./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-calxeda-xgmac.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_4970001c-88f7-4000-b774-cc5e53680ee9/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4970001c-88f7-4000-b774-cc5e53680ee9/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_4970001c-88f7-4000-b774-cc5e53680ee9/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4970001c-88f7-4000-b774-cc5e53680ee9/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4970001c-88f7-4000-b774-cc5e53680ee9/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_4970001c-88f7-4000-b774-cc5e53680ee9/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 3fe54d83d46de95e8e0767545626d085bd64ef94fa067827f6d89c4bc8eb39d0 --- 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 07:51:58,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:51:58,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:51:58,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:51:58,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:51:58,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:51:58,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:51:58,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:51:58,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:51:58,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:51:58,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:51:58,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:51:58,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:51:58,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:51:58,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:51:58,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:51:58,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:51:58,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:51:58,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:51:58,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:51:58,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:51:58,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:51:58,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:51:58,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:51:58,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:51:58,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:51:58,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:51:58,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:51:58,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:51:58,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:51:58,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:51:58,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:51:58,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:51:58,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:51:58,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:51:58,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:51:58,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:51:58,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:51:58,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:51:58,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:51:58,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:51:58,315 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4970001c-88f7-4000-b774-cc5e53680ee9/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:51:58,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:51:58,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:51:58,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:51:58,360 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:51:58,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:51:58,361 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:51:58,361 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:51:58,362 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:51:58,362 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:51:58,362 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:51:58,363 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:51:58,364 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:51:58,364 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:51:58,364 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:51:58,364 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:51:58,365 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:51:58,365 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:51:58,365 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:51:58,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:51:58,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:51:58,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:51:58,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:51:58,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:51:58,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:51:58,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:51:58,367 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:51:58,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:51:58,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:51:58,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:51:58,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:51:58,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:51:58,371 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:51:58,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:51:58,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:51:58,371 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:51:58,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:51:58,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:51:58,372 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:51:58,372 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_4970001c-88f7-4000-b774-cc5e53680ee9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4970001c-88f7-4000-b774-cc5e53680ee9/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fe54d83d46de95e8e0767545626d085bd64ef94fa067827f6d89c4bc8eb39d0 [2022-11-19 07:51:58,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:51:58,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:51:58,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:51:58,738 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:51:58,739 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:51:58,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4970001c-88f7-4000-b774-cc5e53680ee9/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2022-11-19 07:51:58,839 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4970001c-88f7-4000-b774-cc5e53680ee9/bin/utaipan-I9t0OCRTmS/data/588ef6faa/249f08c4e3514b1d91f354f212fa3425/FLAG05445f238 [2022-11-19 07:51:59,881 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:51:59,882 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4970001c-88f7-4000-b774-cc5e53680ee9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2022-11-19 07:51:59,948 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4970001c-88f7-4000-b774-cc5e53680ee9/bin/utaipan-I9t0OCRTmS/data/588ef6faa/249f08c4e3514b1d91f354f212fa3425/FLAG05445f238 [2022-11-19 07:52:00,198 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4970001c-88f7-4000-b774-cc5e53680ee9/bin/utaipan-I9t0OCRTmS/data/588ef6faa/249f08c4e3514b1d91f354f212fa3425 [2022-11-19 07:52:00,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:52:00,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:52:00,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:52:00,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:52:00,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:52:00,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:52:00" (1/1) ... [2022-11-19 07:52:00,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e111ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:00, skipping insertion in model container [2022-11-19 07:52:00,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:52:00" (1/1) ... [2022-11-19 07:52:00,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:52:00,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:52:04,094 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_4970001c-88f7-4000-b774-cc5e53680ee9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358326,358339] [2022-11-19 07:52:04,100 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_4970001c-88f7-4000-b774-cc5e53680ee9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358495,358508] [2022-11-19 07:52:04,100 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_4970001c-88f7-4000-b774-cc5e53680ee9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358662,358675] [2022-11-19 07:52:04,101 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_4970001c-88f7-4000-b774-cc5e53680ee9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358830,358843] [2022-11-19 07:52:04,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:52:04,190 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:52:04,624 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_4970001c-88f7-4000-b774-cc5e53680ee9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358326,358339] [2022-11-19 07:52:04,625 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_4970001c-88f7-4000-b774-cc5e53680ee9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358495,358508] [2022-11-19 07:52:04,625 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_4970001c-88f7-4000-b774-cc5e53680ee9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358662,358675] [2022-11-19 07:52:04,626 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_4970001c-88f7-4000-b774-cc5e53680ee9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358830,358843] [2022-11-19 07:52:04,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:52:04,947 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:52:04,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:04 WrapperNode [2022-11-19 07:52:04,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:52:04,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:52:04,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:52:04,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:52:04,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:04" (1/1) ... [2022-11-19 07:52:05,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:04" (1/1) ... [2022-11-19 07:52:05,296 INFO L138 Inliner]: procedures = 502, calls = 2414, calls flagged for inlining = 253, calls inlined = 226, statements flattened = 5517 [2022-11-19 07:52:05,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:52:05,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:52:05,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:52:05,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:52:05,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:04" (1/1) ... [2022-11-19 07:52:05,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:04" (1/1) ... [2022-11-19 07:52:05,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:04" (1/1) ... [2022-11-19 07:52:05,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:04" (1/1) ... [2022-11-19 07:52:05,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:04" (1/1) ... [2022-11-19 07:52:05,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:04" (1/1) ... [2022-11-19 07:52:05,720 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:04" (1/1) ... [2022-11-19 07:52:05,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:04" (1/1) ... [2022-11-19 07:52:05,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:52:05,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:52:05,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:52:05,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:52:05,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:04" (1/1) ... [2022-11-19 07:52:05,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:52:05,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4970001c-88f7-4000-b774-cc5e53680ee9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:52:05,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4970001c-88f7-4000-b774-cc5e53680ee9/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:52:05,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4970001c-88f7-4000-b774-cc5e53680ee9/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:52:05,876 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2022-11-19 07:52:05,876 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2022-11-19 07:52:05,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:52:05,877 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:52:05,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2022-11-19 07:52:05,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2022-11-19 07:52:05,877 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_buf_addr [2022-11-19 07:52:05,877 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_buf_addr [2022-11-19 07:52:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 07:52:05,878 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 07:52:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:52:05,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:52:05,879 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_interrupt [2022-11-19 07:52:05,879 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_interrupt [2022-11-19 07:52:05,879 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 07:52:05,879 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 07:52:05,879 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_rx_refill [2022-11-19 07:52:05,880 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_rx_refill [2022-11-19 07:52:05,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 07:52:05,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 07:52:05,880 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2022-11-19 07:52:05,880 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2022-11-19 07:52:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 07:52:05,881 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 07:52:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 07:52:05,882 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 07:52:05,882 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_poll_controller [2022-11-19 07:52:05,882 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_poll_controller [2022-11-19 07:52:05,882 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-19 07:52:05,882 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-19 07:52:05,883 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_set_mac_addr [2022-11-19 07:52:05,883 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_set_mac_addr [2022-11-19 07:52:05,883 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_unlock [2022-11-19 07:52:05,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_unlock [2022-11-19 07:52:05,884 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_tx_timeout [2022-11-19 07:52:05,884 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_tx_timeout [2022-11-19 07:52:05,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 07:52:05,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 07:52:05,885 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 07:52:05,885 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 07:52:05,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 07:52:05,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 07:52:05,886 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2022-11-19 