstractCegarLoop]: Abstraction has 11211 states and 16504 transitions. [2021-11-25 18:25:44,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 18:25:44,579 INFO L276 IsEmpty]: Start isEmpty. Operand 11211 states and 16504 transitions. [2021-11-25 18:25:44,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-25 18:25:44,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:25:44,585 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:25:44,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:25:44,585 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:25:44,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:25:44,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1714960767, now seen corresponding path program 1 times [2021-11-25 18:25:44,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:25:44,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655836970] [2021-11-25 18:25:44,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:25:44,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:25:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:25:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-25 18:25:45,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:25:45,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655836970] [2021-11-25 18:25:45,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655836970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:25:45,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:25:45,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:25:45,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624676302] [2021-11-25 18:25:45,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:25:45,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:25:45,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:25:45,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:25:45,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:25:45,337 INFO L87 Difference]: Start difference. First operand 11211 states and 16504 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 18:25:47,452 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:25:55,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:25:55,560 INFO L93 Difference]: Finished difference Result 32183 states and 47238 transitions. [2021-11-25 18:25:55,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:25:55,562 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 146 [2021-11-25 18:25:55,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:25:55,752 INFO L225 Difference]: With dead ends: 32183 [2021-11-25 18:25:55,752 INFO L226 Difference]: Without dead ends: 20997 [2021-11-25 18:25:55,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:25:55,849 INFO L933 BasicCegarLoop]: 4762 mSDtfsCounter, 3692 mSDsluCounter, 4157 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3692 SdHoareTripleChecker+Valid, 8513 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:25:55,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3692 Valid, 8513 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 926 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2021-11-25 18:25:55,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20997 states. [2021-11-25 18:25:57,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20997 to 20957. [2021-11-25 18:25:57,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20957 states, 11980 states have (on average 1.267195325542571) internal successors, (15181), 12474 states have internal predecessors, (15181), 7693 states have call successors, (7693), 1286 states have call predecessors, (7693), 1281 states have return successors, (7822), 7578 states have call predecessors, (7822), 7690 states have call successors, (7822) [2021-11-25 18:25:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20957 states to 20957 states and 30696 transitions. [2021-11-25 18:25:57,375 INFO L78 Accepts]: Start accepts. Automaton has 20957 states and 30696 transitions. Word has length 146 [2021-11-25 18:25:57,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:25:57,376 INFO L470 AbstractCegarLoop]: Abstraction has 20957 states and 30696 transitions. [2021-11-25 18:25:57,376 INFO L471 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 18:25:57,376 INFO L276 IsEmpty]: Start isEmpty. Operand 20957 states and 30696 transitions. [2021-11-25 18:25:57,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-25 18:25:57,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:25:57,380 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:25:57,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:25:57,381 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:25:57,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:25:57,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1877446515, now seen corresponding path program 1 times [2021-11-25 18:25:57,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:25:57,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961327782] [2021-11-25 18:25:57,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:25:57,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:25:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:25:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-25 18:25:58,348 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:25:58,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961327782] [2021-11-25 18:25:58,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961327782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:25:58,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:25:58,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:25:58,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503894041] [2021-11-25 18:25:58,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:25:58,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:25:58,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:25:58,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:25:58,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:25:58,350 INFO L87 Difference]: Start difference. First operand 20957 states and 30696 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 18:26:00,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:26:07,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:26:07,792 INFO L93 Difference]: Finished difference Result 39136 states and 56916 transitions. [2021-11-25 18:26:07,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:26:07,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 151 [2021-11-25 18:26:07,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:26:07,909 INFO L225 Difference]: With dead ends: 39136 [2021-11-25 18:26:07,909 INFO L226 Difference]: Without dead ends: 18204 [2021-11-25 18:26:08,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:26:08,020 INFO L933 BasicCegarLoop]: 5086 mSDtfsCounter, 2448 mSDsluCounter, 4214 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2448 SdHoareTripleChecker+Valid, 8872 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:26:08,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2448 Valid, 8872 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1057 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2021-11-25 18:26:08,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18204 states. [2021-11-25 18:26:09,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18204 to 18169. [2021-11-25 18:26:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18169 states, 10492 states have (on average 1.2646778497903164) internal successors, (13269), 10929 states have internal predecessors, (13269), 6383 states have call successors, (6383), 1294 states have call predecessors, (6383), 1291 states have return successors, (6465), 6286 states have call predecessors, (6465), 6380 