./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash df4f0c8d40dc980084ec2f9936d9bc7fc71c78b40a0de276eef2539e9d717dce --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:16:55,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:16:55,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:16:55,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:16:55,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:16:55,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:16:55,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:16:55,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:16:55,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:16:55,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:16:55,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:16:55,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:16:55,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:16:55,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:16:55,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:16:55,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:16:55,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:16:55,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:16:55,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:16:55,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:16:55,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:16:55,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:16:55,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:16:55,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:16:55,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:16:55,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:16:55,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:16:55,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:16:55,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:16:55,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:16:55,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:16:55,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:16:55,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:16:55,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:16:55,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:16:55,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:16:55,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:16:55,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:16:55,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:16:55,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:16:55,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:16:55,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:16:55,346 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:16:55,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:16:55,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:16:55,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:16:55,348 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:16:55,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:16:55,351 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:16:55,351 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:16:55,351 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:16:55,352 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:16:55,352 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:16:55,352 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:16:55,352 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:16:55,353 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:16:55,353 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:16:55,354 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:16:55,355 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:16:55,355 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:16:55,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:16:55,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:16:55,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:16:55,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:16:55,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:16:55,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:16:55,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:16:55,359 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:16:55,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:16:55,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:16:55,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:16:55,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:16:55,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:16:55,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:16:55,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:16:55,363 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:16:55,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:16:55,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:16:55,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:16:55,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:16:55,364 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df4f0c8d40dc980084ec2f9936d9bc7fc71c78b40a0de276eef2539e9d717dce [2021-11-25 19:16:55,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:16:55,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:16:55,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:16:55,681 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:16:55,682 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:16:55,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i [2021-11-25 19:16:55,765 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/bin/utaipan-eEHZpOm5b7/data/a50983c8c/50b78e7f3f2143eebd93245aebc34c90/FLAG379aa97c8 [2021-11-25 19:16:56,782 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:16:56,782 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i [2021-11-25 19:16:56,846 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/bin/utaipan-eEHZpOm5b7/data/a50983c8c/50b78e7f3f2143eebd93245aebc34c90/FLAG379aa97c8 [2021-11-25 19:16:57,177 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/bin/utaipan-eEHZpOm5b7/data/a50983c8c/50b78e7f3f2143eebd93245aebc34c90 [2021-11-25 19:16:57,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:16:57,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:16:57,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:16:57,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:16:57,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:16:57,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:16:57" (1/1) ... [2021-11-25 19:16:57,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39037a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:57, skipping insertion in model container [2021-11-25 19:16:57,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:16:57" (1/1) ... [2021-11-25 19:16:57,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:16:57,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:17:01,564 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i[415958,415971] [2021-11-25 19:17:01,568 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i[416127,416140] [2021-11-25 19:17:01,569 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i[416294,416307] [2021-11-25 19:17:01,577 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i[416462,416475] [2021-11-25 19:17:01,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:17:01,693 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:17:02,390 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i[415958,415971] [2021-11-25 19:17:02,390 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i[416127,416140] [2021-11-25 19:17:02,391 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i[416294,416307] [2021-11-25 19:17:02,392 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i[416462,416475] [2021-11-25 19:17:02,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:17:02,661 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:17:02,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:17:02 WrapperNode [2021-11-25 19:17:02,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:17:02,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:17:02,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:17:02,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:17:02,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:17:02" (1/1) ... [2021-11-25 19:17:02,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:17:02" (1/1) ... [2021-11-25 19:17:03,160 INFO L137 Inliner]: procedures = 484, calls = 3172, calls flagged for inlining = 226, calls inlined = 201, statements flattened = 6855 [2021-11-25 19:17:03,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:17:03,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:17:03,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:17:03,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:17:03,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:17:02" (1/1) ... [2021-11-25 19:17:03,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:17:02" (1/1) ... [2021-11-25 19:17:03,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:17:02" (1/1) ... [2021-11-25 19:17:03,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:17:02" (1/1) ... [2021-11-25 19:17:03,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:17:02" (1/1) ... [2021-11-25 19:17:03,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:17:02" (1/1) ... [2021-11-25 19:17:03,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:17:02" (1/1) ... [2021-11-25 19:17:03,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:17:03,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:17:03,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:17:03,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:17:03,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:17:02" (1/1) ... [2021-11-25 19:17:03,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:17:03,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:17:03,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:17:03,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25f6aac0-b4a2-463d-80de-18f5305e952b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:17:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure ngene_command_mutex [2021-11-25 19:17:03,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ngene_command_mutex [2021-11-25 19:17:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure ngene_probe [2021-11-25 19:17:03,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ngene_probe [2021-11-25 19:17:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 19:17:03,822 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 19:17:03,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:17:03,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:17:03,822 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 19:17:03,822 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 19:17:03,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:17:03,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:17:03,823 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2021-11-25 19:17:03,823 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2021-11-25 19:17:03,824 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-11-25 19:17:03,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-11-25 19:17:03,824 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_release [2021-11-25 19:17:03,824 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_release [2021-11-25 19:17:03,824 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_open [2021-11-25 19:17:03,825 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_open [2021-11-25 19:17:03,825 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 19:17:03,825 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 19:17:03,825 INFO L130 BoogieDeclarations]: Found specification of procedure ngene_release_buffers [2021-11-25 19:17:03,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ngene_release_buffers [2021-11-25 19:17:03,826 INFO L130 BoogieDeclarations]: Found specification of procedure down [2021-11-25 19:17:03,826 INFO L138 BoogieDeclarations]: Found implementation of procedure down [2021-11-25 19:17:03,826 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 19:17:03,826 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 19:17:03,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 19:17:03,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 19:17:03,827 INFO L130 BoogieDeclarations]: Found specification of procedure tuner_attach_stv6110 [2021-11-25 19:17:03,827 INFO L138 BoogieDeclarations]: Found implementation of procedure tuner_attach_stv6110 [2021-11-25 19:17:03,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 19:17:03,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 19:17:03,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:17:03,828 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-25 19:17:03,828 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-25 19:17:03,829 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 19:17:03,829 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 19:17:03,829 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-25 19:17:03,829 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-25 19:17:03,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:17:03,830 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 19:17:03,830 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 19:17:03,830 INFO L130 BoogieDeclarations]: Found specification of procedure ngene_command_i2c_read [2021-11-25 19:17:03,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ngene_command_i2c_read [2021-11-25 19:17:03,831 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 19:17:03,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 19:17:03,831 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-25 19:17:03,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-25 19:17:03,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:17:03,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 19:17:03,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 19:17:03,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:17:03,832 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_ringbuffer_avail [2021-11-25 19:17:03,833 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_ringbuffer_avail [2021-11-25 19:17:03,833 INFO L130 BoogieDeclarations]: Found specification of procedure set_transfer [2021-11-25 19:17:03,833 INFO L138 BoogieDeclarations]: Found implementation of procedure set_transfer [2021-11-25 19:17:03,833 INFO L130 BoogieDeclarations]: Found specification of procedure ngene_resume [2021-11-25 19:17:03,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ngene_resume [2021-11-25 19:17:03,834 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_detach [2021-11-25 19:17:03,834 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_detach [2021-11-25 19:17:03,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:17:03,834 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:17:03,835 INFO L130 BoogieDeclarations]: Found specification of procedure ngene_shutdown [2021-11-25 19:17:03,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ngene_shutdown [2021-11-25 19:17:03,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 19:17:03,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 