./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V --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 98d50d623f72baafe13ab6a5d1ec3f840fccd437bd559cdde24b5507886949f9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:34:13,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:34:13,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:34:13,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:34:13,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:34:13,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:34:13,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:34:13,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:34:13,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:34:13,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:34:13,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:34:13,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:34:13,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:34:13,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:34:13,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:34:13,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:34:13,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:34:13,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:34:13,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:34:13,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:34:13,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:34:13,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:34:13,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:34:13,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:34:13,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:34:13,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:34:13,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:34:13,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:34:13,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:34:13,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:34:13,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:34:13,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:34:13,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:34:13,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:34:13,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:34:13,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:34:13,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:34:13,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:34:13,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:34:13,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:34:13,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:34:13,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:34:13,485 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:34:13,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:34:13,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:34:13,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:34:13,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:34:13,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:34:13,494 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:34:13,494 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:34:13,495 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:34:13,495 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:34:13,496 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:34:13,496 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:34:13,496 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:34:13,497 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:34:13,497 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:34:13,497 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:34:13,497 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:34:13,498 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:34:13,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:34:13,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:34:13,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:34:13,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:34:13,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:34:13,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:34:13,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:34:13,500 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:34:13,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:34:13,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:34:13,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:34:13,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:34:13,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:34:13,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:34:13,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:34:13,502 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:34:13,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:34:13,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:34:13,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:34:13,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:34:13,503 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_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98d50d623f72baafe13ab6a5d1ec3f840fccd437bd559cdde24b5507886949f9 [2021-11-23 02:34:13,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:34:13,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:34:13,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:34:13,833 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:34:13,834 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:34:13,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i [2021-11-23 02:34:13,910 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/data/2869d27e2/044b2d488eaf417e83384f13106afe6c/FLAGd39f3b181 [2021-11-23 02:34:15,001 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:34:15,001 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i [2021-11-23 02:34:15,057 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/data/2869d27e2/044b2d488eaf417e83384f13106afe6c/FLAGd39f3b181 [2021-11-23 02:34:15,253 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/data/2869d27e2/044b2d488eaf417e83384f13106afe6c [2021-11-23 02:34:15,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:34:15,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:34:15,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:34:15,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:34:15,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:34:15,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:34:15" (1/1) ... [2021-11-23 02:34:15,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c26df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:15, skipping insertion in model container [2021-11-23 02:34:15,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:34:15" (1/1) ... [2021-11-23 02:34:15,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:34:15,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:34:19,512 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_9323682c-8c4a-442b-b7d8-f163d6791603/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i[515692,515705] [2021-11-23 02:34:19,515 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_9323682c-8c4a-442b-b7d8-f163d6791603/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i[515861,515874] [2021-11-23 02:34:19,516 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_9323682c-8c4a-442b-b7d8-f163d6791603/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i[516028,516041] [2021-11-23 02:34:19,516 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_9323682c-8c4a-442b-b7d8-f163d6791603/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i[516196,516209] [2021-11-23 02:34:19,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:34:19,586 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:34:20,373 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_9323682c-8c4a-442b-b7d8-f163d6791603/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i[515692,515705] [2021-11-23 02:34:20,374 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_9323682c-8c4a-442b-b7d8-f163d6791603/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i[515861,515874] [2021-11-23 02:34:20,374 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_9323682c-8c4a-442b-b7d8-f163d6791603/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i[516028,516041] [2021-11-23 02:34:20,375 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_9323682c-8c4a-442b-b7d8-f163d6791603/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i[516196,516209] [2021-11-23 02:34:20,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:34:20,698 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:34:20,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:20 WrapperNode [2021-11-23 02:34:20,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:34:20,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:34:20,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:34:20,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:34:20,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:20" (1/1) ... [2021-11-23 02:34:20,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:20" (1/1) ... [2021-11-23 02:34:21,570 INFO L137 Inliner]: procedures = 394, calls = 6166, calls flagged for inlining = 164, calls inlined = 141, statements flattened = 16285 [2021-11-23 02:34:21,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:34:21,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:34:21,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:34:21,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:34:21,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:20" (1/1) ... [2021-11-23 02:34:21,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:20" (1/1) ... [2021-11-23 02:34:21,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:20" (1/1) ... [2021-11-23 02:34:21,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:20" (1/1) ... [2021-11-23 02:34:22,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:20" (1/1) ... [2021-11-23 02:34:22,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:20" (1/1) ... [2021-11-23 02:34:22,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:20" (1/1) ... [2021-11-23 02:34:22,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:34:22,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:34:22,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:34:22,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:34:22,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:20" (1/1) ... [2021-11-23 02:34:22,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:34:22,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:34:22,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:34:22,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:34:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-23 02:34:22,518 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-23 02:34:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure to_sd [2021-11-23 02:34:22,519 INFO L138 BoogieDeclarations]: Found implementation of procedure to_sd [2021-11-23 02:34:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_s_tuner [2021-11-23 02:34:22,519 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_s_tuner [2021-11-23 02:34:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:34:22,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:34:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx2388x [2021-11-23 02:34:22,520 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx2388x [2021-11-23 02:34:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_g_tuner [2021-11-23 02:34:22,520 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_g_tuner [2021-11-23 02:34:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx2583x [2021-11-23 02:34:22,520 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx2583x [2021-11-23 