07:52:05,887 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2022-11-19 07:52:05,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:52:05,888 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-19 07:52:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-19 07:52:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:52:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:52:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 07:52:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 07:52:05,890 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_buf_addr_and_size [2022-11-19 07:52:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_buf_addr_and_size [2022-11-19 07:52:05,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:52:05,891 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 07:52:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 07:52:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_probe [2022-11-19 07:52:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_probe [2022-11-19 07:52:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:52:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 07:52:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 07:52:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:52:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_buf_len [2022-11-19 07:52:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_buf_len [2022-11-19 07:52:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 07:52:05,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 07:52:05,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:52:05,895 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:52:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 07:52:05,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 07:52:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 07:52:05,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 07:52:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_suspend [2022-11-19 07:52:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_suspend [2022-11-19 07:52:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_lock [2022-11-19 07:52:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_lock [2022-11-19 07:52:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_open [2022-11-19 07:52:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_open [2022-11-19 07:52:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_buf_len [2022-11-19 07:52:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_buf_len [2022-11-19 07:52:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2022-11-19 07:52:05,898 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2022-11-19 07:52:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 07:52:05,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 07:52:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:52:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 07:52:05,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 07:52:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-19 07:52:05,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-19 07:52:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-19 07:52:05,902 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-19 07:52:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:52:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_pmt [2022-11-19 07:52:05,902 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_pmt [2022-11-19 07:52:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-19 07:52:05,903 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-19 07:52:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 07:52:05,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 07:52:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:52:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_free_tx_skbufs [2022-11-19 07:52:05,904 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_free_tx_skbufs [2022-11-19 07:52:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 07:52:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:52:05,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:52:05,906 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:52:05,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:52:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2022-11-19 07:52:05,911 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2022-11-19 07:52:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-19 07:52:05,911 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-19 07:52:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-19 07:52:05,913 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-19 07:52:05,913 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:52:05,914 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:52:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 07:52:05,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 07:52:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2022-11-19 07:52:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2022-11-19 07:52:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-19 07:52:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-19 07:52:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-19 07:52:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-19 07:52:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 07:52:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 07:52:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:52:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:52:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_mac_disable [2022-11-19 07:52:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_mac_disable [2022-11-19 07:52:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:52:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:52:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:52:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:52:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure desc_init_tx_desc [2022-11-19 07:52:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_init_tx_desc [2022-11-19 07:52:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 07:52:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 07:52:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 07:52:05,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 07:52:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-19 07:52:05,923 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-19 07:52:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-19 07:52:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-19 07:52:05,924 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-19 07:52:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 07:52:05,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 07:52:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2022-11-19 07:52:05,924 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2022-11-19 07:52:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:52:05,924 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:52:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2022-11-19 07:52:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2022-11-19 07:52:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-19 07:52:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-19 07:52:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-19 07:52:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-19 07:52:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_mac_enable [2022-11-19 07:52:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_mac_enable [2022-11-19 07:52:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 07:52:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 07:52:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-19 07:52:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-19 07:52:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:52:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_stop [2022-11-19 07:52:05,927 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_stop [2022-11-19 07:52:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_tx_owner [2022-11-19 07:52:05,927 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_tx_owner [2022-11-19 07:52:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 07:52:05,928 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 07:52:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_irq [2022-11-19 07:52:05,928 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_irq [2022-11-19 07:52:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:52:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:52:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 07:52:05,929 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 07:52:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-19 07:52:05,930 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-19 07:52:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:52:05,930 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:52:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-19 07:52:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-19 07:52:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 07:52:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 07:52:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-19 07:52:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-19 07:52:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_set_flow_ctrl [2022-11-19 07:52:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_set_flow_ctrl [2022-11-19 07:52:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 07:52:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 07:52:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_resume [2022-11-19 07:52:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_resume [2022-11-19 07:52:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-19 07:52:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-19 07:52:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 07:52:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 07:52:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:52:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:52:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure irq_set_irq_wake [2022-11-19 07:52:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure irq_set_irq_wake [2022-11-19 07:52:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_tx_fs [2022-11-19 07:52:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_tx_fs [2022-11-19 07:52:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 07:52:05,936 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 07:52:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_set_rx_mode [2022-11-19 07:52:05,936 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_set_rx_mode [2022-11-19 07:52:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-19 07:52:05,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-19 07:52:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:52:05,937 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:52:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:52:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:52:05,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:52:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-19 07:52:05,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-19 07:52:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 07:52:05,938 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 07:52:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-19 07:52:05,938 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-19 07:52:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-19 07:52:05,938 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-19 07:52:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure __readl [2022-11-19 07:52:05,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __readl [2022-11-19 07:52:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 07:52:05,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 07:52:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-19 07:52:05,939 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-19 07:52:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-19 07:52:05,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-19 07:52:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure __writel [2022-11-19 07:52:05,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __writel [2022-11-19 07:52:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2022-11-19 07:52:05,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2022-11-19 07:52:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 07:52:05,946 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 07:52:05,946 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-19 07:52:05,946 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-19 07:52:05,946 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-19 07:52:05,947 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-19 07:52:05,947 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_remove [2022-11-19 07:52:05,947 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_remove [2022-11-19 07:52:05,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:52:05,947 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_buf_addr [2022-11-19 07:52:05,948 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_buf_addr [2022-11-19 07:52:05,949 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-19 07:52:05,950 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-19 07:52:05,950 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2022-11-19 07:52:05,950 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2022-11-19 07:52:05,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 07:52:05,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 07:52:05,950 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_tx_ls [2022-11-19 07:52:05,950 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_tx_ls [2022-11-19 07:52:07,000 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:52:07,004 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:52:07,696 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:59:12,244 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 07:59:12,356 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:59:16,464 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:59:16,464 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-19 07:59:16,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:16 BoogieIcfgContainer [2022-11-19 07:59:16,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:59:16,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:59:16,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:59:16,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:59:16,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:52:00" (1/3) ... [2022-11-19 07:59:16,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7345b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:16, skipping insertion in model container [2022-11-19 07:59:16,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:04" (2/3) ... [2022-11-19 07:59:16,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7345b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:16, skipping insertion in model container [2022-11-19 07:59:16,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:16" (3/3) ... [2022-11-19 07:59:16,491 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2022-11-19 07:59:16,522 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:59:16,522 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 07:59:16,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:59:16,671 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;@2fa3e43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:59:16,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 07:59:16,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 1536 states, 890 states have (on average 1.2651685393258427) internal successors, (1126), 911 states have internal predecessors, (1126), 528 states have call successors, (528), 116 states have call predecessors, (528), 115 states have return successors, (521), 516 states have call predecessors, (521), 521 states have call successors, (521) [2022-11-19 07:59:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-19 07:59:16,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:16,708 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:16,709 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 07:59:16,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:16,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1685340790, now seen corresponding path program 1 times [2022-11-19 07:59:16,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:16,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699592498] [2022-11-19 07:59:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:16,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:19,688 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-19 07:59:19,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:19,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699592498] [2022-11-19 07:59:19,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699592498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:19,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:19,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:59:19,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903515852] [2022-11-19 07:59:19,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:19,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:59:19,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:19,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:59:19,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:59:19,761 INFO L87 Difference]: Start difference. First operand has 1536 states, 890 states have (on average 1.2651685393258427) internal successors, (1126), 911 states have internal predecessors, (1126), 528 states have call successors, (528), 116 states have call predecessors, (528), 115 states have return successors, (521), 516 states have call predecessors, (521), 521 states have call successors, (521) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 07:59:21,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:59:28,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:59:29,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:29,228 INFO L93 Difference]: Finished difference Result 4489 states and 6433 transitions. [2022-11-19 07:59:29,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:59:29,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2022-11-19 07:59:29,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:29,280 INFO L225 Difference]: With dead ends: 4489 [2022-11-19 07:59:29,280 INFO L226 Difference]: Without dead ends: 2968 [2022-11-19 07:59:29,297 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 07:59:29,301 INFO L413 NwaCegarLoop]: 2330 mSDtfsCounter, 2071 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 4141 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:29,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2071 Valid, 4141 Invalid, 668 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 664 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-11-19 07:59:29,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2022-11-19 07:59:29,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2964. [2022-11-19 07:59:29,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 1730 states have (on average 1.2595375722543352) internal successors, (2179), 1770 states have internal predecessors, (2179), 1004 states have call successors, (1004), 228 states have call predecessors, (1004), 227 states have return successors, (1001), 991 states have call predecessors, (1001), 1001 states have call successors, (1001) [2022-11-19 07:59:29,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 4184 transitions. [2022-11-19 07:59:29,684 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 4184 transitions. Word has length 147 [2022-11-19 07:59:29,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:29,690 INFO L495 AbstractCegarLoop]: Abstraction has 2964 states and 4184 transitions. [2022-11-19 07:59:29,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 07:59:29,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 4184 transitions. [2022-11-19 07:59:29,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-19 07:59:29,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:29,711 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:29,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:59:29,713 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 07:59:29,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:29,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1571262010, now seen corresponding path program 1 times [2022-11-19 07:59:29,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:29,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714225141] [2022-11-19 07:59:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:29,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:31,513 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-19 07:59:31,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:31,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714225141] [2022-11-19 07:59:31,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714225141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:31,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:31,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:59:31,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794475443] [2022-11-19 07:59:31,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:31,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:59:31,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:31,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:59:31,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:59:31,518 INFO L87 Difference]: Start difference. First operand 2964 states and 4184 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 07:59:33,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:59:35,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:59:41,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:41,953 INFO L93 Difference]: Finished difference Result 8240 states and 11620 transitions. [2022-11-19 07:59:41,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:59:41,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 161 [2022-11-19 07:59:41,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:41,998 INFO L225 Difference]: With dead ends: 8240 [2022-11-19 07:59:41,998 INFO L226 Difference]: Without dead ends: 5303 [2022-11-19 07:59:42,015 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 07:59:42,016 INFO L413 NwaCegarLoop]: 2233 mSDtfsCounter, 1670 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1670 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:42,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1670 Valid, 4000 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 707 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-11-19 07:59:42,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5303 states. [2022-11-19 07:59:42,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5303 to 5274. [2022-11-19 07:59:42,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5274 states, 3077 states have (on average 1.2512187195320117) internal successors, (3850), 3151 states have internal predecessors, (3850), 1757 states have call successors, (1757), 440 states have call predecessors, (1757), 437 states have return successors, (1822), 1724 states have call predecessors, (1822), 1754 states have call successors, (1822) [2022-11-19 07:59:42,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 7429 transitions. [2022-11-19 07:59:42,371 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 7429 transitions. Word has length 161 [2022-11-19 07:59:42,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:42,374 INFO L495 AbstractCegarLoop]: Abstraction has 5274 states and 7429 transitions. [2022-11-19 07:59:42,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 07:59:42,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 7429 transitions. [2022-11-19 07:59:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-19 07:59:42,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:42,383 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:42,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:59:42,388 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 07:59:42,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:42,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1592392072, now seen corresponding path program 1 times [2022-11-19 07:59:42,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:42,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597849006] [2022-11-19 07:59:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:42,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:44,281 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-19 07:59:44,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:44,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597849006] [2022-11-19 07:59:44,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597849006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:44,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:44,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:59:44,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298233797] [2022-11-19 07:59:44,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:44,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:59:44,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:44,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:59:44,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:59:44,284 INFO L87 Difference]: Start difference. First operand 5274 states and 7429 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-19 07:59:46,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:59:53,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:53,564 INFO L93 Difference]: Finished difference Result 14636 states and 20487 transitions. [2022-11-19 07:59:53,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:59:53,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 172 [2022-11-19 07:59:53,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:53,646 INFO L225 Difference]: With dead ends: 14636 [2022-11-19 07:59:53,646 INFO L226 Difference]: Without dead ends: 9389 [2022-11-19 07:59:53,681 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 07:59:53,689 INFO L413 NwaCegarLoop]: 2655 mSDtfsCounter, 1689 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 4419 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:53,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 4419 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 837 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-11-19 07:59:53,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9389 states. [2022-11-19 07:59:54,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9389 to 9356. [2022-11-19 07:59:54,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9356 states, 5429 states have (on average 1.2319027445201696) internal successors, (6688), 5565 states have internal predecessors, (6688), 3095 states have call successors, (3095), 834 states have call predecessors, (3095), 829 states have return successors, (3162), 3032 states have call predecessors, (3162), 3092 states have call successors, (3162) [2022-11-19 07:59:54,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9356 states to 9356 states and 12945 transitions. [2022-11-19 07:59:54,406 INFO L78 Accepts]: Start accepts. Automaton has 9356 states and 12945 transitions. Word has length 172 [2022-11-19 07:59:54,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:54,408 INFO L495 AbstractCegarLoop]: Abstraction has 9356 states and 12945 transitions. [2022-11-19 07:59:54,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-19 07:59:54,410 INFO L276 IsEmpty]: Start isEmpty. Operand 9356 states and 12945 transitions. [2022-11-19 07:59:54,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-19 07:59:54,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:54,575 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:54,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:59:54,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === 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 07:59:54,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:54,579 INFO L85 PathProgramCache]: Analyzing trace with hash -475487494, now seen corresponding path program 1 times [2022-11-19 07:59:54,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:54,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075448517] [2022-11-19 07:59:54,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:54,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:57,612 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-11-19 07:59:57,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:57,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075448517] [2022-11-19 07:59:57,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075448517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:57,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:57,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:59:57,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523729673] [2022-11-19 07:59:57,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:57,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:59:57,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:57,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:59:57,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:59:57,616 INFO L87 Difference]: Start difference. First operand 9356 states and 12945 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:59:59,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:00:06,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:00:09,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:00:09,197 INFO L93 Difference]: Finished difference Result 9512 states and 13083 transitions. [2022-11-19 08:00:09,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:00:09,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 185 [2022-11-19 08:00:09,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:00:09,284 INFO L225 Difference]: With dead ends: 9512 [2022-11-19 08:00:09,284 INFO L226 Difference]: Without dead ends: 9510 [2022-11-19 08:00:09,292 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 08:00:09,298 INFO L413 NwaCegarLoop]: 1835 mSDtfsCounter, 2078 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 5529 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:00:09,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2089 Valid, 5529 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1015 Invalid, 2 Unknown, 0 Unchecked, 11.0s Time] [2022-11-19 08:00:09,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9510 states. [2022-11-19 08:00:10,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9510 to 9508. [2022-11-19 08:00:10,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9508 states, 5518 states have (on average 1.230699528814788) internal successors, (6791), 5662 states have internal predecessors, (6791), 3111 states have call successors, (3111), 881 states have call predecessors, (3111), 876 states have return successors, (3178), 3048 states have call predecessors, (3178), 3108 states have call successors, (3178) [2022-11-19 08:00:10,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9508 states to 9508 states and 13080 transitions. [2022-11-19 08:00:10,243 INFO L78 Accepts]: Start accepts. Automaton has 9508 states and 13080 transitions. Word has length 185 [2022-11-19 08:00:10,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:00:10,244 INFO L495 AbstractCegarLoop]: Abstraction has 9508 states and 13080 transitions. [2022-11-19 08:00:10,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 08:00:10,244 INFO L276 IsEmpty]: Start isEmpty. Operand 9508 states and 13080 transitions. [2022-11-19 08:00:10,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-19 08:00:10,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:00:10,253 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 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] [2022-11-19 08:00:10,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:00:10,254 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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 08:00:10,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:00:10,255 INFO L85 PathProgramCache]: Analyzing trace with hash 898154610, now seen corresponding path program 1 times [2022-11-19 08:00:10,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:00:10,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485329871] [2022-11-19 08:00:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:00:10,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:00:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-11-19 08:00:13,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:00:13,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485329871] [2022-11-19 08:00:13,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485329871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:00:13,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:00:13,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:00:13,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593155737] [2022-11-19 08:00:13,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:00:13,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:00:13,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:00:13,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:00:13,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:00:13,851 INFO L87 Difference]: Start difference. First operand 9508 states and 13080 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-19 08:00:16,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:00:22,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:00:25,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:00:25,276 INFO L93 Difference]: Finished difference Result 11548 states and 15537 transitions. [2022-11-19 08:00:25,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:00:25,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 190 [2022-11-19 08:00:25,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:00:25,350 INFO L225 Difference]: With dead ends: 11548 [2022-11-19 08:00:25,350 INFO L226 Difference]: Without dead ends: 11546 [2022-11-19 08:00:25,359 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 08:00:25,360 INFO L413 NwaCegarLoop]: 1919 mSDtfsCounter, 1940 mSDsluCounter, 4272 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1952 SdHoareTripleChecker+Valid, 6191 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:00:25,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1952 Valid, 6191 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1095 Invalid, 2 Unknown, 0 Unchecked, 10.8s Time] [2022-11-19 08:00:25,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11546 states. [2022-11-19 08:00:26,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11546 to 11534. [2022-11-19 08:00:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11534 states, 6583 states have (on average 1.2131247151754518) internal successors, (7986), 6755 states have internal predecessors, (7986), 3731 states have call successors, (3731), 1218 states have call predecessors, (3731), 1217 states have return successors, (3804), 3658 states have call predecessors, (3804), 3728 states have call successors, (3804) [2022-11-19 08:00:26,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11534 states to 11534 states and 15521 transitions. [2022-11-19 08:00:26,213 INFO L78 Accepts]: Start accepts. Automaton has 11534 states and 15521 transitions. Word has length 190 [2022-11-19 08:00:26,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:00:26,217 INFO L495 AbstractCegarLoop]: Abstraction has 11534 states and 15521 transitions. [2022-11-19 08:00:26,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-19 08:00:26,217 INFO L276 IsEmpty]: Start isEmpty. Operand 11534 states and 15521 transitions. [2022-11-19 08:00:26,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-19 08:00:26,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:00:26,225 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:00:26,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:00:26,226 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 08:00:26,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:00:26,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1494574522, now seen corresponding path program 1 times [2022-11-19 08:00:26,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:00:26,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903939781] [2022-11-19 08:00:26,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:00:26,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:00:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-19 08:00:29,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:00:29,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903939781] [2022-11-19 08:00:29,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903939781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:00:29,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:00:29,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:00:29,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342079247] [2022-11-19 08:00:29,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:00:29,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:00:29,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:00:29,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:00:29,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:00:29,179 INFO L87 Difference]: Start difference. First operand 11534 states and 15521 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-19 08:00:31,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:00:36,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:00:38,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:00:41,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:00:41,213 INFO L93 Difference]: Finished difference Result 11540 states and 15526 transitions. [2022-11-19 08:00:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:00:41,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 195 [2022-11-19 08:00:41,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:00:41,280 INFO L225 Difference]: With dead ends: 11540 [2022-11-19 08:00:41,281 INFO L226 Difference]: Without dead ends: 11538 [2022-11-19 08:00:41,290 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 08:00:41,291 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 2091 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:00:41,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2100 Valid, 5432 Invalid, 1008 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1006 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2022-11-19 08:00:41,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11538 states. [2022-11-19 08:00:42,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11538 to 11538. [2022-11-19 08:00:42,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11538 states, 6586 states have (on average 1.213027634375949) internal successors, (7989), 6758 states have internal predecessors, (7989), 3731 states have call successors, (3731), 1219 states have call predecessors, (3731), 1218 states have return successors, (3804), 3658 states have call predecessors, (3804), 3728 states have call successors, (3804) [2022-11-19 08:00:42,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11538 states to 11538 states and 15524 transitions. [2022-11-19 08:00:42,332 INFO L78 Accepts]: Start accepts. Automaton has 11538 states and 15524 transitions. Word has length 195 [2022-11-19 08:00:42,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:00:42,333 INFO L495 AbstractCegarLoop]: Abstraction has 11538 states and 15524 transitions. [2022-11-19 08:00:42,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-19 08:00:42,333 INFO L276 IsEmpty]: Start isEmpty. Operand 11538 states and 15524 transitions. [2022-11-19 08:00:42,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-19 08:00:42,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:00:42,339 INFO L195 NwaCegarLoop]: trace histogram [15, 13, 13, 13, 13, 13, 13, 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] [2022-11-19 08:00:42,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:00:42,340 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:00:42,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:00:42,340 INFO L85 PathProgramCache]: Analyzing trace with hash 613323240, now seen corresponding path program 1 times [2022-11-19 08:00:42,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:00:42,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704930966] [2022-11-19 08:00:42,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:00:42,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:00:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2022-11-19 08:00:43,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:00:43,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704930966] [2022-11-19 08:00:43,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704930966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:00:43,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:00:43,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:00:43,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808890006] [2022-11-19 08:00:43,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:00:43,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:00:43,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:00:43,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:00:43,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:00:43,975 INFO L87 Difference]: Start difference. First operand 11538 states and 15524 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 08:00:46,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:00:55,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:00:55,222 INFO L93 Difference]: Finished difference Result 21990 states and 29635 transitions. [2022-11-19 08:00:55,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:00:55,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 192 [2022-11-19 08:00:55,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:00:55,280 INFO L225 Difference]: With dead ends: 21990 [2022-11-19 08:00:55,280 INFO L226 Difference]: Without dead ends: 10479 [2022-11-19 08:00:55,331 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 08:00:55,331 INFO L413 NwaCegarLoop]: 3164 mSDtfsCounter, 2024 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 4957 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:00:55,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 4957 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 894 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-11-19 08:00:55,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10479 states. [2022-11-19 08:00:56,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10479 to 10439. [2022-11-19 08:00:56,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10439 states, 6036 states have (on average 1.2143803843605037) internal successors, (7330), 6195 states have internal predecessors, (7330), 3326 states have call successors, (3326), 1075 states have call predecessors, (3326), 1074 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-19 08:00:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10439 states to 10439 states and 14051 transitions. [2022-11-19 08:00:56,350 INFO L78 Accepts]: Start accepts. Automaton has 10439 states and 14051 transitions. Word has length 192 [2022-11-19 08:00:56,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:00:56,351 INFO L495 AbstractCegarLoop]: Abstraction has 10439 states and 14051 transitions. [2022-11-19 08:00:56,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 08:00:56,352 INFO L276 IsEmpty]: Start isEmpty. Operand 10439 states and 14051 transitions. [2022-11-19 08:00:56,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-19 08:00:56,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:00:56,358 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 4, 3, 3, 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] [2022-11-19 08:00:56,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:00:56,359 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 08:00:56,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:00:56,359 INFO L85 PathProgramCache]: Analyzing trace with hash 169141613, now seen corresponding path program 1 times [2022-11-19 08:00:56,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:00:56,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132196963] [2022-11-19 08:00:56,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:00:56,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:00:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2022-11-19 08:00:59,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:00:59,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132196963] [2022-11-19 08:00:59,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132196963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:00:59,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:00:59,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:00:59,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437611757] [2022-11-19 08:00:59,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:00:59,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:00:59,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:00:59,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:00:59,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:00:59,240 INFO L87 Difference]: Start difference. First operand 10439 states and 14051 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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 08:01:01,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:01:07,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:01:10,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:10,034 INFO L93 Difference]: Finished difference Result 10445 states and 14056 transitions. [2022-11-19 08:01:10,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:01:10,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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 209 [2022-11-19 08:01:10,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:10,087 INFO L225 Difference]: With dead ends: 10445 [2022-11-19 08:01:10,087 INFO L226 Difference]: Without dead ends: 10443 [2022-11-19 08:01:10,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:01:10,095 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 2087 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2095 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:10,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2095 Valid, 5432 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1006 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2022-11-19 08:01:10,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10443 states. [2022-11-19 08:01:10,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10443 to 10443. [2022-11-19 08:01:10,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10443 states, 6039 states have (on average 1.214273886405034) internal successors, (7333), 6198 states have internal predecessors, (7333), 3326 states have call successors, (3326), 1076 states have call predecessors, (3326), 1075 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-19 08:01:10,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10443 states to 10443 states and 14054 transitions. [2022-11-19 08:01:10,966 INFO L78 Accepts]: Start accepts. Automaton has 10443 states and 14054 transitions. Word has length 209 [2022-11-19 08:01:10,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:10,967 INFO L495 AbstractCegarLoop]: Abstraction has 10443 states and 14054 transitions. [2022-11-19 08:01:10,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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 08:01:10,968 INFO L276 IsEmpty]: Start isEmpty. Operand 10443 states and 14054 transitions. [2022-11-19 08:01:10,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-19 08:01:10,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:10,973 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:01:10,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:01:10,973 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 08:01:10,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:10,974 INFO L85 PathProgramCache]: Analyzing trace with hash 351234170, now seen corresponding path program 1 times [2022-11-19 08:01:10,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:01:10,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808879632] [2022-11-19 08:01:10,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:10,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:01:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2022-11-19 08:01:13,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:01:13,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808879632] [2022-11-19 08:01:13,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808879632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:13,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:13,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:01:13,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987412811] [2022-11-19 08:01:13,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:13,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:01:13,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:01:13,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:01:13,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:01:13,769 INFO L87 Difference]: Start difference. First operand 10443 states and 14054 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 08:01:15,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:01:21,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:01:24,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:24,847 INFO L93 Difference]: Finished difference Result 10449 states and 14059 transitions. [2022-11-19 08:01:24,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:01:24,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 205 [2022-11-19 08:01:24,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:24,899 INFO L225 Difference]: With dead ends: 10449 [2022-11-19 08:01:24,899 INFO L226 Difference]: Without dead ends: 10447 [2022-11-19 08:01:24,906 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 08:01:24,907 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 2091 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2098 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:24,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2098 Valid, 5432 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1006 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2022-11-19 08:01:24,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10447 states. [2022-11-19 08:01:25,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10447 to 10447. [2022-11-19 08:01:25,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10447 states, 6042 states have (on average 1.2141674942072163) internal successors, (7336), 6201 states have internal predecessors, (7336), 3326 states have call successors, (3326), 1077 states have call predecessors, (3326), 1076 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-19 08:01:25,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10447 states to 10447 states and 14057 transitions. [2022-11-19 08:01:25,761 INFO L78 Accepts]: Start accepts. Automaton has 10447 states and 14057 transitions. Word has length 205 [2022-11-19 08:01:25,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:25,762 INFO L495 AbstractCegarLoop]: Abstraction has 10447 states and 14057 transitions. [2022-11-19 08:01:25,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 08:01:25,763 INFO L276 IsEmpty]: Start isEmpty. Operand 10447 states and 14057 transitions. [2022-11-19 08:01:25,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-19 08:01:25,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:25,768 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:01:25,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:01:25,769 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 08:01:25,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:25,770 INFO L85 PathProgramCache]: Analyzing trace with hash -443168270, now seen corresponding path program 1 times [2022-11-19 08:01:25,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:01:25,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928012584] [2022-11-19 08:01:25,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:25,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:01:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2022-11-19 08:01:28,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:01:28,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928012584] [2022-11-19 08:01:28,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928012584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:28,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:28,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:01:28,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788636534] [2022-11-19 08:01:28,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:28,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:01:28,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:01:28,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:01:28,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:01:28,463 INFO L87 Difference]: Start difference. First operand 10447 states and 14057 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 08:01:30,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:01:37,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:01:40,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:40,775 INFO L93 Difference]: Finished difference Result 10462 states and 14072 transitions. [2022-11-19 08:01:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:01:40,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 210 [2022-11-19 08:01:40,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:40,826 INFO L225 Difference]: With dead ends: 10462 [2022-11-19 08:01:40,827 INFO L226 Difference]: Without dead ends: 10460 [2022-11-19 08:01:40,832 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 08:01:40,833 INFO L413 NwaCegarLoop]: 1919 mSDtfsCounter, 1940 mSDsluCounter, 4272 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1948 SdHoareTripleChecker+Valid, 6191 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:40,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1948 Valid, 6191 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1095 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2022-11-19 08:01:40,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10460 states. [2022-11-19 08:01:41,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10460 to 10451. [2022-11-19 08:01:41,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10451 states, 6045 states have (on average 1.2140612076095947) internal successors, (7339), 6204 states have internal predecessors, (7339), 3326 states have call successors, (3326), 1078 states have call predecessors, (3326), 1077 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-19 08:01:41,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10451 states to 10451 states and 14060 transitions. [2022-11-19 08:01:41,831 INFO L78 Accepts]: Start accepts. Automaton has 10451 states and 14060 transitions. Word has length 210 [2022-11-19 08:01:41,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:41,832 INFO L495 AbstractCegarLoop]: Abstraction has 10451 states and 14060 transitions. [2022-11-19 08:01:41,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 08:01:41,833 INFO L276 IsEmpty]: Start isEmpty. Operand 10451 states and 14060 transitions. [2022-11-19 08:01:41,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-19 08:01:41,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:41,839 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:01:41,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 08:01:41,840 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:01:41,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:41,840 INFO L85 PathProgramCache]: Analyzing trace with hash -542725318, now seen corresponding path program 1 times [2022-11-19 08:01:41,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:01:41,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134556669] [2022-11-19 08:01:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:41,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:01:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:44,545 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2022-11-19 08:01:44,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:01:44,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134556669] [2022-11-19 08:01:44,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134556669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:44,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:44,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:01:44,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216813562] [2022-11-19 08:01:44,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:44,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:01:44,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:01:44,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:01:44,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:01:44,548 INFO L87 Difference]: Start difference. First operand 10451 states and 14060 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 08:01:46,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:01:52,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:01:55,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:55,642 INFO L93 Difference]: Finished difference Result 10457 states and 14065 transitions. [2022-11-19 08:01:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:01:55,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 215 [2022-11-19 08:01:55,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:55,688 INFO L225 Difference]: With dead ends: 10457 [2022-11-19 08:01:55,689 INFO L226 Difference]: Without dead ends: 10455 [2022-11-19 08:01:55,693 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 08:01:55,694 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 2091 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:55,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2096 Valid, 5432 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1006 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-11-19 08:01:55,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10455 states. [2022-11-19 08:01:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10455 to 10455. [2022-11-19 08:01:56,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10455 states, 6048 states have (on average 1.2139550264550265) internal successors, (7342), 6207 states have internal predecessors, (7342), 3326 states have call successors, (3326), 1079 states have call predecessors, (3326), 1078 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-19 08:01:56,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10455 states to 10455 states and 14063 transitions. [2022-11-19 08:01:56,738 INFO L78 Accepts]: Start accepts. Automaton has 10455 states and 14063 transitions. Word has length 215 [2022-11-19 08:01:56,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:56,739 INFO L495 AbstractCegarLoop]: Abstraction has 10455 states and 14063 transitions. [2022-11-19 08:01:56,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 08:01:56,739 INFO L276 IsEmpty]: Start isEmpty. Operand 10455 states and 14063 transitions. [2022-11-19 08:01:56,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-19 08:01:56,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:56,746 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:01:56,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 08:01:56,747 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 08:01:56,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:56,747 INFO L85 PathProgramCache]: Analyzing trace with hash 485781170, now seen corresponding path program 1 times [2022-11-19 08:01:56,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:01:56,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965803274] [2022-11-19 08:01:56,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:56,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:01:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2022-11-19 08:01:59,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:01:59,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965803274] [2022-11-19 08:01:59,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965803274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:59,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:59,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:01:59,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812047369] [2022-11-19 08:01:59,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:59,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:01:59,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:01:59,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:01:59,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:01:59,066 INFO L87 Difference]: Start difference. First operand 10455 states and 14063 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-19 08:02:01,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:02:07,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:02:11,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:11,234 INFO L93 Difference]: Finished difference Result 10470 states and 14078 transitions. [2022-11-19 08:02:11,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:02:11,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 220 [2022-11-19 08:02:11,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:11,279 INFO L225 Difference]: With dead ends: 10470 [2022-11-19 08:02:11,280 INFO L226 Difference]: Without dead ends: 10468 [2022-11-19 08:02:11,284 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 08:02:11,285 INFO L413 NwaCegarLoop]: 1919 mSDtfsCounter, 1940 mSDsluCounter, 4272 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 6191 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:11,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 6191 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1095 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2022-11-19 08:02:11,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10468 states. [2022-11-19 08:02:12,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10468 to 10459. [2022-11-19 08:02:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10459 states, 6051 states have (on average 1.2138489505866799) internal successors, (7345), 6210 states have internal predecessors, (7345), 3326 states have call successors, (3326), 1080 states have call predecessors, (3326), 1079 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-19 08:02:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10459 states to 10459 states and 14066 transitions. [2022-11-19 08:02:12,336 INFO L78 Accepts]: Start accepts. Automaton has 10459 states and 14066 transitions. Word has length 220 [2022-11-19 08:02:12,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:12,337 INFO L495 AbstractCegarLoop]: Abstraction has 10459 states and 14066 transitions. [2022-11-19 08:02:12,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-19 08:02:12,337 INFO L276 IsEmpty]: Start isEmpty. Operand 10459 states and 14066 transitions. [2022-11-19 08:02:12,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-19 08:02:12,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:12,341 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 9, 8, 8, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:12,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 08:02:12,342 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:02:12,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:12,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1247072774, now seen corresponding path program 1 times [2022-11-19 08:02:12,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:12,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980639399] [2022-11-19 08:02:12,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:12,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 875 trivial. 0 not checked. [2022-11-19 08:02:14,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:14,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980639399] [2022-11-19 08:02:14,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980639399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:14,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:14,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:02:14,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906820603] [2022-11-19 08:02:14,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:14,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:02:14,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:14,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:02:14,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:02:14,597 INFO L87 Difference]: Start difference. First operand 10459 states and 14066 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-19 08:02:16,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:02:23,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:02:26,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:26,440 INFO L93 Difference]: Finished difference Result 10465 states and 14071 transitions. [2022-11-19 08:02:26,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:02:26,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 225 [2022-11-19 08:02:26,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:26,491 INFO L225 Difference]: With dead ends: 10465 [2022-11-19 08:02:26,491 INFO L226 Difference]: Without dead ends: 10463 [2022-11-19 08:02:26,501 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 08:02:26,502 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 2091 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:26,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 5432 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1006 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2022-11-19 08:02:26,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10463 states. [2022-11-19 08:02:27,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10463 to 10463. [2022-11-19 08:02:27,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10463 states, 6054 states have (on average 1.2137429798480344) internal successors, (7348), 6213 states have internal predecessors, (7348), 3326 states have call successors, (3326), 1081 states have call predecessors, (3326), 1080 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-19 08:02:27,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10463 states to 10463 states and 14069 transitions. [2022-11-19 08:02:27,534 INFO L78 Accepts]: Start accepts. Automaton has 10463 states and 14069 transitions. Word has length 225 [2022-11-19 08:02:27,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:27,534 INFO L495 AbstractCegarLoop]: Abstraction has 10463 states and 14069 transitions. [2022-11-19 08:02:27,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-19 08:02:27,535 INFO L276 IsEmpty]: Start isEmpty. Operand 10463 states and 14069 transitions. [2022-11-19 08:02:27,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-19 08:02:27,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:27,539 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 10, 9, 9, 6, 6, 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] [2022-11-19 08:02:27,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 08:02:27,540 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:02:27,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:27,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1076296301, now seen corresponding path program 1 times [2022-11-19 08:02:27,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:27,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123938682] [2022-11-19 08:02:27,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:27,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:29,839 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2022-11-19 08:02:29,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:29,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123938682] [2022-11-19 08:02:29,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123938682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:29,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:29,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:02:29,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639494565] [2022-11-19 08:02:29,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:29,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:02:29,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:29,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:02:29,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:02:29,842 INFO L87 Difference]: Start difference. First operand 10463 states and 14069 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-19 08:02:32,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:02:42,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:42,066 INFO L93 Difference]: Finished difference Result 10469 states and 14074 transitions. [2022-11-19 08:02:42,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:02:42,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 239 [2022-11-19 08:02:42,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:42,109 INFO L225 Difference]: With dead ends: 10469 [2022-11-19 08:02:42,109 INFO L226 Difference]: Without dead ends: 10467 [2022-11-19 08:02:42,116 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 08:02:42,116 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 2087 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:42,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2089 Valid, 5432 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1006 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2022-11-19 08:02:42,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10467 states. [2022-11-19 08:02:43,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10467 to 10467. [2022-11-19 08:02:43,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10467 states, 6057 states have (on average 1.2136371140828792) internal successors, (7351), 6216 states have internal predecessors, (7351), 3326 states have call successors, (3326), 1082 states have call predecessors, (3326), 1081 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-19 08:02:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10467 states to 10467 states and 14072 transitions. [2022-11-19 08:02:43,078 INFO L78 Accepts]: Start accepts. Automaton has 10467 states and 14072 transitions. Word has length 239 [2022-11-19 08:02:43,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:43,079 INFO L495 AbstractCegarLoop]: Abstraction has 10467 states and 14072 transitions. [2022-11-19 08:02:43,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-19 08:02:43,079 INFO L276 IsEmpty]: Start isEmpty. Operand 10467 states and 14072 transitions. [2022-11-19 08:02:43,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-19 08:02:43,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:43,085 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 11, 10, 10, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:43,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 08:02:43,086 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:02:43,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:43,086 INFO L85 PathProgramCache]: Analyzing trace with hash -949161798, now seen corresponding path program 1 times [2022-11-19 08:02:43,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:43,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425681034] [2022-11-19 08:02:43,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:43,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2022-11-19 08:02:45,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:45,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425681034] [2022-11-19 08:02:45,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425681034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:45,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:45,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:02:45,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104531360] [2022-11-19 08:02:45,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:45,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:02:45,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:45,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:02:45,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:02:45,196 INFO L87 Difference]: Start difference. First operand 10467 states and 14072 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:02:47,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:02:56,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:56,045 INFO L93 Difference]: Finished difference Result 10511 states and 14102 transitions. [2022-11-19 08:02:56,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:02:56,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 235 [2022-11-19 08:02:56,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:56,089 INFO L225 Difference]: With dead ends: 10511 [2022-11-19 08:02:56,089 INFO L226 Difference]: Without dead ends: 10507 [2022-11-19 08:02:56,095 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 08:02:56,096 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 2044 mSDsluCounter, 3666 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 5483 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:56,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2045 Valid, 5483 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1010 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-11-19 08:02:56,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10507 states. [2022-11-19 08:02:57,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10507 to 10505. [2022-11-19 08:02:57,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10505 states, 6081 states have (on average 1.2129583950008223) internal successors, (7376), 6239 states have internal predecessors, (7376), 3326 states have call successors, (3326), 1097 states have call predecessors, (3326), 1095 states have return successors, (3395), 3256 states have call predecessors, (3395), 3323 states have call successors, (3395) [2022-11-19 08:02:57,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10505 states to 10505 states and 14097 transitions. [2022-11-19 08:02:57,104 INFO L78 Accepts]: Start accepts. Automaton has 10505 states and 14097 transitions. Word has length 235 [2022-11-19 08:02:57,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:57,104 INFO L495 AbstractCegarLoop]: Abstraction has 10505 states and 14097 transitions. [2022-11-19 08:02:57,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:02:57,105 INFO L276 IsEmpty]: Start isEmpty. Operand 10505 states and 14097 transitions. [2022-11-19 08:02:57,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-19 08:02:57,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:57,112 INFO L195 NwaCegarLoop]: trace histogram [18, 13, 13, 13, 13, 13, 13, 5, 5, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:57,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 08:02:57,113 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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 08:02:57,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:57,114 INFO L85 PathProgramCache]: Analyzing trace with hash 120633521, now seen corresponding path program 1 times [2022-11-19 08:02:57,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:57,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493247219] [2022-11-19 08:02:57,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:57,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-11-19 08:02:58,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:58,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493247219] [2022-11-19 08:02:58,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493247219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:58,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:58,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:02:58,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025911454] [2022-11-19 08:02:58,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:58,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:02:58,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:58,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:02:58,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:58,795 INFO L87 Difference]: Start difference. First operand 10505 states and 14097 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-19 08:03:00,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:10,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:03:10,629 INFO L93 Difference]: Finished difference Result 25332 states and 34061 transitions. [2022-11-19 08:03:10,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:03:10,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 235 [2022-11-19 08:03:10,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:03:10,695 INFO L225 Difference]: With dead ends: 25332 [2022-11-19 08:03:10,695 INFO L226 Difference]: Without dead ends: 15005 [2022-11-19 08:03:10,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:03:10,743 INFO L413 NwaCegarLoop]: 3496 mSDtfsCounter, 2021 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2021 SdHoareTripleChecker+Valid, 5285 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:03:10,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2021 Valid, 5285 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 999 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-11-19 08:03:10,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15005 states. [2022-11-19 08:03:12,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15005 to 14935. [2022-11-19 08:03:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14935 states, 8666 states have (on average 1.2148626817447497) internal successors, (10528), 8892 states have internal predecessors, (10528), 4723 states have call successors, (4723), 1545 states have call predecessors, (4723), 1543 states have return successors, (4826), 4624 states have call predecessors, (4826), 4720 states have call successors, (4826) [2022-11-19 08:03:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14935 states to 14935 states and 20077 transitions. [2022-11-19 08:03:12,087 INFO L78 Accepts]: Start accepts. Automaton has 14935 states and 20077 transitions. Word has length 235 [2022-11-19 08:03:12,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:03:12,088 INFO L495 AbstractCegarLoop]: Abstraction has 14935 states and 20077 transitions. [2022-11-19 08:03:12,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-19 08:03:12,088 INFO L276 IsEmpty]: Start isEmpty. Operand 14935 states and 20077 transitions. [2022-11-19 08:03:12,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-19 08:03:12,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:03:12,092 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 12, 11, 11, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:03:12,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-19 08:03:12,093 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:03:12,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:03:12,094 INFO L85 PathProgramCache]: Analyzing trace with hash -426843795, now seen corresponding path program 1 times [2022-11-19 08:03:12,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:03:12,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072614771] [2022-11-19 08:03:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:12,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:03:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2022-11-19 08:03:14,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:03:14,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072614771] [2022-11-19 08:03:14,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072614771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:03:14,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:03:14,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:03:14,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019926197] [2022-11-19 08:03:14,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:03:14,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:03:14,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:03:14,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:03:14,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:03:14,634 INFO L87 Difference]: Start difference. First operand 14935 states and 20077 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-19 08:03:16,768 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 08:03:23,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:27,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:03:27,023 INFO L93 Difference]: Finished difference Result 15701 states and 20889 transitions. [2022-11-19 08:03:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:03:27,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 249 [2022-11-19 08:03:27,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:03:27,073 INFO L225 Difference]: With dead ends: 15701 [2022-11-19 08:03:27,073 INFO L226 Difference]: Without dead ends: 15578 [2022-11-19 08:03:27,082 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 08:03:27,083 INFO L413 NwaCegarLoop]: 1914 mSDtfsCounter, 2019 mSDsluCounter, 3978 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 5892 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:03:27,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 5892 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1096 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2022-11-19 08:03:27,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15578 states. [2022-11-19 08:03:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15578 to 15574. [2022-11-19 08:03:28,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15574 states, 9043 states have (on average 1.2098860997456595) internal successors, (10941), 9245 states have internal predecessors, (10941), 4823 states have call successors, (4823), 1706 states have call predecessors, (4823), 1706 states have return successors, (4929), 4749 states have call predecessors, (4929), 4823 states have call successors, (4929) [2022-11-19 08:03:28,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15574 states to 15574 states and 20693 transitions. [2022-11-19 08:03:28,489 INFO L78 Accepts]: Start accepts. Automaton has 15574 states and 20693 transitions. Word has length 249 [2022-11-19 08:03:28,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:03:28,489 INFO L495 AbstractCegarLoop]: Abstraction has 15574 states and 20693 transitions. [2022-11-19 08:03:28,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-19 08:03:28,490 INFO L276 IsEmpty]: Start isEmpty. Operand 15574 states and 20693 transitions. [2022-11-19 08:03:28,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-19 08:03:28,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:03:28,497 INFO L195 NwaCegarLoop]: trace histogram [20, 13, 13, 13, 13, 13, 13, 7, 7, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:28,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-19 08:03:28,498 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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 08:03:28,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:03:28,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1679987075, now seen corresponding path program 1 times [2022-11-19 08:03:28,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:03:28,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646379319] [2022-11-19 08:03:28,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:28,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:03:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:30,127 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 929 trivial. 0 not checked. [2022-11-19 08:03:30,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:03:30,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646379319] [2022-11-19 08:03:30,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646379319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:03:30,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:03:30,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:03:30,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163400866] [2022-11-19 08:03:30,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:03:30,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:03:30,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:03:30,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:03:30,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:03:30,129 INFO L87 Difference]: Start difference. First operand 15574 states and 20693 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-19 08:03:32,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:39,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:44,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:03:44,738 INFO L93 Difference]: Finished difference Result 35900 states and 47818 transitions. [2022-11-19 08:03:44,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:03:44,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 277 [2022-11-19 08:03:44,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:03:44,813 INFO L225 Difference]: With dead ends: 35900 [2022-11-19 08:03:44,813 INFO L226 Difference]: Without dead ends: 20504 [2022-11-19 08:03:44,854 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 08:03:44,854 INFO L413 NwaCegarLoop]: 3155 mSDtfsCounter, 1659 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 28 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 4877 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:03:44,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 4877 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 985 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2022-11-19 08:03:44,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20504 states. [2022-11-19 08:03:46,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20504 to 20496. [2022-11-19 08:03:46,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20496 states, 11952 states have (on average 1.2082496653279786) internal successors, (14441), 12221 states have internal predecessors, (14441), 6313 states have call successors, (6313), 2229 states have call predecessors, (6313), 2229 states have return successors, (6421), 6218 states have call predecessors, (6421), 6313 states have call successors, (6421) [2022-11-19 08:03:46,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20496 states to 20496 states and 27175 transitions. [2022-11-19 08:03:46,620 INFO L78 Accepts]: Start accepts. Automaton has 20496 states and 27175 transitions. Word has length 277 [2022-11-19 08:03:46,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:03:46,621 INFO L495 AbstractCegarLoop]: Abstraction has 20496 states and 27175 transitions. [2022-11-19 08:03:46,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-19 08:03:46,621 INFO L276 IsEmpty]: Start isEmpty. Operand 20496 states and 27175 transitions. [2022-11-19 08:03:46,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-11-19 08:03:46,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:03:46,731 INFO L195 NwaCegarLoop]: trace histogram [21, 13, 13, 13, 13, 13, 13, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:46,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-19 08:03:46,731 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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 08:03:46,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:03:46,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1840095135, now seen corresponding path program 1 times [2022-11-19 08:03:46,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:03:46,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698981868] [2022-11-19 08:03:46,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:46,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:03:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:51,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1033 trivial. 0 not checked. [2022-11-19 08:03:51,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:03:51,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698981868] [2022-11-19 08:03:51,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698981868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:03:51,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:03:51,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:03:51,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706837861] [2022-11-19 08:03:51,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:03:51,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:03:51,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:03:51,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:03:51,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:03:51,056 INFO L87 Difference]: Start difference. First operand 20496 states and 27175 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-19 08:03:53,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:00,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:04,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:04,092 INFO L93 Difference]: Finished difference Result 20548 states and 27225 transitions. [2022-11-19 08:04:04,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:04:04,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 321 [2022-11-19 08:04:04,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:04,159 INFO L225 Difference]: With dead ends: 20548 [2022-11-19 08:04:04,159 INFO L226 Difference]: Without dead ends: 20546 [2022-11-19 08:04:04,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 08:04:04,171 INFO L413 NwaCegarLoop]: 1798 mSDtfsCounter, 1986 mSDsluCounter, 3623 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 5421 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:04,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 5421 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1001 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2022-11-19 08:04:04,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20546 states. [2022-11-19 08:04:06,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20546 to 20544. [2022-11-19 08:04:06,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20544 states, 11988 states have (on average 1.206956956956957) internal successors, (14469), 12257 states have internal predecessors, (14469), 6313 states have call successors, (6313), 2241 states have call predecessors, (6313), 2241 states have return successors, (6421), 6218 states have call predecessors, (6421), 6313 states have call successors, (6421) [2022-11-19 08:04:06,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20544 states to 20544 states and 27203 transitions. [2022-11-19 08:04:06,154 INFO L78 Accepts]: Start accepts. Automaton has 20544 states and 27203 transitions. Word has length 321 [2022-11-19 08:04:06,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:06,155 INFO L495 AbstractCegarLoop]: Abstraction has 20544 states and 27203 transitions. [2022-11-19 08:04:06,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-19 08:04:06,155 INFO L276 IsEmpty]: Start isEmpty. Operand 20544 states and 27203 transitions. [2022-11-19 08:04:06,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-19 08:04:06,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:06,162 INFO L195 NwaCegarLoop]: trace histogram [22, 13, 13, 13, 13, 13, 13, 7, 7, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:04:06,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-19 08:04:06,162 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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 08:04:06,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:06,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1931753205, now seen corresponding path program 1 times [2022-11-19 08:04:06,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:06,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72435676] [2022-11-19 08:04:06,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:06,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2022-11-19 08:04:08,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:08,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72435676] [2022-11-19 08:04:08,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72435676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:08,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:08,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:04:08,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616358572] [2022-11-19 08:04:08,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:08,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:04:08,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:08,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:04:08,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:04:08,247 INFO L87 Difference]: Start difference. First operand 20544 states and 27203 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-19 08:04:10,382 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 08:04:21,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:22,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:25,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:27,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:34,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:34,791 INFO L93 Difference]: Finished difference Result 45672 states and 60498 transitions. [2022-11-19 08:04:34,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:04:34,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 326 [2022-11-19 08:04:34,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:34,868 INFO L225 Difference]: With dead ends: 45672 [2022-11-19 08:04:34,869 INFO L226 Difference]: Without dead ends: 25306 [2022-11-19 08:04:34,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:04:34,923 INFO L413 NwaCegarLoop]: 3146 mSDtfsCounter, 1621 mSDsluCounter, 8012 mSDsCounter, 0 mSdLazyCounter, 2125 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 11158 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2125 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:34,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 11158 Invalid, 2129 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2125 Invalid, 3 Unknown, 0 Unchecked, 24.0s Time] [2022-11-19 08:04:34,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25306 states. [2022-11-19 08:04:37,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25306 to 25286. [2022-11-19 08:04:37,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25286 states, 14720 states have (on average 1.2074048913043478) internal successors, (17773), 15056 states have internal predecessors, (17773), 7797 states have call successors, (7797), 2761 states have call predecessors, (7797), 2767 states have return successors, (7913), 7687 states have call predecessors, (7913), 7797 states have call successors, (7913) [2022-11-19 08:04:37,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25286 states to 25286 states and 33483 transitions. [2022-11-19 08:04:37,453 INFO L78 Accepts]: Start accepts. Automaton has 25286 states and 33483 transitions. Word has length 326 [2022-11-19 08:04:37,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:37,454 INFO L495 AbstractCegarLoop]: Abstraction has 25286 states and 33483 transitions. [2022-11-19 08:04:37,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-19 08:04:37,454 INFO L276 IsEmpty]: Start isEmpty. Operand 25286 states and 33483 transitions. [2022-11-19 08:04:37,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-19 08:04:37,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:37,465 INFO L195 NwaCegarLoop]: trace histogram [22, 13, 13, 13, 13, 13, 13, 7, 7, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:04:37,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-19 08:04:37,465 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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 08:04:37,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:37,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1291349982, now seen corresponding path program 1 times [2022-11-19 08:04:37,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:37,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128632375] [2022-11-19 08:04:37,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:37,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2022-11-19 08:04:39,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:39,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128632375] [2022-11-19 08:04:39,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128632375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:39,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:39,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:04:39,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749654493] [2022-11-19 08:04:39,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:39,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:04:39,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:39,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:04:39,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:04:39,505 INFO L87 Difference]: Start difference. First operand 25286 states and 33483 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-19 08:04:41,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:52,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:04:53,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:05:02,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:05:02,554 INFO L93 Difference]: Finished difference Result 58831 states and 77933 transitions. [2022-11-19 08:05:02,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:05:02,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 327 [2022-11-19 08:05:02,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:05:02,655 INFO L225 Difference]: With dead ends: 58831 [2022-11-19 08:05:02,655 INFO L226 Difference]: Without dead ends: 33723 [2022-11-19 08:05:02,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:05:02,706 INFO L413 NwaCegarLoop]: 3037 mSDtfsCounter, 1749 mSDsluCounter, 7786 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 22 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1749 SdHoareTripleChecker+Valid, 10823 SdHoareTripleChecker+Invalid, 2105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:05:02,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1749 Valid, 10823 Invalid, 2105 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 2081 Invalid, 2 Unknown, 0 Unchecked, 20.0s Time] [2022-11-19 08:05:02,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33723 states. [2022-11-19 08:05:06,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33723 to 33703. [2022-11-19 08:05:06,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33703 states, 19480 states have (on average 1.2010266940451746) internal successors, (23396), 19930 states have internal predecessors, (23396), 10493 states have call successors, (10493), 3716 states have call predecessors, (10493), 3728 states have return successors, (10623), 10344 states have call predecessors, (10623), 10493 states have call successors, (10623) [2022-11-19 08:05:06,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33703 states to 33703 states and 44512 transitions. [2022-11-19 08:05:06,328 INFO L78 Accepts]: Start accepts. Automaton has 33703 states and 44512 transitions. Word has length 327 [2022-11-19 08:05:06,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:05:06,329 INFO L495 AbstractCegarLoop]: Abstraction has 33703 states and 44512 transitions. [2022-11-19 08:05:06,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-19 08:05:06,329 INFO L276 IsEmpty]: Start isEmpty. Operand 33703 states and 44512 transitions. [2022-11-19 08:05:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-11-19 08:05:06,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:06,338 INFO L195 NwaCegarLoop]: trace histogram [22, 13, 13, 13, 13, 13, 13, 7, 7, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:05:06,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-19 08:05:06,338 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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 08:05:06,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:06,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1444566276, now seen corresponding path program 1 times [2022-11-19 08:05:06,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:06,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96426882] [2022-11-19 08:05:06,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:06,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2022-11-19 08:05:08,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:08,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96426882] [2022-11-19 08:05:08,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96426882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:05:08,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:05:08,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:05:08,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389168321] [2022-11-19 08:05:08,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:05:08,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:05:08,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:05:08,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:05:08,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:05:08,089 INFO L87 Difference]: Start difference. First operand 33703 states and 44512 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-19 08:05:10,219 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 08:05:21,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:05:23,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:05:25,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:05:26,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:05:35,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:05:35,416 INFO L93 Difference]: Finished difference Result 75683 states and 100027 transitions. [2022-11-19 08:05:35,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:05:35,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 328 [2022-11-19 08:05:35,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:05:35,563 INFO L225 Difference]: With dead ends: 75683 [2022-11-19 08:05:35,564 INFO L226 Difference]: Without dead ends: 42158 [2022-11-19 08:05:35,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:05:35,757 INFO L413 NwaCegarLoop]: 3248 mSDtfsCounter, 1743 mSDsluCounter, 8214 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 25 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 11462 SdHoareTripleChecker+Invalid, 2246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:05:35,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1743 Valid, 11462 Invalid, 2246 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 2219 Invalid, 2 Unknown, 0 Unchecked, 23.2s Time] [2022-11-19 08:05:35,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42158 states. [2022-11-19 08:05:39,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42158 to 42138. [2022-11-19 08:05:39,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42138 states, 24258 states have (on average 1.1970071728914173) internal successors, (29037), 24822 states have internal predecessors, (29037), 13189 states have call successors, (13189), 4671 states have call predecessors, (13189), 4689 states have return successors, (13333), 13001 states have call predecessors, (13333), 13189 states have call successors, (13333) [2022-11-19 08:05:39,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42138 states to 42138 states and 55559 transitions. [2022-11-19 08:05:39,803 INFO L78 Accepts]: Start accepts. Automaton has 42138 states and 55559 transitions. Word has length 328 [2022-11-19 08:05:39,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:05:39,803 INFO L495 AbstractCegarLoop]: Abstraction has 42138 states and 55559 transitions. [2022-11-19 08:05:39,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-19 08:05:39,804 INFO L276 IsEmpty]: Start isEmpty. Operand 42138 states and 55559 transitions. [2022-11-19 08:05:39,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-19 08:05:39,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:39,812 INFO L195 NwaCegarLoop]: trace histogram [22, 13, 13, 13, 13, 13, 13, 7, 7, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:05:39,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-19 08:05:39,812 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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 08:05:39,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:39,813 INFO L85 PathProgramCache]: Analyzing trace with hash 686906555, now seen corresponding path program 1 times [2022-11-19 08:05:39,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:39,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401418513] [2022-11-19 08:05:39,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:39,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:42,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2022-11-19 08:05:42,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:42,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401418513] [2022-11-19 08:05:42,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401418513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:05:42,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:05:42,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:05:42,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614979944] [2022-11-19 08:05:42,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:05:42,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:05:42,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:05:42,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:05:42,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:05:42,500 INFO L87 Difference]: Start difference. First operand 42138 states and 55559 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-19 08:05:44,621 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 []