19:17:03,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_cmd_lock_of_ngene [2021-11-25 19:17:03,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_cmd_lock_of_ngene [2021-11-25 19:17:03,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 19:17:03,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 19:17:03,836 INFO L130 BoogieDeclarations]: Found specification of procedure memset_io [2021-11-25 19:17:03,837 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_io [2021-11-25 19:17:03,837 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_frontend [2021-11-25 19:17:03,837 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_frontend [2021-11-25 19:17:03,837 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2021-11-25 19:17:03,837 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2021-11-25 19:17:03,838 INFO L130 BoogieDeclarations]: Found specification of procedure ngene_command [2021-11-25 19:17:03,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ngene_command [2021-11-25 19:17:03,838 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-25 19:17:03,838 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-25 19:17:03,838 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 19:17:03,839 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 19:17:03,839 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 19:17:03,839 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 19:17:03,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 19:17:03,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 19:17:03,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:17:03,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 19:17:03,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 19:17:03,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 19:17:03,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 19:17:03,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-25 19:17:03,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-25 19:17:03,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 19:17:03,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 19:17:03,842 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_ringbuffer_write [2021-11-25 19:17:03,842 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_ringbuffer_write [2021-11-25 19:17:03,842 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_register_frontend [2021-11-25 19:17:03,842 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_register_frontend [2021-11-25 19:17:03,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:17:03,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 19:17:03,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 19:17:03,843 INFO L130 BoogieDeclarations]: Found specification of procedure ngene_remove [2021-11-25 19:17:03,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ngene_remove [2021-11-25 19:17:03,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_state_lock_of_ngene_channel [2021-11-25 19:17:03,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_state_lock_of_ngene_channel [2021-11-25 19:17:03,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:17:03,845 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-25 19:17:03,845 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-25 19:17:03,845 INFO L130 BoogieDeclarations]: Found specification of procedure ngene_stop [2021-11-25 19:17:03,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ngene_stop [2021-11-25 19:17:03,845 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:17:03,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:17:03,846 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-25 19:17:03,846 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-25 19:17:03,846 INFO L130 BoogieDeclarations]: Found specification of procedure ngene_i2c_init [2021-11-25 19:17:03,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ngene_i2c_init [2021-11-25 19:17:03,847 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2021-11-25 19:17:03,847 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2021-11-25 19:17:03,847 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-25 19:17:03,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-25 19:17:03,848 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_del_adapter [2021-11-25 19:17:03,848 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_del_adapter [2021-11-25 19:17:03,848 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_ringbuffer_free [2021-11-25 19:17:03,848 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_ringbuffer_free [2021-11-25 19:17:03,849 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 19:17:03,849 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 19:17:03,849 INFO L130 BoogieDeclarations]: Found specification of procedure init_channels [2021-11-25 19:17:03,849 INFO L138 BoogieDeclarations]: Found implementation of procedure init_channels [2021-11-25 19:17:03,849 INFO L130 BoogieDeclarations]: Found specification of procedure free_ringbuffer [2021-11-25 19:17:03,850 INFO L138 BoogieDeclarations]: Found implementation of procedure free_ringbuffer [2021-11-25 19:17:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-25 19:17:03,850 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-25 19:17:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:17:03,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:17:03,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dvb_register_frontend [2021-11-25 19:17:03,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dvb_register_frontend [2021-11-25 19:17:03,851 INFO L130 BoogieDeclarations]: Found specification of procedure AllocateRingBuffers [2021-11-25 19:17:03,851 INFO L138 BoogieDeclarations]: Found implementation of procedure AllocateRingBuffers [2021-11-25 19:17:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 19:17:03,852 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 19:17:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:17:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:17:03,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:17:03,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:17:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_ringbuffer_init [2021-11-25 19:17:03,853 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_ringbuffer_init [2021-11-25 19:17:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2021-11-25 19:17:03,853 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2021-11-25 19:17:03,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:17:03,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:17:03,854 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-25 19:17:03,854 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-25 19:17:03,854 INFO L130 BoogieDeclarations]: Found specification of procedure demod_attach_stv0900 [2021-11-25 19:17:03,855 INFO L138 BoogieDeclarations]: Found implementation of procedure demod_attach_stv0900 [2021-11-25 19:17:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure FillTSBuffer [2021-11-25 19:17:03,855 INFO L138 BoogieDeclarations]: Found implementation of procedure FillTSBuffer [2021-11-25 19:17:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_cmd_lock_of_ngene [2021-11-25 19:17:03,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_cmd_lock_of_ngene [2021-11-25 19:17:03,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_module_exit_ngene_12_2 [2021-11-25 19:17:03,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_module_exit_ngene_12_2 [2021-11-25 19:17:03,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:17:03,856 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:17:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure create_ring_buffer [2021-11-25 19:17:03,857 INFO L138 BoogieDeclarations]: Found implementation of procedure create_ring_buffer [2021-11-25 19:17:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 19:17:03,857 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 19:17:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-25 19:17:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-25 19:17:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-25 19:17:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-25 19:17:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure ngene_command_gpio_set [2021-11-25 19:17:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ngene_command_gpio_set [2021-11-25 19:17:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:17:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_read_eeprom [2021-11-25 19:17:03,859 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_read_eeprom [2021-11-25 19:17:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 19:17:03,860 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 19:17:03,860 INFO L130 BoogieDeclarations]: Found specification of procedure up [2021-11-25 19:17:03,860 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2021-11-25 19:17:03,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:17:03,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:17:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure my_dvb_dmxdev_ts_card_init [2021-11-25 19:17:03,861 INFO L138 BoogieDeclarations]: Found implementation of procedure my_dvb_dmxdev_ts_card_init [2021-11-25 19:17:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 19:17:03,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 19:17:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-25 19:17:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-25 19:17:03,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 19:17:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 19:17:03,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 19:17:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 19:17:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_state_lock_of_ngene_channel [2021-11-25 19:17:03,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_state_lock_of_ngene_channel [2021-11-25 19:17:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_66 [2021-11-25 19:17:03,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_66 [2021-11-25 19:17:03,864 INFO L130 BoogieDeclarations]: Found specification of procedure init_channel [2021-11-25 19:17:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure init_channel [2021-11-25 19:17:03,864 INFO L130 BoogieDeclarations]: Found specification of procedure release_channel [2021-11-25 19:17:03,864 INFO L138 BoogieDeclarations]: Found implementation of procedure release_channel [2021-11-25 19:17:03,864 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-11-25 19:17:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-11-25 19:17:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_ringbuffer_flush [2021-11-25 19:17:03,865 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_ringbuffer_flush [2021-11-25 19:17:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:17:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2021-11-25 19:17:03,866 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2021-11-25 19:17:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-25 19:17:03,866 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-25 19:17:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:17:03,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:17:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2021-11-25 19:17:03,867 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2021-11-25 19:17:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_67 [2021-11-25 19:17:03,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_67 [2021-11-25 19:17:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2021-11-25 19:17:03,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2021-11-25 19:17:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 19:17:03,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 19:17:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure drxk_gate_ctrl [2021-11-25 19:17:03,869 INFO L138 BoogieDeclarations]: Found implementation of procedure drxk_gate_ctrl [2021-11-25 19:17:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 19:17:03,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 19:17:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 19:17:03,869 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 19:17:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 19:17:03,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 19:17:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-25 19:17:03,870 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-25 19:17:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 19:17:03,871 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 19:17:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:17:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dvb_unregister_frontend [2021-11-25 19:17:03,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dvb_unregister_frontend [2021-11-25 19:17:03,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 19:17:03,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 19:17:04,992 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:17:05,003 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:17:08,176 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:17:17,017 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 19:17:17,096 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:17:18,872 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:17:18,873 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:17:18,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:17:18 BoogieIcfgContainer [2021-11-25 19:17:18,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:17:18,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:17:18,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:17:18,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:17:18,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:16:57" (1/3) ... [2021-11-25 19:17:18,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ccfde09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:17:18, skipping insertion in model container [2021-11-25 19:17:18,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:17:02" (2/3) ... [2021-11-25 19:17:18,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ccfde09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:17:18, skipping insertion in model container [2021-11-25 19:17:18,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:17:18" (3/3) ... [2021-11-25 19:17:18,893 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i [2021-11-25 19:17:18,899 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:17:18,900 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 19:17:18,967 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:17:18,975 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:17:18,975 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 19:17:19,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 1577 states, 971 states have (on average 1.3429454170957775) internal successors, (1304), 993 states have internal predecessors, (1304), 493 states have call successors, (493), 111 states have call predecessors, (493), 110 states have return successors, (485), 485 states have call predecessors, (485), 485 states have call successors, (485) [2021-11-25 19:17:19,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-25 