02:34:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:34:22,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:34:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure to_ir_state [2021-11-23 02:34:22,521 INFO L138 BoogieDeclarations]: Found implementation of procedure to_ir_state [2021-11-23 02:34:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure pulse_width_count_to_ns [2021-11-23 02:34:22,521 INFO L138 BoogieDeclarations]: Found implementation of procedure pulse_width_count_to_ns [2021-11-23 02:34:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_53 [2021-11-23 02:34:22,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_53 [2021-11-23 02:34:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:34:22,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 02:34:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2021-11-23 02:34:22,522 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2021-11-23 02:34:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_kfifo_lock_of_cx25840_ir_state [2021-11-23 02:34:22,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_kfifo_lock_of_cx25840_ir_state [2021-11-23 02:34:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-23 02:34:22,523 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-23 02:34:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:34:22,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:34:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_g_sliced_fmt [2021-11-23 02:34:22,524 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_g_sliced_fmt [2021-11-23 02:34:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:34:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2021-11-23 02:34:22,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2021-11-23 02:34:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure clock_divider_to_resolution [2021-11-23 02:34:22,525 INFO L138 BoogieDeclarations]: Found implementation of procedure clock_divider_to_resolution [2021-11-23 02:34:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-23 02:34:22,525 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-23 02:34:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:34:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure cx25836_initialize [2021-11-23 02:34:22,526 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25836_initialize [2021-11-23 02:34:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_write4 [2021-11-23 02:34:22,528 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_write4 [2021-11-23 02:34:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_s_ext_ctrls [2021-11-23 02:34:22,528 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_s_ext_ctrls [2021-11-23 02:34:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:34:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_s_frequency [2021-11-23 02:34:22,528 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_s_frequency [2021-11-23 02:34:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 02:34:22,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 02:34:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_std_setup [2021-11-23 02:34:22,529 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_std_setup [2021-11-23 02:34:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:34:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-11-23 02:34:22,530 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-11-23 02:34:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:34:22,531 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:34:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure control_tx_modulation_enable [2021-11-23 02:34:22,531 INFO L138 BoogieDeclarations]: Found implementation of procedure control_tx_modulation_enable [2021-11-23 02:34:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure cx23885_initialize [2021-11-23 02:34:22,531 INFO L138 BoogieDeclarations]: Found implementation of procedure cx23885_initialize [2021-11-23 02:34:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_s_raw_fmt [2021-11-23 02:34:22,532 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_s_raw_fmt [2021-11-23 02:34:22,532 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_and_or [2021-11-23 02:34:22,533 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_and_or [2021-11-23 02:34:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_s_ctrl [2021-11-23 02:34:22,533 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_s_ctrl [2021-11-23 02:34:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure set_audclk_freq [2021-11-23 02:34:22,533 INFO L138 BoogieDeclarations]: Found implementation of procedure set_audclk_freq [2021-11-23 02:34:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_rx_g_parameters [2021-11-23 02:34:22,534 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_rx_g_parameters [2021-11-23 02:34:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_initialize [2021-11-23 02:34:22,534 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_initialize [2021-11-23 02:34:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_g_input_status [2021-11-23 02:34:22,535 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_g_input_status [2021-11-23 02:34:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure lpf_count_to_ns [2021-11-23 02:34:22,535 INFO L138 BoogieDeclarations]: Found implementation of procedure lpf_count_to_ns [2021-11-23 02:34:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:34:22,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:34:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_set_audclk_freq [2021-11-23 02:34:22,537 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_set_audclk_freq [2021-11-23 02:34:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:34:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure pulse_width_count_to_us [2021-11-23 02:34:22,537 INFO L138 BoogieDeclarations]: Found implementation of procedure pulse_width_count_to_us [2021-11-23 02:34:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:34:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:34:22,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:34:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:34:22,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:34:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:34:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:34:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_get_subdevdata [2021-11-23 02:34:22,539 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_get_subdevdata [2021-11-23 02:34:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_decode_vbi_line [2021-11-23 02:34:22,540 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_decode_vbi_line [2021-11-23 02:34:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure pulse_clocks_to_clock_divider [2021-11-23 02:34:22,540 INFO L138 BoogieDeclarations]: Found implementation of procedure pulse_clocks_to_clock_divider [2021-11-23 02:34:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx231xx [2021-11-23 02:34:22,541 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx231xx [2021-11-23 02:34:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2021-11-23 02:34:22,541 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2021-11-23 02:34:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_probe [2021-11-23 02:34:22,542 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_probe [2021-11-23 02:34:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-23 02:34:22,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-23 02:34:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-23 02:34:22,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-23 02:34:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure odd_parity [2021-11-23 02:34:22,547 INFO L138 BoogieDeclarations]: Found implementation of procedure odd_parity [2021-11-23 02:34:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure control_rx_enable [2021-11-23 02:34:22,548 INFO L138 BoogieDeclarations]: Found implementation of procedure control_rx_enable [2021-11-23 02:34:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-23 02:34:22,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-23 02:34:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure filter_rx_s_min_width [2021-11-23 02:34:22,555 INFO L138 BoogieDeclarations]: Found implementation of procedure filter_rx_s_min_width [2021-11-23 02:34:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_tx_shutdown [2021-11-23 02:34:22,556 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_tx_shutdown [2021-11-23 02:34:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-23 02:34:22,556 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-23 02:34:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:34:22,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:34:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_g_ctrl [2021-11-23 02:34:22,556 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_g_ctrl [2021-11-23 02:34:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_tx_s_parameters [2021-11-23 02:34:22,557 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_tx_s_parameters [2021-11-23 02:34:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:34:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:34:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:34:22,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:34:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure input_change [2021-11-23 02:34:22,558 INFO L138 BoogieDeclarations]: Found implementation of procedure input_change [2021-11-23 02:34:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_tx_g_parameters [2021-11-23 02:34:22,558 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_tx_g_parameters [2021-11-23 02:34:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_querymenu [2021-11-23 02:34:22,558 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_querymenu [2021-11-23 02:34:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:34:22,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:34:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-23 02:34:22,559 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-23 02:34:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_probe [2021-11-23 02:34:22,559 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_probe [2021-11-23 02:34:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-23 02:34:22,559 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-23 02:34:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_rx_shutdown [2021-11-23 02:34:22,560 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_rx_shutdown [2021-11-23 02:34:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:34:22,560 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:34:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure control_tx_enable [2021-11-23 02:34:22,560 INFO L138 BoogieDeclarations]: Found implementation of procedure control_tx_enable [2021-11-23 02:34:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:34:22,561 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:34:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:34:22,561 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:34:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure carrier_freq_to_clock_divider [2021-11-23 02:34:22,561 INFO L138 BoogieDeclarations]: Found implementation of procedure carrier_freq_to_clock_divider [2021-11-23 02:34:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure control_rx_demodulation_enable [2021-11-23 02:34:22,561 INFO L138 BoogieDeclarations]: Found implementation of procedure control_rx_demodulation_enable [2021-11-23 02:34:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-23 02:34:22,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-23 02:34:22,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:34:22,562 