states have call successors, (6465) [2021-11-25 18:26:09,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18169 states to 18169 states and 26117 transitions. [2021-11-25 18:26:09,357 INFO L78 Accepts]: Start accepts. Automaton has 18169 states and 26117 transitions. Word has length 151 [2021-11-25 18:26:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:26:09,358 INFO L470 AbstractCegarLoop]: Abstraction has 18169 states and 26117 transitions. [2021-11-25 18:26:09,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 18:26:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 18169 states and 26117 transitions. [2021-11-25 18:26:09,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-25 18:26:09,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:26:09,361 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:26:09,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:26:09,362 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:26:09,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:26:09,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1449430356, now seen corresponding path program 1 times [2021-11-25 18:26:09,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:26:09,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938442193] [2021-11-25 18:26:09,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:26:09,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:26:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:26:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-25 18:26:10,063 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:26:10,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938442193] [2021-11-25 18:26:10,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938442193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:26:10,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:26:10,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:26:10,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229014619] [2021-11-25 18:26:10,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:26:10,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:26:10,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:26:10,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:26:10,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:26:10,066 INFO L87 Difference]: Start difference. First operand 18169 states and 26117 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:26:12,177 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:26:18,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:26:18,936 INFO L93 Difference]: Finished difference Result 48716 states and 70299 transitions. [2021-11-25 18:26:18,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:26:18,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 154 [2021-11-25 18:26:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:26:19,350 INFO L225 Difference]: With dead ends: 48716 [2021-11-25 18:26:19,350 INFO L226 Difference]: Without dead ends: 30572 [2021-11-25 18:26:19,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:26:19,428 INFO L933 BasicCegarLoop]: 5068 mSDtfsCounter, 4201 mSDsluCounter, 4205 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4201 SdHoareTripleChecker+Valid, 8842 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:26:19,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4201 Valid, 8842 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 901 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-11-25 18:26:19,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30572 states. [2021-11-25 18:26:21,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30572 to 30532. [2021-11-25 18:26:21,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30532 states, 17605 states have (on average 1.2648679352456689) internal successors, (22268), 18346 states have internal predecessors, (22268), 10849 states have call successors, (10849), 2084 states have call predecessors, (10849), 2075 states have return successors, (11020), 10658 states have call predecessors, (11020), 10846 states have call successors, (11020) [2021-11-25 18:26:21,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30532 states to 30532 states and 44137 transitions. [2021-11-25 18:26:21,385 INFO L78 Accepts]: Start accepts. Automaton has 30532 states and 44137 transitions. Word has length 154 [2021-11-25 18:26:21,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:26:21,386 INFO L470 AbstractCegarLoop]: Abstraction has 30532 states and 44137 transitions. [2021-11-25 18:26:21,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:26:21,387 INFO L276 IsEmpty]: Start isEmpty. Operand 30532 states and 44137 transitions. [2021-11-25 18:26:21,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-25 18:26:21,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:26:21,543 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:26:21,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:26:21,543 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:26:21,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:26:21,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1986518457, now seen corresponding path program 1 times [2021-11-25 18:26:21,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:26:21,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593445000] [2021-11-25 18:26:21,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:26:21,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:26:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:26:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2021-11-25 18:26:22,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:26:22,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593445000] [2021-11-25 18:26:22,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593445000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:26:22,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:26:22,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:26:22,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414595519] [2021-11-25 18:26:22,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:26:22,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:26:22,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:26:22,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:26:22,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:26:22,334 INFO L87 Difference]: Start difference. First operand 30532 states and 44137 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 18:26:24,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:26:37,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:26:37,293 INFO L93 Difference]: Finished difference Result 56215 states and 81229 transitions. [2021-11-25 18:26:37,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:26:37,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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 175 [2021-11-25 18:26:37,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:26:37,662 INFO L225 Difference]: With dead ends: 56215 [2021-11-25 18:26:37,662 INFO L226 Difference]: Without dead ends: 56213 [2021-11-25 18:26:37,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:26:37,692 INFO L933 BasicCegarLoop]: 4714 mSDtfsCounter, 4040 mSDsluCounter, 13880 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4058 SdHoareTripleChecker+Valid, 17297 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:26:37,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4058 Valid, 17297 Invalid, 1781 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1776 Invalid, 1 Unknown, 0 Unchecked, 13.4s Time] [2021-11-25 18:26:37,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56213 states. [2021-11-25 18:26:41,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56213 to 56177. [2021-11-25 18:26:41,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56177 states, 32434 states have (on average 1.2666337793673306) internal successors, (41082), 33918 states have internal predecessors, (41082), 19801 states have call successors, (19801), 4049 states have call predecessors, (19801), 3939 states have return successors, (20311), 19168 states have call predecessors, (20311), 19795 states have call successors, (20311) [2021-11-25 18:26:41,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56177 states to 56177 states and 81194 transitions. [2021-11-25 18:26:41,827 INFO L78 Accepts]: Start accepts. Automaton has 56177 states and 81194 transitions. Word has length 175 [2021-11-25 18:26:41,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:26:41,833 INFO L470 AbstractCegarLoop]: Abstraction has 56177 states and 81194 transitions. [2021-11-25 18:26:41,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 18:26:41,834 INFO L276 IsEmpty]: Start isEmpty. Operand 56177 states and 81194 transitions. [2021-11-25 18:26:41,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-25 18:26:41,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:26:41,838 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:26:41,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:26:41,839 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:26:41,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:26:41,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1616917179, now seen corresponding path program 1 times [2021-11-25 18:26:41,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:26:41,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368423815] [2021-11-25 18:26:41,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:26:41,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:26:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:26:42,876 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2021-11-25 18:26:42,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:26:42,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368423815] [2021-11-25 18:26:42,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368423815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:26:42,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:26:42,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:26:42,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123747170] [2021-11-25 18:26:42,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:26:42,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:26:42,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:26:42,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:26:42,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:26:42,879 INFO L87 Difference]: Start difference. First operand 56177 states and 81194 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 18:26:44,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:26:54,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:26:54,634 INFO L93 Difference]: Finished difference Result 56187 states and 81203 transitions. [2021-11-25 18:26:54,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:26:54,634 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 180 [2021-11-25 18:26:54,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:26:54,954 INFO L225 Difference]: With dead ends: 56187 [2021-11-25 18:26:54,954 INFO L226 Difference]: Without dead ends: 56185 [2021-11-25 18:26:54,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:26:54,990 INFO L933 BasicCegarLoop]: 3821 mSDtfsCounter, 4202 mSDsluCounter, 8498 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4219 SdHoareTripleChecker+Valid, 11437 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:26:54,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4219 Valid, 11437 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1349 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2021-11-25 18:26:55,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56185 states. [2021-11-25 18:26:57,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56185 to 56185. [2021-11-25 18:26:57,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56185 states, 32440 states have (on average 1.2665844636251542) internal successors, (41088), 33924 states have internal predecessors, (41088), 19801 states have call successors, (19801), 4051 states have call predecessors, (19801), 3941 states have return successors, (20311), 19168 states have call predecessors, (20311), 19795 states have call successors, (20311) [2021-11-25 18:26:58,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56185 states to 56185 states and 81200 transitions. [2021-11-25 18:26:58,208 INFO L78 Accepts]: Start accepts. Automaton has 56185 states and 81200 transitions. Word has length 180 [2021-11-25 18:26:58,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:26:58,211 INFO L470 AbstractCegarLoop]: Abstraction has 56185 states and 81200 transitions. [2021-11-25 18:26:58,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 18:26:58,211 INFO L276 IsEmpty]: Start isEmpty. Operand 56185 states and 81200 transitions. [2021-11-25 18:26:58,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-25 18:26:58,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:26:58,217 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 6, 6, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:26:58,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:26:58,218 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:26:58,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:26:58,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1054332205, now seen corresponding path program 1 times [2021-11-25 18:26:58,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:26:58,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460439088] [2021-11-25 18:26:58,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:26:58,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:26:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:26:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2021-11-25 18:26:59,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:26:59,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460439088] [2021-11-25 18:26:59,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460439088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:26:59,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:26:59,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:26:59,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115979199] [2021-11-25 18:26:59,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:26:59,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:26:59,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:26:59,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:26:59,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:26:59,335 INFO L87 Difference]: Start difference. First operand 56185 states and 81200 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 18:27:01,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:27:12,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:12,703 INFO L93 Difference]: Finished difference Result 56195 states and 81209 transitions. [2021-11-25 18:27:12,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:27:12,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 194 [2021-11-25 18:27:12,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:12,945 INFO L225 Difference]: With dead ends: 56195 [2021-11-25 18:27:12,945 INFO L226 Difference]: Without dead ends: 56193 [2021-11-25 18:27:12,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:27:12,973 INFO L933 BasicCegarLoop]: 3821 mSDtfsCounter, 4198 mSDsluCounter, 8498 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4214 SdHoareTripleChecker+Valid, 11437 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:12,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4214 Valid, 11437 Invalid, 1351 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1349 Invalid, 1 Unknown, 0 Unchecked, 11.5s Time] [2021-11-25 18:27:13,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56193 states. [2021-11-25 18:27:15,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56193 to 56193. [2021-11-25 18:27:15,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56193 states, 32446 states have (on average 1.2665351661221722) internal successors, (41094), 33930 states have internal predecessors, (41094), 19801 states have call successors, (19801), 4053 states have call predecessors, (19801), 3943 states have return successors, (20311), 19168 states have call predecessors, (20311), 19795 states have call successors, (20311) [2021-11-25 18:27:16,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56193 states to 56193 states and 81206 transitions. [2021-11-25 18:27:16,089 INFO L78 Accepts]: Start accepts. Automaton has 56193 states and 81206 transitions. Word has length 194 [2021-11-25 18:27:16,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:16,090 INFO L470 AbstractCegarLoop]: Abstraction has 56193 states and 81206 transitions. [2021-11-25 18:27:16,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 18:27:16,090 INFO L276 IsEmpty]: Start isEmpty. Operand 56193 states and 81206 transitions. [2021-11-25 18:27:16,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-25 18:27:16,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:16,096 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 6, 6, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:27:16,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:27:16,096 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:27:16,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:16,097 INFO L85 PathProgramCache]: Analyzing trace with hash 129928657, now seen corresponding path program 1 times [2021-11-25 18:27:16,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:16,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466225200] [2021-11-25 18:27:16,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:16,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:17,268 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2021-11-25 18:27:17,269 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:17,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466225200] [2021-11-25 18:27:17,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466225200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:27:17,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:27:17,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:27:17,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428458589] [2021-11-25 18:27:17,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:27:17,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:27:17,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:17,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:27:17,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:27:17,271 INFO L87 Difference]: Start difference. First operand 56193 states and 81206 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 18:27:19,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:27:30,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:30,510 INFO L93 Difference]: Finished difference Result 56203 states and 81215 transitions. [2021-11-25 18:27:30,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:27:30,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 199 [2021-11-25 18:27:30,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:30,900 INFO L225 Difference]: With dead ends: 56203 [2021-11-25 18:27:30,900 INFO L226 Difference]: Without dead ends: 56201 [2021-11-25 18:27:30,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:27:30,922 INFO L933 BasicCegarLoop]: 3821 mSDtfsCounter, 4198 mSDsluCounter, 8498 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4213 SdHoareTripleChecker+Valid, 11437 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:30,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4213 Valid, 11437 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1349 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2021-11-25 18:27:30,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56201 states. [2021-11-25 18:27:33,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56201 to 56201. [2021-11-25 18:27:33,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56201 states, 32452 states have (on average 1.2664858868482682) internal successors, (41100), 33936 states have internal predecessors, (41100), 19801 states have call successors, (19801), 4055 states have call predecessors, (19801), 3945 states have return successors, (20311), 19168 states have call predecessors, (20311), 19795 states have call successors, (20311) [2021-11-25 18:27:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56201 states to 56201 states and 81212 transitions. [2021-11-25 18:27:33,895 INFO L78 Accepts]: Start accepts. Automaton has 56201 states and 81212 transitions. Word has length 199 [2021-11-25 18:27:33,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:33,897 INFO L470 AbstractCegarLoop]: Abstraction has 56201 states and 81212 transitions. [2021-11-25 18:27:33,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 18:27:33,897 INFO L276 IsEmpty]: Start isEmpty. Operand 56201 states and 81212 transitions. [2021-11-25 18:27:33,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-25 18:27:33,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:33,903 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:27:33,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:27:33,904 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:27:33,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:33,904 INFO L85 PathProgramCache]: Analyzing trace with hash 160818506, now seen corresponding path program 1 times [2021-11-25 18:27:33,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:33,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430911797] [2021-11-25 18:27:33,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:33,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:35,011 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2021-11-25 18:27:35,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:35,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430911797] [2021-11-25 18:27:35,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430911797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:27:35,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:27:35,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:27:35,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656578503] [2021-11-25 18:27:35,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:27:35,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:27:35,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:35,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:27:35,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:27:35,014 INFO L87 Difference]: Start difference. First operand 56201 states and 81212 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 18:27:37,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:27:49,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:49,659 INFO L93 Difference]: Finished difference Result 130599 states and 188316 transitions. [2021-11-25 18:27:49,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:27:49,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 194 [2021-11-25 18:27:49,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:50,005 