19:17:19,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:17:19,062 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:17:19,063 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:17:19,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:17:19,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1364954074, now seen corresponding path program 1 times [2021-11-25 19:17:19,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:17:19,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228863915] [2021-11-25 19:17:19,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:17:19,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:17:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:17:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-25 19:17:20,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:17:20,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228863915] [2021-11-25 19:17:20,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228863915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:17:20,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:17:20,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:17:20,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960162135] [2021-11-25 19:17:20,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:17:20,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:17:20,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:17:20,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:17:20,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:17:20,188 INFO L87 Difference]: Start difference. First operand has 1577 states, 971 states have (on average 1.3429454170957775) internal successors, (1304), 993 states have internal predecessors, (1304), 493 states have call successors, (493), 111 states have call predecessors, (493), 110 states have return successors, (485), 485 states have call predecessors, (485), 485 states have call successors, (485) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 19:17:23,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:26,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:28,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:32,766 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:34,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:34,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:17:34,892 INFO L93 Difference]: Finished difference Result 4509 states and 6729 transitions. [2021-11-25 19:17:34,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:17:34,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2021-11-25 19:17:34,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:17:34,953 INFO L225 Difference]: With dead ends: 4509 [2021-11-25 19:17:34,953 INFO L226 Difference]: Without dead ends: 2930 [2021-11-25 19:17:34,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:17:34,979 INFO L933 BasicCegarLoop]: 2440 mSDtfsCounter, 2067 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2076 SdHoareTripleChecker+Valid, 4397 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:17:34,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2076 Valid, 4397 Invalid, 580 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 571 Invalid, 3 Unknown, 0 Unchecked, 14.3s Time] [2021-11-25 19:17:35,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2021-11-25 19:17:35,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2900. [2021-11-25 19:17:35,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2900 states, 1808 states have (on average 1.3412610619469028) internal successors, (2425), 1857 states have internal predecessors, (2425), 885 states have call successors, (885), 208 states have call predecessors, (885), 204 states have return successors, (914), 871 states have call predecessors, (914), 881 states have call successors, (914) [2021-11-25 19:17:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2900 states to 2900 states and 4224 transitions. [2021-11-25 19:17:35,468 INFO L78 Accepts]: Start accepts. Automaton has 2900 states and 4224 transitions. Word has length 141 [2021-11-25 19:17:35,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:17:35,477 INFO L470 AbstractCegarLoop]: Abstraction has 2900 states and 4224 transitions. [2021-11-25 19:17:35,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 19:17:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2900 states and 4224 transitions. [2021-11-25 19:17:35,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-25 19:17:35,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:17:35,500 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 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] [2021-11-25 19:17:35,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:17:35,501 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:17:35,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:17:35,506 INFO L85 PathProgramCache]: Analyzing trace with hash -2027454988, now seen corresponding path program 1 times [2021-11-25 19:17:35,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:17:35,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925031824] [2021-11-25 19:17:35,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:17:35,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:17:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:17:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-25 19:17:36,010 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:17:36,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925031824] [2021-11-25 19:17:36,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925031824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:17:36,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:17:36,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:17:36,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435090800] [2021-11-25 19:17:36,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:17:36,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:17:36,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:17:36,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:17:36,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:17:36,016 INFO L87 Difference]: Start difference. First operand 2900 states and 4224 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 19:17:39,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:44,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:46,604 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:48,872 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:50,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:51,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:17:51,304 INFO L93 Difference]: Finished difference Result 8494 states and 12366 transitions. [2021-11-25 19:17:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:17:51,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 145 [2021-11-25 19:17:51,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:17:51,360 INFO L225 Difference]: With dead ends: 8494 [2021-11-25 19:17:51,360 INFO L226 Difference]: Without dead ends: 5619 [2021-11-25 19:17:51,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:17:51,388 INFO L933 BasicCegarLoop]: 2358 mSDtfsCounter, 2011 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2020 SdHoareTripleChecker+Valid, 4254 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:17:51,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2020 Valid, 4254 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 595 Invalid, 3 Unknown, 0 Unchecked, 14.9s Time] [2021-11-25 19:17:51,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5619 states. [2021-11-25 19:17:51,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5619 to 5614. [2021-11-25 19:17:51,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5614 states, 3527 states have (on average 1.3396654380493338) internal successors, (4725), 3617 states have internal predecessors, (4725), 1681 states have call successors, (1681), 410 states have call predecessors, (1681), 403 states have return successors, (1748), 1660 states have call predecessors, (1748), 1677 states have call successors, (1748) [2021-11-25 19:17:51,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5614 states to 5614 states and 8154 transitions. [2021-11-25 19:17:51,902 INFO L78 Accepts]: Start accepts. Automaton has 5614 states and 8154 transitions. Word has length 145 [2021-11-25 19:17:51,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:17:51,907 INFO L470 AbstractCegarLoop]: Abstraction has 5614 states and 8154 transitions. [2021-11-25 19:17:51,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 19:17:51,908 INFO L276 IsEmpty]: Start isEmpty. Operand 5614 states and 8154 transitions. [2021-11-25 19:17:51,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-25 19:17:51,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:17:51,916 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:17:51,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:17:51,917 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:17:51,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:17:51,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1363322872, now seen corresponding path program 1 times [2021-11-25 19:17:51,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:17:51,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931577999] [2021-11-25 19:17:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:17:51,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:17:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:17:52,370 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-25 19:17:52,370 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:17:52,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931577999] [2021-11-25 19:17:52,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931577999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:17:52,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:17:52,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:17:52,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658398135] [2021-11-25 19:17:52,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:17:52,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:17:52,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:17:52,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:17:52,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:17:52,374 INFO L87 Difference]: Start difference. First operand 5614 states and 8154 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-25 19:17:57,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:00,887 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:02,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:04,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:06,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:06,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:18:06,708 INFO L93 Difference]: Finished difference Result 10129 states and 14686 transitions. [2021-11-25 19:18:06,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:18:06,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 160 [2021-11-25 19:18:06,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:18:06,751 INFO L225 Difference]: With dead ends: 10129 [2021-11-25 19:18:06,752 INFO L226 Difference]: Without dead ends: 4540 [2021-11-25 19:18:06,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:18:06,789 INFO L933 BasicCegarLoop]: 2168 mSDtfsCounter, 855 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 18 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 4064 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:18:06,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [855 Valid, 4064 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 630 Invalid, 4 Unknown, 0 Unchecked, 14.1s Time] [2021-11-25 19:18:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4540 states. [2021-11-25 19:18:06,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4540 to 4511. [2021-11-25 19:18:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4511 states, 2833 states have (on average 1.334627603247441) internal successors, (3781), 2896 states have internal predecessors, (3781), 1336 states have call successors, (1336), 345 states have call predecessors, (1336), 339 states have return successors, (1365), 1312 states have call predecessors, (1365), 1332 states have call successors, (1365) [2021-11-25 19:18:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4511 states to 4511 states and 6482 transitions. [2021-11-25 19:18:07,158 INFO L78 Accepts]: Start accepts. Automaton has 4511 states and 6482 transitions. Word has length 160 [2021-11-25 19:18:07,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:18:07,159 INFO L470 AbstractCegarLoop]: Abstraction has 4511 states and 6482 transitions. [2021-11-25 19:18:07,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-25 19:18:07,159 INFO L276 IsEmpty]: Start isEmpty. Operand 4511 states and 6482 transitions. [2021-11-25 19:18:07,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-25 19:18:07,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:18:07,164 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 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] [2021-11-25 19:18:07,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:18:07,165 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:18:07,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:18:07,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1535129765, now seen corresponding path program 1 times [2021-11-25 19:18:07,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:18:07,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970240] [2021-11-25 19:18:07,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:18:07,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:18:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:18:07,495 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2021-11-25 19:18:07,495 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:18:07,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970240] [2021-11-25 19:18:07,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:18:07,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:18:07,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:18:07,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814008500] [2021-11-25 19:18:07,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:18:07,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:18:07,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:18:07,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:18:07,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:18:07,508 INFO L87 Difference]: Start difference. First operand 4511 states and 6482 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 19:18:10,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:14,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:17,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:19,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:21,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:23,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:23,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:18:23,266 INFO L93 Difference]: Finished difference Result 12345 states and 17791 transitions. [2021-11-25 19:18:23,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:18:23,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 173 [2021-11-25 19:18:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:18:23,338 INFO L225 Difference]: With dead ends: 12345 [2021-11-25 19:18:23,339 INFO L226 Difference]: Without dead ends: 7859 [2021-11-25 19:18:23,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:18:23,366 INFO L933 BasicCegarLoop]: 2424 mSDtfsCounter, 2050 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2056 SdHoareTripleChecker+Valid, 4349 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:18:23,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2056 Valid, 4349 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 591 Invalid, 3 Unknown, 0 Unchecked, 15.5s Time] [2021-11-25 19:18:23,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7859 states. [2021-11-25 19:18:23,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7859 to 7823. [2021-11-25 19:18:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7823 states, 4919 states have (on average 1.33746696483025) internal successors, (6579), 5049 states have internal predecessors, (6579), 2313 states have call successors, (2313), 599 states have call predecessors, (2313), 588 states have return successors, (2383), 2258 states have call predecessors, (2383), 2309 states have call successors, (2383) [2021-11-25 19:18:23,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7823 states to 7823 states and 11275 transitions. [2021-11-25 19:18:23,938 INFO L78 Accepts]: Start accepts. Automaton has 7823 states and 11275 transitions. Word has length 173 [2021-11-25 19:18:23,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:18:23,940 INFO L470 AbstractCegarLoop]: Abstraction has 7823 states and 11275 transitions. [2021-11-25 19:18:23,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 19:18:23,940 INFO L276 IsEmpty]: Start isEmpty. Operand 7823 states and 11275 transitions. [2021-11-25 19:18:23,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-25 19:18:23,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:18:23,948 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:18:23,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:18:23,949 INFO L402 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)] === [2021-11-25 19:18:23,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:18:23,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1880285376, now seen corresponding path program 1 times [2021-11-25 19:18:23,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:18:23,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176382996] [2021-11-25 19:18:23,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:18:23,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:18:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:18:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2021-11-25 19:18:24,488 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:18:24,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176382996] [2021-11-25 19:18:24,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176382996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:18:24,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:18:24,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:18:24,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143135790] [2021-11-25 19:18:24,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:18:24,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:18:24,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:18:24,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:18:24,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:18:24,491 INFO L87 Difference]: Start difference. First operand 7823 states and 11275 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (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) [2021-11-25 19:18:27,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:30,857 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:34,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:36,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:39,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:41,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:18:41,812 INFO L93 Difference]: Finished difference Result 9740 states and 13967 transitions. [2021-11-25 19:18:41,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:18:41,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (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 [2021-11-25 19:18:41,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:18:41,881 INFO L225 Difference]: With dead ends: 9740 [2021-11-25 19:18:41,882 INFO L226 Difference]: Without dead ends: 9738 [2021-11-25 19:18:41,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:18:41,888 INFO L933 BasicCegarLoop]: 2204 mSDtfsCounter, 2074 mSDsluCounter, 6277 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2098 SdHoareTripleChecker+Valid, 7755 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:18:41,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2098 Valid, 7755 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1031 Invalid, 3 Unknown, 0 Unchecked, 16.9s Time] [2021-11-25 19:18:41,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9738 states. [2021-11-25 19:18:42,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9738 to 9733. [2021-11-25 19:18:42,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9733 states, 6089 states have (on average 1.3304319264247002) internal successors, (8101), 6255 states have internal predecessors, (8101), 2872 states have call successors, (2872), 781 states have call predecessors, (2872), 769 states have return successors, (2989), 2812 states have call predecessors, (2989), 2868 states have call successors, (2989) [2021-11-25 19:18:42,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9733 states to 9733 states and 13962 transitions. [2021-11-25 19:18:42,387 INFO L78 Accepts]: Start accepts. Automaton has 9733 states and 13962 transitions. Word has length 190 [2021-11-25 19:18:42,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:18:42,388 INFO L470 AbstractCegarLoop]: Abstraction has 9733 states and 13962 transitions. [2021-11-25 19:18:42,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (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) [2021-11-25 19:18:42,388 INFO L276 IsEmpty]: Start isEmpty. Operand 9733 states and 13962 transitions. [2021-11-25 19:18:42,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-25 19:18:42,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:18:42,394 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 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] [2021-11-25 19:18:42,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:18:42,395 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:18:42,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:18:42,396 INFO L85 PathProgramCache]: Analyzing trace with hash 625853575, now seen corresponding path program 1 times [2021-11-25 19:18:42,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:18:42,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605370730] [2021-11-25 19:18:42,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:18:42,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:18:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:18:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2021-11-25 19:18:42,830 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:18:42,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605370730] [2021-11-25 19:18:42,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605370730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:18:42,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:18:42,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:18:42,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195897223] [2021-11-25 19:18:42,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:18:42,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:18:42,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:18:42,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:18:42,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:18:42,833 INFO L87 Difference]: Start difference. First operand 9733 states and 13962 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (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) [2021-11-25 19:18:45,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:47,685 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:52,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:55,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:57,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:00,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:02,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:03,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:03,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:19:03,484 INFO L93 Difference]: Finished difference Result 9744 states and 13970 transitions. [2021-11-25 19:19:03,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:19:03,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (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 196 [2021-11-25 19:19:03,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:19:03,538 INFO L225 Difference]: With dead ends: 9744 [2021-11-25 19:19:03,538 INFO L226 Difference]: Without dead ends: 9742 [2021-11-25 19:19:03,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:19:03,545 INFO L933 BasicCegarLoop]: 2207 mSDtfsCounter, 2070 mSDsluCounter, 6277 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 7758 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:19:03,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2093 Valid, 7758 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1030 Invalid, 4 Unknown, 0 Unchecked, 20.3s Time] [2021-11-25 19:19:03,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9742 states. [2021-11-25 19:19:03,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9742 to 9737. [2021-11-25 19:19:04,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9737 states, 6092 states have (on average 1.3302692055154302) internal successors, (8104), 6258 states have internal predecessors, (8104), 2872 states have call successors, (2872), 782 states have call predecessors, (2872), 770 states have return successors, (2989), 2812 states have call predecessors, (2989), 2868 states have call successors, (2989) [2021-11-25 19:19:04,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9737 states to 9737 states and 13965 transitions. [2021-11-25 19:19:04,061 INFO L78 Accepts]: Start accepts. Automaton has 9737 states and 13965 transitions. Word has length 196 [2021-11-25 19:19:04,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:19:04,065 INFO L470 AbstractCegarLoop]: Abstraction has 9737 states and 13965 transitions. [2021-11-25 19:19:04,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (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) [2021-11-25 19:19:04,066 INFO L276 IsEmpty]: Start isEmpty. Operand 9737 states and 13965 transitions. [2021-11-25 19:19:04,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-25 19:19:04,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:04,073 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:19:04,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:19:04,074 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:19:04,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:04,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1841293873, now seen corresponding path program 1 times [2021-11-25 19:19:04,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:19:04,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871665232] [2021-11-25 19:19:04,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:04,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:19:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-11-25 19:19:04,476 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:19:04,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871665232] [2021-11-25 19:19:04,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871665232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:19:04,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:19:04,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:19:04,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857368227] [2021-11-25 19:19:04,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:19:04,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:19:04,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:19:04,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:19:04,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:19:04,479 INFO L87 Difference]: Start difference. First operand 9737 states and 13965 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 19:19:06,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:12,273 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:15,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:17,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:19,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:21,366 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:24,033 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:25,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:25,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:19:25,184 INFO L93 Difference]: Finished difference Result 9897 states and 14160 transitions. [2021-11-25 19:19:25,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:19:25,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 201 [2021-11-25 19:19:25,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:19:25,234 INFO L225 Difference]: With dead ends: 9897 [2021-11-25 19:19:25,234 INFO L226 Difference]: Without dead ends: 9895 [2021-11-25 19:19:25,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:19:25,242 INFO L933 BasicCegarLoop]: 1995 mSDtfsCounter, 2076 mSDsluCounter, 4799 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 6194 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:19:25,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2096 Valid, 6194 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 904 Invalid, 4 Unknown, 0 Unchecked, 20.4s Time] [2021-11-25 19:19:25,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9895 states. [2021-11-25 19:19:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9895 to 9891. [2021-11-25 19:19:25,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9891 states, 6173 states have (on average 1.328041470921756) internal successors, (8198), 6341 states have internal predecessors, (8198), 2918 states have call successors, (2918), 808 states have call predecessors, (2918), 797 states have return successors, (3040), 2858 states have call predecessors, (3040), 2914 states have call successors, (3040) [2021-11-25 19:19:25,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9891 states to 9891 states and 14156 transitions. [2021-11-25 19:19:25,775 INFO L78 Accepts]: Start accepts. Automaton has 9891 states and 14156 transitions. Word has length 201 [2021-11-25 19:19:25,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:19:25,776 INFO L470 AbstractCegarLoop]: Abstraction has 9891 states and 14156 transitions. [2021-11-25 19:19:25,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 19:19:25,777 INFO L276 IsEmpty]: Start isEmpty. Operand 9891 states and 14156 transitions. [2021-11-25 19:19:25,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-25 19:19:25,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:25,784 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 5, 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, 1, 1, 1, 1, 1] [2021-11-25 19:19:25,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:19:25,784 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:19:25,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:25,786 INFO L85 PathProgramCache]: Analyzing trace with hash -3001155, now seen corresponding path program 1 times [2021-11-25 19:19:25,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:19:25,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475314618] [2021-11-25 19:19:25,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:25,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:19:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2021-11-25 19:19:26,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:19:26,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475314618] [2021-11-25 19:19:26,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475314618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:19:26,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:19:26,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:19:26,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605076418] [2021-11-25 19:19:26,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:19:26,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:19:26,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:19:26,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:19:26,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:19:26,288 INFO L87 Difference]: Start difference. First operand 9891 states and 14156 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 19:19:28,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:33,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:36,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:38,693 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:41,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:43,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:19:43,337 INFO L93 Difference]: Finished difference Result 16577 states and 23807 transitions. [2021-11-25 19:19:43,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:19:43,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 205 [2021-11-25 19:19:43,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:19:43,431 INFO L225 Difference]: With dead ends: 16577 [2021-11-25 19:19:43,432 INFO L226 Difference]: Without dead ends: 16575 [2021-11-25 19:19:43,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:19:43,445 INFO L933 BasicCegarLoop]: 2354 mSDtfsCounter, 2081 mSDsluCounter, 7152 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2095 SdHoareTripleChecker+Valid, 8688 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:19:43,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2095 Valid, 8688 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1126 Invalid, 4 Unknown, 0 Unchecked, 16.6s Time] [2021-11-25 19:19:43,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16575 states. [2021-11-25 19:19:44,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16575 to 16560. [2021-11-25 19:19:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16560 states, 10340 states have (on average 1.3333655705996132) internal successors, (13787), 10666 states have internal predecessors, (13787), 4882 states have call successors, (4882), 1387 states have call predecessors, (4882), 1335 states have return successors, (5124), 4699 states have call predecessors, (5124), 4874 states have call successors, (5124) [2021-11-25 19:19:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16560 states to 16560 states and 23793 transitions. [2021-11-25 19:19:44,384 INFO L78 Accepts]: Start accepts. Automaton has 16560 states and 23793 transitions. Word has length 205 [2021-11-25 19:19:44,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:19:44,385 INFO L470 AbstractCegarLoop]: Abstraction has 16560 states and 23793 transitions. [2021-11-25 19:19:44,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 19:19:44,386 INFO L276 IsEmpty]: Start isEmpty. Operand 16560 states and 23793 transitions. [2021-11-25 19:19:44,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-25 19:19:44,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:44,398 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 4, 4, 4, 4, 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] [2021-11-25 19:19:44,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:19:44,398 INFO L402 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)] === [2021-11-25 19:19:44,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:44,399 INFO L85 PathProgramCache]: Analyzing trace with hash 673425878, now seen corresponding path program 1 times [2021-11-25 19:19:44,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:19:44,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634238495] [2021-11-25 19:19:44,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:44,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:19:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:44,936 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2021-11-25 19:19:44,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:19:44,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634238495] [2021-11-25 19:19:44,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634238495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:19:44,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:19:44,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:19:44,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796500970] [2021-11-25 19:19:44,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:19:44,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:19:44,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:19:44,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:19:44,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:19:44,942 INFO L87 Difference]: Start difference. First operand 16560 states and 23793 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 19:19:50,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:52,775 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:54,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:55,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:57,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:59,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:01,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:03,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:03,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:20:03,639 INFO L93 Difference]: Finished difference Result 16574 states and 23804 transitions. [2021-11-25 19:20:03,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:20:03,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 211 [2021-11-25 19:20:03,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:20:03,728 INFO L225 Difference]: With dead ends: 16574 [2021-11-25 19:20:03,729 INFO L226 Difference]: Without dead ends: 16572 [2021-11-25 19:20:03,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:20:03,741 INFO L933 BasicCegarLoop]: 1995 mSDtfsCounter, 2077 mSDsluCounter, 4799 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2095 SdHoareTripleChecker+Valid, 6194 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:20:03,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2095 Valid, 6194 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 904 Invalid, 4 Unknown, 0 Unchecked, 18.3s Time] [2021-11-25 19:20:03,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16572 states. [2021-11-25 19:20:04,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16572 to 16568. [2021-11-25 19:20:04,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16568 states, 10346 states have (on average 1.3331722404794124) internal successors, (13793), 10672 states have internal predecessors, (13793), 4882 states have call successors, (4882), 1389 states have call predecessors, (4882), 1337 states have return successors, (5124), 4699 states have call predecessors, (5124), 4874 states have call successors, (5124) [2021-11-25 19:20:04,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16568 states to 16568 states and 23799 transitions. [2021-11-25 19:20:04,815 INFO L78 Accepts]: Start accepts. Automaton has 16568 states and 23799 transitions. Word has length 211 [2021-11-25 19:20:04,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:20:04,817 INFO L470 AbstractCegarLoop]: Abstraction has 16568 states and 23799 transitions. [2021-11-25 19:20:04,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 19:20:04,818 INFO L276 IsEmpty]: Start isEmpty. Operand 16568 states and 23799 transitions. [2021-11-25 19:20:04,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-25 19:20:04,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:20:04,832 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:20:04,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:20:04,832 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:20:04,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:20:04,833 INFO L85 PathProgramCache]: Analyzing trace with hash 806792797, now seen corresponding path program 1 times [2021-11-25 19:20:04,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:20:04,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042511123] [2021-11-25 19:20:04,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:04,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:20:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:20:05,192 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked. [2021-11-25 19:20:05,192 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:20:05,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042511123] [2021-11-25 19:20:05,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042511123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:20:05,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:20:05,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:20:05,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294614995] [2021-11-25 19:20:05,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:20:05,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:20:05,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:20:05,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:20:05,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:20:05,196 INFO L87 Difference]: Start difference. First operand 16568 states and 23799 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 19:20:11,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:14,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:16,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:18,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:21,824 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:23,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:23,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:20:23,586 INFO L93 Difference]: Finished difference Result 16583 states and 23811 transitions. [2021-11-25 19:20:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:20:23,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 215 [2021-11-25 19:20:23,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:20:23,769 INFO L225 Difference]: With dead ends: 16583 [2021-11-25 19:20:23,769 INFO L226 Difference]: Without dead ends: 16581 [2021-11-25 19:20:23,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:20:23,776 INFO L933 BasicCegarLoop]: 2207 mSDtfsCounter, 2069 mSDsluCounter, 6277 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 7758 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:20:23,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2088 Valid, 7758 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1030 Invalid, 4 Unknown, 0 Unchecked, 17.8s Time] [2021-11-25 19:20:23,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16581 states. [2021-11-25 19:20:24,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16581 to 16576. [2021-11-25 19:20:24,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16576 states, 10352 states have (on average 1.3329791344667696) internal successors, (13799), 10678 states have internal predecessors, (13799), 4882 states have call successors, (4882), 1391 states have call predecessors, (4882), 1339 states have return successors, (5124), 4699 states have call predecessors, (5124), 4874 states have call successors, (5124) [2021-11-25 19:20:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16576 states to 16576 states and 23805 transitions. [2021-11-25 19:20:24,666 INFO L78 Accepts]: Start accepts. Automaton has 16576 states and 23805 transitions. Word has length 215 [2021-11-25 19:20:24,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:20:24,667 INFO L470 AbstractCegarLoop]: Abstraction has 16576 states and 23805 transitions. [2021-11-25 19:20:24,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 19:20:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 16576 states and 23805 transitions. [2021-11-25 19:20:24,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-25 19:20:24,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:20:24,677 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:20:24,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:20:24,678 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:20:24,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:20:24,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1603712570, now seen corresponding path program 1 times [2021-11-25 19:20:24,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:20:24,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922693531] [2021-11-25 19:20:24,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:24,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:20:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:20:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2021-11-25 19:20:24,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:20:24,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922693531] [2021-11-25 19:20:24,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922693531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:20:24,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:20:24,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:20:24,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821831462] [2021-11-25 19:20:24,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:20:24,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:20:24,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:20:24,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:20:24,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:20:24,951 INFO L87 Difference]: Start difference. First operand 16576 states and 23805 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 19:20:30,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:33,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:35,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:37,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:38,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:20:38,292 INFO L93 Difference]: Finished difference Result 36484 states and 52439 transitions. [2021-11-25 19:20:38,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:20:38,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 211 [2021-11-25 19:20:38,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:20:38,412 INFO L225 Difference]: With dead ends: 36484 [2021-11-25 19:20:38,412 INFO L226 Difference]: Without dead ends: 20228 [2021-11-25 19:20:38,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:20:38,502 INFO L933 BasicCegarLoop]: 2443 mSDtfsCounter, 845 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 15 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 4337 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:20:38,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [845 Valid, 4337 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 693 Invalid, 4 Unknown, 0 Unchecked, 12.6s Time] [2021-11-25 19:20:38,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20228 states. [2021-11-25 19:20:40,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20228 to 20124. [2021-11-25 19:20:40,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20124 states, 12611 states have (on average 1.334628498929506) internal successors, (16831), 13005 states have internal predecessors, (16831), 5888 states have call successors, (5888), 1693 states have call predecessors, (5888), 1622 states have return successors, (6130), 5634 states have call predecessors, (6130), 5880 states have call successors, (6130) [2021-11-25 19:20:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20124 states to 20124 states and 28849 transitions. [2021-11-25 19:20:40,249 INFO L78 Accepts]: Start accepts. Automaton has 20124 states and 28849 transitions. Word has length 211 [2021-11-25 19:20:40,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:20:40,250 INFO L470 AbstractCegarLoop]: Abstraction has 20124 states and 28849 transitions. [2021-11-25 19:20:40,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 19:20:40,250 INFO L276 IsEmpty]: Start isEmpty. Operand 20124 states and 28849 transitions. [2021-11-25 19:20:40,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-25 19:20:40,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:20:40,262 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 7, 6, 6, 4, 4, 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] [2021-11-25 19:20:40,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:20:40,263 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:20:40,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:20:40,263 INFO L85 PathProgramCache]: Analyzing trace with hash 141045814, now seen corresponding path program 1 times [2021-11-25 19:20:40,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:20:40,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157235491] [2021-11-25 19:20:40,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:40,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:20:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:20:40,663 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2021-11-25 19:20:40,663 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:20:40,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157235491] [2021-11-25 19:20:40,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157235491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:20:40,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:20:40,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:20:40,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180909434] [2021-11-25 19:20:40,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:20:40,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:20:40,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:20:40,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:20:40,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:20:40,666 INFO L87 Difference]: Start difference. First operand 20124 states and 28849 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 19:20:44,501 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:45,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:48,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:51,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:53,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:57,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:59,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:00,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:00,490 INFO L93 Difference]: Finished difference Result 29526 states and 42280 transitions. [2021-11-25 19:21:00,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:21:00,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 221 [2021-11-25 19:21:00,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:00,576 INFO L225 Difference]: With dead ends: 29526 [2021-11-25 19:21:00,576 INFO L226 Difference]: Without dead ends: 29524 [2021-11-25 19:21:00,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:21:00,587 INFO L933 BasicCegarLoop]: 2397 mSDtfsCounter, 2067 mSDsluCounter, 7520 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2085 SdHoareTripleChecker+Valid, 9072 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:00,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2085 Valid, 9072 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1149 Invalid, 5 Unknown, 0 Unchecked, 19.0s Time] [2021-11-25 19:21:00,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29524 states. [2021-11-25 19:21:01,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29524 to 29517. [2021-11-25 19:21:01,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29517 states, 18517 states have (on average 1.334881460279743) internal successors, (24718), 19065 states have internal predecessors, (24718), 8613 states have call successors, (8613), 2470 states have call predecessors, (8613), 2384 states have return successors, (8943), 8280 states have call predecessors, (8943), 8601 states have call successors, (8943) [2021-11-25 19:21:01,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29517 states to 29517 states and 42274 transitions. [2021-11-25 19:21:02,002 INFO L78 Accepts]: Start accepts. Automaton has 29517 states and 42274 transitions. Word has length 221 [2021-11-25 19:21:02,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:02,003 INFO L470 AbstractCegarLoop]: Abstraction has 29517 states and 42274 transitions. [2021-11-25 19:21:02,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 19:21:02,004 INFO L276 IsEmpty]: Start isEmpty. Operand 29517 states and 42274 transitions. [2021-11-25 19:21:02,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-25 19:21:02,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:02,013 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 8, 7, 7, 4, 4, 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] [2021-11-25 19:21:02,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:21:02,014 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:21:02,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:02,014 INFO L85 PathProgramCache]: Analyzing trace with hash 841767911, now seen corresponding path program 1 times [2021-11-25 19:21:02,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:02,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773918996] [2021-11-25 19:21:02,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:02,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:02,366 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 751 trivial. 0 not checked. [2021-11-25 19:21:02,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:02,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773918996] [2021-11-25 19:21:02,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773918996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:02,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:02,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:21:02,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237038837] [2021-11-25 19:21:02,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:02,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:21:02,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:02,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:21:02,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:21:02,369 INFO L87 Difference]: Start difference. First operand 29517 states and 42274 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (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) [2021-11-25 19:21:05,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:07,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:10,831 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:13,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:15,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:18,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:20,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:21,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:22,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:22,745 INFO L93 Difference]: Finished difference Result 30268 states and 43194 transitions. [2021-11-25 19:21:22,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:21:22,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (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 226 [2021-11-25 19:21:22,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:22,846 INFO L225 Difference]: With dead ends: 30268 [2021-11-25 19:21:22,846 INFO L226 Difference]: Without dead ends: 30266 [2021-11-25 19:21:22,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:21:22,860 INFO L933 BasicCegarLoop]: 2220 mSDtfsCounter, 2021 mSDsluCounter, 6310 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2043 SdHoareTripleChecker+Valid, 7797 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:22,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2043 Valid, 7797 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1041 Invalid, 5 Unknown, 0 Unchecked, 19.5s Time] [2021-11-25 19:21:22,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30266 states. [2021-11-25 19:21:24,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30266 to 30245. [2021-11-25 19:21:24,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30245 states, 18962 states have (on average 1.3333509123510179) internal successors, (25283), 19538 states have internal predecessors, (25283), 8757 states have call successors, (8757), 2605 states have call predecessors, (8757), 2523 states have return successors, (9107), 8424 states have call predecessors, (9107), 8745 states have call successors, (9107) [2021-11-25 19:21:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30245 states to 30245 states and 43147 transitions. [2021-11-25 19:21:24,365 INFO L78 Accepts]: Start accepts. Automaton has 30245 states and 43147 transitions. Word has length 226 [2021-11-25 19:21:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:24,366 INFO L470 AbstractCegarLoop]: Abstraction has 30245 states and 43147 transitions. [2021-11-25 19:21:24,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (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) [2021-11-25 19:21:24,367 INFO L276 IsEmpty]: Start isEmpty. Operand 30245 states and 43147 transitions. [2021-11-25 19:21:24,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-25 19:21:24,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:24,377 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 9, 8, 8, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:21:24,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 19:21:24,378 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:21:24,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:24,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1444407232, now seen corresponding path program 1 times [2021-11-25 19:21:24,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:24,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499727632] [2021-11-25 19:21:24,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:24,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2021-11-25 19:21:24,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:24,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499727632] [2021-11-25 19:21:24,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499727632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:24,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:24,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:21:24,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932904815] [2021-11-25 19:21:24,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:24,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:21:24,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:24,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:21:24,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:21:24,799 INFO L87 Difference]: Start difference. First operand 30245 states and 43147 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-25 19:21:29,391 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:33,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:36,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:38,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:40,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:42,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:44,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:49,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:49,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:49,902 INFO L93 Difference]: Finished difference Result 32096 states and 45745 transitions. [2021-11-25 19:21:49,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:21:49,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 230 [2021-11-25 19:21:49,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:50,017 INFO L225 Difference]: With dead ends: 32096 [2021-11-25 19:21:50,017 INFO L226 Difference]: Without dead ends: 32094 [2021-11-25 19:21:50,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:21:50,028 INFO L933 BasicCegarLoop]: 2399 mSDtfsCounter, 2073 mSDsluCounter, 7527 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2087 SdHoareTripleChecker+Valid, 9078 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:50,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2087 Valid, 9078 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1151 Invalid, 6 Unknown, 0 Unchecked, 23.9s Time] [2021-11-25 19:21:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32094 states. [2021-11-25 19:21:51,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32094 to 32087. [2021-11-25 19:21:51,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32087 states, 20101 states have (on average 1.3317247898114521) internal successors, (26769), 20711 states have internal predecessors, (26769), 9293 states have call successors, (9293), 2777 states have call predecessors, (9293), 2690 states have return successors, (9677), 8952 states have call predecessors, (9677), 9281 states have call successors, (9677) [2021-11-25 19:21:51,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32087 states to 32087 states and 45739 transitions. [2021-11-25 19:21:51,591 INFO L78 Accepts]: Start accepts. Automaton has 32087 states and 45739 transitions. Word has length 230 [2021-11-25 19:21:51,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:51,592 INFO L470 AbstractCegarLoop]: Abstraction has 32087 states and 45739 transitions. [2021-11-25 19:21:51,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-25 19:21:51,593 INFO L276 IsEmpty]: Start isEmpty. Operand 32087 states and 45739 transitions. [2021-11-25 19:21:51,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-25 19:21:51,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:51,601 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 10, 9, 9, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:21:51,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 19:21:51,602 INFO L402 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)] === [2021-11-25 19:21:51,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:51,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1649927779, now seen corresponding path program 1 times [2021-11-25 19:21:51,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:51,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337957014] [2021-11-25 19:21:51,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:51,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:52,119 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 814 trivial. 0 not checked. [2021-11-25 19:21:52,119 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:52,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337957014] [2021-11-25 19:21:52,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337957014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:52,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:52,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:21:52,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48621665] [2021-11-25 19:21:52,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:52,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:21:52,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:52,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:21:52,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:21:52,122 INFO L87 Difference]: Start difference. First operand 32087 states and 45739 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 19:21:57,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:59,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:02,482 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:04,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:08,033 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:09,249 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:11,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:12,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:12,502 INFO L93 Difference]: Finished difference Result 32106 states and 45755 transitions. [2021-11-25 19:22:12,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:22:12,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (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 [2021-11-25 19:22:12,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:12,602 INFO L225 Difference]: With dead ends: 32106 [2021-11-25 19:22:12,603 INFO L226 Difference]: Without dead ends: 32104 [2021-11-25 19:22:12,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:22:12,617 INFO L933 BasicCegarLoop]: 2201 mSDtfsCounter, 2069 mSDsluCounter, 6263 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 7740 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:12,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2084 Valid, 7740 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1028 Invalid, 3 Unknown, 0 Unchecked, 19.4s Time] [2021-11-25 19:22:12,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32104 states. [2021-11-25 19:22:13,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32104 to 32099. [2021-11-25 19:22:13,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32099 states, 20110 states have (on average 1.331576330183988) internal successors, (26778), 20720 states have internal predecessors, (26778), 9293 states have call successors, (9293), 2780 states have call predecessors, (9293), 2693 states have return successors, (9677), 8952 states have call predecessors, (9677), 9281 states have call successors, (9677) [2021-11-25 19:22:14,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32099 states to 32099 states and 45748 transitions. [2021-11-25 19:22:14,066 INFO L78 Accepts]: Start accepts. Automaton has 32099 states and 45748 transitions. Word has length 235 [2021-11-25 19:22:14,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:14,067 INFO L470 AbstractCegarLoop]: Abstraction has 32099 states and 45748 transitions. [2021-11-25 19:22:14,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 19:22:14,068 INFO L276 IsEmpty]: Start isEmpty. Operand 32099 states and 45748 transitions. [2021-11-25 19:22:14,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-25 19:22:14,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:14,079 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 11, 10, 10, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:22:14,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 19:22:14,079 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:22:14,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:14,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1627230799, now seen corresponding path program 1 times [2021-11-25 19:22:14,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:22:14,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901606968] [2021-11-25 19:22:14,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:14,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:22:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:14,724 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2021-11-25 19:22:14,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:14,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901606968] [2021-11-25 19:22:14,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901606968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:14,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:14,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:22:14,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732834335] [2021-11-25 19:22:14,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:14,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:22:14,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:22:14,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:22:14,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:22:14,726 INFO L87 Difference]: Start difference. First operand 32099 states and 45748 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 19:22:20,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:22,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:24,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:27,923 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:30,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:32,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:35,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:38,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:39,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:39,083 INFO L93 Difference]: Finished difference Result 32112 states and 45757 transitions. [2021-11-25 19:22:39,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:22:39,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (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 241 [2021-11-25 19:22:39,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:39,175 INFO L225 Difference]: With dead ends: 32112 [2021-11-25 19:22:39,175 INFO L226 Difference]: Without dead ends: 32110 [2021-11-25 19:22:39,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:22:39,185 INFO L933 BasicCegarLoop]: 2399 mSDtfsCounter, 2073 mSDsluCounter, 7527 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2085 SdHoareTripleChecker+Valid, 9078 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:39,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2085 Valid, 9078 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1152 Invalid, 5 Unknown, 0 Unchecked, 23.0s Time] [2021-11-25 19:22:39,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32110 states. [2021-11-25 19:22:40,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32110 to 32103. [2021-11-25 19:22:40,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32103 states, 20113 states have (on average 1.3315268731666086) internal successors, (26781), 20723 states have internal predecessors, (26781), 9293 states have call successors, (9293), 2781 states have call predecessors, (9293), 2694 states have return successors, (9677), 8952 states have call predecessors, (9677), 9281 states have call successors, (9677) [2021-11-25 19:22:40,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32103 states to 32103 states and 45751 transitions. [2021-11-25 19:22:40,646 INFO L78 Accepts]: Start accepts. Automaton has 32103 states and 45751 transitions. Word has length 241 [2021-11-25 19:22:40,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:40,647 INFO L470 AbstractCegarLoop]: Abstraction has 32103 states and 45751 transitions. [2021-11-25 19:22:40,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 19:22:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 32103 states and 45751 transitions. [2021-11-25 19:22:40,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-25 19:22:40,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:40,654 INFO L514 BasicCegarLoop]: trace histogram [17, 12, 12, 12, 12, 12, 12, 4, 4, 3, 3, 3, 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] [2021-11-25 19:22:40,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 19:22:40,654 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:22:40,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:40,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1905663277, now seen corresponding path program 1 times [2021-11-25 19:22:40,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:22:40,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826629857] [2021-11-25 19:22:40,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:40,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:22:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2021-11-25 19:22:40,919 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:40,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826629857] [2021-11-25 19:22:40,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826629857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:40,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:22:40,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:22:40,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996004147] [2021-11-25 19:22:40,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:40,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:22:40,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:22:40,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:22:40,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:22:40,922 INFO L87 Difference]: Start difference. First operand 32103 states and 45751 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 19:22:47,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:51,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:53,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:55,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:57,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:59,705 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:00,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:23:00,885 INFO L93 Difference]: Finished difference Result 76808 states and 109533 transitions. [2021-11-25 19:23:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:23:00,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 237 [2021-11-25 19:23:00,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:23:01,045 INFO L225 Difference]: With dead ends: 76808 [2021-11-25 19:23:01,045 INFO L226 Difference]: Without dead ends: 45025 [2021-11-25 19:23:01,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:23:01,147 INFO L933 BasicCegarLoop]: 3656 mSDtfsCounter, 1980 mSDsluCounter, 2198 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 5579 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:23:01,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1991 Valid, 5579 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 841 Invalid, 5 Unknown, 0 Unchecked, 18.2s Time] [2021-11-25 19:23:01,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45025 states. [2021-11-25 19:23:03,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45025 to 44815. [2021-11-25 19:23:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44815 states, 28133 states have (on average 1.3341271816016778) internal successors, (37533), 29013 states have internal predecessors, (37533), 12930 states have call successors, (12930), 3863 states have call predecessors, (12930), 3749 states have return successors, (13478), 12436 states have call predecessors, (13478), 12918 states have call successors, (13478) [2021-11-25 19:23:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44815 states to 44815 states and 63941 transitions. [2021-11-25 19:23:03,434 INFO L78 Accepts]: Start accepts. Automaton has 44815 states and 63941 transitions. Word has length 237 [2021-11-25 19:23:03,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:23:03,435 INFO L470 AbstractCegarLoop]: Abstraction has 44815 states and 63941 transitions. [2021-11-25 19:23:03,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 19:23:03,435 INFO L276 IsEmpty]: Start isEmpty. Operand 44815 states and 63941 transitions. [2021-11-25 19:23:03,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-25 19:23:03,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:23:03,445 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 12, 11, 11, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:23:03,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 19:23:03,446 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:23:03,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:23:03,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1504638147, now seen corresponding path program 1 times [2021-11-25 19:23:03,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:23:03,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19265105] [2021-11-25 19:23:03,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:23:03,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:23:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:23:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2021-11-25 19:23:03,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:23:03,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19265105] [2021-11-25 19:23:03,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19265105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:23:03,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:23:03,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:23:03,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880331151] [2021-11-25 19:23:03,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:23:03,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:23:03,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:23:03,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:23:03,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:23:03,999 INFO L87 Difference]: Start difference. First operand 44815 states and 63941 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-25 19:23:08,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:11,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:14,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:16,735 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:19,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:21,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:23,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:25,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:23:25,255 INFO L93 Difference]: Finished difference Result 44834 states and 63957 transitions. [2021-11-25 19:23:25,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:23:25,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 245 [2021-11-25 19:23:25,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:23:25,435 INFO L225 Difference]: With dead ends: 44834 [2021-11-25 19:23:25,435 INFO L226 Difference]: Without dead ends: 44832 [2021-11-25 19:23:25,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:23:25,453 INFO L933 BasicCegarLoop]: 2201 mSDtfsCounter, 2069 mSDsluCounter, 6263 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 7740 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:23:25,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2082 Valid, 7740 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1026 Invalid, 5 Unknown, 0 Unchecked, 19.5s Time] [2021-11-25 19:23:25,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44832 states. [2021-11-25 19:23:27,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44832 to 44827. [2021-11-25 19:23:27,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44827 states, 28142 states have (on average 1.334020325492147) internal successors, (37542), 29022 states have internal predecessors, (37542), 12930 states have call successors, (12930), 3866 states have call predecessors, (12930), 3752 states have return successors, (13478), 12436 states have call predecessors, (13478), 12918 states have call successors, (13478) [2021-11-25 19:23:28,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44827 states to 44827 states and 63950 transitions. [2021-11-25 19:23:28,048 INFO L78 Accepts]: Start accepts. Automaton has 44827 states and 63950 transitions. Word has length 245 [2021-11-25 19:23:28,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:23:28,049 INFO L470 AbstractCegarLoop]: Abstraction has 44827 states and 63950 transitions. [2021-11-25 19:23:28,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-25 19:23:28,050 INFO L276 IsEmpty]: Start isEmpty. Operand 44827 states and 63950 transitions. [2021-11-25 19:23:28,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-25 19:23:28,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:23:28,060 INFO L514 BasicCegarLoop]: trace histogram [16, 13, 12, 12, 12, 12, 12, 12, 12, 12, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:23:28,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 19:23:28,060 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:23:28,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:23:28,061 INFO L85 PathProgramCache]: Analyzing trace with hash -954743808, now seen corresponding path program 1 times [2021-11-25 19:23:28,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:23:28,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107819396] [2021-11-25 19:23:28,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:23:28,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:23:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:23:28,408 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2021-11-25 19:23:28,408 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:23:28,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107819396] [2021-11-25 19:23:28,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107819396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:23:28,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:23:28,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:23:28,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415373738] [2021-11-25 19:23:28,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:23:28,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:23:28,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:23:28,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:23:28,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:23:28,412 INFO L87 Difference]: Start difference. First operand 44827 states and 63950 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (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) [2021-11-25 19:23:35,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:38,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:40,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:44,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:46,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:49,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:23:49,463 INFO L93 Difference]: Finished difference Result 87377 states and 126206 transitions. [2021-11-25 19:23:49,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:23:49,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (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 250 [2021-11-25 19:23:49,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:23:50,165 INFO L225 Difference]: With dead ends: 87377 [2021-11-25 19:23:50,165 INFO L226 Difference]: Without dead ends: 87373 [2021-11-25 19:23:50,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:23:50,192 INFO L933 BasicCegarLoop]: 2410 mSDtfsCounter, 2056 mSDsluCounter, 7528 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2061 SdHoareTripleChecker+Valid, 9083 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:23:50,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2061 Valid, 9083 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1169 Invalid, 4 Unknown, 0 Unchecked, 17.6s Time] [2021-11-25 19:23:50,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87373 states. [2021-11-25 19:23:54,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87373 to 87318. [2021-11-25 19:23:54,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87318 states, 55068 states have (on average 1.3363841069223505) internal successors, (73592), 56829 states have internal predecessors, (73592), 25080 states have call successors, (25080), 7456 states have call predecessors, (25080), 7167 states have return successors, (27452), 23980 states have call predecessors, (27452), 25056 states have call successors, (27452) [2021-11-25 19:23:54,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87318 states to 87318 states and 126124 transitions. [2021-11-25 19:23:54,993 INFO L78 Accepts]: Start accepts. Automaton has 87318 states and 126124 transitions. Word has length 250 [2021-11-25 19:23:54,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:23:54,993 INFO L470 AbstractCegarLoop]: Abstraction has 87318 states and 126124 transitions. [2021-11-25 19:23:54,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (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) [2021-11-25 19:23:54,994 INFO L276 IsEmpty]: Start isEmpty. Operand 87318 states and 126124 transitions. [2021-11-25 19:23:55,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-25 19:23:55,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:23:55,004 INFO L514 BasicCegarLoop]: trace histogram [16, 14, 13, 13, 12, 12, 12, 12, 12, 12, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:23:55,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 19:23:55,004 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:23:55,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:23:55,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2057446621, now seen corresponding path program 1 times [2021-11-25 19:23:55,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:23:55,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853502179] [2021-11-25 19:23:55,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:23:55,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:23:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:23:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 982 trivial. 0 not checked. [2021-11-25 19:23:55,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:23:55,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853502179] [2021-11-25 19:23:55,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853502179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:23:55,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:23:55,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:23:55,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553778543] [2021-11-25 19:23:55,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:23:55,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:23:55,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:23:55,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:23:55,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:23:55,405 INFO L87 Difference]: Start difference. First operand 87318 states and 126124 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-25 19:23:59,166 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:24:02,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:24:05,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:24:07,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:24:09,987 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:24:13,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:24:16,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:24:16,049 INFO L93 Difference]: Finished difference Result 87345 states and 126148 transitions. [2021-11-25 19:24:16,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:24:16,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 255 [2021-11-25 19:24:16,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:24:16,465 INFO L225 Difference]: With dead ends: 87345 [2021-11-25 19:24:16,465 INFO L226 Difference]: Without dead ends: 87087 [2021-11-25 19:24:16,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:24:16,507 INFO L933 BasicCegarLoop]: 2208 mSDtfsCounter, 2069 mSDsluCounter, 6279 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2080 SdHoareTripleChecker+Valid, 7761 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:24:16,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2080 Valid, 7761 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1027 Invalid, 4 Unknown, 0 Unchecked, 17.6s Time] [2021-11-25 19:24:16,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87087 states. [2021-11-25 19:24:21,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87087 to 87082. [2021-11-25 19:24:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87082 states, 54990 states have (on average 1.3358610656482997) internal successors, (73459), 56697 states have internal predecessors, (73459), 24946 states have call successors, (24946), 7419 states have call predecessors, (24946), 7143 states have return successors, (27322), 23913 states have call predecessors, (27322), 24926 states have call successors, (27322) [2021-11-25 19:24:21,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87082 states to 87082 states and 125727 transitions. [2021-11-25 19:24:21,441 INFO L78 Accepts]: Start accepts. Automaton has 87082 states and 125727 transitions. Word has length 255 [2021-11-25 19:24:21,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:24:21,441 INFO L470 AbstractCegarLoop]: Abstraction has 87082 states and 125727 transitions. [2021-11-25 19:24:21,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-25 19:24:21,442 INFO L276 IsEmpty]: Start isEmpty. Operand 87082 states and 125727 transitions. [2021-11-25 19:24:21,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-25 19:24:21,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:24:21,451 INFO L514 BasicCegarLoop]: trace histogram [19, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 2, 2, 2, 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] [2021-11-25 19:24:21,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 19:24:21,452 INFO L402 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)] === [2021-11-25 19:24:21,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:24:21,452 INFO L85 PathProgramCache]: Analyzing trace with hash 133342315, now seen corresponding path program 1 times [2021-11-25 19:24:21,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:24:21,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990996633] [2021-11-25 19:24:21,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:24:21,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:24:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:24:21,704 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2021-11-25 19:24:21,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:24:21,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990996633] [2021-11-25 19:24:21,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990996633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:24:21,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:24:21,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:24:21,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018582347] [2021-11-25 19:24:21,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:24:21,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:24:21,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:24:21,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:24:21,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:24:21,708 INFO L87 Difference]: Start difference. First operand 87082 states and 125727 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 4 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-25 19:24:27,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:24:28,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:24:31,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:24:35,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:24:40,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:24:42,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:24:45,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:24:49,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:24:49,917 INFO L93 Difference]: Finished difference Result 198999 states and 287281 transitions. [2021-11-25 19:24:49,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:24:49,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 4 states have call predecessors, (28), 3 states have call successors, (28) Word has length 262 [2021-11-25 19:24:49,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:24:50,527 INFO L225 Difference]: With dead ends: 198999 [2021-11-25 19:24:50,527 INFO L226 Difference]: Without dead ends: 112237 [2021-11-25 19:24:50,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:24:50,766 INFO L933 BasicCegarLoop]: 3651 mSDtfsCounter, 1967 mSDsluCounter, 10582 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 12876 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:24:50,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1978 Valid, 12876 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1931 Invalid, 4 Unknown, 0 Unchecked, 22.4s Time] [2021-11-25 19:24:50,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112237 states.