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:34:22,562 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:34:22,562 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_write [2021-11-23 02:34:22,562 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_write [2021-11-23 02:34:22,562 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2021-11-23 02:34:22,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2021-11-23 02:34:22,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:34:22,563 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_s_mbus_fmt [2021-11-23 02:34:22,563 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_s_mbus_fmt [2021-11-23 02:34:22,563 INFO L130 BoogieDeclarations]: Found specification of procedure set_volume [2021-11-23 02:34:22,563 INFO L138 BoogieDeclarations]: Found implementation of procedure set_volume [2021-11-23 02:34:22,563 INFO L130 BoogieDeclarations]: Found specification of procedure cx231xx_initialize [2021-11-23 02:34:22,564 INFO L138 BoogieDeclarations]: Found implementation of procedure cx231xx_initialize [2021-11-23 02:34:22,564 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_g_ext_ctrls [2021-11-23 02:34:22,564 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_g_ext_ctrls [2021-11-23 02:34:22,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:34:22,564 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-23 02:34:22,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-23 02:34:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 02:34:22,565 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 02:34:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 02:34:22,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 02:34:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 02:34:22,565 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 02:34:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_try_ext_ctrls [2021-11-23 02:34:22,566 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_try_ext_ctrls [2021-11-23 02:34:22,566 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata___0 [2021-11-23 02:34:22,566 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata___0 [2021-11-23 02:34:22,566 INFO L130 BoogieDeclarations]: Found specification of procedure irqenable_tx [2021-11-23 02:34:22,566 INFO L138 BoogieDeclarations]: Found implementation of procedure irqenable_tx [2021-11-23 02:34:22,566 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_queryctrl [2021-11-23 02:34:22,566 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_queryctrl [2021-11-23 02:34:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure clock_divider_to_freq [2021-11-23 02:34:22,567 INFO L138 BoogieDeclarations]: Found implementation of procedure clock_divider_to_freq [2021-11-23 02:34:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_g_std [2021-11-23 02:34:22,567 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_g_std [2021-11-23 02:34:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_rx_s_parameters [2021-11-23 02:34:22,567 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_rx_s_parameters [2021-11-23 02:34:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure to_state [2021-11-23 02:34:22,567 INFO L138 BoogieDeclarations]: Found implementation of procedure to_state [2021-11-23 02:34:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_g_register [2021-11-23 02:34:22,568 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_g_register [2021-11-23 02:34:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:34:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_s_register [2021-11-23 02:34:22,568 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_s_register [2021-11-23 02:34:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure set_input [2021-11-23 02:34:22,568 INFO L138 BoogieDeclarations]: Found implementation of procedure set_input [2021-11-23 02:34:22,569 INFO L130 BoogieDeclarations]: Found specification of procedure cx23888_std_setup [2021-11-23 02:34:22,569 INFO L138 BoogieDeclarations]: Found implementation of procedure cx23888_std_setup [2021-11-23 02:34:22,569 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2021-11-23 02:34:22,569 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2021-11-23 02:34:22,569 INFO L130 BoogieDeclarations]: Found specification of procedure irqenable_rx [2021-11-23 02:34:22,569 INFO L138 BoogieDeclarations]: Found implementation of procedure irqenable_rx [2021-11-23 02:34:22,569 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_and_or4 [2021-11-23 02:34:22,570 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_and_or4 [2021-11-23 02:34:22,570 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_read [2021-11-23 02:34:22,570 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_read [2021-11-23 02:34:22,570 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_s_sliced_fmt [2021-11-23 02:34:22,570 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_s_sliced_fmt [2021-11-23 02:34:22,570 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_master_send [2021-11-23 02:34:22,570 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_master_send [2021-11-23 02:34:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_adapter_id [2021-11-23 02:34:22,571 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_adapter_id [2021-11-23 02:34:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure clock_divider_to_carrier_freq [2021-11-23 02:34:22,571 INFO L138 BoogieDeclarations]: Found implementation of procedure clock_divider_to_carrier_freq [2021-11-23 02:34:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 02:34:22,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 02:34:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure control_rx_s_edge_detection [2021-11-23 02:34:22,572 INFO L138 BoogieDeclarations]: Found implementation of procedure control_rx_s_edge_detection [2021-11-23 02:34:22,573 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-23 02:34:22,576 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-23 02:34:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_read4 [2021-11-23 02:34:22,577 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_read4 [2021-11-23 02:34:22,577 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 02:34:22,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 02:34:22,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:34:22,577 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-23 02:34:22,577 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-23 02:34:22,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 02:34:22,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 02:34:22,579 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx23885 [2021-11-23 02:34:22,579 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx23885 [2021-11-23 02:34:22,579 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_pulse_clocks [2021-11-23 02:34:22,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_pulse_clocks [2021-11-23 02:34:22,579 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx23888 [2021-11-23 02:34:22,579 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx23888 [2021-11-23 02:34:22,579 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx23887 [2021-11-23 02:34:22,580 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx23887 [2021-11-23 02:34:23,933 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:34:23,937 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:34:26,789 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:35:39,655 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:35:44,571 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:35:44,573 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:35:44,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:35:44 BoogieIcfgContainer [2021-11-23 02:35:44,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:35:44,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:35:44,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:35:44,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:35:44,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:34:15" (1/3) ... [2021-11-23 02:35:44,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46350c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:35:44, skipping insertion in model container [2021-11-23 02:35:44,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:20" (2/3) ... [2021-11-23 02:35:44,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46350c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:35:44, skipping insertion in model container [2021-11-23 02:35:44,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:35:44" (3/3) ... [2021-11-23 02:35:44,593 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-media-i2c-cx25840-cx25840.cil.i [2021-11-23 02:35:44,598 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:35:44,598 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 02:35:44,668 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:35:44,674 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 [2021-11-23 02:35:44,675 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 02:35:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 7683 states, 4081 states have (on average 1.1163930409213427) internal successors, (4556), 4108 states have internal predecessors, (4556), 3482 states have call successors, (3482), 117 states have call predecessors, (3482), 116 states have return successors, (3479), 3467 states have call predecessors, (3479), 3479 states have call successors, (3479) [2021-11-23 02:35:44,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 02:35:44,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:44,860 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 02:35:44,861 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:35:44,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:44,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1545103771, now seen corresponding path program 1 times [2021-11-23 02:35:44,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:44,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633159517] [2021-11-23 02:35:44,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:44,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 02:35:45,745 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:45,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633159517] [2021-11-23 02:35:45,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633159517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:45,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:35:45,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:35:45,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175015477] [2021-11-23 02:35:45,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:45,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:35:45,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:45,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:35:45,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:35:45,830 INFO L87 Difference]: Start difference. First operand has 7683 states, 4081 states have (on average 1.1163930409213427) internal successors, (4556), 4108 states have internal predecessors, (4556), 3482 states have call successors, (3482), 117 states have call predecessors, (3482), 116 states have return successors, (3479), 3467 states have call predecessors, (3479), 3479 states have call successors, (3479) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 02:35:49,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:35:53,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:35:55,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:35:57,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:00,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:03,124 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:05,286 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:08,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:09,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:09,575 INFO L93 Difference]: Finished difference Result 15497 states and 23216 transitions. [2021-11-23 02:36:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:36:09,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2021-11-23 02:36:09,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:09,723 INFO L225 Difference]: With dead ends: 15497 [2021-11-23 02:36:09,723 INFO L226 Difference]: Without dead ends: 7824 [2021-11-23 02:36:09,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:36:09,816 INFO L933 BasicCegarLoop]: 11246 mSDtfsCounter, 11468 mSDsluCounter, 23294 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11488 SdHoareTripleChecker+Valid, 33879 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:09,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11488 Valid, 33879 Invalid, 998 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 989 Invalid, 8 Unknown, 0 Unchecked, 22.7s Time] [2021-11-23 02:36:09,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7824 states. [2021-11-23 02:36:18,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7824 to 7809. [2021-11-23 02:36:18,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7809 states, 4150 states have (on average 1.1151807228915662) internal successors, (4628), 4180 states have internal predecessors, (4628), 3517 states have call successors, (3517), 140 states have call predecessors, (3517), 139 states have return successors, (3514), 3500 states have call predecessors, (3514), 3514 states have call successors, (3514) [2021-11-23 02:36:18,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7809 states to 7809 states and 11659 transitions. [2021-11-23 02:36:18,571 INFO L78 Accepts]: Start accepts. Automaton has 7809 states and 11659 transitions. Word has length 35 [2021-11-23 02:36:18,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:18,572 INFO L470 AbstractCegarLoop]: Abstraction has 7809 states and 11659 transitions. [2021-11-23 02:36:18,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 02:36:18,573 INFO L276 IsEmpty]: Start isEmpty. Operand 7809 states and 11659 transitions. [2021-11-23 02:36:18,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 02:36:18,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:18,578 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:18,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:36:18,578 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)] === [2021-11-23 02:36:18,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:18,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1320348215, now seen corresponding path program 1 times [2021-11-23 02:36:18,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:18,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776973726] [2021-11-23 02:36:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:18,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 02:36:19,104 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:19,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776973726] [2021-11-23 02:36:19,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776973726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:19,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:36:19,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:36:19,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908325296] [2021-11-23 02:36:19,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:19,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:36:19,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:19,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:36:19,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:36:19,107 INFO L87 Difference]: Start difference. First operand 7809 states and 11659 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:36:22,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:27,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:29,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:31,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:34,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:36,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:39,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:40,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:40,802 INFO L93 Difference]: Finished difference Result 7864 states and 11706 transitions. [2021-11-23 02:36:40,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:36:40,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 40 [2021-11-23 02:36:40,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:40,889 INFO L225 Difference]: With dead ends: 7864 [2021-11-23 02:36:40,889 INFO L226 Difference]: Without dead ends: 7862 [2021-11-23 02:36:40,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:36:40,902 INFO L933 BasicCegarLoop]: 11239 mSDtfsCounter, 11469 mSDsluCounter, 23223 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11483 SdHoareTripleChecker+Valid, 33804 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:40,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11483 Valid, 33804 Invalid, 993 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 7 Unknown, 0 Unchecked, 21.1s Time] [2021-11-23 02:36:40,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7862 states. [2021-11-23 02:36:49,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7862 to 7851. [2021-11-23 02:36:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7851 states, 4172 states have (on average 1.1145733461169702) internal successors, (4650), 4202 states have internal predecessors, (4650), 3523 states have call successors, (3523), 154 states have call predecessors, (3523), 153 states have return successors, (3520), 3506 states have call predecessors, (3520), 3520 states have call successors, (3520) [2021-11-23 02:36:49,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7851 states to 7851 states and 11693 transitions. [2021-11-23 02:36:49,289 INFO L78 Accepts]: Start accepts. Automaton has 7851 states and 11693 transitions. Word has length 40 [2021-11-23 02:36:49,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:49,290 INFO L470 AbstractCegarLoop]: Abstraction has 7851 states and 11693 transitions. [2021-11-23 02:36:49,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:36:49,291 INFO L276 IsEmpty]: Start isEmpty. Operand 7851 states and 11693 transitions. [2021-11-23 02:36:49,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 02:36:49,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:49,301 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:49,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:36:49,302 INFO L402 AbstractCegarLoop]: === Iteration 3 === 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)] === [2021-11-23 02:36:49,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:49,303 INFO L85 PathProgramCache]: Analyzing trace with hash -586089589, now seen corresponding path program 1 times [2021-11-23 02:36:49,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:49,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641077306] [2021-11-23 02:36:49,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:49,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-23 02:36:49,770 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:49,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641077306] [2021-11-23 02:36:49,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641077306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:49,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:36:49,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:36:49,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357572518] [2021-11-23 02:36:49,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:49,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:36:49,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:49,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:36:49,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:36:49,774 INFO L87 Difference]: Start difference. First operand 7851 states and 11693 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-23 02:36:53,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:57,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:59,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:02,238 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:04,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:07,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:09,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:11,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:14,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:15,116 INFO L93 Difference]: Finished difference Result 7874 states and 11714 transitions. [2021-11-23 02:37:15,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:37:15,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 51 [2021-11-23 02:37:15,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:15,211 INFO L225 Difference]: With dead ends: 7874 [2021-11-23 02:37:15,211 INFO L226 Difference]: Without dead ends: 7872 [2021-11-23 02:37:15,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:37:15,221 INFO L933 BasicCegarLoop]: 11237 mSDtfsCounter, 11451 mSDsluCounter, 23211 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11469 SdHoareTripleChecker+Valid, 33798 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:15,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11469 Valid, 33798 Invalid, 985 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 975 Invalid, 9 Unknown, 0 Unchecked, 24.8s Time] [2021-11-23 02:37:15,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7872 states. [2021-11-23 02:37:23,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7872 to 7861. [2021-11-23 02:37:23,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7861 states, 4178 states have (on average 1.1144088080421255) internal successors, (4656), 4208 states have internal predecessors, (4656), 3524 states have call successors, (3524), 157 states have call predecessors, (3524), 156 states have return successors, (3521), 3507 states have call predecessors, (3521), 3521 states have call successors, (3521) [2021-11-23 02:37:23,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 11701 transitions. [2021-11-23 02:37:23,224 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 11701 transitions. Word has length 51 [2021-11-23 02:37:23,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:37:23,224 INFO L470 AbstractCegarLoop]: Abstraction has 7861 states and 11701 transitions. [2021-11-23 02:37:23,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-23 02:37:23,225 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 11701 transitions. [2021-11-23 02:37:23,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 02:37:23,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:23,228 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:37:23,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:37:23,228 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:37:23,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:23,229 INFO L85 PathProgramCache]: Analyzing trace with hash 28507217, now seen corresponding path program 1 times [2021-11-23 02:37:23,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:37:23,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389906092] [2021-11-23 02:37:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:23,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:37:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-23 02:37:23,588 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:37:23,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389906092] [2021-11-23 02:37:23,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389906092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:37:23,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:37:23,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:37:23,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705225782] [2021-11-23 02:37:23,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:37:23,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:37:23,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:37:23,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:37:23,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:37:23,590 INFO L87 Difference]: Start difference. First operand 7861 states and 11701 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 02:37:27,026 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 [] [2021-11-23 02:37:30,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:33,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:35,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:37,347 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:39,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:42,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:44,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:46,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:49,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:51,814 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:52,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:52,557 INFO L93 Difference]: Finished difference Result 8452 states and 12566 transitions. [2021-11-23 02:37:52,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:37:52,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 56 [2021-11-23 02:37:52,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:52,623 INFO L225 Difference]: With dead ends: 8452 [2021-11-23 02:37:52,623 INFO L226 Difference]: Without dead ends: 8450 [2021-11-23 02:37:52,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:37:52,632 INFO L933 BasicCegarLoop]: 11477 mSDtfsCounter, 3705 mSDsluCounter, 32308 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 1 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3727 SdHoareTripleChecker+Valid, 43092 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:52,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3727 Valid, 43092 Invalid, 1030 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1018 Invalid, 11 Unknown, 0 Unchecked, 28.6s Time] [2021-11-23 02:37:52,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8450 states. [2021-11-23 02:37:59,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8450 to 8436. [2021-11-23 02:37:59,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8436 states, 4510 states have (on average 1.1228381374722838) internal successors, (5064), 4540 states have internal predecessors, (5064), 3744 states have call successors, (3744), 180 states have call predecessors, (3744), 179 states have return successors, (3741), 3727 states have call predecessors, (3741), 3741 states have call successors, (3741) [2021-11-23 02:38:00,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8436 states to 8436 states and 12549 transitions. [2021-11-23 02:38:00,008 INFO L78 Accepts]: Start accepts. Automaton has 8436 states and 12549 transitions. Word has length 56 [2021-11-23 02:38:00,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:38:00,008 INFO L470 AbstractCegarLoop]: Abstraction has 8436 states and 12549 transitions. [2021-11-23 02:38:00,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 02:38:00,009 INFO L276 IsEmpty]: Start isEmpty. Operand 8436 states and 12549 transitions. [2021-11-23 02:38:00,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 02:38:00,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:38:00,011 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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] [2021-11-23 02:38:00,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:38:00,011 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)] === [2021-11-23 02:38:00,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:38:00,012 INFO L85 PathProgramCache]: Analyzing trace with hash -630924187, now seen corresponding path program 1 times [2021-11-23 02:38:00,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:38:00,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220152174] [2021-11-23 02:38:00,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:00,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:38:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:38:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-23 02:38:00,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:38:00,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220152174] [2021-11-23 02:38:00,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220152174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:38:00,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:38:00,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:38:00,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400643484] [2021-11-23 02:38:00,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:38:00,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:38:00,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:38:00,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:38:00,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:38:00,430 INFO L87 Difference]: Start difference. First operand 8436 states and 12549 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 02:38:03,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:07,640 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:38:09,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:38:12,033 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:38:14,946 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:38:17,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:38:19,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:38:21,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:38:22,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:38:22,701 INFO L93 Difference]: Finished difference Result 8456 states and 12569 transitions. [2021-11-23 02:38:22,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:38:22,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 55 [2021-11-23 02:38:22,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:38:22,744 INFO L225 Difference]: With dead ends: 8456 [2021-11-23 02:38:22,744 INFO L226 Difference]: Without dead ends: 8454 [2021-11-23 02:38:22,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:38:22,752 INFO L933 BasicCegarLoop]: 11260 mSDtfsCounter, 11450 mSDsluCounter, 23317 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11467 SdHoareTripleChecker+Valid, 33913 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:38:22,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11467 Valid, 33913 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 993 Invalid, 8 Unknown, 0 Unchecked, 21.9s Time] [2021-11-23 02:38:22,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8454 states. [2021-11-23 02:38:29,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8454 to 8440. [2021-11-23 02:38:29,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8440 states, 4513 states have (on average 1.122756481276313) internal successors, (5067), 4543 states have internal predecessors, (5067), 3744 states have call successors, (3744), 181 states have call predecessors, (3744), 180 states have return successors, (3741), 3727 states have call predecessors, (3741), 3741 states have call successors, (3741) [2021-11-23 02:38:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8440 states to 8440 states and 12552 transitions. [2021-11-23 02:38:29,702 INFO L78 Accepts]: Start accepts. Automaton has 8440 states and 12552 transitions. Word has length 55 [2021-11-23 02:38:29,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:38:29,702 INFO L470 AbstractCegarLoop]: Abstraction has 8440 states and 12552 transitions. [2021-11-23 02:38:29,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 02:38:29,703 INFO L276 IsEmpty]: Start isEmpty. Operand 8440 states and 12552 transitions. [2021-11-23 02:38:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 02:38:29,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:38:29,705 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:38:29,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:38:29,705 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)] === [2021-11-23 02:38:29,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:38:29,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1082832977, now seen corresponding path program 1 times [2021-11-23 02:38:29,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:38:29,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617803934] [2021-11-23 02:38:29,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:29,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:38:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:38:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-23 02:38:30,040 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:38:30,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617803934] [2021-11-23 02:38:30,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617803934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:38:30,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:38:30,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:38:30,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464126121] [2021-11-23 02:38:30,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:38:30,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:38:30,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:38:30,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:38:30,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:38:30,042 INFO L87 Difference]: Start difference. First operand 8440 states and 12552 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:38:33,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:37,255 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:38:39,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:38:41,679 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:38:44,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:38:46,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:38:48,923 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:38:51,931 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:52,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:38:52,636 INFO L93 Difference]: Finished difference Result 8460 states and 12572 transitions. [2021-11-23 02:38:52,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:38:52,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2021-11-23 02:38:52,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:38:52,678 INFO L225 Difference]: With dead ends: 8460 [2021-11-23 02:38:52,678 INFO L226 Difference]: Without dead ends: 8458 [2021-11-23 02:38:52,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:38:52,688 INFO L933 BasicCegarLoop]: 11477 mSDtfsCounter, 3705 mSDsluCounter, 32313 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3723 SdHoareTripleChecker+Valid, 43094 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:38:52,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3723 Valid, 43094 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1024 Invalid, 8 Unknown, 0 Unchecked, 22.2s Time] [2021-11-23 02:38:52,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8458 states. [2021-11-23 02:39:01,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8458 to 8444. [2021-11-23 02:39:01,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8444 states, 4516 states have (on average 1.1226749335695305) internal successors, (5070), 4546 states have internal predecessors, (5070), 3744 states have call successors, (3744), 182 states have call predecessors, (3744), 181 states have return successors, (3741), 3727 states have call predecessors, (3741), 3741 states have call successors, (3741) [2021-11-23 02:39:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8444 states to 8444 states and 12555 transitions. [2021-11-23 02:39:01,387 INFO L78 Accepts]: Start accepts. Automaton has 8444 states and 12555 transitions. Word has length 66 [2021-11-23 02:39:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:39:01,388 INFO L470 AbstractCegarLoop]: Abstraction has 8444 states and 12555 transitions. [2021-11-23 02:39:01,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:39:01,388 INFO L276 IsEmpty]: Start isEmpty. Operand 8444 states and 12555 transitions. [2021-11-23 02:39:01,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:39:01,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:39:01,390 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:39:01,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:39:01,391 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)] === [2021-11-23 02:39:01,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:39:01,391 INFO L85 PathProgramCache]: Analyzing trace with hash 52793995, now seen corresponding path program 1 times [2021-11-23 02:39:01,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:39:01,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173730923] [2021-11-23 02:39:01,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:01,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:39:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:39:01,709 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-23 02:39:01,710 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:39:01,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173730923] [2021-11-23 02:39:01,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173730923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:39:01,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:39:01,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:39:01,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622091785] [2021-11-23 02:39:01,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:39:01,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:39:01,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:39:01,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:39:01,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:39:01,712 INFO L87 Difference]: Start difference. First operand 8444 states and 12555 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:39:05,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:39:08,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:39:11,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:39:13,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:39:16,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:39:18,356 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:39:20,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:39:23,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:39:23,742 INFO L93 Difference]: Finished difference Result 16653 states and 24848 transitions. [2021-11-23 02:39:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:39:23,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 71 [2021-11-23 02:39:23,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:39:23,876 INFO L225 Difference]: With dead ends: 16653 [2021-11-23 02:39:23,876 INFO L226 Difference]: Without dead ends: 16649 [2021-11-23 02:39:23,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:39:23,894 INFO L933 BasicCegarLoop]: 14665 mSDtfsCounter, 11419 mSDsluCounter, 41390 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11431 SdHoareTripleChecker+Valid, 55121 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:39:23,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11431 Valid, 55121 Invalid, 1276 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1266 Invalid, 7 Unknown, 0 Unchecked, 21.3s Time] [2021-11-23 02:39:23,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16649 states. [2021-11-23 02:39:40,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16649 to 16638. [2021-11-23 02:39:41,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16638 states, 8898 states have (on average 1.1226118228815465) internal successors, (9989), 8956 states have internal predecessors, (9989), 7417 states have call successors, (7417), 324 states have call predecessors, (7417), 320 states have return successors, (7429), 7377 states have call predecessors, (7429), 7411 states have call successors, (7429) [2021-11-23 02:39:41,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16638 states to 16638 states and 24835 transitions. [2021-11-23 02:39:41,121 INFO L78 Accepts]: Start accepts. Automaton has 16638 states and 24835 transitions. Word has length 71 [2021-11-23 02:39:41,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:39:41,122 INFO L470 AbstractCegarLoop]: Abstraction has 16638 states and 24835 transitions. [2021-11-23 02:39:41,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:39:41,122 INFO L276 IsEmpty]: Start isEmpty. Operand 16638 states and 24835 transitions. [2021-11-23 02:39:41,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 02:39:41,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:39:41,126 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:39:41,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:39:41,126 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)] === [2021-11-23 02:39:41,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:39:41,128 INFO L85 PathProgramCache]: Analyzing trace with hash 878257233, now seen corresponding path program 1 times [2021-11-23 02:39:41,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:39:41,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801897857] [2021-11-23 02:39:41,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:41,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:39:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:39:41,454 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-23 02:39:41,454 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:39:41,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801897857] [2021-11-23 02:39:41,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801897857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:39:41,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:39:41,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:39:41,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138666938] [2021-11-23 02:39:41,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:39:41,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:39:41,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:39:41,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:39:41,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:39:41,456 INFO L87 Difference]: Start difference. First operand 16638 states and 24835 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:39:45,074 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 [] [2021-11-23 02:39:48,889 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:39:51,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:39:53,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:39:55,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:39:58,409 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:40:00,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:40:02,684 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:40:05,323 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:40:06,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:40:06,293 INFO L93 Difference]: Finished difference Result 16661 states and 24861 transitions. [2021-11-23 02:40:06,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:40:06,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2021-11-23 02:40:06,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:40:06,388 INFO L225 Difference]: With dead ends: 16661 [2021-11-23 02:40:06,389 INFO L226 Difference]: Without dead ends: 16528 [2021-11-23 02:40:06,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:40:06,406 INFO L933 BasicCegarLoop]: 11263 mSDtfsCounter, 11455 mSDsluCounter, 23321 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11467 SdHoareTripleChecker+Valid, 33922 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:40:06,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11467 Valid, 33922 Invalid, 996 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 986 Invalid, 9 Unknown, 0 Unchecked, 24.3s Time] [2021-11-23 02:40:06,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16528 states. [2021-11-23 02:40:22,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16528 to 16520. [2021-11-23 02:40:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16520 states, 8828 states have (on average 1.1215450838241958) internal successors, (9901), 8884 states have internal predecessors, (9901), 7376 states have call successors, (7376), 313 states have call predecessors, (7376), 313 states have return successors, (7397), 7341 states have call predecessors, (7397), 7373 states have call successors, (7397) [2021-11-23 02:40:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16520 states to 16520 states and 24674 transitions. [2021-11-23 02:40:22,287 INFO L78 Accepts]: Start accepts. Automaton has 16520 states and 24674 transitions. Word has length 76 [2021-11-23 02:40:22,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:40:22,287 INFO L470 AbstractCegarLoop]: Abstraction has 16520 states and 24674 transitions. [2021-11-23 02:40:22,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:40:22,288 INFO L276 IsEmpty]: Start isEmpty. Operand 16520 states and 24674 transitions. [2021-11-23 02:40:22,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-23 02:40:22,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:40:22,301 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:40:22,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:40:22,301 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:40:22,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:40:22,302 INFO L85 PathProgramCache]: Analyzing trace with hash -840837454, now seen corresponding path program 1 times [2021-11-23 02:40:22,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:40:22,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500812582] [2021-11-23 02:40:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:40:22,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:40:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:40:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-23 02:40:22,716 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:40:22,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500812582] [2021-11-23 02:40:22,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500812582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:40:22,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:40:22,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:40:22,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541834803] [2021-11-23 02:40:22,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:40:22,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:40:22,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:40:22,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:40:22,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:40:22,718 INFO L87 Difference]: Start difference. First operand 16520 states and 24674 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:40:26,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:40:30,083 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:40:32,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:40:34,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:40:37,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:40:39,602 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:40:41,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:40:46,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:40:47,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:40:47,189 INFO L93 Difference]: Finished difference Result 16529 states and 24682 transitions. [2021-11-23 02:40:47,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:40:47,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2021-11-23 02:40:47,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:40:47,284 INFO L225 Difference]: With dead ends: 16529 [2021-11-23 02:40:47,284 INFO L226 Difference]: Without dead ends: 16527 [2021-11-23 02:40:47,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:40:47,303 INFO L933 BasicCegarLoop]: 14623 mSDtfsCounter, 11238 mSDsluCounter, 41317 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11250 SdHoareTripleChecker+Valid, 55006 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:40:47,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11250 Valid, 55006 Invalid, 1268 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1258 Invalid, 8 Unknown, 0 Unchecked, 23.8s Time] [2021-11-23 02:40:47,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16527 states. [2021-11-23 02:41:03,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16527 to 16520. [2021-11-23 02:41:03,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16520 states, 8828 states have (on average 1.1214318078840055) internal successors, (9900), 8884 states have internal predecessors, (9900), 7376 states have call successors, (7376), 313 states have call predecessors, (7376), 313 states have return successors, (7397), 7341 states have call predecessors, (7397), 7373 states have call successors, (7397) [2021-11-23 02:41:03,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16520 states to 16520 states and 24673 transitions. [2021-11-23 02:41:03,971 INFO L78 Accepts]: Start accepts. Automaton has 16520 states and 24673 transitions. Word has length 133 [2021-11-23 02:41:03,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:03,973 INFO L470 AbstractCegarLoop]: Abstraction has 16520 states and 24673 transitions. [2021-11-23 02:41:03,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:41:03,973 INFO L276 IsEmpty]: Start isEmpty. Operand 16520 states and 24673 transitions. [2021-11-23 02:41:03,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-23 02:41:03,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:03,984 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 02:41:03,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:41:03,984 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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)] === [2021-11-23 02:41:03,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:03,985 INFO L85 PathProgramCache]: Analyzing trace with hash -403902158, now seen corresponding path program 1 times [2021-11-23 02:41:03,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:03,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579938247] [2021-11-23 02:41:03,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:03,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-11-23 02:41:04,410 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:04,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579938247] [2021-11-23 02:41:04,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579938247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:04,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:04,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:41:04,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623174719] [2021-11-23 02:41:04,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:04,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:41:04,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:04,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:41:04,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:41:04,412 INFO L87 Difference]: Start difference. First operand 16520 states and 24673 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:41:08,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:41:12,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:41:15,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:41:18,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:41:21,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:41:23,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:41:24,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:24,384 INFO L93 Difference]: Finished difference Result 16526 states and 24677 transitions. [2021-11-23 02:41:24,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:41:24,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 154 [2021-11-23 02:41:24,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:24,464 INFO L225 Difference]: With dead ends: 16526 [2021-11-23 02:41:24,465 INFO L226 Difference]: Without dead ends: 16524 [2021-11-23 02:41:24,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:41:24,482 INFO L933 BasicCegarLoop]: 11178 mSDtfsCounter, 32 mSDsluCounter, 34436 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 44683 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:24,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 44683 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1251 Invalid, 6 Unknown, 0 Unchecked, 19.4s Time] [2021-11-23 02:41:24,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16524 states. [2021-11-23 02:41:39,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16524 to 16524. [2021-11-23 02:41:39,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16524 states, 8831 states have (on average 1.1211640810780206) internal successors, (9901), 8886 states have internal predecessors, (9901), 7376 states have call successors, (7376), 315 states have call predecessors, (7376), 315 states have return successors, (7397), 7341 states have call predecessors, (7397), 7373 states have call successors, (7397) [2021-11-23 02:41:39,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16524 states to 16524 states and 24674 transitions. [2021-11-23 02:41:39,220 INFO L78 Accepts]: Start accepts. Automaton has 16524 states and 24674 transitions. Word has length 154 [2021-11-23 02:41:39,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:39,221 INFO L470 AbstractCegarLoop]: Abstraction has 16524 states and 24674 transitions. [2021-11-23 02:41:39,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:41:39,221 INFO L276 IsEmpty]: Start isEmpty. Operand 16524 states and 24674 transitions. [2021-11-23 02:41:39,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-23 02:41:39,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:39,245 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:39,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:41:39,246 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)] === [2021-11-23 02:41:39,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:39,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1673683112, now seen corresponding path program 1 times [2021-11-23 02:41:39,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:39,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977374473] [2021-11-23 02:41:39,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:39,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:39,509 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:41:39,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543347862] [2021-11-23 02:41:39,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:39,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:41:39,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:39,516 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:41:39,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:41:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:41,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 5517 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 02:41:41,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2021-11-23 02:41:43,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:41:43,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:43,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977374473] [2021-11-23 02:41:43,982 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:41:43,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543347862] [2021-11-23 02:41:43,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543347862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:43,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:43,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:41:43,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672991576] [2021-11-23 02:41:43,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:43,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:41:43,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:43,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:41:43,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:41:43,985 INFO L87 Difference]: Start difference. First operand 16524 states and 24674 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2021-11-23 02:41:47,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:41:51,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:41:53,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:41:55,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:41:59,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:42:01,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:42:02,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:02,940 INFO L93 Difference]: Finished difference Result 16526 states and 24675 transitions. [2021-11-23 02:42:02,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:42:02,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 293 [2021-11-23 02:42:02,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:03,026 INFO L225 Difference]: With dead ends: 16526 [2021-11-23 02:42:03,027 INFO L226 Difference]: Without dead ends: 16524 [2021-11-23 02:42:03,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:42:03,044 INFO L933 BasicCegarLoop]: 11202 mSDtfsCounter, 11272 mSDsluCounter, 23146 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11279 SdHoareTripleChecker+Valid, 33691 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:03,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11279 Valid, 33691 Invalid, 985 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 978 Invalid, 6 Unknown, 0 Unchecked, 18.4s Time] [2021-11-23 02:42:03,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16524 states. [2021-11-23 02:42:18,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16524 to 16524. [2021-11-23 02:42:18,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16524 states, 8831 states have (on average 1.1209376061601177) internal successors, (9899), 8885 states have internal predecessors, (9899), 7376 states have call successors, (7376), 316 states have call predecessors, (7376), 316 states have return successors, (7397), 7341 states have call predecessors, (7397), 7373 states have call successors, (7397) [2021-11-23 02:42:19,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16524 states to 16524 states and 24672 transitions. [2021-11-23 02:42:19,037 INFO L78 Accepts]: Start accepts. Automaton has 16524 states and 24672 transitions. Word has length 293 [2021-11-23 02:42:19,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:19,038 INFO L470 AbstractCegarLoop]: Abstraction has 16524 states and 24672 transitions. [2021-11-23 02:42:19,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2021-11-23 02:42:19,038 INFO L276 IsEmpty]: Start isEmpty. Operand 16524 states and 24672 transitions. [2021-11-23 02:42:19,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2021-11-23 02:42:19,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:19,109 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 9, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:19,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:42:19,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:42:19,325 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)] === [2021-11-23 02:42:19,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:19,325 INFO L85 PathProgramCache]: Analyzing trace with hash 34470085, now seen corresponding path program 1 times [2021-11-23 02:42:19,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:19,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029504066] [2021-11-23 02:42:19,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:19,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:19,590 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:42:19,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647665274] [2021-11-23 02:42:19,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:19,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:42:19,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:42:19,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:42:19,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:42:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:21,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 7316 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:42:21,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:42:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2021-11-23 02:42:23,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:42:23,845 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:23,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029504066] [2021-11-23 02:42:23,845 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:42:23,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647665274] [2021-11-23 02:42:23,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647665274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:23,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:23,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:42:23,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081629359] [2021-11-23 02:42:23,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:23,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:42:23,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:23,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:42:23,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:23,849 INFO L87 Difference]: Start difference. First operand 16524 states and 24672 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 3 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) [2021-11-23 02:42:27,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:42:30,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:42:32,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:42:34,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:42:36,970 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:42:39,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:42:41,677 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:42:44,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:42:46,753 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:42:47,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:47,544 INFO L93 Difference]: Finished difference Result 33044 states and 49357 transitions. [2021-11-23 02:42:47,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:42:47,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 3 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) Word has length 555 [2021-11-23 02:42:47,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:47,619 INFO L225 Difference]: With dead ends: 33044 [2021-11-23 02:42:47,620 INFO L226 Difference]: Without dead ends: 16536 [2021-11-23 02:42:47,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:47,732 INFO L933 BasicCegarLoop]: 11182 mSDtfsCounter, 2 mSDsluCounter, 11482 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22356 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:47,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 22356 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 623 Invalid, 9 Unknown, 0 Unchecked, 23.1s Time] [2021-11-23 02:42:47,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16536 states. [2021-11-23 02:43:04,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16536 to 16530. [2021-11-23 02:43:04,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16530 states, 8835 states have (on average 1.1208828522920204) internal successors, (9903), 8889 states have internal predecessors, (9903), 7378 states have call successors, (7378), 316 states have call predecessors, (7378), 316 states have return successors, (7399), 7343 states have call predecessors, (7399), 7375 states have call successors, (7399) [2021-11-23 02:43:04,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16530 states to 16530 states and 24680 transitions. [2021-11-23 02:43:04,438 INFO L78 Accepts]: Start accepts. Automaton has 16530 states and 24680 transitions. Word has length 555 [2021-11-23 02:43:04,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:04,439 INFO L470 AbstractCegarLoop]: Abstraction has 16530 states and 24680 transitions. [2021-11-23 02:43:04,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 3 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) [2021-11-23 02:43:04,440 INFO L276 IsEmpty]: Start isEmpty. Operand 16530 states and 24680 transitions. [2021-11-23 02:43:04,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2021-11-23 02:43:04,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:04,507 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:04,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:43:04,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-23 02:43:04,733 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)] === [2021-11-23 02:43:04,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:04,733 INFO L85 PathProgramCache]: Analyzing trace with hash 451176680, now seen corresponding path program 1 times [2021-11-23 02:43:04,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:04,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420738245] [2021-11-23 02:43:04,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:04,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:04,953 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:43:04,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226729435] [2021-11-23 02:43:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:04,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:04,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:04,955 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:43:04,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:43:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:07,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 7292 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 02:43:07,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2021-11-23 02:43:10,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:43:15,705 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2021-11-23 02:43:15,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:15,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420738245] [2021-11-23 02:43:15,706 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:43:15,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226729435] [2021-11-23 02:43:15,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226729435] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 02:43:15,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:43:15,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2021-11-23 02:43:15,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155921701] [2021-11-23 02:43:15,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:15,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:43:15,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:15,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:43:15,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:43:15,710 INFO L87 Difference]: Start difference. First operand 16530 states and 24680 transitions. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 5 states have internal predecessors, (158), 3 states have call successors, (81), 4 states have call predecessors, (81), 2 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2021-11-23 02:43:19,180 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 [] [2021-11-23 02:43:22,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:43:25,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:43:27,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:43:31,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:43:33,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:43:35,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:43:37,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:43:40,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:43:42,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:20,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:45:20,925 INFO L93 Difference]: Finished difference Result 16537 states and 24687 transitions. [2021-11-23 02:45:20,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:45:20,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 5 states have internal predecessors, (158), 3 states have call successors, (81), 4 states have call predecessors, (81), 2 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) Word has length 550 [2021-11-23 02:45:20,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:45:20,927 INFO L225 Difference]: With dead ends: 16537 [2021-11-23 02:45:20,927 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 02:45:20,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1100 GetRequests, 1092 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:45:20,987 INFO L933 BasicCegarLoop]: 8688 mSDtfsCounter, 6870 mSDsluCounter, 12484 mSDsCounter, 0 mSdLazyCounter, 23366 mSolverCounterSat, 2769 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9613 SdHoareTripleChecker+Valid, 20550 SdHoareTripleChecker+Invalid, 26144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2769 IncrementalHoareTripleChecker+Valid, 23366 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:45:20,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9613 Valid, 20550 Invalid, 26144 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2769 Valid, 23366 Invalid, 9 Unknown, 0 Unchecked, 123.7s Time] [2021-11-23 02:45:20,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 02:45:20,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 02:45:20,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:45:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 02:45:20,995 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 550 [2021-11-23 02:45:20,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:45:20,996 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 02:45:20,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 5 states have internal predecessors, (158), 3 states have call successors, (81), 4 states have call predecessors, (81), 2 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2021-11-23 02:45:20,996 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 02:45:20,997 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 02:45:20,999 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-23 02:45:20,999 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-23 02:45:21,000 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-23 02:45:21,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:45:21,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9323682c-8c4a-442b-b7d8-f163d6791603/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-23 02:45:21,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.