./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-via-via-rhine.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f960bd0-6e77-40bf-8a5c-b958f1f27040/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f960bd0-6e77-40bf-8a5c-b958f1f27040/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f960bd0-6e77-40bf-8a5c-b958f1f27040/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f960bd0-6e77-40bf-8a5c-b958f1f27040/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f960bd0-6e77-40bf-8a5c-b958f1f27040/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f960bd0-6e77-40bf-8a5c-b958f1f27040/bin/utaipan-7li7fVZpFI --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 6eed6410a0dd7e708ffb27250b590aa2913bf9f742c15130caf6eadad29510cc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:14:20,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:14:20,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:14:20,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:14:20,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:14:20,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:14:20,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:14:20,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:14:20,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:14:20,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:14:20,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:14:20,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:14:20,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:14:20,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:14:20,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:14:20,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:14:20,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:14:20,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:14:20,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:14:20,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:14:20,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:14:20,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:14:20,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:14:20,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:14:20,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:14:20,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:14:20,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:14:20,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:14:20,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:14:20,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:14:20,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:14:20,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:14:20,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:14:20,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:14:20,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:14:20,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:14:20,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:14:20,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:14:20,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:14:20,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:14:20,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:14:20,518 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f960bd0-6e77-40bf-8a5c-b958f1f27040/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:14:20,545 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:14:20,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:14:20,545 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:14:20,546 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:14:20,546 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:14:20,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:14:20,547 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:14:20,547 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:14:20,547 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:14:20,547 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:14:20,548 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:14:20,548 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:14:20,548 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:14:20,548 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:14:20,548 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:14:20,549 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:14:20,549 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:14:20,549 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:14:20,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:14:20,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:14:20,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:14:20,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:14:20,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:14:20,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:14:20,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:14:20,551 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:14:20,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:14:20,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:14:20,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:14:20,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:20,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:14:20,552 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:14:20,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:14:20,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:14:20,553 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:14:20,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:14:20,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:14:20,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:14:20,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f960bd0-6e77-40bf-8a5c-b958f1f27040/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f960bd0-6e77-40bf-8a5c-b958f1f27040/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6eed6410a0dd7e708ffb27250b590aa2913bf9f742c15130caf6eadad29510cc [2022-11-03 02:14:20,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:14:20,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:14:20,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:14:20,820 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:14:20,821 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:14:20,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f960bd0-6e77-40bf-8a5c-b958f1f27040/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-03 02:14:20,909 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f960bd0-6e77-40bf-8a5c-b958f1f27040/bin/utaipan-7li7fVZpFI/data/290794d91/0925920aa1a246af918575cb9167f44b/FLAGb0165b802 [2022-11-03 02:14:21,829 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:14:21,830 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f960bd0-6e77-40bf-8a5c-b958f1f27040/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-03 02:14:21,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f960bd0-6e77-40bf-8a5c-b958f1f27040/bin/utaipan-7li7fVZpFI/data/290794d91/0925920aa1a246af918575cb9167f44b/FLAGb0165b802 [2022-11-03 02:14:22,348 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f960bd0-6e77-40bf-8a5c-b958f1f27040/bin/utaipan-7li7fVZpFI/data/290794d91/0925920aa1a246af918575cb9167f44b [2022-11-03 02:14:22,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:14:22,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:14:22,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:22,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:14:22,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:14:22,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:22" (1/1) ... [2022-11-03 02:14:22,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@752bdd40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:22, skipping insertion in model container [2022-11-03 02:14:22,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:22" (1/1) ... [2022-11-03 02:14:22,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:14:22,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:14:26,378 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_3f960bd0-6e77-40bf-8a5c-b958f1f27040/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404089,404102] [2022-11-03 02:14:26,381 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_3f960bd0-6e77-40bf-8a5c-b958f1f27040/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404258,404271] [2022-11-03 02:14:26,382 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_3f960bd0-6e77-40bf-8a5c-b958f1f27040/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404425,404438] [2022-11-03 02:14:26,383 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_3f960bd0-6e77-40bf-8a5c-b958f1f27040/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404593,404606] [2022-11-03 02:14:26,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:26,495 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:14:26,939 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_3f960bd0-6e77-40bf-8a5c-b958f1f27040/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404089,404102] [2022-11-03 02:14:26,939 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_3f960bd0-6e77-40bf-8a5c-b958f1f27040/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404258,404271] [2022-11-03 02:14:26,940 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_3f960bd0-6e77-40bf-8a5c-b958f1f27040/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404425,404438] [2022-11-03 02:14:26,940 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_3f960bd0-6e77-40bf-8a5c-b958f1f27040/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404593,404606] [2022-11-03 02:14:26,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:27,237 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:14:27,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:27 WrapperNode [2022-11-03 02:14:27,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:27,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:27,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:14:27,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:14:27,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:27" (1/1) ... [2022-11-03 02:14:27,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:27" (1/1) ... [2022-11-03 02:14:27,594 INFO L138 Inliner]: procedures = 559, calls = 2801, calls flagged for inlining = 291, calls inlined = 253, statements flattened = 5819 [2022-11-03 02:14:27,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:27,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:14:27,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:14:27,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:14:27,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:27" (1/1) ... [2022-11-03 02:14:27,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:27" (1/1) ... [2022-11-03 02:14:27,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:27" (1/1) ... [2022-11-03 02:14:27,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:27" (1/1) ... [2022-11-03 02:14:27,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:27" (1/1) ... [2022-11-03 02:14:27,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:27" (1/1) ... [2022-11-03 02:14:27,821 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:27" (1/1) ... [2022-11-03 02:14:27,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:27" (1/1) ... [2022-11-03 02:14:27,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:14:27,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:14:27,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:14:27,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:14:27,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:27" (1/1) ... [2022-11-03 02:14:27,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:27,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f960bd0-6e77-40bf-8a5c-b958f1f27040/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:27,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f960bd0-6e77-40bf-8a5c-b958f1f27040/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:14:27,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f960bd0-6e77-40bf-8a5c-b958f1f27040/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:14:27,946 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:14:27,947 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:14:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:14:27,947 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:14:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-03 02:14:27,947 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-03 02:14:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:14:27,948 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:14:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:14:27,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:14:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 02:14:27,948 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 02:14:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:14:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:14:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure free_tbufs [2022-11-03 02:14:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tbufs [2022-11-03 02:14:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_80 [2022-11-03 02:14:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_80 [2022-11-03 02:14:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-03 02:14:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-03 02:14:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:14:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:14:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-03 02:14:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-03 02:14:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:14:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:14:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-03 02:14:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-03 02:14:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_poll [2022-11-03 02:14:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_poll [2022-11-03 02:14:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-03 02:14:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-03 02:14:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 02:14:27,952 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 02:14:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_low [2022-11-03 02:14:27,952 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_low [2022-11-03 02:14:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:14:27,952 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:14:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:14:27,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:14:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:14:27,953 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:14:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 02:14:27,953 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 02:14:27,954 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:14:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:14:27,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:14:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:14:27,954 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 02:14:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 02:14:27,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:14:27,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_62 [2022-11-03 02:14:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_62 [2022-11-03 02:14:27,955 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-03 02:14:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-03 02:14:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit [2022-11-03 02:14:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit [2022-11-03 02:14:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:14:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:14:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:14:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:14:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_rbufs [2022-11-03 02:14:27,957 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_rbufs [2022-11-03 02:14:28,020 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:14:28,020 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:14:28,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:14:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:14:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:14:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_interrupt [2022-11-03 02:14:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_interrupt [2022-11-03 02:14:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:14:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:14:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:14:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:14:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:14:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:14:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:14:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_disable [2022-11-03 02:14:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_disable [2022-11-03 02:14:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-11-03 02:14:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-11-03 02:14:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 02:14:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 02:14:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:14:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:14:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_carrier [2022-11-03 02:14:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_carrier [2022-11-03 02:14:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:14:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:14:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_shutdown [2022-11-03 02:14:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_shutdown [2022-11-03 02:14:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:14:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 02:14:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 02:14:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:14:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:14:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-03 02:14:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-03 02:14:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-03 02:14:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-03 02:14:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:14:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2022-11-03 02:14:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2022-11-03 02:14:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:14:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:14:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:14:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:14:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:14:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:14:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-03 02:14:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-03 02:14:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:14:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:14:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_rx_mode [2022-11-03 02:14:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_rx_mode [2022-11-03 02:14:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:14:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:14:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_rx_crc_and_missed_errord [2022-11-03 02:14:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_rx_crc_and_missed_errord [2022-11-03 02:14:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-03 02:14:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-03 02:14:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rhine_private [2022-11-03 02:14:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rhine_private [2022-11-03 02:14:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 02:14:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 02:14:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-03 02:14:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-03 02:14:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:14:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:14:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:14:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:14:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2022-11-03 02:14:28,027 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2022-11-03 02:14:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:14:28,027 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:14:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_68 [2022-11-03 02:14:28,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_68 [2022-11-03 02:14:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_power_init [2022-11-03 02:14:28,027 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_power_init [2022-11-03 02:14:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_tx_timeout [2022-11-03 02:14:28,027 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_tx_timeout [2022-11-03 02:14:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rhine_private [2022-11-03 02:14:28,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rhine_private [2022-11-03 02:14:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-03 02:14:28,028 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-03 02:14:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:14:28,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:14:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:14:28,028 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:14:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:14:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:14:28,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:14:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:14:28,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:14:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 02:14:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_chip_reset [2022-11-03 02:14:28,029 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_chip_reset [2022-11-03 02:14:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:14:28,031 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:14:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 02:14:28,031 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 02:14:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:14:28,031 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:14:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_cam_mask [2022-11-03 02:14:28,032 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_cam_mask [2022-11-03 02:14:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2022-11-03 02:14:28,032 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2022-11-03 02:14:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:14:28,032 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:14:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_remove_one [2022-11-03 02:14:28,033 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_remove_one [2022-11-03 02:14:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-03 02:14:28,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-03 02:14:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-03 02:14:28,033 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-03 02:14:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_close [2022-11-03 02:14:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_close [2022-11-03 02:14:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_79 [2022-11-03 02:14:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_79 [2022-11-03 02:14:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:14:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:14:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:14:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:14:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:14:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:14:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:14:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:14:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_check_media [2022-11-03 02:14:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_check_media [2022-11-03 02:14:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2022-11-03 02:14:28,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2022-11-03 02:14:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:14:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure free_rbufs [2022-11-03 02:14:28,036 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rbufs [2022-11-03 02:14:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_get_events [2022-11-03 02:14:28,037 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_get_events [2022-11-03 02:14:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 02:14:28,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 02:14:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-03 02:14:28,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-03 02:14:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure enable_mmio [2022-11-03 02:14:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_mmio [2022-11-03 02:14:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_vlan_cam_mask [2022-11-03 02:14:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_vlan_cam_mask [2022-11-03 02:14:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-03 02:14:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-03 02:14:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 02:14:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 02:14:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:14:28,039 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:14:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-03 02:14:28,039 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-03 02:14:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:14:28,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:14:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 02:14:28,040 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 02:14:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 02:14:28,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 02:14:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:14:28,040 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:14:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:14:28,041 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:14:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_63 [2022-11-03 02:14:28,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_63 [2022-11-03 02:14:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_disable_linkmon [2022-11-03 02:14:28,041 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_disable_linkmon [2022-11-03 02:14:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_ack_events [2022-11-03 02:14:28,042 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_ack_events [2022-11-03 02:14:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:14:28,042 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:14:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_resume [2022-11-03 02:14:28,042 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_resume [2022-11-03 02:14:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:14:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_67 [2022-11-03 02:14:28,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_67 [2022-11-03 02:14:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:14:28,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:14:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2022-11-03 02:14:28,043 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2022-11-03 02:14:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 02:14:28,044 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 02:14:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_high [2022-11-03 02:14:28,044 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_high [2022-11-03 02:14:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_irq_disable [2022-11-03 02:14:28,044 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_irq_disable [2022-11-03 02:14:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_enable [2022-11-03 02:14:28,045 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_enable [2022-11-03 02:14:28,045 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_tbufs [2022-11-03 02:14:28,045 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_tbufs [2022-11-03 02:14:28,045 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-03 02:14:28,045 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-03 02:14:28,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:14:28,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:14:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 02:14:28,046 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 02:14:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 02:14:28,046 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 02:14:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_enable_linkmon [2022-11-03 02:14:28,046 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_enable_linkmon [2022-11-03 02:14:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_vcam [2022-11-03 02:14:28,047 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_vcam [2022-11-03 02:14:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:14:28,047 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:14:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-03 02:14:28,047 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-03 02:14:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:14:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_suspend [2022-11-03 02:14:28,048 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_suspend [2022-11-03 02:14:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_open [2022-11-03 02:14:28,048 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_open [2022-11-03 02:14:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:14:28,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:14:28,987 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:14:28,991 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:14:29,178 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:23:49,588 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:23:49,678 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:23:52,788 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:23:52,788 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-03 02:23:52,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:23:52 BoogieIcfgContainer [2022-11-03 02:23:52,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:23:52,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:23:52,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:23:52,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:23:52,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:14:22" (1/3) ... [2022-11-03 02:23:52,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630a0fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:23:52, skipping insertion in model container [2022-11-03 02:23:52,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:27" (2/3) ... [2022-11-03 02:23:52,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630a0fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:23:52, skipping insertion in model container [2022-11-03 02:23:52,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:23:52" (3/3) ... [2022-11-03 02:23:52,801 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-03 02:23:52,820 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:23:52,820 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 02:23:52,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:23:52,937 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@48a8456d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:23:52,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:23:52,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 1684 states, 951 states have (on average 1.3112513144058886) internal successors, (1247), 1000 states have internal predecessors, (1247), 604 states have call successors, (604), 128 states have call predecessors, (604), 127 states have return successors, (595), 582 states have call predecessors, (595), 595 states have call successors, (595) [2022-11-03 02:23:52,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-03 02:23:52,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:52,986 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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] [2022-11-03 02:23:52,986 INFO L420 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)] === [2022-11-03 02:23:52,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:52,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2035151434, now seen corresponding path program 1 times [2022-11-03 02:23:53,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:53,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748504803] [2022-11-03 02:23:53,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:53,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2022-11-03 02:23:55,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:55,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748504803] [2022-11-03 02:23:55,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748504803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:55,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:55,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:23:55,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126144524] [2022-11-03 02:23:55,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:55,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:23:55,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:55,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:23:55,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:55,985 INFO L87 Difference]: Start difference. First operand has 1684 states, 951 states have (on average 1.3112513144058886) internal successors, (1247), 1000 states have internal predecessors, (1247), 604 states have call successors, (604), 128 states have call predecessors, (604), 127 states have return successors, (595), 582 states have call predecessors, (595), 595 states have call successors, (595) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 02:23:58,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:03,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:03,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:03,674 INFO L93 Difference]: Finished difference Result 4901 states and 7279 transitions. [2022-11-03 02:24:03,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:24:03,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 165 [2022-11-03 02:24:03,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:03,726 INFO L225 Difference]: With dead ends: 4901 [2022-11-03 02:24:03,726 INFO L226 Difference]: Without dead ends: 3233 [2022-11-03 02:24:03,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:24:03,746 INFO L413 NwaCegarLoop]: 2631 mSDtfsCounter, 2301 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 4674 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:03,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 4674 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 720 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 02:24:03,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2022-11-03 02:24:04,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 3229. [2022-11-03 02:24:04,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3229 states, 1836 states have (on average 1.3044662309368191) internal successors, (2395), 1931 states have internal predecessors, (2395), 1140 states have call successors, (1140), 251 states have call predecessors, (1140), 250 states have return successors, (1136), 1110 states have call predecessors, (1136), 1136 states have call successors, (1136) [2022-11-03 02:24:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3229 states to 3229 states and 4671 transitions. [2022-11-03 02:24:04,085 INFO L78 Accepts]: Start accepts. Automaton has 3229 states and 4671 transitions. Word has length 165 [2022-11-03 02:24:04,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:04,088 INFO L495 AbstractCegarLoop]: Abstraction has 3229 states and 4671 transitions. [2022-11-03 02:24:04,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 02:24:04,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3229 states and 4671 transitions. [2022-11-03 02:24:04,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-03 02:24:04,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:04,107 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:04,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:24:04,108 INFO L420 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)] === [2022-11-03 02:24:04,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:04,109 INFO L85 PathProgramCache]: Analyzing trace with hash -658676959, now seen corresponding path program 1 times [2022-11-03 02:24:04,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:04,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840320558] [2022-11-03 02:24:04,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:04,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:05,866 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-11-03 02:24:05,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:05,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840320558] [2022-11-03 02:24:05,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840320558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:05,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:05,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:24:05,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539217158] [2022-11-03 02:24:05,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:05,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:24:05,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:05,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:24:05,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:24:05,879 INFO L87 Difference]: Start difference. First operand 3229 states and 4671 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 02:24:08,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:13,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:13,356 INFO L93 Difference]: Finished difference Result 9107 states and 13119 transitions. [2022-11-03 02:24:13,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:24:13,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 169 [2022-11-03 02:24:13,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:13,406 INFO L225 Difference]: With dead ends: 9107 [2022-11-03 02:24:13,406 INFO L226 Difference]: Without dead ends: 5907 [2022-11-03 02:24:13,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:24:13,427 INFO L413 NwaCegarLoop]: 2548 mSDtfsCounter, 1960 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1960 SdHoareTripleChecker+Valid, 4555 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:13,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1960 Valid, 4555 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 735 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-11-03 02:24:13,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5907 states. [2022-11-03 02:24:13,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5907 to 5878. [2022-11-03 02:24:13,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5878 states, 3331 states have (on average 1.2957069948964275) internal successors, (4316), 3511 states have internal predecessors, (4316), 2065 states have call successors, (2065), 482 states have call predecessors, (2065), 479 states have return successors, (2063), 2002 states have call predecessors, (2063), 2061 states have call successors, (2063) [2022-11-03 02:24:13,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 8444 transitions. [2022-11-03 02:24:13,891 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 8444 transitions. Word has length 169 [2022-11-03 02:24:13,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:13,894 INFO L495 AbstractCegarLoop]: Abstraction has 5878 states and 8444 transitions. [2022-11-03 02:24:13,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 02:24:13,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 8444 transitions. [2022-11-03 02:24:13,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-03 02:24:13,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:13,901 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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] [2022-11-03 02:24:13,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:24:13,904 INFO L420 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)] === [2022-11-03 02:24:13,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:13,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1072181144, now seen corresponding path program 1 times [2022-11-03 02:24:13,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:13,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521636933] [2022-11-03 02:24:13,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:13,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:18,385 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2022-11-03 02:24:18,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:18,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521636933] [2022-11-03 02:24:18,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521636933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:18,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:18,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:18,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680164316] [2022-11-03 02:24:18,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:18,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:18,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:18,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:18,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:18,388 INFO L87 Difference]: Start difference. First operand 5878 states and 8444 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 02:24:20,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:36,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:36,307 INFO L93 Difference]: Finished difference Result 15089 states and 21601 transitions. [2022-11-03 02:24:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:24:36,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 181 [2022-11-03 02:24:36,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:36,372 INFO L225 Difference]: With dead ends: 15089 [2022-11-03 02:24:36,372 INFO L226 Difference]: Without dead ends: 9240 [2022-11-03 02:24:36,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:36,406 INFO L413 NwaCegarLoop]: 3270 mSDtfsCounter, 5970 mSDsluCounter, 4876 mSDsCounter, 0 mSdLazyCounter, 3071 mSolverCounterSat, 1206 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6109 SdHoareTripleChecker+Valid, 7323 SdHoareTripleChecker+Invalid, 4278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1206 IncrementalHoareTripleChecker+Valid, 3071 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:36,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6109 Valid, 7323 Invalid, 4278 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1206 Valid, 3071 Invalid, 1 Unknown, 0 Unchecked, 17.2s Time] [2022-11-03 02:24:36,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9240 states. [2022-11-03 02:24:36,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9240 to 9182. [2022-11-03 02:24:36,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9182 states, 5212 states have (on average 1.2904834996162702) internal successors, (6726), 5492 states have internal predecessors, (6726), 3176 states have call successors, (3176), 799 states have call predecessors, (3176), 791 states have return successors, (3175), 3062 states have call predecessors, (3175), 3172 states have call successors, (3175) [2022-11-03 02:24:36,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9182 states to 9182 states and 13077 transitions. [2022-11-03 02:24:36,965 INFO L78 Accepts]: Start accepts. Automaton has 9182 states and 13077 transitions. Word has length 181 [2022-11-03 02:24:36,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:36,966 INFO L495 AbstractCegarLoop]: Abstraction has 9182 states and 13077 transitions. [2022-11-03 02:24:36,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 02:24:36,967 INFO L276 IsEmpty]: Start isEmpty. Operand 9182 states and 13077 transitions. [2022-11-03 02:24:36,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-03 02:24:36,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:36,973 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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] [2022-11-03 02:24:36,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:24:36,974 INFO L420 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)] === [2022-11-03 02:24:36,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:36,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1992989176, now seen corresponding path program 1 times [2022-11-03 02:24:36,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:36,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390247971] [2022-11-03 02:24:36,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:36,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2022-11-03 02:24:38,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:38,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390247971] [2022-11-03 02:24:38,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390247971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:38,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:38,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:24:38,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030210055] [2022-11-03 02:24:38,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:38,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:24:38,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:38,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:24:38,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:24:38,670 INFO L87 Difference]: Start difference. First operand 9182 states and 13077 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, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 02:24:40,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:45,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:46,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:46,778 INFO L93 Difference]: Finished difference Result 26009 states and 36940 transitions. [2022-11-03 02:24:46,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:24:46,779 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, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 186 [2022-11-03 02:24:46,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:46,893 INFO L225 Difference]: With dead ends: 26009 [2022-11-03 02:24:46,893 INFO L226 Difference]: Without dead ends: 16856 [2022-11-03 02:24:46,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:24:46,942 INFO L413 NwaCegarLoop]: 2791 mSDtfsCounter, 2042 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 4795 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:46,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2042 Valid, 4795 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 803 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-03 02:24:46,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16856 states. [2022-11-03 02:24:47,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16856 to 16817. [2022-11-03 02:24:47,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16817 states, 9511 states have (on average 1.2726316896225423) internal successors, (12104), 10020 states have internal predecessors, (12104), 5780 states have call successors, (5780), 1536 states have call predecessors, (5780), 1523 states have return successors, (5779), 5569 states have call predecessors, (5779), 5776 states have call successors, (5779) [2022-11-03 02:24:48,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16817 states to 16817 states and 23663 transitions. [2022-11-03 02:24:48,026 INFO L78 Accepts]: Start accepts. Automaton has 16817 states and 23663 transitions. Word has length 186 [2022-11-03 02:24:48,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:48,027 INFO L495 AbstractCegarLoop]: Abstraction has 16817 states and 23663 transitions. [2022-11-03 02:24:48,027 INFO L496 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, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 02:24:48,027 INFO L276 IsEmpty]: Start isEmpty. Operand 16817 states and 23663 transitions. [2022-11-03 02:24:48,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-03 02:24:48,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:48,035 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 14, 14, 14, 14, 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] [2022-11-03 02:24:48,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:24:48,036 INFO L420 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)] === [2022-11-03 02:24:48,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:48,036 INFO L85 PathProgramCache]: Analyzing trace with hash -159327193, now seen corresponding path program 1 times [2022-11-03 02:24:48,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:48,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624480758] [2022-11-03 02:24:48,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:48,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2022-11-03 02:24:49,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:49,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624480758] [2022-11-03 02:24:49,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624480758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:49,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:49,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:24:49,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338226386] [2022-11-03 02:24:49,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:49,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:24:49,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:49,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:24:49,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:24:49,885 INFO L87 Difference]: Start difference. First operand 16817 states and 23663 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 02:24:52,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:57,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:57,696 INFO L93 Difference]: Finished difference Result 46587 states and 65606 transitions. [2022-11-03 02:24:57,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:24:57,697 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 206 [2022-11-03 02:24:57,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:57,839 INFO L225 Difference]: With dead ends: 46587 [2022-11-03 02:24:57,839 INFO L226 Difference]: Without dead ends: 29799 [2022-11-03 02:24:57,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:24:57,905 INFO L413 NwaCegarLoop]: 2949 mSDtfsCounter, 2271 mSDsluCounter, 2369 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 4981 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:57,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2271 Valid, 4981 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 814 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 02:24:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29799 states. [2022-11-03 02:24:59,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29799 to 29750. [2022-11-03 02:24:59,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29750 states, 16841 states have (on average 1.2694614334065673) internal successors, (21379), 17778 states have internal predecessors, (21379), 10209 states have call successors, (10209), 2722 states have call predecessors, (10209), 2697 states have return successors, (10211), 9809 states have call predecessors, (10211), 10205 states have call successors, (10211) [2022-11-03 02:24:59,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29750 states to 29750 states and 41799 transitions. [2022-11-03 02:24:59,816 INFO L78 Accepts]: Start accepts. Automaton has 29750 states and 41799 transitions. Word has length 206 [2022-11-03 02:24:59,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:59,817 INFO L495 AbstractCegarLoop]: Abstraction has 29750 states and 41799 transitions. [2022-11-03 02:24:59,818 INFO L496 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 02:24:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 29750 states and 41799 transitions. [2022-11-03 02:24:59,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-03 02:24:59,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:59,824 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 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] [2022-11-03 02:24:59,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:24:59,824 INFO L420 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)] === [2022-11-03 02:24:59,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:59,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1039484783, now seen corresponding path program 1 times [2022-11-03 02:24:59,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:59,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522868744] [2022-11-03 02:24:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:59,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:03,269 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2022-11-03 02:25:03,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:03,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522868744] [2022-11-03 02:25:03,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522868744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:03,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:03,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:03,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504069175] [2022-11-03 02:25:03,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:03,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:03,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:03,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:03,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:03,272 INFO L87 Difference]: Start difference. First operand 29750 states and 41799 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:25:05,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:11,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:11,976 INFO L93 Difference]: Finished difference Result 30070 states and 42117 transitions. [2022-11-03 02:25:11,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:25:11,977 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 209 [2022-11-03 02:25:11,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:12,106 INFO L225 Difference]: With dead ends: 30070 [2022-11-03 02:25:12,106 INFO L226 Difference]: Without dead ends: 30068 [2022-11-03 02:25:12,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:12,125 INFO L413 NwaCegarLoop]: 2058 mSDtfsCounter, 2334 mSDsluCounter, 4836 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2345 SdHoareTripleChecker+Valid, 6192 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:12,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2345 Valid, 6192 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1070 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-03 02:25:12,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30068 states. [2022-11-03 02:25:13,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30068 to 30066. [2022-11-03 02:25:13,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30066 states, 17024 states have (on average 1.2686795112781954) internal successors, (21598), 17985 states have internal predecessors, (21598), 10257 states have call successors, (10257), 2807 states have call predecessors, (10257), 2782 states have return successors, (10259), 9857 states have call predecessors, (10259), 10253 states have call successors, (10259) [2022-11-03 02:25:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30066 states to 30066 states and 42114 transitions. [2022-11-03 02:25:13,949 INFO L78 Accepts]: Start accepts. Automaton has 30066 states and 42114 transitions. Word has length 209 [2022-11-03 02:25:13,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:13,950 INFO L495 AbstractCegarLoop]: Abstraction has 30066 states and 42114 transitions. [2022-11-03 02:25:13,950 INFO L496 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:25:13,951 INFO L276 IsEmpty]: Start isEmpty. Operand 30066 states and 42114 transitions. [2022-11-03 02:25:13,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-03 02:25:13,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:13,956 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 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] [2022-11-03 02:25:13,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:25:13,956 INFO L420 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)] === [2022-11-03 02:25:13,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:13,957 INFO L85 PathProgramCache]: Analyzing trace with hash -460443129, now seen corresponding path program 1 times [2022-11-03 02:25:13,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:13,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275918732] [2022-11-03 02:25:13,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:13,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:17,147 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2022-11-03 02:25:17,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:17,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275918732] [2022-11-03 02:25:17,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275918732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:17,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:17,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:17,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544512511] [2022-11-03 02:25:17,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:17,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:17,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:17,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:17,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:17,149 INFO L87 Difference]: Start difference. First operand 30066 states and 42114 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-03 02:25:19,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:26,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:26,338 INFO L93 Difference]: Finished difference Result 30072 states and 42119 transitions. [2022-11-03 02:25:26,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:25:26,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 214 [2022-11-03 02:25:26,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:26,479 INFO L225 Difference]: With dead ends: 30072 [2022-11-03 02:25:26,479 INFO L226 Difference]: Without dead ends: 30070 [2022-11-03 02:25:26,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:26,496 INFO L413 NwaCegarLoop]: 2057 mSDtfsCounter, 2341 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2351 SdHoareTripleChecker+Valid, 6152 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:26,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2351 Valid, 6152 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-11-03 02:25:26,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30070 states. [2022-11-03 02:25:28,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30070 to 30070. [2022-11-03 02:25:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30070 states, 17027 states have (on average 1.2686321724320198) internal successors, (21601), 17988 states have internal predecessors, (21601), 10257 states have call successors, (10257), 2808 states have call predecessors, (10257), 2783 states have return successors, (10259), 9857 states have call predecessors, (10259), 10253 states have call successors, (10259) [2022-11-03 02:25:28,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30070 states to 30070 states and 42117 transitions. [2022-11-03 02:25:28,586 INFO L78 Accepts]: Start accepts. Automaton has 30070 states and 42117 transitions. Word has length 214 [2022-11-03 02:25:28,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:28,587 INFO L495 AbstractCegarLoop]: Abstraction has 30070 states and 42117 transitions. [2022-11-03 02:25:28,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-03 02:25:28,587 INFO L276 IsEmpty]: Start isEmpty. Operand 30070 states and 42117 transitions. [2022-11-03 02:25:28,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-03 02:25:28,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:28,595 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 3, 2, 2, 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] [2022-11-03 02:25:28,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:25:28,595 INFO L420 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)] === [2022-11-03 02:25:28,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:28,596 INFO L85 PathProgramCache]: Analyzing trace with hash -376491407, now seen corresponding path program 1 times [2022-11-03 02:25:28,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:28,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002057017] [2022-11-03 02:25:28,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:28,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2022-11-03 02:25:31,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:31,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002057017] [2022-11-03 02:25:31,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002057017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:31,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:31,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:31,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854995086] [2022-11-03 02:25:31,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:31,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:31,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:31,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:31,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:31,335 INFO L87 Difference]: Start difference. First operand 30070 states and 42117 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:25:33,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:39,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:41,786 INFO L93 Difference]: Finished difference Result 30076 states and 42122 transitions. [2022-11-03 02:25:41,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:25:41,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 217 [2022-11-03 02:25:41,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:41,897 INFO L225 Difference]: With dead ends: 30076 [2022-11-03 02:25:41,897 INFO L226 Difference]: Without dead ends: 30074 [2022-11-03 02:25:41,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:41,911 INFO L413 NwaCegarLoop]: 2057 mSDtfsCounter, 2342 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2351 SdHoareTripleChecker+Valid, 6152 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:41,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2351 Valid, 6152 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-11-03 02:25:41,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30074 states. [2022-11-03 02:25:43,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30074 to 30074. [2022-11-03 02:25:43,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30074 states, 17030 states have (on average 1.2685848502642396) internal successors, (21604), 17991 states have internal predecessors, (21604), 10257 states have call successors, (10257), 2809 states have call predecessors, (10257), 2784 states have return successors, (10259), 9857 states have call predecessors, (10259), 10253 states have call successors, (10259) [2022-11-03 02:25:43,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30074 states to 30074 states and 42120 transitions. [2022-11-03 02:25:43,870 INFO L78 Accepts]: Start accepts. Automaton has 30074 states and 42120 transitions. Word has length 217 [2022-11-03 02:25:43,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:43,871 INFO L495 AbstractCegarLoop]: Abstraction has 30074 states and 42120 transitions. [2022-11-03 02:25:43,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:25:43,871 INFO L276 IsEmpty]: Start isEmpty. Operand 30074 states and 42120 transitions. [2022-11-03 02:25:43,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-03 02:25:43,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:43,879 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 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] [2022-11-03 02:25:43,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:25:43,880 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:25:43,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:43,880 INFO L85 PathProgramCache]: Analyzing trace with hash 95076359, now seen corresponding path program 1 times [2022-11-03 02:25:43,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:43,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108633380] [2022-11-03 02:25:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:43,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:46,757 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2022-11-03 02:25:46,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:46,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108633380] [2022-11-03 02:25:46,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108633380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:46,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:46,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:46,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033859539] [2022-11-03 02:25:46,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:46,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:46,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:46,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:46,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:46,760 INFO L87 Difference]: Start difference. First operand 30074 states and 42120 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:25:48,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:55,985 INFO L93 Difference]: Finished difference Result 30080 states and 42125 transitions. [2022-11-03 02:25:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:25:55,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 224 [2022-11-03 02:25:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:56,083 INFO L225 Difference]: With dead ends: 30080 [2022-11-03 02:25:56,084 INFO L226 Difference]: Without dead ends: 30078 [2022-11-03 02:25:56,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:56,095 INFO L413 NwaCegarLoop]: 2057 mSDtfsCounter, 2341 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 6152 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:56,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2349 Valid, 6152 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-11-03 02:25:56,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30078 states. [2022-11-03 02:25:57,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30078 to 30078. [2022-11-03 02:25:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30078 states, 17033 states have (on average 1.2685375447660423) internal successors, (21607), 17994 states have internal predecessors, (21607), 10257 states have call successors, (10257), 2810 states have call predecessors, (10257), 2785 states have return successors, (10259), 9857 states have call predecessors, (10259), 10253 states have call successors, (10259) [2022-11-03 02:25:57,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30078 states to 30078 states and 42123 transitions. [2022-11-03 02:25:57,923 INFO L78 Accepts]: Start accepts. Automaton has 30078 states and 42123 transitions. Word has length 224 [2022-11-03 02:25:57,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:57,924 INFO L495 AbstractCegarLoop]: Abstraction has 30078 states and 42123 transitions. [2022-11-03 02:25:57,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:25:57,924 INFO L276 IsEmpty]: Start isEmpty. Operand 30078 states and 42123 transitions. [2022-11-03 02:25:57,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-03 02:25:57,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:57,932 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:57,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:25:57,932 INFO L420 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)] === [2022-11-03 02:25:57,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:57,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1736300475, now seen corresponding path program 1 times [2022-11-03 02:25:57,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:57,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551479379] [2022-11-03 02:25:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:57,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2022-11-03 02:26:00,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:00,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551479379] [2022-11-03 02:26:00,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551479379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:00,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:00,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:00,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879017091] [2022-11-03 02:26:00,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:00,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:00,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:00,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:00,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:00,521 INFO L87 Difference]: Start difference. First operand 30078 states and 42123 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-03 02:26:02,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:10,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:10,019 INFO L93 Difference]: Finished difference Result 30084 states and 42128 transitions. [2022-11-03 02:26:10,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:26:10,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 228 [2022-11-03 02:26:10,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:10,118 INFO L225 Difference]: With dead ends: 30084 [2022-11-03 02:26:10,118 INFO L226 Difference]: Without dead ends: 30082 [2022-11-03 02:26:10,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:10,129 INFO L413 NwaCegarLoop]: 2057 mSDtfsCounter, 2341 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 6152 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:10,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 6152 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-11-03 02:26:10,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30082 states. [2022-11-03 02:26:11,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30082 to 30082. [2022-11-03 02:26:11,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30082 states, 17036 states have (on average 1.2684902559286217) internal successors, (21610), 17997 states have internal predecessors, (21610), 10257 states have call successors, (10257), 2811 states have call predecessors, (10257), 2786 states have return successors, (10259), 9857 states have call predecessors, (10259), 10253 states have call successors, (10259) [2022-11-03 02:26:12,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30082 states to 30082 states and 42126 transitions. [2022-11-03 02:26:12,139 INFO L78 Accepts]: Start accepts. Automaton has 30082 states and 42126 transitions. Word has length 228 [2022-11-03 02:26:12,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:12,140 INFO L495 AbstractCegarLoop]: Abstraction has 30082 states and 42126 transitions. [2022-11-03 02:26:12,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-03 02:26:12,141 INFO L276 IsEmpty]: Start isEmpty. Operand 30082 states and 42126 transitions. [2022-11-03 02:26:12,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-03 02:26:12,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:12,152 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:12,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:26:12,152 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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)] === [2022-11-03 02:26:12,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:12,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1739230763, now seen corresponding path program 1 times [2022-11-03 02:26:12,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:12,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149012409] [2022-11-03 02:26:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:12,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:13,990 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2022-11-03 02:26:13,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:13,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149012409] [2022-11-03 02:26:13,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149012409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:13,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:13,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:26:13,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377499544] [2022-11-03 02:26:13,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:13,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:13,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:13,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:13,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:13,993 INFO L87 Difference]: Start difference. First operand 30082 states and 42126 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-03 02:26:16,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:21,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:25,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:25,375 INFO L93 Difference]: Finished difference Result 86528 states and 121244 transitions. [2022-11-03 02:26:25,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:26:25,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 249 [2022-11-03 02:26:25,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:25,581 INFO L225 Difference]: With dead ends: 86528 [2022-11-03 02:26:25,582 INFO L226 Difference]: Without dead ends: 56475 [2022-11-03 02:26:25,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:25,675 INFO L413 NwaCegarLoop]: 2652 mSDtfsCounter, 2334 mSDsluCounter, 2391 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 4701 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:25,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2334 Valid, 4701 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 713 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-11-03 02:26:25,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56475 states. [2022-11-03 02:26:29,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56475 to 56382. [2022-11-03 02:26:29,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56382 states, 32033 states have (on average 1.2699091561826865) internal successors, (40679), 33897 states have internal predecessors, (40679), 19139 states have call successors, (19139), 5256 states have call predecessors, (19139), 5207 states have return successors, (19147), 18324 states have call predecessors, (19147), 19135 states have call successors, (19147) [2022-11-03 02:26:29,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56382 states to 56382 states and 78965 transitions. [2022-11-03 02:26:29,776 INFO L78 Accepts]: Start accepts. Automaton has 56382 states and 78965 transitions. Word has length 249 [2022-11-03 02:26:29,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:29,776 INFO L495 AbstractCegarLoop]: Abstraction has 56382 states and 78965 transitions. [2022-11-03 02:26:29,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-03 02:26:29,777 INFO L276 IsEmpty]: Start isEmpty. Operand 56382 states and 78965 transitions. [2022-11-03 02:26:29,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-03 02:26:29,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:29,784 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 6, 5, 5, 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] [2022-11-03 02:26:29,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:26:29,785 INFO L420 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)] === [2022-11-03 02:26:29,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:29,786 INFO L85 PathProgramCache]: Analyzing trace with hash 503370195, now seen corresponding path program 1 times [2022-11-03 02:26:29,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:29,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031212378] [2022-11-03 02:26:29,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:29,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:32,435 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2022-11-03 02:26:32,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:32,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031212378] [2022-11-03 02:26:32,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031212378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:32,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:32,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:32,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930553079] [2022-11-03 02:26:32,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:32,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:32,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:32,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:32,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:32,439 INFO L87 Difference]: Start difference. First operand 56382 states and 78965 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-03 02:26:34,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []