./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-natsemi-natsemi.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_ae954721-576e-46cf-975c-2ac8427eda87/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae954721-576e-46cf-975c-2ac8427eda87/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_ae954721-576e-46cf-975c-2ac8427eda87/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae954721-576e-46cf-975c-2ac8427eda87/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae954721-576e-46cf-975c-2ac8427eda87/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_ae954721-576e-46cf-975c-2ac8427eda87/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 6081258d9228cc20a54c5db1ec40347e5dbacbb2bb40755a07881673d13b875b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:58:12,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:58:12,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:58:12,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:58:12,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:58:12,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:58:12,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:58:12,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:58:12,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:58:12,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:58:12,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:58:12,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:58:12,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:58:12,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:58:12,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:58:12,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:58:12,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:58:12,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:58:12,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:58:12,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:58:12,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:58:12,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:58:12,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:58:12,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:58:12,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:58:12,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:58:12,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:58:12,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:58:12,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:58:12,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:58:12,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:58:12,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:58:12,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:58:12,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:58:12,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:58:12,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:58:12,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:58:12,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:58:12,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:58:12,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:58:12,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:58:12,262 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae954721-576e-46cf-975c-2ac8427eda87/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:58:12,314 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:58:12,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:58:12,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:58:12,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:58:12,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:58:12,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:58:12,317 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:58:12,317 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:58:12,317 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:58:12,317 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:58:12,318 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:58:12,318 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:58:12,318 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:58:12,318 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:58:12,318 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:58:12,319 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:58:12,319 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:58:12,319 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:58:12,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:58:12,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:58:12,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:58:12,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:58:12,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:58:12,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:58:12,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:58:12,322 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:58:12,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:58:12,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:58:12,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:58:12,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:58:12,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:58:12,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:58:12,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:58:12,332 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:58:12,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:58:12,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:58:12,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:58:12,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:58:12,335 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_ae954721-576e-46cf-975c-2ac8427eda87/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae954721-576e-46cf-975c-2ac8427eda87/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6081258d9228cc20a54c5db1ec40347e5dbacbb2bb40755a07881673d13b875b [2021-11-25 19:58:12,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:58:12,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:58:12,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:58:12,699 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:58:12,700 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:58:12,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae954721-576e-46cf-975c-2ac8427eda87/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-25 19:58:12,785 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae954721-576e-46cf-975c-2ac8427eda87/bin/utaipan-eEHZpOm5b7/data/09283cae6/6b3b02da381b4035bd584d4e482a7c7a/FLAG1b6f5d681 [2021-11-25 19:58:14,030 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:58:14,031 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae954721-576e-46cf-975c-2ac8427eda87/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-25 19:58:14,105 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae954721-576e-46cf-975c-2ac8427eda87/bin/utaipan-eEHZpOm5b7/data/09283cae6/6b3b02da381b4035bd584d4e482a7c7a/FLAG1b6f5d681 [2021-11-25 19:58:14,187 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae954721-576e-46cf-975c-2ac8427eda87/bin/utaipan-eEHZpOm5b7/data/09283cae6/6b3b02da381b4035bd584d4e482a7c7a [2021-11-25 19:58:14,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:58:14,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:58:14,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:58:14,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:58:14,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:58:14,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:58:14" (1/1) ... [2021-11-25 19:58:14,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64e5a702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:14, skipping insertion in model container [2021-11-25 19:58:14,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:58:14" (1/1) ... [2021-11-25 19:58:14,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:58:14,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:58:19,317 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_ae954721-576e-46cf-975c-2ac8427eda87/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386207,386220] [2021-11-25 19:58:19,320 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_ae954721-576e-46cf-975c-2ac8427eda87/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386376,386389] [2021-11-25 19:58:19,321 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_ae954721-576e-46cf-975c-2ac8427eda87/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386543,386556] [2021-11-25 19:58:19,322 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_ae954721-576e-46cf-975c-2ac8427eda87/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386711,386724] [2021-11-25 19:58:19,344 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:58:19,414 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:58:19,982 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae954721-576e-46cf-975c-2ac8427eda87/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386207,386220] [2021-11-25 19:58:19,982 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae954721-576e-46cf-975c-2ac8427eda87/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386376,386389] [2021-11-25 19:58:19,983 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_ae954721-576e-46cf-975c-2ac8427eda87/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386543,386556] [2021-11-25 19:58:19,984 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_ae954721-576e-46cf-975c-2ac8427eda87/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[386711,386724] [2021-11-25 19:58:19,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:58:20,366 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:58:20,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20 WrapperNode [2021-11-25 19:58:20,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:58:20,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:58:20,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:58:20,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:58:20,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:20,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:20,826 INFO L137 Inliner]: procedures = 512, calls = 2538, calls flagged for inlining = 248, calls inlined = 216, statements flattened = 5394 [2021-11-25 19:58:20,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:58:20,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:58:20,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:58:20,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:58:20,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:20,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:20,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:20,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:21,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:21,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:21,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:21,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:58:21,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:58:21,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:58:21,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:58:21,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (1/1) ... [2021-11-25 19:58:21,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:58:21,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae954721-576e-46cf-975c-2ac8427eda87/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:58:21,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae954721-576e-46cf-975c-2ac8427eda87/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:58:21,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae954721-576e-46cf-975c-2ac8427eda87/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:58:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure drain_rx [2021-11-25 19:58:21,447 INFO L138 BoogieDeclarations]: Found implementation of procedure drain_rx [2021-11-25 19:58:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-25 19:58:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-25 19:58:21,448 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-25 19:58:21,448 INFO L130 BoogieDeclarations]: Found specification of procedure miiport_write [2021-11-25 19:58:21,448 INFO L138 BoogieDeclarations]: Found implementation of procedure miiport_write [2021-11-25 19:58:21,448 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 19:58:21,448 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 19:58:21,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 19:58:21,449 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 19:58:21,449 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-25 19:58:21,449 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-25 19:58:21,449 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_tx_done [2021-11-25 19:58:21,449 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_tx_done [2021-11-25 19:58:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 19:58:21,450 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 19:58:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:58:21,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:58:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure reinit_rx [2021-11-25 19:58:21,451 INFO L138 BoogieDeclarations]: Found implementation of procedure reinit_rx [2021-11-25 19:58:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 19:58:21,451 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 19:58:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:58:21,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:58:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure reinit_ring [2021-11-25 19:58:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure reinit_ring [2021-11-25 19:58:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-25 19:58:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-25 19:58:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 19:58:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 19:58:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 19:58:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 19:58:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 19:58:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 19:58:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2021-11-25 19:58:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2021-11-25 19:58:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 19:58:21,455 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 19:58:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 19:58:21,455 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 19:58:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 19:58:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 19:58:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 19:58:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 19:58:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 19:58:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 19:58:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 19:58:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 19:58:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure __set_rx_mode [2021-11-25 19:58:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_rx_mode [2021-11-25 19:58:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 19:58:21,460 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 19:58:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-25 19:58:21,460 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-25 19:58:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:58:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 19:58:21,461 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 19:58:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-11-25 19:58:21,461 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-11-25 19:58:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-25 19:58:21,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-25 19:58:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_read [2021-11-25 19:58:21,462 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_read [2021-11-25 19:58:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 19:58:21,462 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 19:58:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_stop_rxtx [2021-11-25 19:58:21,463 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_stop_rxtx [2021-11-25 19:58:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure ns_tx_timeout [2021-11-25 19:58:21,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_tx_timeout [2021-11-25 19:58:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:58:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 19:58:21,464 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 19:58:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-25 19:58:21,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-25 19:58:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_reset [2021-11-25 19:58:21,466 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_reset [2021-11-25 19:58:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:58:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 19:58:21,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 19:58:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:58:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-25 19:58:21,468 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-25 19:58:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 19:58:21,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 19:58:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure move_int_phy [2021-11-25 19:58:21,469 INFO L138 BoogieDeclarations]: Found implementation of procedure move_int_phy [2021-11-25 19:58:21,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:58:21,470 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:58:21,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 19:58:21,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 19:58:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 19:58:21,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 19:58:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 19:58:21,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 19:58:21,472 INFO L130 BoogieDeclarations]: Found specification of procedure enable_wol_mode [2021-11-25 19:58:21,472 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_wol_mode [2021-11-25 19:58:21,472 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_resume [2021-11-25 19:58:21,472 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_resume [2021-11-25 19:58:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-25 19:58:21,473 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-25 19:58:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 19:58:21,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 19:58:21,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:58:21,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 19:58:21,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 19:58:21,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 19:58:21,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 19:58:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-25 19:58:21,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-25 19:58:21,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:58:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure mii_getbit [2021-11-25 19:58:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_getbit [2021-11-25 19:58:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 19:58:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 19:58:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 19:58:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 19:58:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:58:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:58:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:58:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 19:58:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 19:58:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_poll_controller [2021-11-25 19:58:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_poll_controller [2021-11-25 19:58:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 19:58:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 19:58:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure check_link [2021-11-25 19:58:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure check_link [2021-11-25 19:58:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-25 19:58:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-25 19:58:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 19:58:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 19:58:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 19:58:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 19:58:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 19:58:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 19:58:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 19:58:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 19:58:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure init_phy_fixup [2021-11-25 19:58:21,492 INFO L138 BoogieDeclarations]: Found implementation of procedure init_phy_fixup [2021-11-25 19:58:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-25 19:58:21,492 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-25 19:58:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-25 19:58:21,492 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-25 19:58:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure mii_nway_result [2021-11-25 19:58:21,493 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_nway_result [2021-11-25 19:58:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:58:21,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:58:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:58:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:58:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:58:21,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:58:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure switch_port_external [2021-11-25 19:58:21,495 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_port_external [2021-11-25 19:58:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2021-11-25 19:58:21,495 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2021-11-25 19:58:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:58:21,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:58:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 19:58:21,496 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 19:58:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure get_eeprom_len [2021-11-25 19:58:21,496 INFO L138 BoogieDeclarations]: Found implementation of procedure get_eeprom_len [2021-11-25 19:58:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-25 19:58:21,497 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-25 19:58:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2021-11-25 19:58:21,497 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2021-11-25 19:58:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure get_regs_len [2021-11-25 19:58:21,497 INFO L138 BoogieDeclarations]: Found implementation of procedure get_regs_len [2021-11-25 19:58:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 19:58:21,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 19:58:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure nway_reset [2021-11-25 19:58:21,498 INFO L138 BoogieDeclarations]: Found implementation of procedure nway_reset [2021-11-25 19:58:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-25 19:58:21,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-25 19:58:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 19:58:21,498 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 19:58:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-25 19:58:21,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-25 19:58:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2021-11-25 19:58:21,501 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2021-11-25 19:58:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 19:58:21,501 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 19:58:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 19:58:21,502 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 19:58:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies [2021-11-25 19:58:21,502 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies [2021-11-25 19:58:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:58:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure switch_port_internal [2021-11-25 19:58:21,502 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_port_internal [2021-11-25 19:58:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 19:58:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 19:58:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure dump_ring [2021-11-25 19:58:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_ring [2021-11-25 19:58:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:58:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:58:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure intr_handler [2021-11-25 19:58:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_handler [2021-11-25 19:58:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 19:58:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 19:58:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-25 19:58:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-25 19:58:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_68 [2021-11-25 19:58:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_68 [2021-11-25 19:58:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 19:58:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 19:58:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 19:58:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 19:58:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure __get_stats [2021-11-25 19:58:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_stats [2021-11-25 19:58:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure set_bufsize [2021-11-25 19:58:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bufsize [2021-11-25 19:58:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-25 19:58:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-25 19:58:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2021-11-25 19:58:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2021-11-25 19:58:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_84 [2021-11-25 19:58:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_84 [2021-11-25 19:58:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure drain_ring [2021-11-25 19:58:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure drain_ring [2021-11-25 19:58:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 19:58:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 19:58:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 19:58:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 19:58:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-25 19:58:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-25 19:58:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 19:58:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 19:58:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_remove1 [2021-11-25 19:58:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_remove1 [2021-11-25 19:58:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_natsemi_exit_mod_15_2 [2021-11-25 19:58:21,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_natsemi_exit_mod_15_2 [2021-11-25 19:58:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:58:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure init_ring [2021-11-25 19:58:21,515 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ring [2021-11-25 19:58:21,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:58:21,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:58:21,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_85 [2021-11-25 19:58:21,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_85 [2021-11-25 19:58:21,516 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_irq_disable [2021-11-25 19:58:21,516 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_irq_disable [2021-11-25 19:58:21,516 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2021-11-25 19:58:21,516 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2021-11-25 19:58:21,517 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 19:58:21,518 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 19:58:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_69 [2021-11-25 19:58:21,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_69 [2021-11-25 19:58:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 19:58:21,519 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 19:58:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-25 19:58:21,519 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-25 19:58:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure ns_ioaddr [2021-11-25 19:58:21,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_ioaddr [2021-11-25 19:58:21,520 INFO L130 BoogieDeclarations]: Found specification of procedure mii_send_bits [2021-11-25 19:58:21,520 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_send_bits [2021-11-25 19:58:21,520 INFO L130 BoogieDeclarations]: Found specification of procedure refill_rx [2021-11-25 19:58:21,520 INFO L138 BoogieDeclarations]: Found implementation of procedure refill_rx [2021-11-25 19:58:21,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 19:58:21,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 19:58:21,521 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2021-11-25 19:58:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2021-11-25 19:58:21,521 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-25 19:58:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-25 19:58:21,521 INFO L130 BoogieDeclarations]: Found specification of procedure drain_tx [2021-11-25 19:58:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure drain_tx [2021-11-25 19:58:21,521 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_irq_enable [2021-11-25 19:58:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_irq_enable [2021-11-25 19:58:21,522 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 19:58:21,522 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 19:58:21,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:58:21,522 INFO L130 BoogieDeclarations]: Found specification of procedure miiport_read [2021-11-25 19:58:21,522 INFO L138 BoogieDeclarations]: Found implementation of procedure miiport_read [2021-11-25 19:58:21,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 19:58:21,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 19:58:21,523 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-25 19:58:21,523 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-25 19:58:22,866 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:58:22,879 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:58:23,560 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:58:27,489 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 19:58:27,614 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:58:29,709 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:58:29,709 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:58:29,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:58:29 BoogieIcfgContainer [2021-11-25 19:58:29,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:58:29,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:58:29,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:58:29,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:58:29,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:58:14" (1/3) ... [2021-11-25 19:58:29,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46fabbd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:58:29, skipping insertion in model container [2021-11-25 19:58:29,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:20" (2/3) ... [2021-11-25 19:58:29,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46fabbd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:58:29, skipping insertion in model container [2021-11-25 19:58:29,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:58:29" (3/3) ... [2021-11-25 19:58:29,726 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-25 19:58:29,733 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:58:29,733 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 19:58:29,823 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:58:29,841 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:58:29,842 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 19:58:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 1935 states, 1055 states have (on average 1.2654028436018958) internal successors, (1335), 1092 states have internal predecessors, (1335), 749 states have call successors, (749), 129 states have call predecessors, (749), 128 states have return successors, (743), 734 states have call predecessors, (743), 743 states have call successors, (743) [2021-11-25 19:58:29,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-25 19:58:29,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:29,968 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:58:29,969 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:58:29,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:29,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2018338776, now seen corresponding path program 1 times [2021-11-25 19:58:29,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:29,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720803537] [2021-11-25 19:58:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:29,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-11-25 19:58:30,916 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:30,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720803537] [2021-11-25 19:58:30,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720803537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:30,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:58:30,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:58:30,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168109304] [2021-11-25 19:58:30,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:30,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:58:30,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:30,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:58:30,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:58:30,988 INFO L87 Difference]: Start difference. First operand has 1935 states, 1055 states have (on average 1.2654028436018958) internal successors, (1335), 1092 states have internal predecessors, (1335), 749 states have call successors, (749), 129 states have call predecessors, (749), 128 states have return successors, (743), 734 states have call predecessors, (743), 743 states have call successors, (743) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 19:58:35,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:35,190 INFO L93 Difference]: Finished difference Result 5669 states and 8427 transitions. [2021-11-25 19:58:35,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:58:35,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 171 [2021-11-25 19:58:35,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:35,282 INFO L225 Difference]: With dead ends: 5669 [2021-11-25 19:58:35,282 INFO L226 Difference]: Without dead ends: 3755 [2021-11-25 19:58:35,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:58:35,325 INFO L933 BasicCegarLoop]: 3200 mSDtfsCounter, 2692 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2692 SdHoareTripleChecker+Valid, 5664 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:35,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2692 Valid, 5664 Invalid, 669 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 19:58:35,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3755 states. [2021-11-25 19:58:35,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3755 to 3751. [2021-11-25 19:58:35,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 2057 states have (on average 1.261059795819154) internal successors, (2594), 2130 states have internal predecessors, (2594), 1439 states have call successors, (1439), 253 states have call predecessors, (1439), 252 states have return successors, (1435), 1417 states have call predecessors, (1435), 1435 states have call successors, (1435) [2021-11-25 19:58:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5468 transitions. [2021-11-25 19:58:35,911 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5468 transitions. Word has length 171 [2021-11-25 19:58:35,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:35,913 INFO L470 AbstractCegarLoop]: Abstraction has 3751 states and 5468 transitions. [2021-11-25 19:58:35,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 19:58:35,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5468 transitions. [2021-11-25 19:58:35,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-25 19:58:35,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:35,932 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:58:35,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:58:35,933 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:58:35,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:35,935 INFO L85 PathProgramCache]: Analyzing trace with hash 54522437, now seen corresponding path program 1 times [2021-11-25 19:58:35,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:35,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864865835] [2021-11-25 19:58:35,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:35,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-11-25 19:58:36,367 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:36,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864865835] [2021-11-25 19:58:36,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864865835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:36,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:58:36,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:58:36,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592131124] [2021-11-25 19:58:36,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:36,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:58:36,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:36,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:58:36,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:58:36,374 INFO L87 Difference]: Start difference. First operand 3751 states and 5468 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, (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 19:58:40,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:40,459 INFO L93 Difference]: Finished difference Result 10407 states and 15096 transitions. [2021-11-25 19:58:40,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:58:40,461 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, (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 179 [2021-11-25 19:58:40,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:40,543 INFO L225 Difference]: With dead ends: 10407 [2021-11-25 19:58:40,543 INFO L226 Difference]: Without dead ends: 6687 [2021-11-25 19:58:40,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:58:40,577 INFO L933 BasicCegarLoop]: 3068 mSDtfsCounter, 2149 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 5495 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:40,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2149 Valid, 5495 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-25 19:58:40,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6687 states. [2021-11-25 19:58:41,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6687 to 6658. [2021-11-25 19:58:41,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6658 states, 3614 states have (on average 1.2476480354178197) internal successors, (4509), 3750 states have internal predecessors, (4509), 2560 states have call successors, (2560), 486 states have call predecessors, (2560), 481 states have return successors, (2558), 2509 states have call predecessors, (2558), 2556 states have call successors, (2558) [2021-11-25 19:58:41,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6658 states to 6658 states and 9627 transitions. [2021-11-25 19:58:41,158 INFO L78 Accepts]: Start accepts. Automaton has 6658 states and 9627 transitions. Word has length 179 [2021-11-25 19:58:41,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:41,163 INFO L470 AbstractCegarLoop]: Abstraction has 6658 states and 9627 transitions. [2021-11-25 19:58:41,163 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, (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 19:58:41,163 INFO L276 IsEmpty]: Start isEmpty. Operand 6658 states and 9627 transitions. [2021-11-25 19:58:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-25 19:58:41,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:41,169 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:58:41,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:58:41,169 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:58:41,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:41,170 INFO L85 PathProgramCache]: Analyzing trace with hash -770422812, now seen corresponding path program 1 times [2021-11-25 19:58:41,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:41,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145355896] [2021-11-25 19:58:41,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:41,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-11-25 19:58:41,502 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:41,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145355896] [2021-11-25 19:58:41,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145355896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:41,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:58:41,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:58:41,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910773994] [2021-11-25 19:58:41,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:41,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:58:41,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:41,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:58:41,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:58:41,507 INFO L87 Difference]: Start difference. First operand 6658 states and 9627 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 19:58:46,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:48,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:48,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:48,595 INFO L93 Difference]: Finished difference Result 12773 states and 18402 transitions. [2021-11-25 19:58:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:58:48,596 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 181 [2021-11-25 19:58:48,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:48,668 INFO L225 Difference]: With dead ends: 12773 [2021-11-25 19:58:48,669 INFO L226 Difference]: Without dead ends: 6146 [2021-11-25 19:58:48,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:58:48,725 INFO L933 BasicCegarLoop]: 3663 mSDtfsCounter, 1954 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 6105 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:48,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 6105 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-11-25 19:58:48,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6146 states. [2021-11-25 19:58:49,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6146 to 6119. [2021-11-25 19:58:49,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6119 states, 3370 states have (on average 1.2456973293768545) internal successors, (4198), 3488 states have internal predecessors, (4198), 2273 states have call successors, (2273), 478 states have call predecessors, (2273), 473 states have return successors, (2270), 2224 states have call predecessors, (2270), 2269 states have call successors, (2270) [2021-11-25 19:58:49,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6119 states to 6119 states and 8741 transitions. [2021-11-25 19:58:49,370 INFO L78 Accepts]: Start accepts. Automaton has 6119 states and 8741 transitions. Word has length 181 [2021-11-25 19:58:49,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:49,371 INFO L470 AbstractCegarLoop]: Abstraction has 6119 states and 8741 transitions. [2021-11-25 19:58:49,371 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 19:58:49,371 INFO L276 IsEmpty]: Start isEmpty. Operand 6119 states and 8741 transitions. [2021-11-25 19:58:49,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-25 19:58:49,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:49,376 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:58:49,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:58:49,376 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:58:49,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:49,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1213775498, now seen corresponding path program 1 times [2021-11-25 19:58:49,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:49,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101723211] [2021-11-25 19:58:49,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:49,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2021-11-25 19:58:49,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:49,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101723211] [2021-11-25 19:58:49,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101723211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:49,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:58:49,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:58:49,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455756767] [2021-11-25 19:58:49,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:49,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:58:49,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:49,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:58:49,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:58:49,612 INFO L87 Difference]: Start difference. First operand 6119 states and 8741 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 19:58:54,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:54,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:54,555 INFO L93 Difference]: Finished difference Result 16253 states and 23216 transitions. [2021-11-25 19:58:54,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:58:54,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 187 [2021-11-25 19:58:54,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:54,667 INFO L225 Difference]: With dead ends: 16253 [2021-11-25 19:58:54,667 INFO L226 Difference]: Without dead ends: 10165 [2021-11-25 19:58:54,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:58:54,818 INFO L933 BasicCegarLoop]: 3129 mSDtfsCounter, 2657 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2657 SdHoareTripleChecker+Valid, 5458 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:54,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2657 Valid, 5458 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-25 19:58:54,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10165 states. [2021-11-25 19:58:55,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10165 to 10136. [2021-11-25 19:58:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10136 states, 5654 states have (on average 1.25221082419526) internal successors, (7080), 5847 states have internal predecessors, (7080), 3697 states have call successors, (3697), 797 states have call predecessors, (3697), 782 states have return successors, (3702), 3604 states have call predecessors, (3702), 3693 states have call successors, (3702) [2021-11-25 19:58:55,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10136 states to 10136 states and 14479 transitions. [2021-11-25 19:58:55,569 INFO L78 Accepts]: Start accepts. Automaton has 10136 states and 14479 transitions. Word has length 187 [2021-11-25 19:58:55,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:55,570 INFO L470 AbstractCegarLoop]: Abstraction has 10136 states and 14479 transitions. [2021-11-25 19:58:55,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 19:58:55,572 INFO L276 IsEmpty]: Start isEmpty. Operand 10136 states and 14479 transitions. [2021-11-25 19:58:55,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-25 19:58:55,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:55,577 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:58:55,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:58:55,578 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:58:55,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:55,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1769465417, now seen corresponding path program 1 times [2021-11-25 19:58:55,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:55,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658019943] [2021-11-25 19:58:55,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:55,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2021-11-25 19:58:55,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:55,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658019943] [2021-11-25 19:58:55,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658019943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:55,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:58:55,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:58:55,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933645142] [2021-11-25 19:58:55,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:55,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:58:55,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:55,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:58:55,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:58:55,834 INFO L87 Difference]: Start difference. First operand 10136 states and 14479 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-25 19:59:00,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:00,679 INFO L93 Difference]: Finished difference Result 29783 states and 42561 transitions. [2021-11-25 19:59:00,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:59:00,679 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 195 [2021-11-25 19:59:00,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:00,852 INFO L225 Difference]: With dead ends: 29783 [2021-11-25 19:59:00,852 INFO L226 Difference]: Without dead ends: 19678 [2021-11-25 19:59:00,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:59:00,924 INFO L933 BasicCegarLoop]: 3220 mSDtfsCounter, 2687 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 5685 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:00,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2687 Valid, 5685 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-25 19:59:00,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19678 states. [2021-11-25 19:59:02,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19678 to 19637. [2021-11-25 19:59:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19637 states, 10933 states have (on average 1.2488795390103358) internal successors, (13654), 11333 states have internal predecessors, (13654), 7183 states have call successors, (7183), 1547 states have call predecessors, (7183), 1518 states have return successors, (7197), 6982 states have call predecessors, (7197), 7179 states have call successors, (7197) [2021-11-25 19:59:02,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19637 states to 19637 states and 28034 transitions. [2021-11-25 19:59:02,567 INFO L78 Accepts]: Start accepts. Automaton has 19637 states and 28034 transitions. Word has length 195 [2021-11-25 19:59:02,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:02,569 INFO L470 AbstractCegarLoop]: Abstraction has 19637 states and 28034 transitions. [2021-11-25 19:59:02,569 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-25 19:59:02,569 INFO L276 IsEmpty]: Start isEmpty. Operand 19637 states and 28034 transitions. [2021-11-25 19:59:02,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-25 19:59:02,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:02,575 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:02,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:59:02,576 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:59:02,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:02,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1751786339, now seen corresponding path program 1 times [2021-11-25 19:59:02,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:02,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146914239] [2021-11-25 19:59:02,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:02,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 999 trivial. 0 not checked. [2021-11-25 19:59:02,942 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:02,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146914239] [2021-11-25 19:59:02,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146914239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:02,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:02,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:59:02,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993134834] [2021-11-25 19:59:02,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:02,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:59:02,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:02,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:59:02,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:59:02,945 INFO L87 Difference]: Start difference. First operand 19637 states and 28034 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 19:59:08,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:08,360 INFO L93 Difference]: Finished difference Result 19643 states and 28039 transitions. [2021-11-25 19:59:08,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:59:08,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 213 [2021-11-25 19:59:08,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:08,493 INFO L225 Difference]: With dead ends: 19643 [2021-11-25 19:59:08,494 INFO L226 Difference]: Without dead ends: 19641 [2021-11-25 19:59:08,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:59:08,511 INFO L933 BasicCegarLoop]: 2477 mSDtfsCounter, 2743 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2754 SdHoareTripleChecker+Valid, 7418 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:08,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2754 Valid, 7418 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-25 19:59:08,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19641 states. [2021-11-25 19:59:09,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19641 to 19641. [2021-11-25 19:59:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19641 states, 10936 states have (on average 1.248811265544989) internal successors, (13657), 11336 states have internal predecessors, (13657), 7183 states have call successors, (7183), 1548 states have call predecessors, (7183), 1519 states have return successors, (7197), 6982 states have call predecessors, (7197), 7179 states have call successors, (7197) [2021-11-25 19:59:10,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19641 states to 19641 states and 28037 transitions. [2021-11-25 19:59:10,155 INFO L78 Accepts]: Start accepts. Automaton has 19641 states and 28037 transitions. Word has length 213 [2021-11-25 19:59:10,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:10,156 INFO L470 AbstractCegarLoop]: Abstraction has 19641 states and 28037 transitions. [2021-11-25 19:59:10,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 19:59:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 19641 states and 28037 transitions. [2021-11-25 19:59:10,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-25 19:59:10,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:10,164 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:10,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:59:10,165 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:59:10,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:10,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1073752993, now seen corresponding path program 1 times [2021-11-25 19:59:10,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:10,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134782990] [2021-11-25 19:59:10,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:10,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:10,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2021-11-25 19:59:10,766 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:10,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134782990] [2021-11-25 19:59:10,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134782990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:10,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:10,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:59:10,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79357780] [2021-11-25 19:59:10,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:10,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:59:10,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:10,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:59:10,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:59:10,769 INFO L87 Difference]: Start difference. First operand 19641 states and 28037 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 19:59:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:15,512 INFO L93 Difference]: Finished difference Result 19647 states and 28042 transitions. [2021-11-25 19:59:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:59:15,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 221 [2021-11-25 19:59:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:15,656 INFO L225 Difference]: With dead ends: 19647 [2021-11-25 19:59:15,657 INFO L226 Difference]: Without dead ends: 19645 [2021-11-25 19:59:15,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:59:15,672 INFO L933 BasicCegarLoop]: 2480 mSDtfsCounter, 2737 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2747 SdHoareTripleChecker+Valid, 7421 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:15,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2747 Valid, 7421 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-25 19:59:15,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2021-11-25 19:59:17,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 19645. [2021-11-25 19:59:17,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19645 states, 10939 states have (on average 1.2487430295273791) internal successors, (13660), 11339 states have internal predecessors, (13660), 7183 states have call successors, (7183), 1549 states have call predecessors, (7183), 1520 states have return successors, (7197), 6982 states have call predecessors, (7197), 7179 states have call successors, (7197) [2021-11-25 19:59:17,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19645 states to 19645 states and 28040 transitions. [2021-11-25 19:59:17,414 INFO L78 Accepts]: Start accepts. Automaton has 19645 states and 28040 transitions. Word has length 221 [2021-11-25 19:59:17,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:17,416 INFO L470 AbstractCegarLoop]: Abstraction has 19645 states and 28040 transitions. [2021-11-25 19:59:17,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 19:59:17,416 INFO L276 IsEmpty]: Start isEmpty. Operand 19645 states and 28040 transitions. [2021-11-25 19:59:17,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-25 19:59:17,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:17,425 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:17,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:59:17,426 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:59:17,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:17,427 INFO L85 PathProgramCache]: Analyzing trace with hash 14923811, now seen corresponding path program 1 times [2021-11-25 19:59:17,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:17,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180410170] [2021-11-25 19:59:17,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:17,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1003 trivial. 0 not checked. [2021-11-25 19:59:17,786 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:17,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180410170] [2021-11-25 19:59:17,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180410170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:17,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:17,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:59:17,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003333111] [2021-11-25 19:59:17,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:17,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:59:17,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:17,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:59:17,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:59:17,790 INFO L87 Difference]: Start difference. First operand 19645 states and 28040 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 19:59:22,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:22,109 INFO L93 Difference]: Finished difference Result 19651 states and 28045 transitions. [2021-11-25 19:59:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:59:22,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 223 [2021-11-25 19:59:22,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:22,242 INFO L225 Difference]: With dead ends: 19651 [2021-11-25 19:59:22,242 INFO L226 Difference]: Without dead ends: 19649 [2021-11-25 19:59:22,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:59:22,257 INFO L933 BasicCegarLoop]: 2480 mSDtfsCounter, 2738 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2747 SdHoareTripleChecker+Valid, 7421 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:22,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2747 Valid, 7421 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-25 19:59:22,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19649 states. [2021-11-25 19:59:23,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19649 to 19649. [2021-11-25 19:59:23,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19649 states, 10942 states have (on average 1.2486748309267044) internal successors, (13663), 11342 states have internal predecessors, (13663), 7183 states have call successors, (7183), 1550 states have call predecessors, (7183), 1521 states have return successors, (7197), 6982 states have call predecessors, (7197), 7179 states have call successors, (7197) [2021-11-25 19:59:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19649 states to 19649 states and 28043 transitions. [2021-11-25 19:59:24,043 INFO L78 Accepts]: Start accepts. Automaton has 19649 states and 28043 transitions. Word has length 223 [2021-11-25 19:59:24,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:24,044 INFO L470 AbstractCegarLoop]: Abstraction has 19649 states and 28043 transitions. [2021-11-25 19:59:24,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 19:59:24,045 INFO L276 IsEmpty]: Start isEmpty. Operand 19649 states and 28043 transitions. [2021-11-25 19:59:24,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-25 19:59:24,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:24,054 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:24,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:59:24,055 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:59:24,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:24,056 INFO L85 PathProgramCache]: Analyzing trace with hash 548883255, now seen corresponding path program 1 times [2021-11-25 19:59:24,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:24,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454259064] [2021-11-25 19:59:24,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:24,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-25 19:59:24,290 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:24,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454259064] [2021-11-25 19:59:24,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454259064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:24,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:24,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:59:24,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976087149] [2021-11-25 19:59:24,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:24,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:59:24,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:24,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:59:24,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:59:24,295 INFO L87 Difference]: Start difference. First operand 19649 states and 28043 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 19:59:29,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:29,653 INFO L93 Difference]: Finished difference Result 46109 states and 65838 transitions. [2021-11-25 19:59:29,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:59:29,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 228 [2021-11-25 19:59:29,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:29,833 INFO L225 Difference]: With dead ends: 46109 [2021-11-25 19:59:29,834 INFO L226 Difference]: Without dead ends: 26608 [2021-11-25 19:59:29,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:59:29,922 INFO L933 BasicCegarLoop]: 4094 mSDtfsCounter, 1949 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1949 SdHoareTripleChecker+Valid, 6534 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:29,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1949 Valid, 6534 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-25 19:59:29,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26608 states. [2021-11-25 19:59:32,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26608 to 26557. [2021-11-25 19:59:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26557 states, 14868 states have (on average 1.249327414581652) internal successors, (18575), 15398 states have internal predecessors, (18575), 9609 states have call successors, (9609), 2114 states have call predecessors, (9609), 2077 states have return successors, (9623), 9344 states have call predecessors, (9623), 9605 states have call successors, (9623) [2021-11-25 19:59:32,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26557 states to 26557 states and 37807 transitions. [2021-11-25 19:59:32,618 INFO L78 Accepts]: Start accepts. Automaton has 26557 states and 37807 transitions. Word has length 228 [2021-11-25 19:59:32,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:32,619 INFO L470 AbstractCegarLoop]: Abstraction has 26557 states and 37807 transitions. [2021-11-25 19:59:32,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 19:59:32,620 INFO L276 IsEmpty]: Start isEmpty. Operand 26557 states and 37807 transitions. [2021-11-25 19:59:32,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-25 19:59:32,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:32,628 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:32,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:59:32,628 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:59:32,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:32,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1186664916, now seen corresponding path program 1 times [2021-11-25 19:59:32,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:32,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192833095] [2021-11-25 19:59:32,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:32,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:32,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1019 trivial. 0 not checked. [2021-11-25 19:59:32,920 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:32,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192833095] [2021-11-25 19:59:32,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192833095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:32,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:32,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:59:32,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421864498] [2021-11-25 19:59:32,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:32,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:59:32,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:32,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:59:32,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:59:32,924 INFO L87 Difference]: Start difference. First operand 26557 states and 37807 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 19:59:37,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:39,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:39,181 INFO L93 Difference]: Finished difference Result 26563 states and 37812 transitions. [2021-11-25 19:59:39,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:59:39,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 232 [2021-11-25 19:59:39,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:39,337 INFO L225 Difference]: With dead ends: 26563 [2021-11-25 19:59:39,337 INFO L226 Difference]: Without dead ends: 26561 [2021-11-25 19:59:39,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:59:39,356 INFO L933 BasicCegarLoop]: 2480 mSDtfsCounter, 2737 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2745 SdHoareTripleChecker+Valid, 7421 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:39,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2745 Valid, 7421 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-25 19:59:39,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26561 states. [2021-11-25 19:59:41,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26561 to 26561. [2021-11-25 19:59:41,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26561 states, 14871 states have (on average 1.249277116535539) internal successors, (18578), 15401 states have internal predecessors, (18578), 9609 states have call successors, (9609), 2115 states have call predecessors, (9609), 2078 states have return successors, (9623), 9344 states have call predecessors, (9623), 9605 states have call successors, (9623) [2021-11-25 19:59:41,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26561 states to 26561 states and 37810 transitions. [2021-11-25 19:59:41,465 INFO L78 Accepts]: Start accepts. Automaton has 26561 states and 37810 transitions. Word has length 232 [2021-11-25 19:59:41,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:41,466 INFO L470 AbstractCegarLoop]: Abstraction has 26561 states and 37810 transitions. [2021-11-25 19:59:41,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 19:59:41,466 INFO L276 IsEmpty]: Start isEmpty. Operand 26561 states and 37810 transitions. [2021-11-25 19:59:41,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-25 19:59:41,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:41,474 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:41,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:59:41,475 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:59:41,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:41,476 INFO L85 PathProgramCache]: Analyzing trace with hash 897101210, now seen corresponding path program 1 times [2021-11-25 19:59:41,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:41,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805870294] [2021-11-25 19:59:41,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:41,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1031 trivial. 0 not checked. [2021-11-25 19:59:41,770 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:41,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805870294] [2021-11-25 19:59:41,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805870294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:41,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:41,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:59:41,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600594191] [2021-11-25 19:59:41,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:41,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:59:41,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:41,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:59:41,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:59:41,774 INFO L87 Difference]: Start difference. First operand 26561 states and 37810 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 19:59:46,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:46,982 INFO L93 Difference]: Finished difference Result 26567 states and 37815 transitions. [2021-11-25 19:59:46,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:59:46,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 237 [2021-11-25 19:59:46,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:47,160 INFO L225 Difference]: With dead ends: 26567 [2021-11-25 19:59:47,160 INFO L226 Difference]: Without dead ends: 26565 [2021-11-25 19:59:47,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:59:47,180 INFO L933 BasicCegarLoop]: 2480 mSDtfsCounter, 2737 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2744 SdHoareTripleChecker+Valid, 7421 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:47,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2744 Valid, 7421 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-25 19:59:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26565 states. [2021-11-25 19:59:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26565 to 26565. [2021-11-25 19:59:48,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26565 states, 14874 states have (on average 1.2492268387790775) internal successors, (18581), 15404 states have internal predecessors, (18581), 9609 states have call successors, (9609), 2116 states have call predecessors, (9609), 2079 states have return successors, (9623), 9344 states have call predecessors, (9623), 9605 states have call successors, (9623) [2021-11-25 19:59:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26565 states to 26565 states and 37813 transitions. [2021-11-25 19:59:49,049 INFO L78 Accepts]: Start accepts. Automaton has 26565 states and 37813 transitions. Word has length 237 [2021-11-25 19:59:49,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:49,050 INFO L470 AbstractCegarLoop]: Abstraction has 26565 states and 37813 transitions. [2021-11-25 19:59:49,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 19:59:49,051 INFO L276 IsEmpty]: Start isEmpty. Operand 26565 states and 37813 transitions. [2021-11-25 19:59:49,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-25 19:59:49,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:49,059 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:49,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:59:49,060 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:59:49,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:49,061 INFO L85 PathProgramCache]: Analyzing trace with hash 954358699, now seen corresponding path program 1 times [2021-11-25 19:59:49,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:49,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879135527] [2021-11-25 19:59:49,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:49,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:49,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1049 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1039 trivial. 0 not checked. [2021-11-25 19:59:49,351 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:49,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879135527] [2021-11-25 19:59:49,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879135527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:49,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:49,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:59:49,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096531890] [2021-11-25 19:59:49,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:49,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:59:49,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:49,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:59:49,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:59:49,355 INFO L87 Difference]: Start difference. First operand 26565 states and 37813 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 19:59:54,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:54,084 INFO L93 Difference]: Finished difference Result 26571 states and 37818 transitions. [2021-11-25 19:59:54,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:59:54,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 238 [2021-11-25 19:59:54,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:54,201 INFO L225 Difference]: With dead ends: 26571 [2021-11-25 19:59:54,201 INFO L226 Difference]: Without dead ends: 26569 [2021-11-25 19:59:54,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:59:54,214 INFO L933 BasicCegarLoop]: 2480 mSDtfsCounter, 2738 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2744 SdHoareTripleChecker+Valid, 7421 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:54,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2744 Valid, 7421 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 19:59:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26569 states. [2021-11-25 19:59:55,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26569 to 26569. [2021-11-25 19:59:55,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26569 states, 14877 states have (on average 1.2491765812999933) internal successors, (18584), 15407 states have internal predecessors, (18584), 9609 states have call successors, (9609), 2117 states have call predecessors, (9609), 2080 states have return successors, (9623), 9344 states have call predecessors, (9623), 9605 states have call successors, (9623) [2021-11-25 19:59:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26569 states to 26569 states and 37816 transitions. [2021-11-25 19:59:55,961 INFO L78 Accepts]: Start accepts. Automaton has 26569 states and 37816 transitions. Word has length 238 [2021-11-25 19:59:55,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:55,963 INFO L470 AbstractCegarLoop]: Abstraction has 26569 states and 37816 transitions. [2021-11-25 19:59:55,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 19:59:55,963 INFO L276 IsEmpty]: Start isEmpty. Operand 26569 states and 37816 transitions. [2021-11-25 19:59:55,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-25 19:59:55,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:55,972 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 7, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:55,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:59:55,973 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:59:55,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:55,974 INFO L85 PathProgramCache]: Analyzing trace with hash -556562022, now seen corresponding path program 1 times [2021-11-25 19:59:55,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:55,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011088886] [2021-11-25 19:59:55,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:55,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:56,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2021-11-25 19:59:56,565 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:56,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011088886] [2021-11-25 19:59:56,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011088886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:56,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:56,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:59:56,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280133446] [2021-11-25 19:59:56,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:56,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:59:56,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:56,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:59:56,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:59:56,568 INFO L87 Difference]: Start difference. First operand 26569 states and 37816 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 20:00:02,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:00:02,172 INFO L93 Difference]: Finished difference Result 31147 states and 43613 transitions. [2021-11-25 20:00:02,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:00:02,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 247 [2021-11-25 20:00:02,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:02,289 INFO L225 Difference]: With dead ends: 31147 [2021-11-25 20:00:02,289 INFO L226 Difference]: Without dead ends: 31145 [2021-11-25 20:00:02,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:00:02,307 INFO L933 BasicCegarLoop]: 2778 mSDtfsCounter, 2052 mSDsluCounter, 7522 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2057 SdHoareTripleChecker+Valid, 9498 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:00:02,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2057 Valid, 9498 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-25 20:00:02,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31145 states. [2021-11-25 20:00:04,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31145 to 31145. [2021-11-25 20:00:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31145 states, 17288 states have (on average 1.2350185099490976) internal successors, (21351), 17870 states have internal predecessors, (21351), 11123 states have call successors, (11123), 2768 states have call predecessors, (11123), 2731 states have return successors, (11137), 10858 states have call predecessors, (11137), 11119 states have call successors, (11137) [2021-11-25 20:00:04,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31145 states to 31145 states and 43611 transitions. [2021-11-25 20:00:04,279 INFO L78 Accepts]: Start accepts. Automaton has 31145 states and 43611 transitions. Word has length 247 [2021-11-25 20:00:04,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:04,280 INFO L470 AbstractCegarLoop]: Abstraction has 31145 states and 43611 transitions. [2021-11-25 20:00:04,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 20:00:04,280 INFO L276 IsEmpty]: Start isEmpty. Operand 31145 states and 43611 transitions. [2021-11-25 20:00:04,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-25 20:00:04,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:04,290 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 8, 7, 7, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:00:04,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 20:00:04,290 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:00:04,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:04,291 INFO L85 PathProgramCache]: Analyzing trace with hash 267137377, now seen corresponding path program 1 times [2021-11-25 20:00:04,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:00:04,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781837426] [2021-11-25 20:00:04,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:00:04,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:00:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:00:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-11-25 20:00:04,605 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:00:04,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781837426] [2021-11-25 20:00:04,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781837426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:00:04,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:00:04,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:00:04,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346082422] [2021-11-25 20:00:04,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:00:04,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:00:04,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:00:04,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:00:04,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:00:04,609 INFO L87 Difference]: Start difference. First operand 31145 states and 43611 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 20:00:09,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:10,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:00:10,391 INFO L93 Difference]: Finished difference Result 31151 states and 43616 transitions. [2021-11-25 20:00:10,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:00:10,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 251 [2021-11-25 20:00:10,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:10,516 INFO L225 Difference]: With dead ends: 31151 [2021-11-25 20:00:10,516 INFO L226 Difference]: Without dead ends: 31149 [2021-11-25 20:00:10,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:00:10,531 INFO L933 BasicCegarLoop]: 2480 mSDtfsCounter, 2737 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2741 SdHoareTripleChecker+Valid, 7421 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:00:10,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2741 Valid, 7421 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-25 20:00:10,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31149 states. [2021-11-25 20:00:12,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31149 to 31149. [2021-11-25 20:00:12,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31149 states, 17291 states have (on average 1.234977734081314) internal successors, (21354), 17873 states have internal predecessors, (21354), 11123 states have call successors, (11123), 2769 states have call predecessors, (11123), 2732 states have return successors, (11137), 10858 states have call predecessors, (11137), 11119 states have call successors, (11137) [2021-11-25 20:00:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31149 states to 31149 states and 43614 transitions. [2021-11-25 20:00:12,424 INFO L78 Accepts]: Start accepts. Automaton has 31149 states and 43614 transitions. Word has length 251 [2021-11-25 20:00:12,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:12,425 INFO L470 AbstractCegarLoop]: Abstraction has 31149 states and 43614 transitions. [2021-11-25 20:00:12,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 20:00:12,425 INFO L276 IsEmpty]: Start isEmpty. Operand 31149 states and 43614 transitions. [2021-11-25 20:00:12,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-25 20:00:12,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:12,432 INFO L514 BasicCegarLoop]: trace histogram [20, 15, 15, 15, 15, 15, 15, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:00:12,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 20:00:12,433 INFO L402 AbstractCegarLoop]: === Iteration 15 === 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 20:00:12,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:12,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1263152662, now seen corresponding path program 1 times [2021-11-25 20:00:12,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:00:12,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062235103] [2021-11-25 20:00:12,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:00:12,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:00:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:00:12,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-11-25 20:00:12,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:00:12,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062235103] [2021-11-25 20:00:12,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062235103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:00:12,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:00:12,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:00:12,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184177437] [2021-11-25 20:00:12,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:00:12,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:00:12,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:00:12,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:00:12,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:00:12,645 INFO L87 Difference]: Start difference. First operand 31149 states and 43614 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-25 20:00:18,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:00:18,808 INFO L93 Difference]: Finished difference Result 77426 states and 108435 transitions. [2021-11-25 20:00:18,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:00:18,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 252 [2021-11-25 20:00:18,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:19,007 INFO L225 Difference]: With dead ends: 77426 [2021-11-25 20:00:19,007 INFO L226 Difference]: Without dead ends: 46425 [2021-11-25 20:00:19,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:00:19,099 INFO L933 BasicCegarLoop]: 4859 mSDtfsCounter, 2687 mSDsluCounter, 2777 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 7322 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:00:19,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2687 Valid, 7322 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-25 20:00:19,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46425 states. [2021-11-25 20:00:21,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46425 to 46344. [2021-11-25 20:00:21,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46344 states, 25696 states have (on average 1.2342387920298878) internal successors, (31715), 26580 states have internal predecessors, (31715), 16571 states have call successors, (16571), 4129 states have call predecessors, (16571), 4074 states have return successors, (16594), 16162 states have call predecessors, (16594), 16567 states have call successors, (16594) [2021-11-25 20:00:22,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46344 states to 46344 states and 64880 transitions. [2021-11-25 20:00:22,060 INFO L78 Accepts]: Start accepts. Automaton has 46344 states and 64880 transitions. Word has length 252 [2021-11-25 20:00:22,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:22,061 INFO L470 AbstractCegarLoop]: Abstraction has 46344 states and 64880 transitions. [2021-11-25 20:00:22,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-25 20:00:22,062 INFO L276 IsEmpty]: Start isEmpty. Operand 46344 states and 64880 transitions. [2021-11-25 20:00:22,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-25 20:00:22,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:22,069 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 9, 8, 8, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:00:22,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 20:00:22,070 INFO L402 AbstractCegarLoop]: === Iteration 16 === 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 20:00:22,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:22,070 INFO L85 PathProgramCache]: Analyzing trace with hash -876800614, now seen corresponding path program 1 times [2021-11-25 20:00:22,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:00:22,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060416292] [2021-11-25 20:00:22,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:00:22,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:00:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:00:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1119 trivial. 0 not checked. [2021-11-25 20:00:22,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:00:22,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060416292] [2021-11-25 20:00:22,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060416292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:00:22,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:00:22,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:00:22,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144249064] [2021-11-25 20:00:22,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:00:22,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:00:22,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:00:22,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:00:22,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:00:22,356 INFO L87 Difference]: Start difference. First operand 46344 states and 64880 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-25 20:00:27,852 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 20:00:30,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:00:30,233 INFO L93 Difference]: Finished difference Result 46350 states and 64885 transitions. [2021-11-25 20:00:30,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:00:30,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 257 [2021-11-25 20:00:30,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:30,460 INFO L225 Difference]: With dead ends: 46350 [2021-11-25 20:00:30,461 INFO L226 Difference]: Without dead ends: 46348 [2021-11-25 20:00:30,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:00:30,482 INFO L933 BasicCegarLoop]: 2480 mSDtfsCounter, 2737 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2740 SdHoareTripleChecker+Valid, 7421 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:00:30,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2740 Valid, 7421 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 984 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-11-25 20:00:30,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46348 states. [2021-11-25 20:00:33,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46348 to 46348. [2021-11-25 20:00:33,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46348 states, 25699 states have (on average 1.2342114479162614) internal successors, (31718), 26583 states have internal predecessors, (31718), 16571 states have call successors, (16571), 4130 states have call predecessors, (16571), 4075 states have return successors, (16594), 16162 states have call predecessors, (16594), 16567 states have call successors, (16594) [2021-11-25 20:00:33,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46348 states to 46348 states and 64883 transitions. [2021-11-25 20:00:33,731 INFO L78 Accepts]: Start accepts. Automaton has 46348 states and 64883 transitions. Word has length 257 [2021-11-25 20:00:33,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:33,732 INFO L470 AbstractCegarLoop]: Abstraction has 46348 states and 64883 transitions. [2021-11-25 20:00:33,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-25 20:00:33,733 INFO L276 IsEmpty]: Start isEmpty. Operand 46348 states and 64883 transitions. [2021-11-25 20:00:33,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-25 20:00:33,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:33,740 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 10, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:00:33,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 20:00:33,741 INFO L402 AbstractCegarLoop]: === Iteration 17 === 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 20:00:33,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:33,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1058029269, now seen corresponding path program 1 times [2021-11-25 20:00:33,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:00:33,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825479917] [2021-11-25 20:00:33,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:00:33,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:00:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:00:34,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1143 trivial. 0 not checked. [2021-11-25 20:00:34,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:00:34,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825479917] [2021-11-25 20:00:34,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825479917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:00:34,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:00:34,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:00:34,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591651139] [2021-11-25 20:00:34,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:00:34,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:00:34,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:00:34,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:00:34,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:00:34,010 INFO L87 Difference]: Start difference. First operand 46348 states and 64883 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33)