./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.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_bf9f1416-13be-42fb-b3bf-248204612c45/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9f1416-13be-42fb-b3bf-248204612c45/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_bf9f1416-13be-42fb-b3bf-248204612c45/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9f1416-13be-42fb-b3bf-248204612c45/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9f1416-13be-42fb-b3bf-248204612c45/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_bf9f1416-13be-42fb-b3bf-248204612c45/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 08c4ab5181b7abd6700c38bd6f4a3ecc0debf94ce89805012c81d15880051c78 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:26:40,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:26:40,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:26:40,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:26:40,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:26:40,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:26:40,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:26:40,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:26:40,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:26:40,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:26:40,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:26:40,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:26:40,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:26:40,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:26:40,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:26:40,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:26:40,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:26:40,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:26:40,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:26:40,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:26:40,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:26:40,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:26:40,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:26:40,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:26:40,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:26:40,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:26:40,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:26:40,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:26:40,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:26:40,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:26:40,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:26:40,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:26:40,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:26:40,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:26:40,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:26:40,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:26:40,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:26:40,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:26:40,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:26:40,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:26:40,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:26:40,484 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9f1416-13be-42fb-b3bf-248204612c45/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:26:40,540 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:26:40,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:26:40,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:26:40,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:26:40,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:26:40,552 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:26:40,552 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:26:40,552 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:26:40,553 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:26:40,553 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:26:40,554 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:26:40,554 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:26:40,555 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:26:40,555 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:26:40,555 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:26:40,556 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:26:40,556 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:26:40,556 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:26:40,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:26:40,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:26:40,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:26:40,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:26:40,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:26:40,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:26:40,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:26:40,559 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:26:40,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:26:40,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:26:40,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:26:40,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:26:40,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:26:40,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:26:40,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:26:40,563 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:26:40,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:26:40,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:26:40,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:26:40,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:26:40,564 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_bf9f1416-13be-42fb-b3bf-248204612c45/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9f1416-13be-42fb-b3bf-248204612c45/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08c4ab5181b7abd6700c38bd6f4a3ecc0debf94ce89805012c81d15880051c78 [2021-11-25 19:26:40,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:26:40,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:26:40,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:26:40,935 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:26:40,936 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:26:40,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9f1416-13be-42fb-b3bf-248204612c45/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i [2021-11-25 19:26:41,043 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9f1416-13be-42fb-b3bf-248204612c45/bin/utaipan-eEHZpOm5b7/data/7a30e570c/1b59df4fc466414a9550dba787fe2af3/FLAGf531fd4ff [2021-11-25 19:26:42,330 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:26:42,331 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9f1416-13be-42fb-b3bf-248204612c45/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i [2021-11-25 19:26:42,440 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9f1416-13be-42fb-b3bf-248204612c45/bin/utaipan-eEHZpOm5b7/data/7a30e570c/1b59df4fc466414a9550dba787fe2af3/FLAGf531fd4ff [2021-11-25 19:26:42,465 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9f1416-13be-42fb-b3bf-248204612c45/bin/utaipan-eEHZpOm5b7/data/7a30e570c/1b59df4fc466414a9550dba787fe2af3 [2021-11-25 19:26:42,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:26:42,471 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:26:42,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:26:42,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:26:42,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:26:42,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:26:42" (1/1) ... [2021-11-25 19:26:42,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd8d5d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:42, skipping insertion in model container [2021-11-25 19:26:42,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:26:42" (1/1) ... [2021-11-25 19:26:42,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:26:42,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:26:48,978 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_bf9f1416-13be-42fb-b3bf-248204612c45/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[445714,445727] [2021-11-25 19:26:48,981 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_bf9f1416-13be-42fb-b3bf-248204612c45/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[445883,445896] [2021-11-25 19:26:48,981 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_bf9f1416-13be-42fb-b3bf-248204612c45/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446050,446063] [2021-11-25 19:26:48,982 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_bf9f1416-13be-42fb-b3bf-248204612c45/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446218,446231] [2021-11-25 19:26:49,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:26:49,114 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:26:49,697 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_bf9f1416-13be-42fb-b3bf-248204612c45/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[445714,445727] [2021-11-25 19:26:49,698 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_bf9f1416-13be-42fb-b3bf-248204612c45/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[445883,445896] [2021-11-25 19:26:49,698 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_bf9f1416-13be-42fb-b3bf-248204612c45/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446050,446063] [2021-11-25 19:26:49,699 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_bf9f1416-13be-42fb-b3bf-248204612c45/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446218,446231] [2021-11-25 19:26:49,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:26:50,165 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:26:50,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:50 WrapperNode [2021-11-25 19:26:50,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:26:50,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:26:50,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:26:50,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:26:50,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:50" (1/1) ... [2021-11-25 19:26:50,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:50" (1/1) ... [2021-11-25 19:26:50,713 INFO L137 Inliner]: procedures = 663, calls = 4677, calls flagged for inlining = 358, calls inlined = 345, statements flattened = 10344 [2021-11-25 19:26:50,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:26:50,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:26:50,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:26:50,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:26:50,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:50" (1/1) ... [2021-11-25 19:26:50,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:50" (1/1) ... [2021-11-25 19:26:50,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:50" (1/1) ... [2021-11-25 19:26:50,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:50" (1/1) ... [2021-11-25 19:26:51,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:50" (1/1) ... [2021-11-25 19:26:51,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:50" (1/1) ... [2021-11-25 19:26:51,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:50" (1/1) ... [2021-11-25 19:26:51,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:26:51,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:26:51,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:26:51,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:26:51,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:50" (1/1) ... [2021-11-25 19:26:51,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:26:51,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9f1416-13be-42fb-b3bf-248204612c45/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:51,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9f1416-13be-42fb-b3bf-248204612c45/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:26:51,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9f1416-13be-42fb-b3bf-248204612c45/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:26:51,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 19:26:51,525 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 19:26:51,525 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-25 19:26:51,526 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-25 19:26:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure hw_del_addr [2021-11-25 19:26:51,526 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_del_addr [2021-11-25 19:26:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 19:26:51,526 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 19:26:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure hw_cfg_wol [2021-11-25 19:26:51,526 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_cfg_wol [2021-11-25 19:26:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:26:51,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:26:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2021-11-25 19:26:51,527 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2021-11-25 19:26:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_init [2021-11-25 19:26:51,527 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_init [2021-11-25 19:26:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure hw_ack_intr [2021-11-25 19:26:51,527 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_ack_intr [2021-11-25 19:26:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_tx_timeout [2021-11-25 19:26:51,527 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_tx_timeout [2021-11-25 19:26:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure bridge_change [2021-11-25 19:26:51,528 INFO L138 BoogieDeclarations]: Found implementation of procedure bridge_change [2021-11-25 19:26:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:26:51,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:26:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure set_flow_ctrl [2021-11-25 19:26:51,528 INFO L138 BoogieDeclarations]: Found implementation of procedure set_flow_ctrl [2021-11-25 19:26:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 19:26:51,528 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 19:26:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pci_device_driver_exit_14_2 [2021-11-25 19:26:51,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pci_device_driver_exit_14_2 [2021-11-25 19:26:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-11-25 19:26:51,529 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-11-25 19:26:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure set_tx_len [2021-11-25 19:26:51,529 INFO L138 BoogieDeclarations]: Found implementation of procedure set_tx_len [2021-11-25 19:26:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure ksz_check_desc_num [2021-11-25 19:26:51,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ksz_check_desc_num [2021-11-25 19:26:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 19:26:51,529 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 19:26:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 19:26:51,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 19:26:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 19:26:51,530 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 19:26:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 19:26:51,530 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 19:26:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure set_media_state [2021-11-25 19:26:51,530 INFO L138 BoogieDeclarations]: Found implementation of procedure set_media_state [2021-11-25 19:26:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 19:26:51,530 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 19:26:51,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 19:26:51,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 19:26:51,531 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 19:26:51,531 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 19:26:51,531 INFO L130 BoogieDeclarations]: Found specification of procedure hw_ena_intr [2021-11-25 19:26:51,531 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_ena_intr [2021-11-25 19:26:51,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:26:51,531 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 19:26:51,531 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 19:26:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-11-25 19:26:51,532 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-11-25 19:26:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-25 19:26:51,532 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-25 19:26:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure port_cfg [2021-11-25 19:26:51,532 INFO L138 BoogieDeclarations]: Found implementation of procedure port_cfg [2021-11-25 19:26:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure state_gpio [2021-11-25 19:26:51,532 INFO L138 BoogieDeclarations]: Found implementation of procedure state_gpio [2021-11-25 19:26:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure hw_dis_intr [2021-11-25 19:26:51,533 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_dis_intr [2021-11-25 19:26:51,533 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_read [2021-11-25 19:26:51,533 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_read [2021-11-25 19:26:51,533 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 19:26:51,533 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 19:26:51,536 INFO L130 BoogieDeclarations]: Found specification of procedure pcidev_resume [2021-11-25 19:26:51,536 INFO L138 BoogieDeclarations]: Found implementation of procedure pcidev_resume [2021-11-25 19:26:51,537 INFO L130 BoogieDeclarations]: Found specification of procedure hw_dis_intr_bit [2021-11-25 19:26:51,537 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_dis_intr_bit [2021-11-25 19:26:51,537 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_eeprom_len [2021-11-25 19:26:51,537 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_eeprom_len [2021-11-25 19:26:51,538 INFO L130 BoogieDeclarations]: Found specification of procedure ksz_free_buffers [2021-11-25 19:26:51,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ksz_free_buffers [2021-11-25 19:26:51,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:26:51,539 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_clk [2021-11-25 19:26:51,539 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_clk [2021-11-25 19:26:51,539 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 19:26:51,540 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 19:26:51,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:26:51,541 INFO L130 BoogieDeclarations]: Found specification of procedure hw_reset [2021-11-25 19:26:51,541 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_reset [2021-11-25 19:26:51,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 19:26:51,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 19:26:51,542 INFO L130 BoogieDeclarations]: Found specification of procedure rx_proc [2021-11-25 19:26:51,542 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_proc [2021-11-25 19:26:51,542 INFO L130 BoogieDeclarations]: Found specification of procedure release_desc [2021-11-25 19:26:51,543 INFO L138 BoogieDeclarations]: Found implementation of procedure release_desc [2021-11-25 19:26:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:26:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 19:26:51,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 19:26:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure hw_resume_rx [2021-11-25 19:26:51,543 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_resume_rx [2021-11-25 19:26:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:26:51,544 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:26:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 19:26:51,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 19:26:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_netpoll [2021-11-25 19:26:51,545 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_netpoll [2021-11-25 19:26:51,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 19:26:51,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 19:26:51,550 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-25 19:26:51,551 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-25 19:26:51,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 19:26:51,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 19:26:51,552 INFO L130 BoogieDeclarations]: Found specification of procedure hw_ena_add_addr [2021-11-25 19:26:51,552 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_ena_add_addr [2021-11-25 19:26:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2021-11-25 19:26:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2021-11-25 19:26:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure hw_set_grp_addr [2021-11-25 19:26:51,558 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_set_grp_addr [2021-11-25 19:26:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 19:26:51,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 19:26:51,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:26:51,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 19:26:51,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 19:26:51,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 19:26:51,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 19:26:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:26:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure sw_w_sta_mac_table [2021-11-25 19:26:51,560 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_w_sta_mac_table [2021-11-25 19:26:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2021-11-25 19:26:51,560 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2021-11-25 19:26:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 19:26:51,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 19:26:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 19:26:51,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 19:26:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:26:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:26:51,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:26:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure hw_stop_rx [2021-11-25 19:26:51,562 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_stop_rx [2021-11-25 19:26:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure hw_set_intr [2021-11-25 19:26:51,562 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_set_intr [2021-11-25 19:26:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:26:51,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:26:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-25 19:26:51,563 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-25 19:26:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure ksz_init_rx_buffers [2021-11-25 19:26:51,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ksz_init_rx_buffers [2021-11-25 19:26:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure ksz_free_mem [2021-11-25 19:26:51,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ksz_free_mem [2021-11-25 19:26:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 19:26:51,564 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 19:26:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure hw_w_phy [2021-11-25 19:26:51,564 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_w_phy [2021-11-25 19:26:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 19:26:51,564 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 19:26:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-11-25 19:26:51,565 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-11-25 19:26:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-11-25 19:26:51,565 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-11-25 19:26:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_set_rx_mode [2021-11-25 19:26:51,565 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_set_rx_mode [2021-11-25 19:26:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-25 19:26:51,566 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-25 19:26:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-25 19:26:51,566 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-25 19:26:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:26:51,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:26:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure transmit_cleanup [2021-11-25 19:26:51,567 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit_cleanup [2021-11-25 19:26:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure hw_r_phy [2021-11-25 19:26:51,567 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_r_phy [2021-11-25 19:26:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure hw_set_addr [2021-11-25 19:26:51,568 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_set_addr [2021-11-25 19:26:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:26:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:26:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:26:51,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:26:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure get_tx_pkt [2021-11-25 19:26:51,570 INFO L138 BoogieDeclarations]: Found implementation of procedure get_tx_pkt [2021-11-25 19:26:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2021-11-25 19:26:51,570 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2021-11-25 19:26:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure port_get_link_speed [2021-11-25 19:26:51,570 INFO L138 BoogieDeclarations]: Found implementation of procedure port_get_link_speed [2021-11-25 19:26:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:26:51,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:26:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure port_r16 [2021-11-25 19:26:51,572 INFO L138 BoogieDeclarations]: Found implementation of procedure port_r16 [2021-11-25 19:26:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_hwlock_of_dev_info [2021-11-25 19:26:51,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_hwlock_of_dev_info [2021-11-25 19:26:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure sw_cfg_port_base_vlan [2021-11-25 19:26:51,572 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_cfg_port_base_vlan [2021-11-25 19:26:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure drop_gpio [2021-11-25 19:26:51,573 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_gpio [2021-11-25 19:26:51,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 19:26:51,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 19:26:51,573 INFO L130 BoogieDeclarations]: Found specification of procedure hw_set_desc_base [2021-11-25 19:26:51,573 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_set_desc_base [2021-11-25 19:26:51,573 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 19:26:51,574 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 19:26:51,574 INFO L130 BoogieDeclarations]: Found specification of procedure hw_block_intr [2021-11-25 19:26:51,575 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_block_intr [2021-11-25 19:26:51,575 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 19:26:51,575 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 19:26:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2021-11-25 19:26:51,576 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2021-11-25 19:26:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_network_header [2021-11-25 19:26:51,576 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_network_header [2021-11-25 19:26:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure ksz_init_timer [2021-11-25 19:26:51,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ksz_init_timer [2021-11-25 19:26:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure hw_reset_pkts [2021-11-25 19:26:51,577 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_reset_pkts [2021-11-25 19:26:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:26:51,577 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:26:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure hw_disable [2021-11-25 19:26:51,578 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_disable [2021-11-25 19:26:51,578 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 19:26:51,578 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 19:26:51,578 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-25 19:26:51,578 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-25 19:26:51,578 INFO L130 BoogieDeclarations]: Found specification of procedure get_mac_addr [2021-11-25 19:26:51,578 INFO L138 BoogieDeclarations]: Found implementation of procedure get_mac_addr [2021-11-25 19:26:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure hw_restore_intr [2021-11-25 19:26:51,579 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_restore_intr [2021-11-25 19:26:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 19:26:51,579 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 19:26:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:26:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 19:26:51,580 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 19:26:51,580 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 19:26:51,580 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 19:26:51,580 INFO L130 BoogieDeclarations]: Found specification of procedure hw_start_rx [2021-11-25 19:26:51,580 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_start_rx [2021-11-25 19:26:51,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:26:51,581 INFO L130 BoogieDeclarations]: Found specification of procedure port_cfg_broad_storm [2021-11-25 19:26:51,582 INFO L138 BoogieDeclarations]: Found implementation of procedure port_cfg_broad_storm [2021-11-25 19:26:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-25 19:26:51,587 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-25 19:26:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure hw_turn_on_intr [2021-11-25 19:26:51,587 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_turn_on_intr [2021-11-25 19:26:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-25 19:26:51,587 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-25 19:26:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure sw_chk [2021-11-25 19:26:51,588 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_chk [2021-11-25 19:26:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:26:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure hw_set_wol_frame [2021-11-25 19:26:51,593 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_set_wol_frame [2021-11-25 19:26:51,593 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 19:26:51,593 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 19:26:51,593 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 19:26:51,593 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 19:26:51,594 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 19:26:51,594 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 19:26:51,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 19:26:51,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 19:26:51,594 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 19:26:51,594 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 19:26:51,594 INFO L130 BoogieDeclarations]: Found specification of procedure port_r_mib_pkt [2021-11-25 19:26:51,595 INFO L138 BoogieDeclarations]: Found implementation of procedure port_r_mib_pkt [2021-11-25 19:26:51,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 19:26:51,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 19:26:51,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_63 [2021-11-25 19:26:51,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_63 [2021-11-25 19:26:51,595 INFO L130 BoogieDeclarations]: Found specification of procedure sw_cfg [2021-11-25 19:26:51,596 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_cfg [2021-11-25 19:26:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2021-11-25 19:26:51,596 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2021-11-25 19:26:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_hwlock_of_dev_info [2021-11-25 19:26:51,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_hwlock_of_dev_info [2021-11-25 19:26:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure ksz_update_timer [2021-11-25 19:26:51,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ksz_update_timer [2021-11-25 19:26:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 19:26:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 19:26:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_free [2021-11-25 19:26:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_free [2021-11-25 19:26:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure ksz_stop_timer [2021-11-25 19:26:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ksz_stop_timer [2021-11-25 19:26:51,598 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 19:26:51,598 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 19:26:51,598 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_intr [2021-11-25 19:26:51,598 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_intr [2021-11-25 19:26:51,598 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-25 19:26:51,598 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-25 19:26:51,598 INFO L130 BoogieDeclarations]: Found specification of procedure hw_add_addr [2021-11-25 19:26:51,599 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_add_addr [2021-11-25 19:26:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure port_r_mib_cnt [2021-11-25 19:26:51,599 INFO L138 BoogieDeclarations]: Found implementation of procedure port_r_mib_cnt [2021-11-25 19:26:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma_buf [2021-11-25 19:26:51,599 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma_buf [2021-11-25 19:26:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-25 19:26:51,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-25 19:26:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 19:26:51,600 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 19:26:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_72 [2021-11-25 19:26:51,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_72 [2021-11-25 19:26:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:26:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure hw_set_multicast [2021-11-25 19:26:51,601 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_set_multicast [2021-11-25 19:26:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:26:51,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:26:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_regs_len [2021-11-25 19:26:51,601 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_regs_len [2021-11-25 19:26:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure hw_clr_multicast [2021-11-25 19:26:51,601 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_clr_multicast [2021-11-25 19:26:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure port_set_link_speed [2021-11-25 19:26:51,602 INFO L138 BoogieDeclarations]: Found implementation of procedure port_set_link_speed [2021-11-25 19:26:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure raise_gpio [2021-11-25 19:26:51,602 INFO L138 BoogieDeclarations]: Found implementation of procedure raise_gpio [2021-11-25 19:26:51,602 INFO L130 BoogieDeclarations]: Found specification of procedure port_w16 [2021-11-25 19:26:51,602 INFO L138 BoogieDeclarations]: Found implementation of procedure port_w16 [2021-11-25 19:26:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure empty_addr [2021-11-25 19:26:51,603 INFO L138 BoogieDeclarations]: Found implementation of procedure empty_addr [2021-11-25 19:26:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 19:26:51,603 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 19:26:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure mib_read_work [2021-11-25 19:26:51,603 INFO L138 BoogieDeclarations]: Found implementation of procedure mib_read_work [2021-11-25 19:26:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure hw_enable_wol [2021-11-25 19:26:51,604 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_enable_wol [2021-11-25 19:26:51,604 INFO L130 BoogieDeclarations]: Found specification of procedure port_set_stp_state [2021-11-25 19:26:51,604 INFO L138 BoogieDeclarations]: Found implementation of procedure port_set_stp_state [2021-11-25 19:26:51,604 INFO L130 BoogieDeclarations]: Found specification of procedure hw_clr_wol_pme_status [2021-11-25 19:26:51,604 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_clr_wol_pme_status [2021-11-25 19:26:51,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_64 [2021-11-25 19:26:51,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_64 [2021-11-25 19:26:51,605 INFO L130 BoogieDeclarations]: Found specification of procedure ksz_start_timer [2021-11-25 19:26:51,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ksz_start_timer [2021-11-25 19:26:51,605 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2021-11-25 19:26:51,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2021-11-25 19:26:51,605 INFO L130 BoogieDeclarations]: Found specification of procedure copy_old_skb [2021-11-25 19:26:51,605 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_old_skb [2021-11-25 19:26:51,606 INFO L130 BoogieDeclarations]: Found specification of procedure hw_cfg_wol_pme [2021-11-25 19:26:51,606 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_cfg_wol_pme [2021-11-25 19:26:51,606 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_buf [2021-11-25 19:26:51,606 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_buf [2021-11-25 19:26:51,606 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_network_header [2021-11-25 19:26:51,606 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_network_header [2021-11-25 19:26:51,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 19:26:51,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 19:26:51,607 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 19:26:51,607 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 19:26:51,607 INFO L130 BoogieDeclarations]: Found specification of procedure pcidev_exit [2021-11-25 19:26:51,607 INFO L138 BoogieDeclarations]: Found implementation of procedure pcidev_exit [2021-11-25 19:26:51,607 INFO L130 BoogieDeclarations]: Found specification of procedure hw_enable [2021-11-25 19:26:51,608 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_enable [2021-11-25 19:26:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure ksz_alloc_soft_desc [2021-11-25 19:26:51,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ksz_alloc_soft_desc [2021-11-25 19:26:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-25 19:26:51,608 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-25 19:26:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 19:26:51,609 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 19:26:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure sw_cfg_broad_storm [2021-11-25 19:26:51,609 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_cfg_broad_storm [2021-11-25 19:26:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:26:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 19:26:51,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 19:26:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure port_set_power_saving [2021-11-25 19:26:51,610 INFO L138 BoogieDeclarations]: Found implementation of procedure port_set_power_saving [2021-11-25 19:26:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2021-11-25 19:26:51,610 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2021-11-25 19:26:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure spi_reg [2021-11-25 19:26:51,610 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_reg [2021-11-25 19:26:52,944 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:26:52,950 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:26:57,403 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:27:16,494 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 19:27:16,699 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:27:19,755 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:27:19,756 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-25 19:27:19,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:27:19 BoogieIcfgContainer [2021-11-25 19:27:19,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:27:19,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:27:19,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:27:19,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:27:19,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:26:42" (1/3) ... [2021-11-25 19:27:19,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475e8c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:27:19, skipping insertion in model container [2021-11-25 19:27:19,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:50" (2/3) ... [2021-11-25 19:27:19,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475e8c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:27:19, skipping insertion in model container [2021-11-25 19:27:19,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:27:19" (3/3) ... [2021-11-25 19:27:19,778 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i [2021-11-25 19:27:19,785 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:27:19,785 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 19:27:19,878 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:27:19,888 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 19:27:19,889 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 19:27:19,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 2327 states, 1391 states have (on average 1.3156002875629045) internal successors, (1830), 1458 states have internal predecessors, (1830), 767 states have call successors, (767), 171 states have call predecessors, (767), 170 states have return successors, (761), 748 states have call predecessors, (761), 761 states have call successors, (761) [2021-11-25 19:27:20,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-25 19:27:20,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:20,027 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:20,028 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 19:27:20,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:20,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1215926308, now seen corresponding path program 1 times [2021-11-25 19:27:20,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:20,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472840775] [2021-11-25 19:27:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:20,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:21,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-25 19:27:21,264 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:21,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472840775] [2021-11-25 19:27:21,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472840775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:27:21,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:27:21,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:27:21,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645396432] [2021-11-25 19:27:21,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:27:21,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:27:21,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:21,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:27:21,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:27:21,340 INFO L87 Difference]: Start difference. First operand has 2327 states, 1391 states have (on average 1.3156002875629045) internal successors, (1830), 1458 states have internal predecessors, (1830), 767 states have call successors, (767), 171 states have call predecessors, (767), 170 states have return successors, (761), 748 states have call predecessors, (761), 761 states have call successors, (761) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-25 19:27:25,452 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:27:33,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:27:35,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:35,870 INFO L93 Difference]: Finished difference Result 6800 states and 9895 transitions. [2021-11-25 19:27:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:27:35,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 211 [2021-11-25 19:27:35,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:35,951 INFO L225 Difference]: With dead ends: 6800 [2021-11-25 19:27:35,952 INFO L226 Difference]: Without dead ends: 4502 [2021-11-25 19:27:35,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:27:35,979 INFO L933 BasicCegarLoop]: 3514 mSDtfsCounter, 3176 mSDsluCounter, 3281 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3182 SdHoareTripleChecker+Valid, 6284 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:35,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3182 Valid, 6284 Invalid, 1070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1061 Invalid, 2 Unknown, 0 Unchecked, 14.0s Time] [2021-11-25 19:27:36,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4502 states. [2021-11-25 19:27:36,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4502 to 4497. [2021-11-25 19:27:36,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4497 states, 2698 states have (on average 1.3139362490733877) internal successors, (3545), 2827 states have internal predecessors, (3545), 1461 states have call successors, (1461), 336 states have call predecessors, (1461), 335 states have return successors, (1460), 1431 states have call predecessors, (1460), 1457 states have call successors, (1460) [2021-11-25 19:27:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 6466 transitions. [2021-11-25 19:27:36,435 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 6466 transitions. Word has length 211 [2021-11-25 19:27:36,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:36,438 INFO L470 AbstractCegarLoop]: Abstraction has 4497 states and 6466 transitions. [2021-11-25 19:27:36,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-25 19:27:36,439 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 6466 transitions. [2021-11-25 19:27:36,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-25 19:27:36,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:36,446 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:36,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:27:36,446 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 19:27:36,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:36,448 INFO L85 PathProgramCache]: Analyzing trace with hash 470174386, now seen corresponding path program 1 times [2021-11-25 19:27:36,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:36,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272372913] [2021-11-25 19:27:36,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:36,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-25 19:27:36,855 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:36,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272372913] [2021-11-25 19:27:36,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272372913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:27:36,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:27:36,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:27:36,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673642476] [2021-11-25 19:27:36,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:27:36,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:27:36,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:36,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:27:36,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:27:36,860 INFO L87 Difference]: Start difference. First operand 4497 states and 6466 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, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 19:27:40,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:27:49,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:27:50,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:50,544 INFO L93 Difference]: Finished difference Result 13370 states and 19250 transitions. [2021-11-25 19:27:50,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:27:50,544 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, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 215 [2021-11-25 19:27:50,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:50,642 INFO L225 Difference]: With dead ends: 13370 [2021-11-25 19:27:50,643 INFO L226 Difference]: Without dead ends: 8912 [2021-11-25 19:27:50,674 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 19:27:50,675 INFO L933 BasicCegarLoop]: 3566 mSDtfsCounter, 3222 mSDsluCounter, 3287 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3228 SdHoareTripleChecker+Valid, 6341 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:50,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3228 Valid, 6341 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1059 Invalid, 2 Unknown, 0 Unchecked, 13.1s Time] [2021-11-25 19:27:50,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8912 states. [2021-11-25 19:27:51,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8912 to 8882. [2021-11-25 19:27:51,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8882 states, 5345 states have (on average 1.3148737137511692) internal successors, (7028), 5605 states have internal predecessors, (7028), 2866 states have call successors, (2866), 669 states have call predecessors, (2866), 668 states have return successors, (2904), 2803 states have call predecessors, (2904), 2862 states have call successors, (2904) [2021-11-25 19:27:51,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8882 states to 8882 states and 12798 transitions. [2021-11-25 19:27:51,281 INFO L78 Accepts]: Start accepts. Automaton has 8882 states and 12798 transitions. Word has length 215 [2021-11-25 19:27:51,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:51,284 INFO L470 AbstractCegarLoop]: Abstraction has 8882 states and 12798 transitions. [2021-11-25 19:27:51,287 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, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 19:27:51,289 INFO L276 IsEmpty]: Start isEmpty. Operand 8882 states and 12798 transitions. [2021-11-25 19:27:51,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-25 19:27:51,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:51,296 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:51,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:27:51,296 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 19:27:51,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:51,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1752734352, now seen corresponding path program 1 times [2021-11-25 19:27:51,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:51,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413720291] [2021-11-25 19:27:51,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:51,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-25 19:27:51,891 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:51,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413720291] [2021-11-25 