INFO L225 Difference]: With dead ends: 130599 [2021-11-25 18:27:50,005 INFO L226 Difference]: Without dead ends: 74461 [2021-11-25 18:27:50,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:27:50,288 INFO L933 BasicCegarLoop]: 5918 mSDtfsCounter, 2448 mSDsluCounter, 4207 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2448 SdHoareTripleChecker+Valid, 9697 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:50,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2448 Valid, 9697 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1229 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2021-11-25 18:27:50,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74461 states. [2021-11-25 18:27:54,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74461 to 74361. [2021-11-25 18:27:54,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74361 states, 43100 states have (on average 1.2664965197215776) internal successors, (54586), 45056 states have internal predecessors, (54586), 25819 states have call successors, (25819), 5581 states have call predecessors, (25819), 5439 states have return successors, (26413), 24994 states have call predecessors, (26413), 25813 states have call successors, (26413) [2021-11-25 18:27:54,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74361 states to 74361 states and 106818 transitions. [2021-11-25 18:27:54,590 INFO L78 Accepts]: Start accepts. Automaton has 74361 states and 106818 transitions. Word has length 194 [2021-11-25 18:27:54,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:54,591 INFO L470 AbstractCegarLoop]: Abstraction has 74361 states and 106818 transitions. [2021-11-25 18:27:54,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 18:27:54,591 INFO L276 IsEmpty]: Start isEmpty. Operand 74361 states and 106818 transitions. [2021-11-25 18:27:54,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-25 18:27:54,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:54,595 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:27:54,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:27:54,596 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:27:54,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:54,596 INFO L85 PathProgramCache]: Analyzing trace with hash 740908089, now seen corresponding path program 1 times [2021-11-25 18:27:54,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:54,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030016108] [2021-11-25 18:27:54,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:54,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2021-11-25 18:27:55,737 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:55,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030016108] [2021-11-25 18:27:55,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030016108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:27:55,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:27:55,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:27:55,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504167705] [2021-11-25 18:27:55,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:27:55,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:27:55,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:27:55,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:27:55,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:27:55,740 INFO L87 Difference]: Start difference. First operand 74361 states and 106818 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 18:27:57,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:28:08,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:28:08,848 INFO L93 Difference]: Finished difference Result 74371 states and 106827 transitions. [2021-11-25 18:28:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:28:08,849 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 195 [2021-11-25 18:28:08,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:28:09,325 INFO L225 Difference]: With dead ends: 74371 [2021-11-25 18:28:09,325 INFO L226 Difference]: Without dead ends: 74369 [2021-11-25 18:28:09,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:28:09,349 INFO L933 BasicCegarLoop]: 3821 mSDtfsCounter, 4202 mSDsluCounter, 8498 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4216 SdHoareTripleChecker+Valid, 11437 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:28:09,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4216 Valid, 11437 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1349 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2021-11-25 18:28:09,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74369 states. [2021-11-25 18:28:12,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74369 to 74369. [2021-11-25 18:28:12,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74369 states, 43106 states have (on average 1.2664594256020043) internal successors, (54592), 45062 states have internal predecessors, (54592), 25819 states have call successors, (25819), 5583 states have call predecessors, (25819), 5441 states have return successors, (26413), 24994 states have call predecessors, (26413), 25813 states have call successors, (26413) [2021-11-25 18:28:13,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74369 states to 74369 states and 106824 transitions. [2021-11-25 18:28:13,204 INFO L78 Accepts]: Start accepts. Automaton has 74369 states and 106824 transitions. Word has length 195 [2021-11-25 18:28:13,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:28:13,205 INFO L470 AbstractCegarLoop]: Abstraction has 74369 states and 106824 transitions. [2021-11-25 18:28:13,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 18:28:13,205 INFO L276 IsEmpty]: Start isEmpty. Operand 74369 states and 106824 transitions. [2021-11-25 18:28:13,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-25 18:28:13,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:28:13,208 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 6, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:28:13,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:28:13,209 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:28:13,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:28:13,210 INFO L85 PathProgramCache]: Analyzing trace with hash 668911377, now seen corresponding path program 1 times [2021-11-25 18:28:13,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:28:13,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638503171] [2021-11-25 18:28:13,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:28:13,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:28:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:28:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2021-11-25 18:28:13,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:28:13,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638503171] [2021-11-25 18:28:13,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638503171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:28:13,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:28:13,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:28:13,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179617959] [2021-11-25 18:28:13,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:28:13,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:28:13,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:28:13,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:28:13,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:28:13,950 INFO L87 Difference]: Start difference. First operand 74369 states and 106824 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 18:28:16,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []