./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.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_eb7d16e2-617d-4d24-9177-714576eadece/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7d16e2-617d-4d24-9177-714576eadece/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_eb7d16e2-617d-4d24-9177-714576eadece/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7d16e2-617d-4d24-9177-714576eadece/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7d16e2-617d-4d24-9177-714576eadece/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_eb7d16e2-617d-4d24-9177-714576eadece/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 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:20:20,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:20:20,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:20:20,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:20:20,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:20:20,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:20:20,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:20:20,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:20:20,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:20:20,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:20:20,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:20:20,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:20:20,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:20:20,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:20:20,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:20:20,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:20:20,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:20:20,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:20:20,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:20:20,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:20:20,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:20:20,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:20:20,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:20:20,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:20:20,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:20:20,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:20:20,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:20:20,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:20:20,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:20:20,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:20:20,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:20:20,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:20:20,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:20:20,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:20:20,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:20:20,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:20:20,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:20:20,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:20:20,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:20:20,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:20:20,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:20:20,899 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7d16e2-617d-4d24-9177-714576eadece/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:20:20,945 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:20:20,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:20:20,946 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:20:20,947 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:20:20,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:20:20,954 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:20:20,955 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:20:20,955 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:20:20,955 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:20:20,955 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:20:20,956 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:20:20,957 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:20:20,957 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:20:20,957 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:20:20,957 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:20:20,958 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:20:20,958 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:20:20,958 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:20:20,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:20:20,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:20:20,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:20:20,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:20:20,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:20:20,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:20:20,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:20:20,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:20:20,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:20:20,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:20:20,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:20:20,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:20:20,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:20:20,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:20:20,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:20:20,965 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:20:20,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:20:20,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:20:20,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:20:20,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:20:20,966 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_eb7d16e2-617d-4d24-9177-714576eadece/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7d16e2-617d-4d24-9177-714576eadece/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 [2021-11-25 18:20:21,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:20:21,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:20:21,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:20:21,283 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:20:21,284 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:20:21,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7d16e2-617d-4d24-9177-714576eadece/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-25 18:20:21,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7d16e2-617d-4d24-9177-714576eadece/bin/utaipan-eEHZpOm5b7/data/b224a0ff4/7f3b4b8f33a644bf9884ef5333819ecb/FLAG348b8c321 [2021-11-25 18:20:22,525 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:20:22,526 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7d16e2-617d-4d24-9177-714576eadece/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-25 18:20:22,593 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7d16e2-617d-4d24-9177-714576eadece/bin/utaipan-eEHZpOm5b7/data/b224a0ff4/7f3b4b8f33a644bf9884ef5333819ecb/FLAG348b8c321 [2021-11-25 18:20:22,788 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7d16e2-617d-4d24-9177-714576eadece/bin/utaipan-eEHZpOm5b7/data/b224a0ff4/7f3b4b8f33a644bf9884ef5333819ecb [2021-11-25 18:20:22,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:20:22,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:20:22,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:20:22,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:20:22,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:20:22,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:20:22" (1/1) ... [2021-11-25 18:20:22,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122f0ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:22, skipping insertion in model container [2021-11-25 18:20:22,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:20:22" (1/1) ... [2021-11-25 18:20:22,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:20:22,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:20:27,404 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_eb7d16e2-617d-4d24-9177-714576eadece/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491234,491247] [2021-11-25 18:20:27,408 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_eb7d16e2-617d-4d24-9177-714576eadece/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491403,491416] [2021-11-25 18:20:27,409 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_eb7d16e2-617d-4d24-9177-714576eadece/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491570,491583] [2021-11-25 18:20:27,416 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_eb7d16e2-617d-4d24-9177-714576eadece/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491738,491751] [2021-11-25 18:20:27,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:20:27,567 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:20:28,165 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_eb7d16e2-617d-4d24-9177-714576eadece/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491234,491247] [2021-11-25 18:20:28,165 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_eb7d16e2-617d-4d24-9177-714576eadece/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491403,491416] [2021-11-25 18:20:28,166 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_eb7d16e2-617d-4d24-9177-714576eadece/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491570,491583] [2021-11-25 18:20:28,166 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_eb7d16e2-617d-4d24-9177-714576eadece/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491738,491751] [2021-11-25 18:20:28,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:20:28,494 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:20:28,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:28 WrapperNode [2021-11-25 18:20:28,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:20:28,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:20:28,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:20:28,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:20:28,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:28" (1/1) ... [2021-11-25 18:20:28,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:28" (1/1) ... [2021-11-25 18:20:29,189 INFO L137 Inliner]: procedures = 567, calls = 5326, calls flagged for inlining = 289, calls inlined = 261, statements flattened = 11363 [2021-11-25 18:20:29,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:20:29,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:20:29,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:20:29,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:20:29,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:28" (1/1) ... [2021-11-25 18:20:29,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:28" (1/1) ... [2021-11-25 18:20:29,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:28" (1/1) ... [2021-11-25 18:20:29,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:28" (1/1) ... [2021-11-25 18:20:29,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:28" (1/1) ... [2021-11-25 18:20:29,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:28" (1/1) ... [2021-11-25 18:20:29,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:28" (1/1) ... [2021-11-25 18:20:29,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:20:29,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:20:29,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:20:29,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:20:29,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:28" (1/1) ... [2021-11-25 18:20:29,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:20:29,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7d16e2-617d-4d24-9177-714576eadece/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:20:29,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7d16e2-617d-4d24-9177-714576eadece/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:20:29,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7d16e2-617d-4d24-9177-714576eadece/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:20:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_up [2021-11-25 18:20:29,855 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_up [2021-11-25 18:20:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_media_task [2021-11-25 18:20:29,856 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_media_task [2021-11-25 18:20:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 18:20:29,856 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 18:20:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:20:29,856 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:20:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-25 18:20:29,857 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-25 18:20:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 18:20:29,857 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 18:20:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_select_media [2021-11-25 18:20:29,857 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_select_media [2021-11-25 18:20:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit_le [2021-11-25 18:20:29,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit_le [2021-11-25 18:20:29,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:20:29,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:20:29,858 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 18:20:29,858 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 18:20:29,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:20:29,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:20:29,858 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 18:20:29,859 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 18:20:29,859 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 18:20:29,859 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 18:20:29,859 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 18:20:29,860 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 18:20:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-25 18:20:29,860 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-25 18:20:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2021-11-25 18:20:29,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2021-11-25 18:20:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-25 18:20:29,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-25 18:20:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 18:20:29,861 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 18:20:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-11-25 18:20:29,861 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-11-25 18:20:29,862 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 18:20:29,862 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 18:20:29,862 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 18:20:29,862 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 18:20:29,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:20:29,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:20:29,864 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_do_nway [2021-11-25 18:20:29,864 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_do_nway [2021-11-25 18:20:29,864 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 18:20:29,864 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 18:20:29,864 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-25 18:20:29,865 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-25 18:20:29,865 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 18:20:29,865 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 18:20:29,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:20:29,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:20:29,866 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 18:20:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 18:20:29,866 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 18:20:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 18:20:29,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:20:29,867 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_wolopts [2021-11-25 18:20:29,867 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_wolopts [2021-11-25 18:20:29,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_61 [2021-11-25 18:20:29,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_61 [2021-11-25 18:20:29,867 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_resume [2021-11-25 18:20:29,867 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_resume [2021-11-25 18:20:29,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-25 18:20:29,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-25 18:20:29,868 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_interrupt [2021-11-25 18:20:29,869 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_interrupt [2021-11-25 18:20:29,869 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:20:29,869 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:20:29,869 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___3 [2021-11-25 18:20:29,869 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___3 [2021-11-25 18:20:29,869 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___1 [2021-11-25 18:20:29,869 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___1 [2021-11-25 18:20:29,869 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_media_task [2021-11-25 18:20:29,870 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_media_task [2021-11-25 18:20:29,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:20:29,871 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___5 [2021-11-25 18:20:29,871 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___5 [2021-11-25 18:20:29,871 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___4 [2021-11-25 18:20:29,871 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___4 [2021-11-25 18:20:29,871 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 18:20:29,872 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 18:20:29,872 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 18:20:29,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 18:20:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:20:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:20:29,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:20:29,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:20:29,874 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-25 18:20:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-25 18:20:29,874 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 18:20:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 18:20:29,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:20:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:20:29,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 18:20:29,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 18:20:29,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:20:29,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:20:29,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 18:20:29,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 18:20:29,876 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_timer [2021-11-25 18:20:29,876 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_timer [2021-11-25 18:20:29,876 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 18:20:29,877 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 18:20:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 18:20:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 18:20:29,880 INFO L130 BoogieDeclarations]: Found specification of procedure poll_tulip [2021-11-25 18:20:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_tulip [2021-11-25 18:20:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_write [2021-11-25 18:20:29,881 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_write [2021-11-25 18:20:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:20:29,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:20:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:20:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 18:20:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 18:20:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:20:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:20:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 18:20:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 18:20:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-25 18:20:29,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-25 18:20:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:20:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:20:29,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:20:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 18:20:29,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 18:20:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:20:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_start_nway [2021-11-25 18:20:29,890 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_start_nway [2021-11-25 18:20:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-25 18:20:29,890 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-25 18:20:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-25 18:20:29,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-25 18:20:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:20:29,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:20:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_tulip_private [2021-11-25 18:20:29,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_tulip_private [2021-11-25 18:20:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 18:20:29,891 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 18:20:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 18:20:29,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 18:20:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 18:20:29,891 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 18:20:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 18:20:29,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 18:20:29,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mii_lock_of_tulip_private [2021-11-25 18:20:29,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mii_lock_of_tulip_private [2021-11-25 18:20:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 18:20:29,892 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 18:20:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_tulip_private [2021-11-25 18:20:29,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_tulip_private [2021-11-25 18:20:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:20:29,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:20:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_close [2021-11-25 18:20:29,892 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_close [2021-11-25 18:20:29,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:20:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:20:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:20:29,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:20:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-25 18:20:29,893 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-25 18:20:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:20:29,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:20:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-25 18:20:29,893 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-25 18:20:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_power_state [2021-11-25 18:20:29,894 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_power_state [2021-11-25 18:20:29,894 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 18:20:29,894 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 18:20:29,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2021-11-25 18:20:29,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2021-11-25 18:20:29,894 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2021-11-25 18:20:29,894 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2021-11-25 18:20:29,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 18:20:29,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 18:20:29,895 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_tx_timeout [2021-11-25 18:20:29,895 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_tx_timeout [2021-11-25 18:20:29,896 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_check_duplex [2021-11-25 18:20:29,896 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_check_duplex [2021-11-25 18:20:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 18:20:29,897 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 18:20:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2021-11-25 18:20:29,897 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2021-11-25 18:20:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2021-11-25 18:20:29,897 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2021-11-25 18:20:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:20:29,897 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:20:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 18:20:29,898 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 18:20:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure comet_timer [2021-11-25 18:20:29,898 INFO L138 BoogieDeclarations]: Found implementation of procedure comet_timer [2021-11-25 18:20:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2021-11-25 18:20:29,898 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2021-11-25 18:20:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 18:20:29,898 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 18:20:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:20:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_read [2021-11-25 18:20:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_read [2021-11-25 18:20:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 18:20:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 18:20:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:20:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-25 18:20:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-25 18:20:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-25 18:20:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-25 18:20:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2021-11-25 18:20:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2021-11-25 18:20:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:20:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_down [2021-11-25 18:20:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_down [2021-11-25 18:20:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_stop_rxtx___2 [2021-11-25 18:20:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_stop_rxtx___2 [2021-11-25 18:20:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_remove_one [2021-11-25 18:20:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_remove_one [2021-11-25 18:20:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:20:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:20:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-25 18:20:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-25 18:20:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure mxic_timer [2021-11-25 18:20:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure mxic_timer [2021-11-25 18:20:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:20:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:20:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 18:20:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 18:20:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_free_ring [2021-11-25 18:20:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_free_ring [2021-11-25 18:20:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-25 18:20:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-25 18:20:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_refill_rx [2021-11-25 18:20:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_refill_rx [2021-11-25 18:20:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_timer [2021-11-25 18:20:29,907 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_timer [2021-11-25 18:20:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 18:20:29,907 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 18:20:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 18:20:29,907 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 18:20:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-25 18:20:29,907 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-25 18:20:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_62 [2021-11-25 18:20:29,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_62 [2021-11-25 18:20:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 18:20:29,909 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 18:20:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:20:29,909 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:20:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:20:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx [2021-11-25 18:20:29,910 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx [2021-11-25 18:20:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:20:29,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:20:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61___0 [2021-11-25 18:20:29,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61___0 [2021-11-25 18:20:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2021-11-25 18:20:29,910 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2021-11-25 18:20:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_start_rxtx [2021-11-25 18:20:29,910 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_start_rxtx [2021-11-25 18:20:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 18:20:29,911 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 18:20:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_open [2021-11-25 18:20:29,911 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_open [2021-11-25 18:20:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 18:20:29,911 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 18:20:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:20:29,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:20:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-25 18:20:29,911 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-25 18:20:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 18:20:29,912 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 18:20:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-25 18:20:29,912 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-25 18:20:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_start_nway [2021-11-25 18:20:29,912 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_start_nway [2021-11-25 18:20:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 18:20:29,912 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 18:20:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_read_eeprom [2021-11-25 18:20:29,912 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_read_eeprom [2021-11-25 18:20:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:20:29,913 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_timer [2021-11-25 18:20:29,913 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_timer [2021-11-25 18:20:29,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:20:29,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:20:31,126 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:20:31,134 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:20:32,242 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:20:41,024 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:20:41,163 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:20:44,429 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:20:44,429 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:20:44,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:20:44 BoogieIcfgContainer [2021-11-25 18:20:44,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:20:44,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:20:44,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:20:44,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:20:44,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:20:22" (1/3) ... [2021-11-25 18:20:44,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f4e4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:20:44, skipping insertion in model container [2021-11-25 18:20:44,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:28" (2/3) ... [2021-11-25 18:20:44,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f4e4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:20:44, skipping insertion in model container [2021-11-25 18:20:44,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:20:44" (3/3) ... [2021-11-25 18:20:44,445 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-25 18:20:44,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:20:44,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 18:20:44,514 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:20:44,521 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:20:44,521 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 18:20:44,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 2632 states, 1547 states have (on average 1.3529411764705883) internal successors, (2093), 1648 states have internal predecessors, (2093), 951 states have call successors, (951), 133 states have call predecessors, (951), 132 states have return successors, (944), 899 states have call predecessors, (944), 944 states have call successors, (944) [2021-11-25 18:20:44,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-25 18:20:44,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:20:44,626 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:20:44,627 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:20:44,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:20:44,633 INFO L85 PathProgramCache]: Analyzing trace with hash 425106636, now seen corresponding path program 1 times [2021-11-25 18:20:44,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:20:44,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555746193] [2021-11-25 18:20:44,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:20:44,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:20:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:20:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-25 18:20:45,736 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:20:45,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555746193] [2021-11-25 18:20:45,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555746193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:20:45,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:20:45,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:20:45,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039457494] [2021-11-25 18:20:45,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:20:45,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:20:45,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:20:45,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:20:45,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:20:45,783 INFO L87 Difference]: Start difference. First operand has 2632 states, 1547 states have (on average 1.3529411764705883) internal successors, (2093), 1648 states have internal predecessors, (2093), 951 states have call successors, (951), 133 states have call predecessors, (951), 132 states have return successors, (944), 899 states have call predecessors, (944), 944 states have call successors, (944) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-25 18:20:51,328 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 18:20:52,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:20:52,328 INFO L93 Difference]: Finished difference Result 7601 states and 11697 transitions. [2021-11-25 18:20:52,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:20:52,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2021-11-25 18:20:52,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:20:52,414 INFO L225 Difference]: With dead ends: 7601 [2021-11-25 18:20:52,414 INFO L226 Difference]: Without dead ends: 4985 [2021-11-25 18:20:52,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:20:52,458 INFO L933 BasicCegarLoop]: 4397 mSDtfsCounter, 3591 mSDsluCounter, 3928 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3591 SdHoareTripleChecker+Valid, 7903 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:20:52,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3591 Valid, 7903 Invalid, 893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 885 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-11-25 18:20:52,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2021-11-25 18:20:53,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 4970. [2021-11-25 18:20:53,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4970 states, 2925 states have (on average 1.3442735042735043) internal successors, (3932), 3114 states have internal predecessors, (3932), 1785 states have call successors, (1785), 258 states have call predecessors, (1785), 257 states have return successors, (1781), 1696 states have call predecessors, (1781), 1781 states have call successors, (1781) [2021-11-25 18:20:53,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4970 states to 4970 states and 7498 transitions. [2021-11-25 18:20:53,160 INFO L78 Accepts]: Start accepts. Automaton has 4970 states and 7498 transitions. Word has length 151 [2021-11-25 18:20:53,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:20:53,162 INFO L470 AbstractCegarLoop]: Abstraction has 4970 states and 7498 transitions. [2021-11-25 18:20:53,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-25 18:20:53,162 INFO L276 IsEmpty]: Start isEmpty. Operand 4970 states and 7498 transitions. [2021-11-25 18:20:53,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-25 18:20:53,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:20:53,169 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:20:53,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:20:53,170 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:20:53,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:20:53,171 INFO L85 PathProgramCache]: Analyzing trace with hash 311107550, now seen corresponding path program 1 times [2021-11-25 18:20:53,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:20:53,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133319029] [2021-11-25 18:20:53,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:20:53,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:20:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:20:53,842 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-25 18:20:53,842 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:20:53,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133319029] [2021-11-25 18:20:53,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133319029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:20:53,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:20:53,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:20:53,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678561017] [2021-11-25 18:20:53,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:20:53,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:20:53,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:20:53,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:20:53,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:20:53,850 INFO L87 Difference]: Start difference. First operand 4970 states and 7498 transitions. 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-25 18:20:59,835 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 18:21:00,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:00,402 INFO L93 Difference]: Finished difference Result 11024 states and 16652 transitions. [2021-11-25 18:21:00,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:21:00,403 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 159 [2021-11-25 18:21:00,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:00,463 INFO L225 Difference]: With dead ends: 11024 [2021-11-25 18:21:00,463 INFO L226 Difference]: Without dead ends: 6081 [2021-11-25 18:21:00,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:00,498 INFO L933 BasicCegarLoop]: 4133 mSDtfsCounter, 2643 mSDsluCounter, 3900 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2643 SdHoareTripleChecker+Valid, 7615 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:00,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2643 Valid, 7615 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 914 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2021-11-25 18:21:00,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6081 states. [2021-11-25 18:21:00,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6081 to 6055. [2021-11-25 18:21:00,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6055 states, 3615 states have (on average 1.3502074688796681) internal successors, (4881), 3833 states have internal predecessors, (4881), 2126 states have call successors, (2126), 313 states have call predecessors, (2126), 311 states have return successors, (2122), 2022 states have call predecessors, (2122), 2122 states have call successors, (2122) [2021-11-25 18:21:00,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6055 states to 6055 states and 9129 transitions. [2021-11-25 18:21:00,993 INFO L78 Accepts]: Start accepts. Automaton has 6055 states and 9129 transitions. Word has length 159 [2021-11-25 18:21:00,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:00,994 INFO L470 AbstractCegarLoop]: Abstraction has 6055 states and 9129 transitions. [2021-11-25 18:21:00,995 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-25 18:21:00,997 INFO L276 IsEmpty]: Start isEmpty. Operand 6055 states and 9129 transitions. [2021-11-25 18:21:01,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-25 18:21:01,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:01,005 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:01,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:21:01,005 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:21:01,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:01,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1999472241, now seen corresponding path program 1 times [2021-11-25 18:21:01,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:01,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412018052] [2021-11-25 18:21:01,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:01,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-25 18:21:01,392 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:01,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412018052] [2021-11-25 18:21:01,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412018052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:01,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:01,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:21:01,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937939990] [2021-11-25 18:21:01,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:01,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:21:01,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:01,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:21:01,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:01,396 INFO L87 Difference]: Start difference. First operand 6055 states and 9129 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-25 18:21:05,800 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 18:21:08,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:08,036 INFO L93 Difference]: Finished difference Result 15534 states and 23385 transitions. [2021-11-25 18:21:08,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:21:08,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 160 [2021-11-25 18:21:08,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:08,129 INFO L225 Difference]: With dead ends: 15534 [2021-11-25 18:21:08,129 INFO L226 Difference]: Without dead ends: 9506 [2021-11-25 18:21:08,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:08,173 INFO L933 BasicCegarLoop]: 4367 mSDtfsCounter, 3447 mSDsluCounter, 3886 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3447 SdHoareTripleChecker+Valid, 7843 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:08,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3447 Valid, 7843 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 898 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-25 18:21:08,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9506 states. [2021-11-25 18:21:08,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9506 to 9468. [2021-11-25 18:21:08,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9468 states, 5622 states have (on average 1.3413376022767698) internal successors, (7541), 5966 states have internal predecessors, (7541), 3343 states have call successors, (3343), 503 states have call predecessors, (3343), 500 states have return successors, (3342), 3170 states have call predecessors, (3342), 3339 states have call successors, (3342) [2021-11-25 18:21:08,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9468 states to 9468 states and 14226 transitions. [2021-11-25 18:21:08,912 INFO L78 Accepts]: Start accepts. Automaton has 9468 states and 14226 transitions. Word has length 160 [2021-11-25 18:21:08,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:08,914 INFO L470 AbstractCegarLoop]: Abstraction has 9468 states and 14226 transitions. [2021-11-25 18:21:08,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-25 18:21:08,915 INFO L276 IsEmpty]: Start isEmpty. Operand 9468 states and 14226 transitions. [2021-11-25 18:21:08,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-25 18:21:08,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:08,919 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:08,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:21:08,922 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:21:08,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:08,923 INFO L85 PathProgramCache]: Analyzing trace with hash -933088271, now seen corresponding path program 1 times [2021-11-25 18:21:08,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:08,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818468579] [2021-11-25 18:21:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:08,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:09,289 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-25 18:21:09,289 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:09,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818468579] [2021-11-25 18:21:09,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818468579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:09,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:09,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:21:09,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483420198] [2021-11-25 18:21:09,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:09,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:21:09,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:09,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:21:09,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:21:09,293 INFO L87 Difference]: Start difference. First operand 9468 states and 14226 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 18:21:21,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:23,683 WARN L534 Checker$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 18:21:26,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:28,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:30,263 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:32,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:34,305 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 18:21:37,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:37,183 INFO L93 Difference]: Finished difference Result 34371 states and 51603 transitions. [2021-11-25 18:21:37,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:21:37,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 165 [2021-11-25 18:21:37,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:37,376 INFO L225 Difference]: With dead ends: 34371 [2021-11-25 18:21:37,376 INFO L226 Difference]: Without dead ends: 24930 [2021-11-25 18:21:37,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:21:37,437 INFO L933 BasicCegarLoop]: 5270 mSDtfsCounter, 9662 mSDsluCounter, 7987 mSDsCounter, 0 mSdLazyCounter, 6469 mSolverCounterSat, 1961 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9754 SdHoareTripleChecker+Valid, 11975 SdHoareTripleChecker+Invalid, 8436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1961 IncrementalHoareTripleChecker+Valid, 6469 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:37,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9754 Valid, 11975 Invalid, 8436 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1961 Valid, 6469 Invalid, 6 Unknown, 0 Unchecked, 27.0s Time] [2021-11-25 18:21:37,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24930 states. [2021-11-25 18:21:39,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24930 to 24844. [2021-11-25 18:21:39,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24844 states, 14722 states have (on average 1.339627767966309) internal successors, (19722), 15664 states have internal predecessors, (19722), 8776 states have call successors, (8776), 1350 states have call predecessors, (8776), 1343 states have return successors, (8781), 8294 states have call predecessors, (8781), 8772 states have call successors, (8781) [2021-11-25 18:21:39,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24844 states to 24844 states and 37279 transitions. [2021-11-25 18:21:39,551 INFO L78 Accepts]: Start accepts. Automaton has 24844 states and 37279 transitions. Word has length 165 [2021-11-25 18:21:39,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:39,552 INFO L470 AbstractCegarLoop]: Abstraction has 24844 states and 37279 transitions. [2021-11-25 18:21:39,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 18:21:39,552 INFO L276 IsEmpty]: Start isEmpty. Operand 24844 states and 37279 transitions. [2021-11-25 18:21:39,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-25 18:21:39,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:39,559 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:39,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:21:39,559 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:21:39,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:39,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1766944042, now seen corresponding path program 1 times [2021-11-25 18:21:39,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:39,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185860496] [2021-11-25 18:21:39,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:39,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-25 18:21:39,902 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:39,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185860496] [2021-11-25 18:21:39,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185860496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:39,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:39,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:21:39,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905537007] [2021-11-25 18:21:39,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:39,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:21:39,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:39,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:21:39,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:39,907 INFO L87 Difference]: Start difference. First operand 24844 states and 37279 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-25 18:21:45,170 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 18:21:46,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:46,939 INFO L93 Difference]: Finished difference Result 70225 states and 105245 transitions. [2021-11-25 18:21:46,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:21:46,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 172 [2021-11-25 18:21:46,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:47,198 INFO L225 Difference]: With dead ends: 70225 [2021-11-25 18:21:47,198 INFO L226 Difference]: Without dead ends: 45408 [2021-11-25 18:21:47,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:47,295 INFO L933 BasicCegarLoop]: 4683 mSDtfsCounter, 3632 mSDsluCounter, 3912 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3632 SdHoareTripleChecker+Valid, 8173 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:47,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3632 Valid, 8173 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 936 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-11-25 18:21:47,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45408 states. [2021-11-25 18:21:50,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45408 to 45337. [2021-11-25 18:21:50,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45337 states, 26871 states have (on average 1.3369803877786461) internal successors, (35926), 28585 states have internal predecessors, (35926), 15942 states have call successors, (15942), 2546 states have call predecessors, (15942), 2521 states have return successors, (15995), 15029 states have call predecessors, (15995), 15938 states have call successors, (15995) [2021-11-25 18:21:50,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45337 states to 45337 states and 67863 transitions. [2021-11-25 18:21:50,421 INFO L78 Accepts]: Start accepts. Automaton has 45337 states and 67863 transitions. Word has length 172 [2021-11-25 18:21:50,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:50,422 INFO L470 AbstractCegarLoop]: Abstraction has 45337 states and 67863 transitions. [2021-11-25 18:21:50,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-25 18:21:50,423 INFO L276 IsEmpty]: Start isEmpty. Operand 45337 states and 67863 transitions. [2021-11-25 18:21:50,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-25 18:21:50,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:50,426 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:50,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:21:50,427 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 18:21:50,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:50,428 INFO L85 PathProgramCache]: Analyzing trace with hash -615425435, now seen corresponding path program 1 times [2021-11-25 18:21:50,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:50,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259255803] [2021-11-25 18:21:50,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:50,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-25 18:21:51,062 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:51,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259255803] [2021-11-25 18:21:51,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259255803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:51,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:51,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:21:51,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246076284] [2021-11-25 18:21:51,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:51,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:21:51,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:51,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:21:51,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:51,064 INFO L87 Difference]: Start difference. First operand 45337 states and 67863 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:21:56,881 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 18:21:59,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:59,051 INFO L93 Difference]: Finished difference Result 133365 states and 200177 transitions. [2021-11-25 18:21:59,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:21:59,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 173 [2021-11-25 18:21:59,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:59,790 INFO L225 Difference]: With dead ends: 133365 [2021-11-25 18:21:59,791 INFO L226 Difference]: Without dead ends: 88055 [2021-11-25 18:21:59,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:59,969 INFO L933 BasicCegarLoop]: 4470 mSDtfsCounter, 3622 mSDsluCounter, 3822 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3622 SdHoareTripleChecker+Valid, 7881 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:59,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3622 Valid, 7881 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 895 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-11-25 18:22:00,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88055 states. [2021-11-25 18:22:04,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88055 to 87950. [2021-11-25 18:22:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87950 states, 52220 states have (on average 1.3382037533512063) internal successors, (69881), 55543 states have internal predecessors, (69881), 30834 states have call successors, (30834), 4975 states have call predecessors, (30834), 4893 states have return successors, (31476), 28988 states have call predecessors, (31476), 30830 states have call successors, (31476) [2021-11-25 18:22:05,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87950 states to 87950 states and 132191 transitions. [2021-11-25 18:22:05,630 INFO L78 Accepts]: Start accepts. Automaton has 87950 states and 132191 transitions. Word has length 173 [2021-11-25 18:22:05,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:05,631 INFO L470 AbstractCegarLoop]: Abstraction has 87950 states and 132191 transitions. [2021-11-25 18:22:05,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:22:05,631 INFO L276 IsEmpty]: Start isEmpty. Operand 87950 states and 132191 transitions. [2021-11-25 18:22:05,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-25 18:22:05,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:05,634 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:05,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:22:05,635 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:22:05,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:05,635 INFO L85 PathProgramCache]: Analyzing trace with hash 901733676, now seen corresponding path program 1 times [2021-11-25 18:22:05,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:05,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597376544] [2021-11-25 18:22:05,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:05,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:05,930 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-25 18:22:05,930 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:05,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597376544] [2021-11-25 18:22:05,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597376544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:05,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:05,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:22:05,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446525816] [2021-11-25 18:22:05,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:05,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:22:05,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:05,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:22:05,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:05,935 INFO L87 Difference]: Start difference. First operand 87950 states and 132191 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:22:12,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:13,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:17,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:17,674 INFO L93 Difference]: Finished difference Result 259155 states and 389627 transitions. [2021-11-25 18:22:17,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:22:17,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 172 [2021-11-25 18:22:17,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:18,886 INFO L225 Difference]: With dead ends: 259155 [2021-11-25 18:22:18,886 INFO L226 Difference]: Without dead ends: 171232 [2021-11-25 18:22:19,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:19,625 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 3871 mSDsluCounter, 3933 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3871 SdHoareTripleChecker+Valid, 7998 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:19,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3871 Valid, 7998 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2021-11-25 18:22:19,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171232 states. [2021-11-25 18:22:29,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171232 to 171174. [2021-11-25 18:22:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171174 states, 101606 states have (on average 1.3378639056748618) internal successors, (135935), 108198 states have internal predecessors, (135935), 60012 states have call successors, (60012), 9716 states have call predecessors, (60012), 9553 states have return successors, (61212), 56333 states have call predecessors, (61212), 60008 states have call successors, (61212) [2021-11-25 18:22:30,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171174 states to 171174 states and 257159 transitions. [2021-11-25 18:22:30,925 INFO L78 Accepts]: Start accepts. Automaton has 171174 states and 257159 transitions. Word has length 172 [2021-11-25 18:22:30,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:30,928 INFO L470 AbstractCegarLoop]: Abstraction has 171174 states and 257159 transitions. [2021-11-25 18:22:30,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:22:30,929 INFO L276 IsEmpty]: Start isEmpty. Operand 171174 states and 257159 transitions. [2021-11-25 18:22:30,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-25 18:22:30,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:30,936 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:30,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:22:30,940 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:22:30,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:30,942 INFO L85 PathProgramCache]: Analyzing trace with hash 586924945, now seen corresponding path program 1 times [2021-11-25 18:22:30,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:30,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481875219] [2021-11-25 18:22:30,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:30,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2021-11-25 18:22:31,236 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:31,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481875219] [2021-11-25 18:22:31,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481875219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:31,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:31,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:22:31,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149870461] [2021-11-25 18:22:31,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:31,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:22:31,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:31,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:22:31,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:31,239 INFO L87 Difference]: Start difference. First operand 171174 states and 257159 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-25 18:22:38,990 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 []