19:27:51,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413720291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:27:51,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:27:51,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:27:51,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878373320] [2021-11-25 19:27:51,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:27:51,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:27:51,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:51,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:27:51,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:27:51,899 INFO L87 Difference]: Start difference. First operand 8882 states and 12798 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 19:27:57,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:04,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:05,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:28:05,489 INFO L93 Difference]: Finished difference Result 26315 states and 37936 transitions. [2021-11-25 19:28:05,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:28:05,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 226 [2021-11-25 19:28:05,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:28:05,683 INFO L225 Difference]: With dead ends: 26315 [2021-11-25 19:28:05,683 INFO L226 Difference]: Without dead ends: 17472 [2021-11-25 19:28:05,745 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 19:28:05,747 INFO L933 BasicCegarLoop]: 3627 mSDtfsCounter, 3142 mSDsluCounter, 3300 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3147 SdHoareTripleChecker+Valid, 6411 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:28:05,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3147 Valid, 6411 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1068 Invalid, 2 Unknown, 0 Unchecked, 12.9s Time] [2021-11-25 19:28:05,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17472 states. [2021-11-25 19:28:06,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17472 to 17424. [2021-11-25 19:28:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17424 states, 10489 states have (on average 1.3139479454666794) internal successors, (13782), 10991 states have internal predecessors, (13782), 5606 states have call successors, (5606), 1327 states have call predecessors, (5606), 1326 states have return successors, (5748), 5477 states have call predecessors, (5748), 5602 states have call successors, (5748) [2021-11-25 19:28:06,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17424 states to 17424 states and 25136 transitions. [2021-11-25 19:28:06,989 INFO L78 Accepts]: Start accepts. Automaton has 17424 states and 25136 transitions. Word has length 226 [2021-11-25 19:28:06,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:28:06,995 INFO L470 AbstractCegarLoop]: Abstraction has 17424 states and 25136 transitions. [2021-11-25 19:28:06,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 19:28:06,996 INFO L276 IsEmpty]: Start isEmpty. Operand 17424 states and 25136 transitions. [2021-11-25 19:28:07,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-25 19:28:07,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:28:07,008 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:28:07,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:28:07,008 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 19:28:07,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:28:07,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1954610263, now seen corresponding path program 1 times [2021-11-25 19:28:07,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:28:07,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947660463] [2021-11-25 19:28:07,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:28:07,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:28:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:28:07,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2021-11-25 19:28:07,585 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:28:07,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947660463] [2021-11-25 19:28:07,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947660463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:28:07,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:28:07,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:28:07,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004259851] [2021-11-25 19:28:07,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:28:07,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:28:07,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:28:07,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:28:07,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:28:07,588 INFO L87 Difference]: Start difference. First operand 17424 states and 25136 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 19:28:11,980 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:31,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:28:31,620 INFO L93 Difference]: Finished difference Result 45406 states and 65045 transitions. [2021-11-25 19:28:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:28:31,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 237 [2021-11-25 19:28:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:28:31,804 INFO L225 Difference]: With dead ends: 45406 [2021-11-25 19:28:31,804 INFO L226 Difference]: Without dead ends: 28021 [2021-11-25 19:28:31,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:28:31,906 INFO L933 BasicCegarLoop]: 4044 mSDtfsCounter, 7632 mSDsluCounter, 7930 mSDsCounter, 0 mSdLazyCounter, 4814 mSolverCounterSat, 1154 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7846 SdHoareTripleChecker+Valid, 10361 SdHoareTripleChecker+Invalid, 5969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1154 IncrementalHoareTripleChecker+Valid, 4814 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:28:31,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7846 Valid, 10361 Invalid, 5969 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1154 Valid, 4814 Invalid, 1 Unknown, 0 Unchecked, 22.8s Time] [2021-11-25 19:28:31,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28021 states. [2021-11-25 19:28:33,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28021 to 27951. [2021-11-25 19:28:33,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27951 states, 16742 states have (on average 1.3087444749731214) internal successors, (21911), 17559 states have internal predecessors, (21911), 8846 states have call successors, (8846), 2359 states have call predecessors, (8846), 2360 states have return successors, (8996), 8658 states have call predecessors, (8996), 8842 states have call successors, (8996) [2021-11-25 19:28:33,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27951 states to 27951 states and 39753 transitions. [2021-11-25 19:28:33,759 INFO L78 Accepts]: Start accepts. Automaton has 27951 states and 39753 transitions. Word has length 237 [2021-11-25 19:28:33,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:28:33,761 INFO L470 AbstractCegarLoop]: Abstraction has 27951 states and 39753 transitions. [2021-11-25 19:28:33,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 19:28:33,761 INFO L276 IsEmpty]: Start isEmpty. Operand 27951 states and 39753 transitions. [2021-11-25 19:28:33,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-25 19:28:33,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:28:33,769 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:33,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:28:33,770 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 19:28:33,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:28:33,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1595577671, now seen corresponding path program 1 times [2021-11-25 19:28:33,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:28:33,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810574052] [2021-11-25 19:28:33,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:28:33,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:28:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:28:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-25 19:28:34,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:28:34,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810574052] [2021-11-25 19:28:34,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810574052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:28:34,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:28:34,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:28:34,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284036862] [2021-11-25 19:28:34,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:28:34,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:28:34,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:28:34,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:28:34,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:28:34,108 INFO L87 Difference]: Start difference. First operand 27951 states and 39753 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-25 19:28:36,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:43,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:45,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:28:45,378 INFO L93 Difference]: Finished difference Result 65887 states and 92663 transitions. [2021-11-25 19:28:45,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:28:45,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 237 [2021-11-25 19:28:45,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:28:45,618 INFO L225 Difference]: With dead ends: 65887 [2021-11-25 19:28:45,618 INFO L226 Difference]: Without dead ends: 37975 [2021-11-25 19:28:45,736 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 19:28:45,737 INFO L933 BasicCegarLoop]: 3375 mSDtfsCounter, 2495 mSDsluCounter, 3201 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2498 SdHoareTripleChecker+Valid, 6109 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:28:45,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2498 Valid, 6109 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1108 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2021-11-25 19:28:45,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37975 states. [2021-11-25 19:28:47,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37975 to 37938. [2021-11-25 19:28:47,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37938 states, 22687 states have (on average 1.2874774099704678) internal successors, (29209), 23812 states have internal predecessors, (29209), 11670 states have call successors, (11670), 3579 states have call predecessors, (11670), 3578 states have return successors, (11964), 11360 states have call predecessors, (11964), 11666 states have call successors, (11964) [2021-11-25 19:28:47,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37938 states to 37938 states and 52843 transitions. [2021-11-25 19:28:47,894 INFO L78 Accepts]: Start accepts. Automaton has 37938 states and 52843 transitions. Word has length 237 [2021-11-25 19:28:47,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:28:47,895 INFO L470 AbstractCegarLoop]: Abstraction has 37938 states and 52843 transitions. [2021-11-25 19:28:47,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-25 19:28:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 37938 states and 52843 transitions. [2021-11-25 19:28:47,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-25 19:28:47,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:28:47,901 INFO L514 BasicCegarLoop]: trace histogram [21, 19, 19, 19, 19, 19, 19, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:28:47,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:28:47,902 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:28:47,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:28:47,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1296675299, now seen corresponding path program 1 times [2021-11-25 19:28:47,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:28:47,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105569387] [2021-11-25 19:28:47,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:28:47,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:28:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:28:48,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1446 trivial. 0 not checked. [2021-11-25 19:28:48,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:28:48,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105569387] [2021-11-25 19:28:48,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105569387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:28:48,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:28:48,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:28:48,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707079926] [2021-11-25 19:28:48,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:28:48,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:28:48,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:28:48,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:28:48,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:28:48,444 INFO L87 Difference]: Start difference. First operand 37938 states and 52843 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 19:28:52,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:58,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:02,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:29:02,456 INFO L93 Difference]: Finished difference Result 108254 states and 151255 transitions. [2021-11-25 19:29:02,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:29:02,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 244 [2021-11-25 19:29:02,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:29:03,063 INFO L225 Difference]: With dead ends: 108254 [2021-11-25 19:29:03,063 INFO L226 Difference]: Without dead ends: 70355 [2021-11-25 19:29:03,208 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 19:29:03,210 INFO L933 BasicCegarLoop]: 3714 mSDtfsCounter, 3233 mSDsluCounter, 3299 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3236 SdHoareTripleChecker+Valid, 6498 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:29:03,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3236 Valid, 6498 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1072 Invalid, 2 Unknown, 0 Unchecked, 11.9s Time] [2021-11-25 19:29:03,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70355 states. [2021-11-25 19:29:06,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70355 to 70282. [2021-11-25 19:29:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70282 states, 41973 states have (on average 1.2907106949705762) internal successors, (54175), 44117 states have internal predecessors, (54175), 21805 states have call successors, (21805), 6510 states have call predecessors, (21805), 6501 states have return successors, (22359), 21168 states have call predecessors, (22359), 21801 states have call successors, (22359) [2021-11-25 19:29:07,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70282 states to 70282 states and 98339 transitions. [2021-11-25 19:29:07,447 INFO L78 Accepts]: Start accepts. Automaton has 70282 states and 98339 transitions. Word has length 244 [2021-11-25 19:29:07,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:29:07,448 INFO L470 AbstractCegarLoop]: Abstraction has 70282 states and 98339 transitions. [2021-11-25 19:29:07,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 19:29:07,448 INFO L276 IsEmpty]: Start isEmpty. Operand 70282 states and 98339 transitions. [2021-11-25 19:29:07,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-25 19:29:07,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:29:07,454 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:07,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:29:07,454 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 19:29:07,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:29:07,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1382187646, now seen corresponding path program 1 times [2021-11-25 19:29:07,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:29:07,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750011396] [2021-11-25 19:29:07,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:29:07,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:29:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:29:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1559 trivial. 0 not checked. [2021-11-25 19:29:08,216 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:29:08,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750011396] [2021-11-25 19:29:08,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750011396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:29:08,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:29:08,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:29:08,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653731320] [2021-11-25 19:29:08,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:29:08,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:29:08,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:29:08,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:29:08,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:29:08,220 INFO L87 Difference]: Start difference. First operand 70282 states and 98339 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 19:29:12,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:22,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:29:22,600 INFO L93 Difference]: Finished difference Result 70332 states and 98393 transitions. [2021-11-25 19:29:22,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:29:22,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) Word has length 253 [2021-11-25 19:29:22,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:29:22,971 INFO L225 Difference]: With dead ends: 70332 [2021-11-25 19:29:22,972 INFO L226 Difference]: Without dead ends: 70330 [2021-11-25 19:29:23,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:29:23,008 INFO L933 BasicCegarLoop]: 2793 mSDtfsCounter, 3240 mSDsluCounter, 6671 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3254 SdHoareTripleChecker+Valid, 8401 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:29:23,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3254 Valid, 8401 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1608 Invalid, 1 Unknown, 0 Unchecked, 12.4s Time] [2021-11-25 19:29:23,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70330 states. [2021-11-25 19:29:26,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70330 to 70328. [2021-11-25 19:29:26,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70328 states, 42000 states have (on average 1.2906190476190476) internal successors, (54206), 44145 states have internal predecessors, (54206), 21814 states have call successors, (21814), 6519 states have call predecessors, (21814), 6511 states have return successors, (22370), 21177 states have call predecessors, (22370), 21810 states have call successors, (22370) [2021-11-25 19:29:26,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70328 states to 70328 states and 98390 transitions. [2021-11-25 19:29:26,530 INFO L78 Accepts]: Start accepts. Automaton has 70328 states and 98390 transitions. Word has length 253 [2021-11-25 19:29:26,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:29:26,533 INFO L470 AbstractCegarLoop]: Abstraction has 70328 states and 98390 transitions. [2021-11-25 19:29:26,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 19:29:26,533 INFO L276 IsEmpty]: Start isEmpty. Operand 70328 states and 98390 transitions. [2021-11-25 19:29:26,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-25 19:29:26,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:29:26,538 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:29:26,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:29:26,539 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 19:29:26,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:29:26,540 INFO L85 PathProgramCache]: Analyzing trace with hash 49828673, now seen corresponding path program 1 times [2021-11-25 19:29:26,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:29:26,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331365459] [2021-11-25 19:29:26,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:29:26,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:29:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:29:27,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1559 trivial. 0 not checked. [2021-11-25 19:29:27,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:29:27,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331365459] [2021-11-25 19:29:27,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331365459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:29:27,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:29:27,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:29:27,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936969038] [2021-11-25 19:29:27,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:29:27,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:29:27,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:29:27,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:29:27,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:29:27,409 INFO L87 Difference]: Start difference. First operand 70328 states and 98390 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 19:29:32,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:41,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:42,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:29:42,812 INFO L93 Difference]: Finished difference Result 70336 states and 98396 transitions. [2021-11-25 19:29:42,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:29:42,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 258 [2021-11-25 19:29:42,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:29:43,234 INFO L225 Difference]: With dead ends: 70336 [2021-11-25 19:29:43,234 INFO L226 Difference]: Without dead ends: 70334 [2021-11-25 19:29:43,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:29:43,258 INFO L933 BasicCegarLoop]: 2796 mSDtfsCounter, 3235 mSDsluCounter, 6671 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3248 SdHoareTripleChecker+Valid, 8404 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:29:43,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3248 Valid, 8404 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1608 Invalid, 1 Unknown, 0 Unchecked, 13.3s Time] [2021-11-25 19:29:43,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70334 states. [2021-11-25 19:29:46,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70334 to 70332. [2021-11-25 19:29:46,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70332 states, 42003 states have (on average 1.2905982905982907) internal successors, (54209), 44148 states have internal predecessors, (54209), 21814 states have call successors, (21814), 6520 states have call predecessors, (21814), 6512 states have return successors, (22370), 21177 states have call predecessors, (22370), 21810 states have call successors, (22370) [2021-11-25 19:29:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70332 states to 70332 states and 98393 transitions. [2021-11-25 19:29:46,660 INFO L78 Accepts]: Start accepts. Automaton has 70332 states and 98393 transitions. Word has length 258 [2021-11-25 19:29:46,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:29:46,661 INFO L470 AbstractCegarLoop]: Abstraction has 70332 states and 98393 transitions. [2021-11-25 19:29:46,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 19:29:46,662 INFO L276 IsEmpty]: Start isEmpty. Operand 70332 states and 98393 transitions. [2021-11-25 19:29:46,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-25 19:29:46,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:29:46,671 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:46,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:29:46,671 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 19:29:46,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:29:46,672 INFO L85 PathProgramCache]: Analyzing trace with hash -907112061, now seen corresponding path program 1 times [2021-11-25 19:29:46,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:29:46,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327613669] [2021-11-25 19:29:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:29:46,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:29:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:29:47,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1571 trivial. 0 not checked. [2021-11-25 19:29:47,663 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:29:47,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327613669] [2021-11-25 19:29:47,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327613669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:29:47,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:29:47,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:29:47,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199482775] [2021-11-25 19:29:47,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:29:47,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:29:47,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:29:47,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:29:47,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:29:47,666 INFO L87 Difference]: Start difference. First operand 70332 states and 98393 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 19:29:52,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:59,290 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:30:04,432 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:30:06,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:30:06,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:30:06,514 INFO L93 Difference]: Finished difference Result 70356 states and 98407 transitions. [2021-11-25 19:30:06,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:30:06,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 267 [2021-11-25 19:30:06,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:30:06,952 INFO L225 Difference]: With dead ends: 70356 [2021-11-25 19:30:06,952 INFO L226 Difference]: Without dead ends: 70354 [2021-11-25 19:30:06,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:30:06,978 INFO L933 BasicCegarLoop]: 2796 mSDtfsCounter, 3224 mSDsluCounter, 6677 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3239 SdHoareTripleChecker+Valid, 8409 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:30:06,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3239 Valid, 8409 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1608 Invalid, 2 Unknown, 0 Unchecked, 16.6s Time] [2021-11-25 19:30:07,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70354 states. [2021-11-25 19:30:10,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70354 to 70352. [2021-11-25 19:30:10,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70352 states, 42014 states have (on average 1.29052220688342) internal successors, (54220), 44159 states have internal predecessors, (54220), 21814 states have call successors, (21814), 6529 states have call predecessors, (21814), 6521 states have return successors, (22370), 21177 states have call predecessors, (22370), 21810 states have call successors, (22370) [2021-11-25 19:30:10,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70352 states to 70352 states and 98404 transitions. [2021-11-25 19:30:10,546 INFO L78 Accepts]: Start accepts. Automaton has 70352 states and 98404 transitions. Word has length 267 [2021-11-25 19:30:10,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:30:10,548 INFO L470 AbstractCegarLoop]: Abstraction has 70352 states and 98404 transitions. [2021-11-25 19:30:10,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 19:30:10,548 INFO L276 IsEmpty]: Start isEmpty. Operand 70352 states and 98404 transitions. [2021-11-25 19:30:10,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-25 19:30:10,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:30:10,556 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:10,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:30:10,557 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:30:10,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:30:10,558 INFO L85 PathProgramCache]: Analyzing trace with hash 73404124, now seen corresponding path program 1 times [2021-11-25 19:30:10,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:30:10,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753991264] [2021-11-25 19:30:10,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:30:10,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:30:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:30:10,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1585 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1579 trivial. 0 not checked. [2021-11-25 19:30:10,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:30:10,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753991264] [2021-11-25 19:30:10,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753991264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:30:10,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:30:10,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:30:10,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208967486] [2021-11-25 19:30:10,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:30:10,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:30:10,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:30:11,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:30:11,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:30:11,000 INFO L87 Difference]: Start difference. First operand 70352 states and 98404 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 19:30:15,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:30:23,526 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:30:29,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:30:29,796 INFO L93 Difference]: Finished difference Result 76946 states and 105593 transitions. [2021-11-25 19:30:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:30:29,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 272 [2021-11-25 19:30:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:30:30,100 INFO L225 Difference]: With dead ends: 76946 [2021-11-25 19:30:30,100 INFO L226 Difference]: Without dead ends: 76944 [2021-11-25 19:30:30,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:30:30,130 INFO L933 BasicCegarLoop]: 2841 mSDtfsCounter, 3020 mSDsluCounter, 7148 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3031 SdHoareTripleChecker+Valid, 8872 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:30:30,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3031 Valid, 8872 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1660 Invalid, 2 Unknown, 0 Unchecked, 16.3s Time] [2021-11-25 19:30:30,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76944 states. [2021-11-25 19:30:33,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76944 to 76944. [2021-11-25 19:30:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76944 states, 45673 states have (on average 1.277844678475248) internal successors, (58363), 47904 states have internal predecessors, (58363), 23336 states have call successors, (23336), 7940 states have call predecessors, (23336), 7932 states have return successors, (23892), 22699 states have call predecessors, (23892), 23332 states have call successors, (23892) [2021-11-25 19:30:34,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76944 states to 76944 states and 105591 transitions. [2021-11-25 19:30:34,441 INFO L78 Accepts]: Start accepts. Automaton has 76944 states and 105591 transitions. Word has length 272 [2021-11-25 19:30:34,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:30:34,442 INFO L470 AbstractCegarLoop]: Abstraction has 76944 states and 105591 transitions. [2021-11-25 19:30:34,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 19:30:34,443 INFO L276 IsEmpty]: Start isEmpty. Operand 76944 states and 105591 transitions. [2021-11-25 19:30:34,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-25 19:30:34,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:30:34,451 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:34,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:30:34,452 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 19:30:34,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:30:34,452 INFO L85 PathProgramCache]: Analyzing trace with hash -46604866, now seen corresponding path program 1 times [2021-11-25 19:30:34,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:30:34,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19570992] [2021-11-25 19:30:34,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:30:34,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:30:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:30:34,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1583 trivial. 0 not checked. [2021-11-25 19:30:34,866 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:30:34,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19570992] [2021-11-25 19:30:34,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19570992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:30:34,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:30:34,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:30:34,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050110940] [2021-11-25 19:30:34,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:30:34,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:30:34,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:30:34,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:30:34,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:30:34,869 INFO L87 Difference]: Start difference. First operand 76944 states and 105591 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 19:30:39,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:30:50,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:30:50,097 INFO L93 Difference]: Finished difference Result 76952 states and 105597 transitions. [2021-11-25 19:30:50,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:30:50,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 273 [2021-11-25 19:30:50,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:30:50,444 INFO L225 Difference]: With dead ends: 76952 [2021-11-25 19:30:50,444 INFO L226 Difference]: Without dead ends: 76950 [2021-11-25 19:30:50,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:30:50,473 INFO L933 BasicCegarLoop]: 2795 mSDtfsCounter, 3236 mSDsluCounter, 6661 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3246 SdHoareTripleChecker+Valid, 8401 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:30:50,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3246 Valid, 8401 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1596 Invalid, 1 Unknown, 0 Unchecked, 12.2s Time] [2021-11-25 19:30:50,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76950 states. [2021-11-25 19:30:54,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76950 to 76948. [2021-11-25 19:30:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76948 states, 45676 states have (on average 1.2778264296348192) internal successors, (58366), 47907 states have internal predecessors, (58366), 23336 states have call successors, (23336), 7941 states have call predecessors, (23336), 7933 states have return successors, (23892), 22699 states have call predecessors, (23892), 23332 states have call successors, (23892) [2021-11-25 19:30:54,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76948 states to 76948 states and 105594 transitions. [2021-11-25 19:30:54,738 INFO L78 Accepts]: Start accepts. Automaton has 76948 states and 105594 transitions. Word has length 273 [2021-11-25 19:30:54,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:30:54,739 INFO L470 AbstractCegarLoop]: Abstraction has 76948 states and 105594 transitions. [2021-11-25 19:30:54,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 19:30:54,739 INFO L276 IsEmpty]: Start isEmpty. Operand 76948 states and 105594 transitions. [2021-11-25 19:30:54,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-25 19:30:54,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:30:54,747 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:54,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:30:54,747 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 19:30:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:30:54,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1686986497, now seen corresponding path program 1 times [2021-11-25 19:30:54,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:30:54,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743665259] [2021-11-25 19:30:54,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:30:54,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:30:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:30:55,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1609 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1599 trivial. 0 not checked. [2021-11-25 19:30:55,155 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:30:55,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743665259] [2021-11-25 19:30:55,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743665259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:30:55,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:30:55,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:30:55,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133133149] [2021-11-25 19:30:55,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:30:55,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:30:55,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:30:55,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:30:55,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:30:55,157 INFO L87 Difference]: Start difference. First operand 76948 states and 105594 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 19:30:59,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:31:01,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:31:03,909 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:31:09,748 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:31:12,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:31:18,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:31:18,366 INFO L93 Difference]: Finished difference Result 76954 states and 105599 transitions. [2021-11-25 19:31:18,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:31:18,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 278 [2021-11-25 19:31:18,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:31:18,683 INFO L225 Difference]: With dead ends: 76954 [2021-11-25 19:31:18,684 INFO L226 Difference]: Without dead ends: 76952 [2021-11-25 19:31:18,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:31:18,715 INFO L933 BasicCegarLoop]: 2786 mSDtfsCounter, 3227 mSDsluCounter, 6605 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3236 SdHoareTripleChecker+Valid, 8344 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:31:18,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3236 Valid, 8344 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1586 Invalid, 3 Unknown, 0 Unchecked, 20.1s Time] [2021-11-25 19:31:18,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76952 states. [2021-11-25 19:31:22,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76952 to 76952. [2021-11-25 19:31:22,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76952 states, 45679 states have (on average 1.2778081831914008) internal successors, (58369), 47910 states have internal predecessors, (58369), 23336 states have call successors, (23336), 7942 states have call predecessors, (23336), 7934 states have return successors, (23892), 22699 states have call predecessors, (23892), 23332 states have call successors, (23892) [2021-11-25 19:31:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76952 states to 76952 states and 105597 transitions. [2021-11-25 19:31:22,988 INFO L78 Accepts]: Start accepts. Automaton has 76952 states and 105597 transitions. Word has length 278 [2021-11-25 19:31:22,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:31:22,990 INFO L470 AbstractCegarLoop]: Abstraction has 76952 states and 105597 transitions. [2021-11-25 19:31:22,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 19:31:22,990 INFO L276 IsEmpty]: Start isEmpty. Operand 76952 states and 105597 transitions. [2021-11-25 19:31:22,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-25 19:31:22,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:31:22,999 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:22,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:31:23,000 INFO L402 AbstractCegarLoop]: === Iteration 13 === 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 19:31:23,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:31:23,001 INFO L85 PathProgramCache]: Analyzing trace with hash 89343838, now seen corresponding path program 1 times [2021-11-25 19:31:23,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:31:23,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299556460] [2021-11-25 19:31:23,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:31:23,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:31:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:31:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1631 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1619 trivial. 0 not checked. [2021-11-25 19:31:23,795 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:31:23,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299556460] [2021-11-25 19:31:23,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299556460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:31:23,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:31:23,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:31:23,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849275000] [2021-11-25 19:31:23,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:31:23,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:31:23,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:31:23,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:31:23,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:31:23,799 INFO L87 Difference]: Start difference. First operand 76952 states and 105597 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-25 19:31:28,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:31:39,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:31:39,845 INFO L93 Difference]: Finished difference Result 76960 states and 105603 transitions. [2021-11-25 19:31:39,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:31:39,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 283 [2021-11-25 19:31:39,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:31:40,136 INFO L225 Difference]: With dead ends: 76960 [2021-11-25 19:31:40,136 INFO L226 Difference]: Without dead ends: 76958 [2021-11-25 19:31:40,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:31:40,166 INFO L933 BasicCegarLoop]: 2795 mSDtfsCounter, 3236 mSDsluCounter, 6661 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3244 SdHoareTripleChecker+Valid, 8401 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:31:40,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3244 Valid, 8401 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1596 Invalid, 1 Unknown, 0 Unchecked, 13.0s Time] [2021-11-25 19:31:40,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76958 states. [2021-11-25 19:31:44,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76958 to 76956. [2021-11-25 19:31:44,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76956 states, 45682 states have (on average 1.2777899391445209) internal successors, (58372), 47913 states have internal predecessors, (58372), 23336 states have call successors, (23336), 7943 states have call predecessors, (23336), 7935 states have return successors, (23892), 22699 states have call predecessors, (23892), 23332 states have call successors, (23892) [2021-11-25 19:31:44,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76956 states to 76956 states and 105600 transitions. [2021-11-25 19:31:44,890 INFO L78 Accepts]: Start accepts. Automaton has 76956 states and 105600 transitions. Word has length 283 [2021-11-25 19:31:44,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:31:44,891 INFO L470 AbstractCegarLoop]: Abstraction has 76956 states and 105600 transitions. [2021-11-25 19:31:44,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-25 19:31:44,891 INFO L276 IsEmpty]: Start isEmpty. Operand 76956 states and 105600 transitions. [2021-11-25 19:31:44,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-25 19:31:44,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:31:44,900 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 8, 7, 7, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:44,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 19:31:44,900 INFO L402 AbstractCegarLoop]: === Iteration 14 === 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 19:31:44,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:31:44,901 INFO L85 PathProgramCache]: Analyzing trace with hash -286417124, now seen corresponding path program 1 times [2021-11-25 19:31:44,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:31:44,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245072318] [2021-11-25 19:31:44,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:31:44,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:31:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:31:45,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1665 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2021-11-25 19:31:45,288 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:31:45,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245072318] [2021-11-25 19:31:45,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245072318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:31:45,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:31:45,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:31:45,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027526423] [2021-11-25 19:31:45,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:31:45,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:31:45,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:31:45,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:31:45,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:31:45,291 INFO L87 Difference]: Start difference. First operand 76956 states and 105600 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-25 19:31:50,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:31:58,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:32:03,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:32:04,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:32:06,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:32:06,609 INFO L93 Difference]: Finished difference Result 76964 states and 105606 transitions. [2021-11-25 19:32:06,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:32:06,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 292 [2021-11-25 19:32:06,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:32:07,073 INFO L225 Difference]: With dead ends: 76964 [2021-11-25 19:32:07,073 INFO L226 Difference]: Without dead ends: 76962 [2021-11-25 19:32:07,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:32:07,102 INFO L933 BasicCegarLoop]: 2795 mSDtfsCounter, 3225 mSDsluCounter, 6667 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3235 SdHoareTripleChecker+Valid, 8406 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:32:07,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3235 Valid, 8406 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1596 Invalid, 2 Unknown, 0 Unchecked, 17.9s Time] [2021-11-25 19:32:07,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76962 states. [2021-11-25 19:32:11,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76962 to 76960. [2021-11-25 19:32:11,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76960 states, 45685 states have (on average 1.277771697493707) internal successors, (58375), 47916 states have internal predecessors, (58375), 23336 states have call successors, (23336), 7944 states have call predecessors, (23336), 7936 states have return successors, (23892), 22699 states have call predecessors, (23892), 23332 states have call successors, (23892) [2021-11-25 19:32:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76960 states to 76960 states and 105603 transitions. [2021-11-25 19:32:11,961 INFO L78 Accepts]: Start accepts. Automaton has 76960 states and 105603 transitions. Word has length 292 [2021-11-25 19:32:11,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:32:11,962 INFO L470 AbstractCegarLoop]: Abstraction has 76960 states and 105603 transitions. [2021-11-25 19:32:11,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-25 19:32:11,963 INFO L276 IsEmpty]: Start isEmpty. Operand 76960 states and 105603 transitions. [2021-11-25 19:32:11,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-25 19:32:11,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:32:11,974 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 9, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:11,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 19:32:11,974 INFO L402 AbstractCegarLoop]: === Iteration 15 === 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 19:32:11,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:32:11,975 INFO L85 PathProgramCache]: Analyzing trace with hash 866113790, now seen corresponding path program 1 times [2021-11-25 19:32:11,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:32:11,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027648451] [2021-11-25 19:32:11,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:32:11,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:32:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:32:12,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1687 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1671 trivial. 0 not checked. [2021-11-25 19:32:12,380 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:32:12,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027648451] [2021-11-25 19:32:12,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027648451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:32:12,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:32:12,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:32:12,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510490277] [2021-11-25 19:32:12,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:32:12,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:32:12,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:32:12,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:32:12,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:32:12,384 INFO L87 Difference]: Start difference. First operand 76960 states and 105603 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-25 19:32:17,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:32:25,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []