./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/bin/utaipan-I9t0OCRTmS/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_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/bin/utaipan-I9t0OCRTmS --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-8393723 [2022-11-19 06:53:10,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:53:10,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:53:10,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:53:10,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:53:10,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:53:10,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:53:10,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:53:10,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:53:10,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:53:10,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:53:10,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:53:10,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:53:10,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:53:10,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:53:10,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:53:10,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:53:10,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:53:10,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:53:10,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:53:10,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:53:10,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:53:10,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:53:10,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:53:10,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:53:10,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:53:10,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:53:10,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:53:10,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:53:10,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:53:10,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:53:10,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:53:10,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:53:10,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:53:10,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:53:10,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:53:10,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:53:10,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:53:10,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:53:10,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:53:10,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:53:10,512 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:53:10,553 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:53:10,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:53:10,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:53:10,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:53:10,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:53:10,556 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:53:10,556 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:53:10,556 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:53:10,556 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:53:10,557 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:53:10,558 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:53:10,558 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:53:10,558 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:53:10,558 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:53:10,559 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:53:10,559 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:53:10,559 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:53:10,559 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:53:10,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:53:10,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:53:10,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:53:10,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:53:10,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:53:10,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:53:10,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:53:10,563 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:53:10,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:53:10,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:53:10,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:53:10,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:53:10,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:53:10,565 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:53:10,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:53:10,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:53:10,566 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:53:10,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:53:10,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:53:10,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:53:10,567 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_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6eed6410a0dd7e708ffb27250b590aa2913bf9f742c15130caf6eadad29510cc [2022-11-19 06:53:10,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:53:10,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:53:10,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:53:10,927 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:53:10,928 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:53:10,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-19 06:53:11,019 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/bin/utaipan-I9t0OCRTmS/data/25be5065f/65f9ee75fcbe45b5838e74deef6bb83a/FLAG9485045e8 [2022-11-19 06:53:11,993 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:53:11,994 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-19 06:53:12,062 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/bin/utaipan-I9t0OCRTmS/data/25be5065f/65f9ee75fcbe45b5838e74deef6bb83a/FLAG9485045e8 [2022-11-19 06:53:12,348 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/bin/utaipan-I9t0OCRTmS/data/25be5065f/65f9ee75fcbe45b5838e74deef6bb83a [2022-11-19 06:53:12,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:53:12,354 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:53:12,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:53:12,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:53:12,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:53:12,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:53:12" (1/1) ... [2022-11-19 06:53:12,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ee52a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:12, skipping insertion in model container [2022-11-19 06:53:12,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:53:12" (1/1) ... [2022-11-19 06:53:12,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:53:12,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:53:15,916 WARN L234 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_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404089,404102] [2022-11-19 06:53:15,922 WARN L234 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_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404258,404271] [2022-11-19 06:53:15,923 WARN L234 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_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404425,404438] [2022-11-19 06:53:15,925 WARN L234 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_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404593,404606] [2022-11-19 06:53:15,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:53:16,061 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:53:16,507 WARN L234 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_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404089,404102] [2022-11-19 06:53:16,508 WARN L234 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_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404258,404271] [2022-11-19 06:53:16,508 WARN L234 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_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404425,404438] [2022-11-19 06:53:16,509 WARN L234 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_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404593,404606] [2022-11-19 06:53:16,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:53:16,761 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:53:16,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:16 WrapperNode [2022-11-19 06:53:16,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:53:16,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:53:16,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:53:16,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:53:16,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:16" (1/1) ... [2022-11-19 06:53:16,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:16" (1/1) ... [2022-11-19 06:53:17,090 INFO L138 Inliner]: procedures = 559, calls = 2809, calls flagged for inlining = 291, calls inlined = 253, statements flattened = 5891 [2022-11-19 06:53:17,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:53:17,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:53:17,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:53:17,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:53:17,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:16" (1/1) ... [2022-11-19 06:53:17,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:16" (1/1) ... [2022-11-19 06:53:17,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:16" (1/1) ... [2022-11-19 06:53:17,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:16" (1/1) ... [2022-11-19 06:53:17,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:16" (1/1) ... [2022-11-19 06:53:17,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:16" (1/1) ... [2022-11-19 06:53:17,487 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:16" (1/1) ... [2022-11-19 06:53:17,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:16" (1/1) ... [2022-11-19 06:53:17,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:53:17,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:53:17,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:53:17,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:53:17,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:16" (1/1) ... [2022-11-19 06:53:17,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:53:17,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:53:17,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:53:17,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11cbf47-3d33-4f79-b69a-aa8c8e65c354/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:53:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 06:53:17,639 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 06:53:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 06:53:17,639 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 06:53:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-19 06:53:17,639 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-19 06:53:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 06:53:17,640 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 06:53:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 06:53:17,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 06:53:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 06:53:17,640 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 06:53:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 06:53:17,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 06:53:17,641 INFO L130 BoogieDeclarations]: Found specification of procedure free_tbufs [2022-11-19 06:53:17,641 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tbufs [2022-11-19 06:53:17,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_80 [2022-11-19 06:53:17,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_80 [2022-11-19 06:53:17,641 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-19 06:53:17,641 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-19 06:53:17,641 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 06:53:17,641 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 06:53:17,642 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-19 06:53:17,642 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-19 06:53:17,642 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 06:53:17,642 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 06:53:17,642 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-19 06:53:17,643 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-19 06:53:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_poll [2022-11-19 06:53:17,643 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_poll [2022-11-19 06:53:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-19 06:53:17,643 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-19 06:53:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-19 06:53:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-19 06:53:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_low [2022-11-19 06:53:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_low [2022-11-19 06:53:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 06:53:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 06:53:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 06:53:17,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 06:53:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 06:53:17,645 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 06:53:17,646 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-19 06:53:17,646 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-19 06:53:17,646 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 06:53:17,647 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 06:53:17,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 06:53:17,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 06:53:17,647 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-19 06:53:17,647 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-19 06:53:17,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:53:17,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_62 [2022-11-19 06:53:17,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_62 [2022-11-19 06:53:17,648 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-19 06:53:17,648 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-19 06:53:17,649 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit [2022-11-19 06:53:17,649 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit [2022-11-19 06:53:17,649 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 06:53:17,649 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 06:53:17,649 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 06:53:17,649 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 06:53:17,649 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_rbufs [2022-11-19 06:53:17,649 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_rbufs [2022-11-19 06:53:17,650 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 06:53:17,650 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 06:53:17,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 06:53:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 06:53:17,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 06:53:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_interrupt [2022-11-19 06:53:17,651 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_interrupt [2022-11-19 06:53:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:53:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 06:53:17,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 06:53:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 06:53:17,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 06:53:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 06:53:17,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 06:53:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_disable [2022-11-19 06:53:17,652 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_disable [2022-11-19 06:53:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-11-19 06:53:17,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-11-19 06:53:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-19 06:53:17,654 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-19 06:53:17,654 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 06:53:17,654 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 06:53:17,655 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_carrier [2022-11-19 06:53:17,655 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_carrier [2022-11-19 06:53:17,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 06:53:17,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 06:53:17,655 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_shutdown [2022-11-19 06:53:17,656 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_shutdown [2022-11-19 06:53:17,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:53:17,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 06:53:17,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 06:53:17,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 06:53:17,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 06:53:17,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-19 06:53:17,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-19 06:53:17,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-19 06:53:17,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-19 06:53:17,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:53:17,657 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2022-11-19 06:53:17,657 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2022-11-19 06:53:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 06:53:17,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 06:53:17,661 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 06:53:17,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 06:53:17,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:53:17,661 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 06:53:17,661 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-19 06:53:17,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-19 06:53:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 06:53:17,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 06:53:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_rx_mode [2022-11-19 06:53:17,668 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_rx_mode [2022-11-19 06:53:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 06:53:17,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 06:53:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_rx_crc_and_missed_errord [2022-11-19 06:53:17,669 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_rx_crc_and_missed_errord [2022-11-19 06:53:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-19 06:53:17,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-19 06:53:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rhine_private [2022-11-19 06:53:17,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rhine_private [2022-11-19 06:53:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 06:53:17,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 06:53:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-19 06:53:17,670 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-19 06:53:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 06:53:17,670 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 06:53:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 06:53:17,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 06:53:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2022-11-19 06:53:17,670 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2022-11-19 06:53:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 06:53:17,671 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 06:53:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_68 [2022-11-19 06:53:17,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_68 [2022-11-19 06:53:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_power_init [2022-11-19 06:53:17,671 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_power_init [2022-11-19 06:53:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_tx_timeout [2022-11-19 06:53:17,671 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_tx_timeout [2022-11-19 06:53:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rhine_private [2022-11-19 06:53:17,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rhine_private [2022-11-19 06:53:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-19 06:53:17,672 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-19 06:53:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:53:17,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:53:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 06:53:17,672 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 06:53:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 06:53:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 06:53:17,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 06:53:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 06:53:17,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 06:53:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-19 06:53:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_chip_reset [2022-11-19 06:53:17,673 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_chip_reset [2022-11-19 06:53:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 06:53:17,673 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 06:53:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-19 06:53:17,674 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-19 06:53:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 06:53:17,674 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 06:53:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_cam_mask [2022-11-19 06:53:17,674 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_cam_mask [2022-11-19 06:53:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2022-11-19 06:53:17,674 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2022-11-19 06:53:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 06:53:17,674 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 06:53:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_remove_one [2022-11-19 06:53:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_remove_one [2022-11-19 06:53:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-19 06:53:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-19 06:53:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-19 06:53:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-19 06:53:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_close [2022-11-19 06:53:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_close [2022-11-19 06:53:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_79 [2022-11-19 06:53:17,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_79 [2022-11-19 06:53:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 06:53:17,677 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 06:53:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:53:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 06:53:17,678 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 06:53:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 06:53:17,678 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 06:53:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:53:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_check_media [2022-11-19 06:53:17,678 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_check_media [2022-11-19 06:53:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2022-11-19 06:53:17,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2022-11-19 06:53:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:53:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure free_rbufs [2022-11-19 06:53:17,679 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rbufs [2022-11-19 06:53:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_get_events [2022-11-19 06:53:17,679 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_get_events [2022-11-19 06:53:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-19 06:53:17,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-19 06:53:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-19 06:53:17,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-19 06:53:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure enable_mmio [2022-11-19 06:53:17,679 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_mmio [2022-11-19 06:53:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_vlan_cam_mask [2022-11-19 06:53:17,680 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_vlan_cam_mask [2022-11-19 06:53:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-19 06:53:17,680 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-19 06:53:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-19 06:53:17,680 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-19 06:53:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 06:53:17,680 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 06:53:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-19 06:53:17,680 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-19 06:53:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 06:53:17,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 06:53:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 06:53:17,681 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 06:53:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-19 06:53:17,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-19 06:53:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 06:53:17,681 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 06:53:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 06:53:17,682 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 06:53:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_63 [2022-11-19 06:53:17,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_63 [2022-11-19 06:53:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_disable_linkmon [2022-11-19 06:53:17,682 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_disable_linkmon [2022-11-19 06:53:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_ack_events [2022-11-19 06:53:17,682 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_ack_events [2022-11-19 06:53:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 06:53:17,682 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 06:53:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_resume [2022-11-19 06:53:17,684 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_resume [2022-11-19 06:53:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:53:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_67 [2022-11-19 06:53:17,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_67 [2022-11-19 06:53:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 06:53:17,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 06:53:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2022-11-19 06:53:17,688 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2022-11-19 06:53:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 06:53:17,688 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 06:53:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_high [2022-11-19 06:53:17,689 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_high [2022-11-19 06:53:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_irq_disable [2022-11-19 06:53:17,689 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_irq_disable [2022-11-19 06:53:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_enable [2022-11-19 06:53:17,690 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_enable [2022-11-19 06:53:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_tbufs [2022-11-19 06:53:17,690 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_tbufs [2022-11-19 06:53:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-19 06:53:17,690 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-19 06:53:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 06:53:17,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 06:53:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-19 06:53:17,691 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-19 06:53:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-19 06:53:17,691 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-19 06:53:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_enable_linkmon [2022-11-19 06:53:17,691 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_enable_linkmon [2022-11-19 06:53:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_vcam [2022-11-19 06:53:17,691 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_vcam [2022-11-19 06:53:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 06:53:17,691 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 06:53:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-19 06:53:17,692 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-19 06:53:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:53:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_suspend [2022-11-19 06:53:17,692 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_suspend [2022-11-19 06:53:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_open [2022-11-19 06:53:17,692 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_open [2022-11-19 06:53:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 06:53:17,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 06:53:18,781 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:53:18,790 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:53:18,989 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:01:09,756 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 07:01:09,899 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:01:13,919 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:01:13,919 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-19 07:01:13,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:01:13 BoogieIcfgContainer [2022-11-19 07:01:13,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:01:13,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:01:13,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:01:13,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:01:13,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:53:12" (1/3) ... [2022-11-19 07:01:13,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2721d848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:01:13, skipping insertion in model container [2022-11-19 07:01:13,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:16" (2/3) ... [2022-11-19 07:01:13,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2721d848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:01:13, skipping insertion in model container [2022-11-19 07:01:13,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:01:13" (3/3) ... [2022-11-19 07:01:13,937 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-19 07:01:13,958 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:01:13,958 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 07:01:14,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:01:14,095 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;@780885ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:01:14,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 07:01:14,108 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) [2022-11-19 07:01:14,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-19 07:01:14,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:14,144 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] [2022-11-19 07:01:14,144 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)] === [2022-11-19 07:01:14,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:14,151 INFO L85 PathProgramCache]: Analyzing trace with hash 372962801, now seen corresponding path program 1 times [2022-11-19 07:01:14,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:14,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613595819] [2022-11-19 07:01:14,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:14,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2022-11-19 07:01:17,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:17,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613595819] [2022-11-19 07:01:17,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613595819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:17,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:17,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:01:17,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64692285] [2022-11-19 07:01:17,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:17,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:01:17,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:17,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:01:17,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:01:17,408 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) [2022-11-19 07:01:19,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:26,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:26,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:26,134 INFO L93 Difference]: Finished difference Result 4901 states and 7279 transitions. [2022-11-19 07:01:26,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:01:26,136 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 [2022-11-19 07:01:26,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:26,177 INFO L225 Difference]: With dead ends: 4901 [2022-11-19 07:01:26,177 INFO L226 Difference]: Without dead ends: 3233 [2022-11-19 07:01:26,191 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 [2022-11-19 07:01:26,193 INFO L413 NwaCegarLoop]: 2627 mSDtfsCounter, 2301 mSDsluCounter, 2039 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 4666 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:26,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 4666 Invalid, 738 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 728 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-11-19 07:01:26,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2022-11-19 07:01:26,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 3229. [2022-11-19 07:01:26,503 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) [2022-11-19 07:01:26,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3229 states to 3229 states and 4671 transitions. [2022-11-19 07:01:26,532 INFO L78 Accepts]: Start accepts. Automaton has 3229 states and 4671 transitions. Word has length 165 [2022-11-19 07:01:26,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:26,536 INFO L495 AbstractCegarLoop]: Abstraction has 3229 states and 4671 transitions. [2022-11-19 07:01:26,536 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) [2022-11-19 07:01:26,536 INFO L276 IsEmpty]: Start isEmpty. Operand 3229 states and 4671 transitions. [2022-11-19 07:01:26,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-19 07:01:26,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:26,554 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] [2022-11-19 07:01:26,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:01:26,555 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)] === [2022-11-19 07:01:26,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:26,556 INFO L85 PathProgramCache]: Analyzing trace with hash 489232773, now seen corresponding path program 1 times [2022-11-19 07:01:26,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:26,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458610219] [2022-11-19 07:01:26,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:26,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-11-19 07:01:28,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:28,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458610219] [2022-11-19 07:01:28,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458610219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:28,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:28,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:01:28,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10127093] [2022-11-19 07:01:28,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:28,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:01:28,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:28,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:01:28,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:01:28,384 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) [2022-11-19 07:01:30,547 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 [] [2022-11-19 07:01:33,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:37,090 INFO L93 Difference]: Finished difference Result 9107 states and 13119 transitions. [2022-11-19 07:01:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:01:37,091 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 [2022-11-19 07:01:37,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:37,136 INFO L225 Difference]: With dead ends: 9107 [2022-11-19 07:01:37,136 INFO L226 Difference]: Without dead ends: 5907 [2022-11-19 07:01:37,154 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 [2022-11-19 07:01:37,155 INFO L413 NwaCegarLoop]: 2544 mSDtfsCounter, 1960 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1960 SdHoareTripleChecker+Valid, 4547 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:37,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1960 Valid, 4547 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 743 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-11-19 07:01:37,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5907 states. [2022-11-19 07:01:37,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5907 to 5878. [2022-11-19 07:01:37,560 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) [2022-11-19 07:01:37,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 8444 transitions. [2022-11-19 07:01:37,608 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 8444 transitions. Word has length 169 [2022-11-19 07:01:37,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:37,611 INFO L495 AbstractCegarLoop]: Abstraction has 5878 states and 8444 transitions. [2022-11-19 07:01:37,611 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) [2022-11-19 07:01:37,612 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 8444 transitions. [2022-11-19 07:01:37,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-19 07:01:37,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:37,618 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] [2022-11-19 07:01:37,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:01:37,619 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)] === [2022-11-19 07:01:37,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:37,629 INFO L85 PathProgramCache]: Analyzing trace with hash 175417666, now seen corresponding path program 1 times [2022-11-19 07:01:37,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:37,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317272349] [2022-11-19 07:01:37,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:37,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:39,698 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2022-11-19 07:01:39,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:39,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317272349] [2022-11-19 07:01:39,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317272349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:39,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:39,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:01:39,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603839963] [2022-11-19 07:01:39,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:39,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:01:39,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:39,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:01:39,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:01:39,703 INFO L87 Difference]: Start difference. First operand 5878 states and 8444 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) [2022-11-19 07:01:41,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:46,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:46,868 INFO L93 Difference]: Finished difference Result 16804 states and 24074 transitions. [2022-11-19 07:01:46,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:01:46,869 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 [2022-11-19 07:01:46,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:46,940 INFO L225 Difference]: With dead ends: 16804 [2022-11-19 07:01:46,940 INFO L226 Difference]: Without dead ends: 10955 [2022-11-19 07:01:46,972 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 [2022-11-19 07:01:46,973 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 2042 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 4734 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:46,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2042 Valid, 4734 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 814 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-11-19 07:01:46,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10955 states. [2022-11-19 07:01:47,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10955 to 10922. [2022-11-19 07:01:47,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10922 states, 6167 states have (on average 1.2790659964326252) internal successors, (7888), 6497 states have internal predecessors, (7888), 3817 states have call successors, (3817), 940 states have call predecessors, (3817), 935 states have return successors, (3815), 3700 states have call predecessors, (3815), 3813 states have call successors, (3815) [2022-11-19 07:01:47,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10922 states to 10922 states and 15520 transitions. [2022-11-19 07:01:47,729 INFO L78 Accepts]: Start accepts. Automaton has 10922 states and 15520 transitions. Word has length 186 [2022-11-19 07:01:47,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:47,730 INFO L495 AbstractCegarLoop]: Abstraction has 10922 states and 15520 transitions. [2022-11-19 07:01:47,732 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) [2022-11-19 07:01:47,732 INFO L276 IsEmpty]: Start isEmpty. Operand 10922 states and 15520 transitions. [2022-11-19 07:01:47,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-19 07:01:47,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:47,737 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] [2022-11-19 07:01:47,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:01:47,737 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)] === [2022-11-19 07:01:47,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:47,738 INFO L85 PathProgramCache]: Analyzing trace with hash 483226768, now seen corresponding path program 1 times [2022-11-19 07:01:47,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:47,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180884558] [2022-11-19 07:01:47,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:47,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:51,474 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2022-11-19 07:01:51,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:51,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180884558] [2022-11-19 07:01:51,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180884558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:51,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:51,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:01:51,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916155467] [2022-11-19 07:01:51,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:51,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:01:51,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:51,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:01:51,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:01:51,476 INFO L87 Difference]: Start difference. First operand 10922 states and 15520 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) [2022-11-19 07:01:53,634 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 [] [2022-11-19 07:02:09,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:09,416 INFO L93 Difference]: Finished difference Result 27780 states and 39324 transitions. [2022-11-19 07:02:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:02:09,417 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 [2022-11-19 07:02:09,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:09,518 INFO L225 Difference]: With dead ends: 27780 [2022-11-19 07:02:09,518 INFO L226 Difference]: Without dead ends: 16887 [2022-11-19 07:02:09,570 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 [2022-11-19 07:02:09,571 INFO L413 NwaCegarLoop]: 3383 mSDtfsCounter, 5896 mSDsluCounter, 4365 mSDsCounter, 0 mSdLazyCounter, 3419 mSolverCounterSat, 1205 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6035 SdHoareTripleChecker+Valid, 7748 SdHoareTripleChecker+Invalid, 4625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1205 IncrementalHoareTripleChecker+Valid, 3419 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:09,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6035 Valid, 7748 Invalid, 4625 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1205 Valid, 3419 Invalid, 1 Unknown, 0 Unchecked, 17.0s Time] [2022-11-19 07:02:09,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16887 states. [2022-11-19 07:02:10,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16887 to 16817. [2022-11-19 07:02:10,573 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) [2022-11-19 07:02:10,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16817 states to 16817 states and 23663 transitions. [2022-11-19 07:02:10,651 INFO L78 Accepts]: Start accepts. Automaton has 16817 states and 23663 transitions. Word has length 181 [2022-11-19 07:02:10,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:10,652 INFO L495 AbstractCegarLoop]: Abstraction has 16817 states and 23663 transitions. [2022-11-19 07:02:10,652 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) [2022-11-19 07:02:10,652 INFO L276 IsEmpty]: Start isEmpty. Operand 16817 states and 23663 transitions. [2022-11-19 07:02:10,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-19 07:02:10,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:10,661 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] [2022-11-19 07:02:10,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:02:10,661 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)] === [2022-11-19 07:02:10,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:10,662 INFO L85 PathProgramCache]: Analyzing trace with hash -840645987, now seen corresponding path program 1 times [2022-11-19 07:02:10,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:10,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696567317] [2022-11-19 07:02:10,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:10,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2022-11-19 07:02:12,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:12,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696567317] [2022-11-19 07:02:12,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696567317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:02:12,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:02:12,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:02:12,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668501306] [2022-11-19 07:02:12,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:02:12,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:02:12,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:12,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:02:12,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:02:12,532 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) [2022-11-19 07:02:14,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:02:20,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:20,870 INFO L93 Difference]: Finished difference Result 46587 states and 65606 transitions. [2022-11-19 07:02:20,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:02:20,871 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 [2022-11-19 07:02:20,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:21,013 INFO L225 Difference]: With dead ends: 46587 [2022-11-19 07:02:21,013 INFO L226 Difference]: Without dead ends: 29799 [2022-11-19 07:02:21,072 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 [2022-11-19 07:02:21,073 INFO L413 NwaCegarLoop]: 2942 mSDtfsCounter, 2271 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 4970 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:21,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2271 Valid, 4970 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 825 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-19 07:02:21,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29799 states. [2022-11-19 07:02:22,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29799 to 29750. [2022-11-19 07:02:22,781 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) [2022-11-19 07:02:22,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29750 states to 29750 states and 41799 transitions. [2022-11-19 07:02:22,914 INFO L78 Accepts]: Start accepts. Automaton has 29750 states and 41799 transitions. Word has length 206 [2022-11-19 07:02:22,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:22,915 INFO L495 AbstractCegarLoop]: Abstraction has 29750 states and 41799 transitions. [2022-11-19 07:02:22,916 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) [2022-11-19 07:02:22,916 INFO L276 IsEmpty]: Start isEmpty. Operand 29750 states and 41799 transitions. [2022-11-19 07:02:22,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-19 07:02:22,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:22,921 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 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] [2022-11-19 07:02:22,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:02:22,921 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)] === [2022-11-19 07:02:22,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:22,922 INFO L85 PathProgramCache]: Analyzing trace with hash 739770988, now seen corresponding path program 1 times [2022-11-19 07:02:22,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:22,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620920487] [2022-11-19 07:02:22,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:22,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-19 07:02:26,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:26,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620920487] [2022-11-19 07:02:26,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620920487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:02:26,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:02:26,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:02:26,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918071980] [2022-11-19 07:02:26,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:02:26,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:02:26,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:26,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:02:26,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:02:26,088 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) [2022-11-19 07:02:28,221 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 [] [2022-11-19 07:02:35,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:35,666 INFO L93 Difference]: Finished difference Result 30070 states and 42117 transitions. [2022-11-19 07:02:35,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:02:35,667 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 208 [2022-11-19 07:02:35,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:35,847 INFO L225 Difference]: With dead ends: 30070 [2022-11-19 07:02:35,847 INFO L226 Difference]: Without dead ends: 30068 [2022-11-19 07:02:35,866 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 [2022-11-19 07:02:35,867 INFO L413 NwaCegarLoop]: 2054 mSDtfsCounter, 2334 mSDsluCounter, 4126 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2345 SdHoareTripleChecker+Valid, 6180 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:35,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2345 Valid, 6180 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1082 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2022-11-19 07:02:35,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30068 states. [2022-11-19 07:02:37,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30068 to 30066. [2022-11-19 07:02:37,589 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) [2022-11-19 07:02:37,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30066 states to 30066 states and 42114 transitions. [2022-11-19 07:02:37,728 INFO L78 Accepts]: Start accepts. Automaton has 30066 states and 42114 transitions. Word has length 208 [2022-11-19 07:02:37,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:37,729 INFO L495 AbstractCegarLoop]: Abstraction has 30066 states and 42114 transitions. [2022-11-19 07:02:37,730 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) [2022-11-19 07:02:37,730 INFO L276 IsEmpty]: Start isEmpty. Operand 30066 states and 42114 transitions. [2022-11-19 07:02:37,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-19 07:02:37,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:37,735 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, 1, 1, 1, 1] [2022-11-19 07:02:37,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:02:37,736 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)] === [2022-11-19 07:02:37,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:37,736 INFO L85 PathProgramCache]: Analyzing trace with hash -935425513, now seen corresponding path program 1 times [2022-11-19 07:02:37,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:37,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201193639] [2022-11-19 07:02:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:37,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-19 07:02:40,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:40,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201193639] [2022-11-19 07:02:40,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201193639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:02:40,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:02:40,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:02:40,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658728401] [2022-11-19 07:02:40,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:02:40,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:02:40,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:40,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:02:40,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:02:40,827 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) [2022-11-19 07:02:43,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:02:49,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:02:51,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:51,361 INFO L93 Difference]: Finished difference Result 30072 states and 42119 transitions. [2022-11-19 07:02:51,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:02:51,361 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 213 [2022-11-19 07:02:51,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:51,492 INFO L225 Difference]: With dead ends: 30072 [2022-11-19 07:02:51,492 INFO L226 Difference]: Without dead ends: 30070 [2022-11-19 07:02:51,508 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 [2022-11-19 07:02:51,509 INFO L413 NwaCegarLoop]: 2053 mSDtfsCounter, 2341 mSDsluCounter, 4087 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2351 SdHoareTripleChecker+Valid, 6140 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:51,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2351 Valid, 6140 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1075 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-11-19 07:02:51,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30070 states. [2022-11-19 07:02:53,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30070 to 30070. [2022-11-19 07:02:53,196 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) [2022-11-19 07:02:53,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30070 states to 30070 states and 42117 transitions. [2022-11-19 07:02:53,323 INFO L78 Accepts]: Start accepts. Automaton has 30070 states and 42117 transitions. Word has length 213 [2022-11-19 07:02:53,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:53,324 INFO L495 AbstractCegarLoop]: Abstraction has 30070 states and 42117 transitions. [2022-11-19 07:02:53,324 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) [2022-11-19 07:02:53,324 INFO L276 IsEmpty]: Start isEmpty. Operand 30070 states and 42117 transitions. [2022-11-19 07:02:53,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-19 07:02:53,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:53,332 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:02:53,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:02:53,332 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)] === [2022-11-19 07:02:53,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:53,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1442721036, now seen corresponding path program 1 times [2022-11-19 07:02:53,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:53,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050145209] [2022-11-19 07:02:53,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:53,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2022-11-19 07:02:56,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:56,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050145209] [2022-11-19 07:02:56,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050145209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:02:56,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:02:56,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:02:56,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604651378] [2022-11-19 07:02:56,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:02:56,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:02:56,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:56,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:02:56,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:02:56,376 INFO L87 Difference]: Start difference. First operand 30070 states and 42117 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-19 07:02:58,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:03:06,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:06,501 INFO L93 Difference]: Finished difference Result 30076 states and 42122 transitions. [2022-11-19 07:03:06,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:03:06,502 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 218 [2022-11-19 07:03:06,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:06,716 INFO L225 Difference]: With dead ends: 30076 [2022-11-19 07:03:06,717 INFO L226 Difference]: Without dead ends: 30074 [2022-11-19 07:03:06,730 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 [2022-11-19 07:03:06,730 INFO L413 NwaCegarLoop]: 2053 mSDtfsCounter, 2341 mSDsluCounter, 4087 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2350 SdHoareTripleChecker+Valid, 6140 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:06,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2350 Valid, 6140 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1075 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-11-19 07:03:06,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30074 states. [2022-11-19 07:03:08,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30074 to 30074. [2022-11-19 07:03:08,899 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) [2022-11-19 07:03:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30074 states to 30074 states and 42120 transitions. [2022-11-19 07:03:09,128 INFO L78 Accepts]: Start accepts. Automaton has 30074 states and 42120 transitions. Word has length 218 [2022-11-19 07:03:09,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:09,129 INFO L495 AbstractCegarLoop]: Abstraction has 30074 states and 42120 transitions. [2022-11-19 07:03:09,129 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-19 07:03:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand 30074 states and 42120 transitions. [2022-11-19 07:03:09,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-19 07:03:09,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:09,135 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:03:09,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:03:09,136 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)] === [2022-11-19 07:03:09,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:09,136 INFO L85 PathProgramCache]: Analyzing trace with hash 827425713, now seen corresponding path program 1 times [2022-11-19 07:03:09,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:09,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021057560] [2022-11-19 07:03:09,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:09,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:11,791 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2022-11-19 07:03:11,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:11,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021057560] [2022-11-19 07:03:11,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021057560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:11,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:11,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:03:11,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101818725] [2022-11-19 07:03:11,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:11,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:03:11,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:11,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:03:11,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:03:11,794 INFO L87 Difference]: Start difference. First operand 30074 states and 42120 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, (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) [2022-11-19 07:03:13,917 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 [] [2022-11-19 07:03:21,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:21,979 INFO L93 Difference]: Finished difference Result 30080 states and 42125 transitions. [2022-11-19 07:03:21,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:03:21,980 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, (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 222 [2022-11-19 07:03:21,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:22,075 INFO L225 Difference]: With dead ends: 30080 [2022-11-19 07:03:22,075 INFO L226 Difference]: Without dead ends: 30078 [2022-11-19 07:03:22,085 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 [2022-11-19 07:03:22,085 INFO L413 NwaCegarLoop]: 2053 mSDtfsCounter, 2342 mSDsluCounter, 4087 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2350 SdHoareTripleChecker+Valid, 6140 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:22,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2350 Valid, 6140 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1075 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-11-19 07:03:22,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30078 states. [2022-11-19 07:03:23,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30078 to 30078. [2022-11-19 07:03:23,829 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) [2022-11-19 07:03:23,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30078 states to 30078 states and 42123 transitions. [2022-11-19 07:03:23,920 INFO L78 Accepts]: Start accepts. Automaton has 30078 states and 42123 transitions. Word has length 222 [2022-11-19 07:03:23,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:23,920 INFO L495 AbstractCegarLoop]: Abstraction has 30078 states and 42123 transitions. [2022-11-19 07:03:23,920 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, (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) [2022-11-19 07:03:23,921 INFO L276 IsEmpty]: Start isEmpty. Operand 30078 states and 42123 transitions. [2022-11-19 07:03:23,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-19 07:03:23,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:23,927 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:03:23,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:03:23,928 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)] === [2022-11-19 07:03:23,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:23,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1243393230, now seen corresponding path program 1 times [2022-11-19 07:03:23,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:23,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703837344] [2022-11-19 07:03:23,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:23,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 905 trivial. 0 not checked. [2022-11-19 07:03:26,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:26,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703837344] [2022-11-19 07:03:26,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703837344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:26,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:26,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:03:26,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868246772] [2022-11-19 07:03:26,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:26,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:03:26,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:26,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:03:26,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:03:26,492 INFO L87 Difference]: Start difference. First operand 30078 states and 42123 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-19 07:03:28,612 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 [] [2022-11-19 07:03:35,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:35,988 INFO L93 Difference]: Finished difference Result 30084 states and 42128 transitions. [2022-11-19 07:03:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:03:35,988 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 227 [2022-11-19 07:03:35,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:36,081 INFO L225 Difference]: With dead ends: 30084 [2022-11-19 07:03:36,082 INFO L226 Difference]: Without dead ends: 30082 [2022-11-19 07:03:36,090 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 [2022-11-19 07:03:36,091 INFO L413 NwaCegarLoop]: 2053 mSDtfsCounter, 2342 mSDsluCounter, 4087 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 6140 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:36,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2349 Valid, 6140 Invalid, 1077 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1075 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-19 07:03:36,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30082 states. [2022-11-19 07:03:37,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30082 to 30082. [2022-11-19 07:03:37,783 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) [2022-11-19 07:03:37,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30082 states to 30082 states and 42126 transitions. [2022-11-19 07:03:37,871 INFO L78 Accepts]: Start accepts. Automaton has 30082 states and 42126 transitions. Word has length 227 [2022-11-19 07:03:37,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:37,871 INFO L495 AbstractCegarLoop]: Abstraction has 30082 states and 42126 transitions. [2022-11-19 07:03:37,872 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-19 07:03:37,872 INFO L276 IsEmpty]: Start isEmpty. Operand 30082 states and 42126 transitions. [2022-11-19 07:03:37,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-19 07:03:37,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:37,878 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] [2022-11-19 07:03:37,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:03:37,879 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)] === [2022-11-19 07:03:37,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:37,880 INFO L85 PathProgramCache]: Analyzing trace with hash -545198923, now seen corresponding path program 1 times [2022-11-19 07:03:37,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:37,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358688892] [2022-11-19 07:03:37,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:37,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:39,516 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2022-11-19 07:03:39,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:39,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358688892] [2022-11-19 07:03:39,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358688892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:39,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:39,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:03:39,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161637538] [2022-11-19 07:03:39,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:39,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:03:39,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:39,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:03:39,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:03:39,519 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) [2022-11-19 07:03:41,641 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 [] [2022-11-19 07:03:49,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:49,715 INFO L93 Difference]: Finished difference Result 86528 states and 121244 transitions. [2022-11-19 07:03:49,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:03:49,716 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 [2022-11-19 07:03:49,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:49,915 INFO L225 Difference]: With dead ends: 86528 [2022-11-19 07:03:49,916 INFO L226 Difference]: Without dead ends: 56475 [2022-11-19 07:03:50,017 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 [2022-11-19 07:03:50,018 INFO L413 NwaCegarLoop]: 2648 mSDtfsCounter, 2334 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 4693 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:50,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2334 Valid, 4693 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 721 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-19 07:03:50,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56475 states. [2022-11-19 07:03:53,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56475 to 56382. [2022-11-19 07:03:53,550 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) [2022-11-19 07:03:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56382 states to 56382 states and 78965 transitions. [2022-11-19 07:03:53,888 INFO L78 Accepts]: Start accepts. Automaton has 56382 states and 78965 transitions. Word has length 249 [2022-11-19 07:03:53,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:53,889 INFO L495 AbstractCegarLoop]: Abstraction has 56382 states and 78965 transitions. [2022-11-19 07:03:53,889 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) [2022-11-19 07:03:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand 56382 states and 78965 transitions. [2022-11-19 07:03:53,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-19 07:03:53,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:53,895 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] [2022-11-19 07:03:53,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:03:53,895 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)] === [2022-11-19 07:03:53,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:53,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1557793833, now seen corresponding path program 1 times [2022-11-19 07:03:53,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:53,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409315303] [2022-11-19 07:03:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:53,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:56,345 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2022-11-19 07:03:56,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:56,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409315303] [2022-11-19 07:03:56,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409315303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:56,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:56,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:03:56,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336968903] [2022-11-19 07:03:56,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:56,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:03:56,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:56,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:03:56,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:03:56,348 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)