./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-platform-vsp1-vsp1.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e24bdf-d006-4813-90d4-164746304976/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e24bdf-d006-4813-90d4-164746304976/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e24bdf-d006-4813-90d4-164746304976/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e24bdf-d006-4813-90d4-164746304976/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-platform-vsp1-vsp1.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e24bdf-d006-4813-90d4-164746304976/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e24bdf-d006-4813-90d4-164746304976/bin/utaipan-TEXQjIfE4P --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 8ac7ef6163593244979442da2bd08044f9730d00931e1e4e35783fd5a897b362 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:07:16,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:07:16,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:07:16,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:07:16,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:07:16,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:07:16,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:07:16,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:07:16,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:07:16,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:07:16,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:07:16,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:07:16,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:07:16,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:07:16,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:07:16,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:07:16,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:07:16,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:07:16,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:07:16,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:07:16,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:07:16,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:07:16,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:07:16,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:07:16,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:07:16,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:07:16,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:07:16,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:07:16,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:07:16,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:07:16,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:07:16,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:07:16,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:07:16,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:07:16,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:07:16,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:07:16,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:07:16,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:07:16,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:07:16,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:07:16,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:07:16,258 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e24bdf-d006-4813-90d4-164746304976/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:07:16,304 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:07:16,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:07:16,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:07:16,308 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:07:16,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:07:16,315 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:07:16,315 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:07:16,315 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:07:16,315 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:07:16,316 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:07:16,317 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:07:16,317 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:07:16,317 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:07:16,317 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:07:16,317 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:07:16,318 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:07:16,318 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:07:16,318 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:07:16,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:07:16,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:07:16,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:07:16,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:07:16,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:07:16,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:07:16,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:07:16,321 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:07:16,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:07:16,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:07:16,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:07:16,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:07:16,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:07:16,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:07:16,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:07:16,325 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:07:16,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:07:16,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:07:16,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:07:16,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:07:16,326 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_08e24bdf-d006-4813-90d4-164746304976/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e24bdf-d006-4813-90d4-164746304976/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ac7ef6163593244979442da2bd08044f9730d00931e1e4e35783fd5a897b362 [2021-11-21 01:07:16,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:07:16,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:07:16,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:07:16,643 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:07:16,644 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:07:16,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e24bdf-d006-4813-90d4-164746304976/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-platform-vsp1-vsp1.cil.i [2021-11-21 01:07:16,715 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e24bdf-d006-4813-90d4-164746304976/bin/utaipan-TEXQjIfE4P/data/3aa3719ab/5e36b5cb5d794bf9a81c44131920480b/FLAG85bfcc63a [2021-11-21 01:07:17,827 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:07:17,828 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e24bdf-d006-4813-90d4-164746304976/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-platform-vsp1-vsp1.cil.i [2021-11-21 01:07:17,893 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e24bdf-d006-4813-90d4-164746304976/bin/utaipan-TEXQjIfE4P/data/3aa3719ab/5e36b5cb5d794bf9a81c44131920480b/FLAG85bfcc63a [2021-11-21 01:07:18,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e24bdf-d006-4813-90d4-164746304976/bin/utaipan-TEXQjIfE4P/data/3aa3719ab/5e36b5cb5d794bf9a81c44131920480b [2021-11-21 01:07:18,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:07:18,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:07:18,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:07:18,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:07:18,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:07:18,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:07:18" (1/1) ... [2021-11-21 01:07:18,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5afc8c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:07:18, skipping insertion in model container [2021-11-21 01:07:18,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:07:18" (1/1) ... [2021-11-21 01:07:18,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:07:18,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:07:23,560 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_08e24bdf-d006-4813-90d4-164746304976/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-platform-vsp1-vsp1.cil.i[588330,588343] [2021-11-21 01:07:23,563 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_08e24bdf-d006-4813-90d4-164746304976/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-platform-vsp1-vsp1.cil.i[588499,588512] [2021-11-21 01:07:23,563 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_08e24bdf-d006-4813-90d4-164746304976/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-platform-vsp1-vsp1.cil.i[588666,588679] [2021-11-21 01:07:23,564 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e24bdf-d006-4813-90d4-164746304976/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-platform-vsp1-vsp1.cil.i[588834,588847] [2021-11-21 01:07:23,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:07:23,680 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:07:24,302 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_08e24bdf-d006-4813-90d4-164746304976/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-platform-vsp1-vsp1.cil.i[588330,588343] [2021-11-21 01:07:24,302 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_08e24bdf-d006-4813-90d4-164746304976/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-platform-vsp1-vsp1.cil.i[588499,588512] [2021-11-21 01:07:24,303 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_08e24bdf-d006-4813-90d4-164746304976/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-platform-vsp1-vsp1.cil.i[588666,588679] [2021-11-21 01:07:24,303 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_08e24bdf-d006-4813-90d4-164746304976/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-platform-vsp1-vsp1.cil.i[588834,588847] [2021-11-21 01:07:24,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:07:24,772 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:07:24,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:07:24 WrapperNode [2021-11-21 01:07:24,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:07:24,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:07:24,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:07:24,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:07:24,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:07:24" (1/1) ... [2021-11-21 01:07:24,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:07:24" (1/1) ... [2021-11-21 01:07:25,365 INFO L137 Inliner]: procedures = 710, calls = 4743, calls flagged for inlining = 342, calls inlined = 329, statements flattened = 9439 [2021-11-21 01:07:25,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:07:25,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:07:25,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:07:25,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:07:25,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:07:24" (1/1) ... [2021-11-21 01:07:25,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:07:24" (1/1) ... [2021-11-21 01:07:25,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:07:24" (1/1) ... [2021-11-21 01:07:25,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:07:24" (1/1) ... [2021-11-21 01:07:25,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:07:24" (1/1) ... [2021-11-21 01:07:25,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:07:24" (1/1) ... [2021-11-21 01:07:25,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:07:24" (1/1) ... [2021-11-21 01:07:26,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:07:26,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:07:26,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:07:26,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:07:26,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:07:24" (1/1) ... [2021-11-21 01:07:26,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:07:26,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e24bdf-d006-4813-90d4-164746304976/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:07:26,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e24bdf-d006-4813-90d4-164746304976/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:07:26,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e24bdf-d006-4813-90d4-164746304976/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:07:26,121 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_destroy_entities [2021-11-21 01:07:26,122 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_destroy_entities [2021-11-21 01:07:26,122 INFO L130 BoogieDeclarations]: Found specification of procedure lif_s_stream [2021-11-21 01:07:26,122 INFO L138 BoogieDeclarations]: Found implementation of procedure lif_s_stream [2021-11-21 01:07:26,122 INFO L130 BoogieDeclarations]: Found specification of procedure uds_enum_mbus_code [2021-11-21 01:07:26,122 INFO L138 BoogieDeclarations]: Found implementation of procedure uds_enum_mbus_code [2021-11-21 01:07:26,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:07:26,122 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:07:26,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irqlock_of_vsp1_video [2021-11-21 01:07:26,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irqlock_of_vsp1_video [2021-11-21 01:07:26,123 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_ioctl_prepare_buf [2021-11-21 01:07:26,123 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_ioctl_prepare_buf [2021-11-21 01:07:26,123 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_ioctl_dqbuf [2021-11-21 01:07:26,123 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_ioctl_dqbuf [2021-11-21 01:07:26,123 INFO L130 BoogieDeclarations]: Found specification of procedure hsit_get_format [2021-11-21 01:07:26,123 INFO L138 BoogieDeclarations]: Found implementation of procedure hsit_get_format [2021-11-21 01:07:26,124 INFO L130 BoogieDeclarations]: Found specification of procedure sru_enum_frame_size [2021-11-21 01:07:26,124 INFO L138 BoogieDeclarations]: Found implementation of procedure sru_enum_frame_size [2021-11-21 01:07:26,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:07:26,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:07:26,124 INFO L130 BoogieDeclarations]: Found specification of procedure to_uds [2021-11-21 01:07:26,125 INFO L138 BoogieDeclarations]: Found implementation of procedure to_uds [2021-11-21 01:07:26,125 INFO L130 BoogieDeclarations]: Found specification of procedure to_vsp1_video [2021-11-21 01:07:26,125 INFO L138 BoogieDeclarations]: Found implementation of procedure to_vsp1_video [2021-11-21 01:07:26,125 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_video_buffer_prepare [2021-11-21 01:07:26,125 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_video_buffer_prepare [2021-11-21 01:07:26,125 INFO L130 BoogieDeclarations]: Found specification of procedure media_entity_remote_pad [2021-11-21 01:07:26,126 INFO L138 BoogieDeclarations]: Found implementation of procedure media_entity_remote_pad [2021-11-21 01:07:26,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:07:26,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:07:26,126 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2021-11-21 01:07:26,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2021-11-21 01:07:26,126 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_entity_init_formats [2021-11-21 01:07:26,127 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_entity_init_formats [2021-11-21 01:07:26,127 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_entity_init [2021-11-21 01:07:26,127 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_entity_init [2021-11-21 01:07:26,127 INFO L130 BoogieDeclarations]: Found specification of procedure uds_try_format [2021-11-21 01:07:26,127 INFO L138 BoogieDeclarations]: Found implementation of procedure uds_try_format [2021-11-21 01:07:26,128 INFO L130 BoogieDeclarations]: Found specification of procedure uds_enum_frame_size [2021-11-21 01:07:26,128 INFO L138 BoogieDeclarations]: Found implementation of procedure uds_enum_frame_size [2021-11-21 01:07:26,128 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:07:26,128 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:07:26,128 INFO L130 BoogieDeclarations]: Found specification of procedure to_lut [2021-11-21 01:07:26,129 INFO L138 BoogieDeclarations]: Found implementation of procedure to_lut [2021-11-21 01:07:26,130 INFO L130 BoogieDeclarations]: Found specification of procedure sru_enum_mbus_code [2021-11-21 01:07:26,130 INFO L138 BoogieDeclarations]: Found implementation of procedure sru_enum_mbus_code [2021-11-21 01:07:26,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_51 [2021-11-21 01:07:26,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_51 [2021-11-21 01:07:26,130 INFO L130 BoogieDeclarations]: Found specification of procedure lut_get_format [2021-11-21 01:07:26,130 INFO L138 BoogieDeclarations]: Found implementation of procedure lut_get_format [2021-11-21 01:07:26,130 INFO L130 BoogieDeclarations]: Found specification of procedure sru_get_format [2021-11-21 01:07:26,131 INFO L138 BoogieDeclarations]: Found implementation of procedure sru_get_format [2021-11-21 01:07:26,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_53 [2021-11-21 01:07:26,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_53 [2021-11-21 01:07:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_read [2021-11-21 01:07:26,132 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_read [2021-11-21 01:07:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_irq_handler [2021-11-21 01:07:26,132 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_irq_handler [2021-11-21 01:07:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_rwpf_enum_frame_size [2021-11-21 01:07:26,132 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_rwpf_enum_frame_size [2021-11-21 01:07:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_video_frame_end [2021-11-21 01:07:26,133 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_video_frame_end [2021-11-21 01:07:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:07:26,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:07:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 01:07:26,133 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 01:07:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_dma_contig_cleanup_ctx [2021-11-21 01:07:26,133 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_dma_contig_cleanup_ctx [2021-11-21 01:07:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure wpf_s_stream [2021-11-21 01:07:26,134 INFO L138 BoogieDeclarations]: Found implementation of procedure wpf_s_stream [2021-11-21 01:07:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:07:26,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:07:26,135 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_rwpf_get_selection [2021-11-21 01:07:26,135 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_rwpf_get_selection [2021-11-21 01:07:26,135 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:07:26,135 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:07:26,135 INFO L130 BoogieDeclarations]: Found specification of procedure uds_s_stream [2021-11-21 01:07:26,136 INFO L138 BoogieDeclarations]: Found implementation of procedure uds_s_stream [2021-11-21 01:07:26,136 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2021-11-21 01:07:26,136 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2021-11-21 01:07:26,136 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_uds_write [2021-11-21 01:07:26,136 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_uds_write [2021-11-21 01:07:26,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:07:26,137 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_pipeline_cleanup [2021-11-21 01:07:26,137 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_pipeline_cleanup [2021-11-21 01:07:26,137 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-21 01:07:26,138 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-21 01:07:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure clk_unprepare [2021-11-21 01:07:26,138 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_unprepare [2021-11-21 01:07:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure sru_s_stream [2021-11-21 01:07:26,139 INFO L138 BoogieDeclarations]: Found implementation of procedure sru_s_stream [2021-11-21 01:07:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 01:07:26,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 01:07:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_rwpf_get_format [2021-11-21 01:07:26,139 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_rwpf_get_format [2021-11-21 01:07:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-21 01:07:26,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-21 01:07:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_ioctl_reqbufs [2021-11-21 01:07:26,139 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_ioctl_reqbufs [2021-11-21 01:07:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_is_locked [2021-11-21 01:07:26,140 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_is_locked [2021-11-21 01:07:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:07:26,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:07:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure to_rwpf [2021-11-21 01:07:26,141 INFO L138 BoogieDeclarations]: Found implementation of procedure to_rwpf [2021-11-21 01:07:26,142 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_get_format_info [2021-11-21 01:07:26,144 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_get_format_info [2021-11-21 01:07:26,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:07:26,144 INFO L130 BoogieDeclarations]: Found specification of procedure hsit_enum_mbus_code [2021-11-21 01:07:26,144 INFO L138 BoogieDeclarations]: Found implementation of procedure hsit_enum_mbus_code [2021-11-21 01:07:26,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 01:07:26,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 01:07:26,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:07:26,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:07:26,146 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-21 01:07:26,151 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-21 01:07:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_pipeline_ready [2021-11-21 01:07:26,152 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_pipeline_ready [2021-11-21 01:07:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure sru_s_ctrl [2021-11-21 01:07:26,152 INFO L138 BoogieDeclarations]: Found implementation of procedure sru_s_ctrl [2021-11-21 01:07:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_rwpf_set_selection [2021-11-21 01:07:26,152 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_rwpf_set_selection [2021-11-21 01:07:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_hsit_write [2021-11-21 01:07:26,152 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_hsit_write [2021-11-21 01:07:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_video_set_format [2021-11-21 01:07:26,153 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_video_set_format [2021-11-21 01:07:26,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:07:26,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:07:26,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:07:26,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:07:26,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:07:26,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:07:26,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:07:26,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-21 01:07:26,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-21 01:07:26,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_5 [2021-11-21 01:07:26,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_5 [2021-11-21 01:07:26,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-21 01:07:26,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-21 01:07:26,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_7 [2021-11-21 01:07:26,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_7 [2021-11-21 01:07:26,154 INFO L130 BoogieDeclarations]: Found specification of procedure lif_enum_frame_size [2021-11-21 01:07:26,154 INFO L138 BoogieDeclarations]: Found implementation of procedure lif_enum_frame_size [2021-11-21 01:07:26,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_6 [2021-11-21 01:07:26,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_6 [2021-11-21 01:07:26,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:07:26,155 INFO L130 BoogieDeclarations]: Found specification of procedure sru_set_format [2021-11-21 01:07:26,155 INFO L138 BoogieDeclarations]: Found implementation of procedure sru_set_format [2021-11-21 01:07:26,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:07:26,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:07:26,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:07:26,156 INFO L130 BoogieDeclarations]: Found specification of procedure to_hsit [2021-11-21 01:07:26,156 INFO L138 BoogieDeclarations]: Found implementation of procedure to_hsit [2021-11-21 01:07:26,156 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_write [2021-11-21 01:07:26,156 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_write [2021-11-21 01:07:26,156 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:07:26,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:07:26,156 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_video_start_streaming [2021-11-21 01:07:26,157 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_video_start_streaming [2021-11-21 01:07:26,157 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:07:26,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:07:26,157 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata___1 [2021-11-21 01:07:26,157 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata___1 [2021-11-21 01:07:26,157 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_video_get_format [2021-11-21 01:07:26,157 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_video_get_format [2021-11-21 01:07:26,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irqlock_of_vsp1_pipeline [2021-11-21 01:07:26,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irqlock_of_vsp1_pipeline [2021-11-21 01:07:26,158 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_video_open [2021-11-21 01:07:26,158 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_video_open [2021-11-21 01:07:26,158 INFO L130 BoogieDeclarations]: Found specification of procedure to_vsp1_video_buffer [2021-11-21 01:07:26,158 INFO L138 BoogieDeclarations]: Found implementation of procedure to_vsp1_video_buffer [2021-11-21 01:07:26,158 INFO L130 BoogieDeclarations]: Found specification of procedure to_vsp1_pipeline [2021-11-21 01:07:26,158 INFO L138 BoogieDeclarations]: Found implementation of procedure to_vsp1_pipeline [2021-11-21 01:07:26,158 INFO L130 BoogieDeclarations]: Found specification of procedure rpf_vdev_queue [2021-11-21 01:07:26,158 INFO L138 BoogieDeclarations]: Found implementation of procedure rpf_vdev_queue [2021-11-21 01:07:26,158 INFO L130 BoogieDeclarations]: Found specification of procedure media_entity_type [2021-11-21 01:07:26,159 INFO L138 BoogieDeclarations]: Found implementation of procedure media_entity_type [2021-11-21 01:07:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2021-11-21 01:07:26,159 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2021-11-21 01:07:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 01:07:26,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 01:07:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:07:26,160 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:07:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-21 01:07:26,161 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-21 01:07:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure sru_try_format [2021-11-21 01:07:26,161 INFO L138 BoogieDeclarations]: Found implementation of procedure sru_try_format [2021-11-21 01:07:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:07:26,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:07:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_pm_suspend [2021-11-21 01:07:26,226 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_pm_suspend [2021-11-21 01:07:26,226 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 01:07:26,226 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 01:07:26,226 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_clocks_enable [2021-11-21 01:07:26,226 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_clocks_enable [2021-11-21 01:07:26,226 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_video_try_format [2021-11-21 01:07:26,226 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_video_try_format [2021-11-21 01:07:26,226 INFO L130 BoogieDeclarations]: Found specification of procedure to_sru [2021-11-21 01:07:26,227 INFO L138 BoogieDeclarations]: Found implementation of procedure to_sru [2021-11-21 01:07:26,227 INFO L130 BoogieDeclarations]: Found specification of procedure uds_output_size [2021-11-21 01:07:26,227 INFO L138 BoogieDeclarations]: Found implementation of procedure uds_output_size [2021-11-21 01:07:26,227 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_ops_wait_finish [2021-11-21 01:07:26,227 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_ops_wait_finish [2021-11-21 01:07:26,227 INFO L130 BoogieDeclarations]: Found specification of procedure lut_s_stream [2021-11-21 01:07:26,227 INFO L138 BoogieDeclarations]: Found implementation of procedure lut_s_stream [2021-11-21 01:07:26,227 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_video_cleanup [2021-11-21 01:07:26,227 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_video_cleanup [2021-11-21 01:07:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:07:26,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:07:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_ioctl_create_bufs [2021-11-21 01:07:26,228 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_ioctl_create_bufs [2021-11-21 01:07:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:07:26,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:07:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure uds_passband_width [2021-11-21 01:07:26,228 INFO L138 BoogieDeclarations]: Found implementation of procedure uds_passband_width [2021-11-21 01:07:26,228 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_clocks_disable [2021-11-21 01:07:26,228 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_clocks_disable [2021-11-21 01:07:26,229 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_lif_write [2021-11-21 01:07:26,229 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_lif_write [2021-11-21 01:07:26,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 01:07:26,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 01:07:26,229 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_entity_get_pad_format [2021-11-21 01:07:26,229 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_entity_get_pad_format [2021-11-21 01:07:26,229 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_init [2021-11-21 01:07:26,229 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_init [2021-11-21 01:07:26,229 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 01:07:26,230 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 01:07:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:07:26,230 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:07:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_sru_write [2021-11-21 01:07:26,230 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_sru_write [2021-11-21 01:07:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure hsit_set_format [2021-11-21 01:07:26,230 INFO L138 BoogieDeclarations]: Found implementation of procedure hsit_set_format [2021-11-21 01:07:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_rpf_write [2021-11-21 01:07:26,230 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_rpf_write [2021-11-21 01:07:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure __vsp1_video_try_format [2021-11-21 01:07:26,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __vsp1_video_try_format [2021-11-21 01:07:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-21 01:07:26,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-21 01:07:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure media_entity_create_link [2021-11-21 01:07:26,231 INFO L138 BoogieDeclarations]: Found implementation of procedure media_entity_create_link [2021-11-21 01:07:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-21 01:07:26,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-21 01:07:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_video_release [2021-11-21 01:07:26,232 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_video_release [2021-11-21 01:07:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2021-11-21 01:07:26,232 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2021-11-21 01:07:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-21 01:07:26,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-21 01:07:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_remove [2021-11-21 01:07:26,232 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_remove [2021-11-21 01:07:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_pm_resume [2021-11-21 01:07:26,232 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_pm_resume [2021-11-21 01:07:26,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:07:26,233 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:07:26,233 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:07:26,233 INFO L130 BoogieDeclarations]: Found specification of procedure uds_output_limits [2021-11-21 01:07:26,233 INFO L138 BoogieDeclarations]: Found implementation of procedure uds_output_limits [2021-11-21 01:07:26,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:07:26,233 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_pipeline_run [2021-11-21 01:07:26,233 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_pipeline_run [2021-11-21 01:07:26,233 INFO L130 BoogieDeclarations]: Found specification of procedure uds_compute_ratio [2021-11-21 01:07:26,234 INFO L138 BoogieDeclarations]: Found implementation of procedure uds_compute_ratio [2021-11-21 01:07:26,234 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_video_stop_streaming [2021-11-21 01:07:26,234 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_video_stop_streaming [2021-11-21 01:07:26,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:07:26,234 INFO L130 BoogieDeclarations]: Found specification of procedure uds_set_format [2021-11-21 01:07:26,234 INFO L138 BoogieDeclarations]: Found implementation of procedure uds_set_format [2021-11-21 01:07:26,234 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_probe [2021-11-21 01:07:26,234 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_probe [2021-11-21 01:07:26,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-21 01:07:26,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-21 01:07:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_hsit_create [2021-11-21 01:07:26,235 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_hsit_create [2021-11-21 01:07:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-21 01:07:26,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-21 01:07:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-21 01:07:26,235 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-21 01:07:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure devm_clk_get [2021-11-21 01:07:26,235 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_clk_get [2021-11-21 01:07:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:07:26,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:07:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure clk_disable_unprepare [2021-11-21 01:07:26,236 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_disable_unprepare [2021-11-21 01:07:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_ioctl_querybuf [2021-11-21 01:07:26,236 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_ioctl_querybuf [2021-11-21 01:07:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 01:07:26,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 01:07:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure to_vsp1_entity [2021-11-21 01:07:26,236 INFO L138 BoogieDeclarations]: Found implementation of procedure to_vsp1_entity [2021-11-21 01:07:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure to_lif [2021-11-21 01:07:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure to_lif [2021-11-21 01:07:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_rwpf_set_format [2021-11-21 01:07:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_rwpf_set_format [2021-11-21 01:07:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_get_try_format___3 [2021-11-21 01:07:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_get_try_format___3 [2021-11-21 01:07:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_link_validate [2021-11-21 01:07:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_link_validate [2021-11-21 01:07:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_get_try_format___2 [2021-11-21 01:07:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_get_try_format___2 [2021-11-21 01:07:26,254 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_ops_wait_prepare [2021-11-21 01:07:26,254 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_ops_wait_prepare [2021-11-21 01:07:26,254 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release_empty [2021-11-21 01:07:26,254 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_rwpf_enum_mbus_code [2021-11-21 01:07:26,254 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_rwpf_enum_mbus_code [2021-11-21 01:07:26,254 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-21 01:07:26,255 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-21 01:07:26,255 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_get_try_format___5 [2021-11-21 01:07:26,255 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_get_try_format___5 [2021-11-21 01:07:26,255 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_get_try_format___4 [2021-11-21 01:07:26,255 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_get_try_format___4 [2021-11-21 01:07:26,255 INFO L130 BoogieDeclarations]: Found specification of procedure lif_set_format [2021-11-21 01:07:26,256 INFO L138 BoogieDeclarations]: Found implementation of procedure lif_set_format [2021-11-21 01:07:26,256 INFO L130 BoogieDeclarations]: Found specification of procedure lut_enum_mbus_code [2021-11-21 01:07:26,256 INFO L138 BoogieDeclarations]: Found implementation of procedure lut_enum_mbus_code [2021-11-21 01:07:26,256 INFO L130 BoogieDeclarations]: Found specification of procedure lif_get_format [2021-11-21 01:07:26,256 INFO L138 BoogieDeclarations]: Found implementation of procedure lif_get_format [2021-11-21 01:07:26,256 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_rwpf_get_crop [2021-11-21 01:07:26,256 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_rwpf_get_crop [2021-11-21 01:07:26,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:07:26,257 INFO L130 BoogieDeclarations]: Found specification of procedure clk_prepare_enable [2021-11-21 01:07:26,257 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_prepare_enable [2021-11-21 01:07:26,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:07:26,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:07:26,257 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_video_querycap [2021-11-21 01:07:26,258 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_video_querycap [2021-11-21 01:07:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure media_entity_init [2021-11-21 01:07:26,258 INFO L138 BoogieDeclarations]: Found implementation of procedure media_entity_init [2021-11-21 01:07:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_video_buffer_queue [2021-11-21 01:07:26,258 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_video_buffer_queue [2021-11-21 01:07:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure vsp1_video_init [2021-11-21 01:07:26,258 INFO L138 BoogieDeclarations]: Found implementation of procedure vsp1_video_init [2021-11-21 01:07:26,259 INFO L130 BoogieDeclarations]: Found specification of procedure rpf_s_stream [2021-11-21 01:07:26,259 INFO L138 BoogieDeclarations]: Found implementation of procedure rpf_s_stream [2021-11-21 01:07:26,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_vsp1_platform_driver_exit_28_2 [2021-11-21 01:07:26,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_vsp1_platform_driver_exit_28_2 [2021-11-21 01:07:26,259 INFO L130 BoogieDeclarations]: Found specification of procedure media_entity_pipeline_stop [2021-11-21 01:07:26,259 INFO L138 BoogieDeclarations]: Found implementation of procedure media_entity_pipeline_stop [2021-11-21 01:07:26,260 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_set_subdevdata [2021-11-21 01:07:26,260 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_set_subdevdata [2021-11-21 01:07:26,260 INFO L130 BoogieDeclarations]: Found specification of procedure lut_set_format [2021-11-21 01:07:26,260 INFO L138 BoogieDeclarations]: Found implementation of procedure lut_set_format [2021-11-21 01:07:26,260 INFO L130 BoogieDeclarations]: Found specification of procedure hsit_enum_frame_size [2021-11-21 01:07:26,260 INFO L138 BoogieDeclarations]: Found implementation of procedure hsit_enum_frame_size [2021-11-21 01:07:26,260 INFO L130 BoogieDeclarations]: Found specification of procedure lut_enum_frame_size [2021-11-21 01:07:26,261 INFO L138 BoogieDeclarations]: Found implementation of procedure lut_enum_frame_size [2021-11-21 01:07:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_get_drv_priv [2021-11-21 01:07:26,261 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_get_drv_priv [2021-11-21 01:07:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure hsit_s_stream [2021-11-21 01:07:26,261 INFO L138 BoogieDeclarations]: Found implementation of procedure hsit_s_stream [2021-11-21 01:07:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure wpf_vdev_queue [2021-11-21 01:07:26,261 INFO L138 BoogieDeclarations]: Found implementation of procedure wpf_vdev_queue [2021-11-21 01:07:26,262 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-21 01:07:26,262 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-21 01:07:26,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:07:26,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:07:26,262 INFO L130 BoogieDeclarations]: Found specification of procedure uds_get_format [2021-11-21 01:07:26,262 INFO L138 BoogieDeclarations]: Found implementation of procedure uds_get_format [2021-11-21 01:07:26,262 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-21 01:07:26,263 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-21 01:07:26,263 INFO L130 BoogieDeclarations]: Found specification of procedure media_entity_cleanup [2021-11-21 01:07:26,263 INFO L138 BoogieDeclarations]: Found implementation of procedure media_entity_cleanup [2021-11-21 01:07:26,263 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_ioctl_qbuf [2021-11-21 01:07:26,263 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_ioctl_qbuf [2021-11-21 01:07:26,263 INFO L130 BoogieDeclarations]: Found specification of procedure lif_enum_mbus_code [2021-11-21 01:07:26,264 INFO L138 BoogieDeclarations]: Found implementation of procedure lif_enum_mbus_code [2021-11-21 01:07:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:07:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-21 01:07:26,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-21 01:07:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:07:26,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:07:27,937 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:07:27,941 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:07:34,135 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:09:01,025 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:09:01,199 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:09:03,640 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:09:03,640 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:09:03,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:09:03 BoogieIcfgContainer [2021-11-21 01:09:03,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:09:03,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:09:03,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:09:03,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:09:03,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:07:18" (1/3) ... [2021-11-21 01:09:03,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4f4313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:09:03, skipping insertion in model container [2021-11-21 01:09:03,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:07:24" (2/3) ... [2021-11-21 01:09:03,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4f4313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:09:03, skipping insertion in model container [2021-11-21 01:09:03,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:09:03" (3/3) ... [2021-11-21 01:09:03,656 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-platform-vsp1-vsp1.cil.i [2021-11-21 01:09:03,662 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:09:03,662 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 01:09:03,726 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:09:03,733 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 [2021-11-21 01:09:03,733 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 01:09:03,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 2840 states, 1759 states have (on average 1.3342808413871519) internal successors, (2347), 1782 states have internal predecessors, (2347), 900 states have call successors, (900), 179 states have call predecessors, (900), 178 states have return successors, (887), 883 states have call predecessors, (887), 887 states have call successors, (887) [2021-11-21 01:09:04,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1125 [2021-11-21 01:09:04,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:09:04,055 INFO L514 BasicCegarLoop]: trace histogram [111, 110, 110, 110, 110, 110, 110, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:09:04,056 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)] === [2021-11-21 01:09:04,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:09:04,065 INFO L85 PathProgramCache]: Analyzing trace with hash 416839345, now seen corresponding path program 1 times [2021-11-21 01:09:04,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:09:04,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402617656] [2021-11-21 01:09:04,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:09:04,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:09:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:09:05,946 INFO L134 CoverageAnalysis]: Checked inductivity of 48183 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48183 trivial. 0 not checked. [2021-11-21 01:09:05,946 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:09:05,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402617656] [2021-11-21 01:09:05,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402617656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:09:05,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:09:05,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:09:05,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974610761] [2021-11-21 01:09:05,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:09:05,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:09:05,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:09:05,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:09:05,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:09:06,000 INFO L87 Difference]: Start difference. First operand has 2840 states, 1759 states have (on average 1.3342808413871519) internal successors, (2347), 1782 states have internal predecessors, (2347), 900 states have call successors, (900), 179 states have call predecessors, (900), 178 states have return successors, (887), 883 states have call predecessors, (887), 887 states have call successors, (887) Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (117), 2 states have call predecessors, (117), 1 states have return successors, (115), 3 states have call predecessors, (115), 3 states have call successors, (115) [2021-11-21 01:09:08,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:09:12,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:09:14,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:09:16,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:09:19,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:09:21,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:09:24,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:09:27,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:09:29,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:09:31,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-21 01:09:36,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-21 01:09:40,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:09:42,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:09:43,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:09:46,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:09:48,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:09:50,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:09:50,244 INFO L93 Difference]: Finished difference Result 7950 states and 11696 transitions. [2021-11-21 01:09:50,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:09:50,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (117), 2 states have call predecessors, (117), 1 states have return successors, (115), 3 states have call predecessors, (115), 3 states have call successors, (115) Word has length 1124 [2021-11-21 01:09:50,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:09:50,338 INFO L225 Difference]: With dead ends: 7950 [2021-11-21 01:09:50,338 INFO L226 Difference]: Without dead ends: 5313 [2021-11-21 01:09:50,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:09:50,371 INFO L933 BasicCegarLoop]: 4275 mSDtfsCounter, 3639 mSDsluCounter, 4026 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 22 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3649 SdHoareTripleChecker+Valid, 7766 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:09:50,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3649 Valid, 7766 Invalid, 1211 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 1180 Invalid, 9 Unknown, 0 Unchecked, 43.6s Time] [2021-11-21 01:09:50,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5313 states. [2021-11-21 01:09:50,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5313 to 5306. [2021-11-21 01:09:50,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5306 states, 3336 states have (on average 1.3369304556354915) internal successors, (4460), 3381 states have internal predecessors, (4460), 1616 states have call successors, (1616), 352 states have call predecessors, (1616), 351 states have return successors, (1620), 1602 states have call predecessors, (1620), 1612 states have call successors, (1620) [2021-11-21 01:09:50,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5306 states to 5306 states and 7696 transitions. [2021-11-21 01:09:50,888 INFO L78 Accepts]: Start accepts. Automaton has 5306 states and 7696 transitions. Word has length 1124 [2021-11-21 01:09:50,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:09:50,897 INFO L470 AbstractCegarLoop]: Abstraction has 5306 states and 7696 transitions. [2021-11-21 01:09:50,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (117), 2 states have call predecessors, (117), 1 states have return successors, (115), 3 states have call predecessors, (115), 3 states have call successors, (115) [2021-11-21 01:09:50,899 INFO L276 IsEmpty]: Start isEmpty. Operand 5306 states and 7696 transitions. [2021-11-21 01:09:51,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1142 [2021-11-21 01:09:51,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:09:51,060 INFO L514 BasicCegarLoop]: trace histogram [111, 110, 110, 110, 110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:09:51,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:09:51,061 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:09:51,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:09:51,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1082322997, now seen corresponding path program 1 times [2021-11-21 01:09:51,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:09:51,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588094325] [2021-11-21 01:09:51,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:09:51,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:09:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:09:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 48180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48180 trivial. 0 not checked. [2021-11-21 01:09:52,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:09:52,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588094325] [2021-11-21 01:09:52,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588094325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:09:52,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:09:52,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:09:52,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179666721] [2021-11-21 01:09:52,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:09:52,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:09:52,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:09:52,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:09:52,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:09:52,216 INFO L87 Difference]: Start difference. First operand 5306 states and 7696 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2021-11-21 01:09:57,396 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:09:59,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:10:01,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:10:03,405 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:10:06,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:10:08,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:10:10,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:10:13,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:10:16,089 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:10:18,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:10:25,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:10:26,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:10:28,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:10:31,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:10:31,664 INFO L93 Difference]: Finished difference Result 12906 states and 18686 transitions. [2021-11-21 01:10:31,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:10:31,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) Word has length 1141 [2021-11-21 01:10:31,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:10:31,744 INFO L225 Difference]: With dead ends: 12906 [2021-11-21 01:10:31,744 INFO L226 Difference]: Without dead ends: 7821 [2021-11-21 01:10:31,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:10:31,778 INFO L933 BasicCegarLoop]: 4276 mSDtfsCounter, 3625 mSDsluCounter, 4036 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 12 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3635 SdHoareTripleChecker+Valid, 7773 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:10:31,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3635 Valid, 7773 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1157 Invalid, 7 Unknown, 0 Unchecked, 39.0s Time] [2021-11-21 01:10:31,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7821 states. [2021-11-21 01:10:32,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7821 to 7789. [2021-11-21 01:10:32,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7789 states, 4908 states have (on average 1.33679706601467) internal successors, (6561), 4978 states have internal predecessors, (6561), 2343 states have call successors, (2343), 536 states have call predecessors, (2343), 535 states have return successors, (2357), 2319 states have call predecessors, (2357), 2339 states have call successors, (2357) [2021-11-21 01:10:32,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7789 states to 7789 states and 11261 transitions. [2021-11-21 01:10:32,309 INFO L78 Accepts]: Start accepts. Automaton has 7789 states and 11261 transitions. Word has length 1141 [2021-11-21 01:10:32,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:10:32,313 INFO L470 AbstractCegarLoop]: Abstraction has 7789 states and 11261 transitions. [2021-11-21 01:10:32,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2021-11-21 01:10:32,315 INFO L276 IsEmpty]: Start isEmpty. Operand 7789 states and 11261 transitions. [2021-11-21 01:10:32,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1142 [2021-11-21 01:10:32,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:10:32,339 INFO L514 BasicCegarLoop]: trace histogram [111, 110, 110, 110, 110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:10:32,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:10:32,340 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:10:32,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:10:32,341 INFO L85 PathProgramCache]: Analyzing trace with hash 387300646, now seen corresponding path program 1 times [2021-11-21 01:10:32,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:10:32,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036807905] [2021-11-21 01:10:32,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:10:32,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:10:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:10:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 48180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48180 trivial. 0 not checked. [2021-11-21 01:10:33,380 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:10:33,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036807905] [2021-11-21 01:10:33,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036807905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:10:33,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:10:33,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:10:33,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168303745] [2021-11-21 01:10:33,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:10:33,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:10:33,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:10:33,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:10:33,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:10:33,384 INFO L87 Difference]: Start difference. First operand 7789 states and 11261 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2021-11-21 01:10:37,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:10:41,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:10:43,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:10:45,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:10:49,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:10:53,415 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:10:55,439 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:10:59,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:11:02,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:11:04,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:11:06,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:11:09,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:11:09,443 INFO L93 Difference]: Finished difference Result 22388 states and 32358 transitions. [2021-11-21 01:11:09,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:11:09,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) Word has length 1141 [2021-11-21 01:11:09,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:11:09,573 INFO L225 Difference]: With dead ends: 22388 [2021-11-21 01:11:09,573 INFO L226 Difference]: Without dead ends: 14820 [2021-11-21 01:11:09,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:11:09,621 INFO L933 BasicCegarLoop]: 4758 mSDtfsCounter, 3526 mSDsluCounter, 3995 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 29 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3537 SdHoareTripleChecker+Valid, 8228 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:11:09,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3537 Valid, 8228 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1269 Invalid, 7 Unknown, 0 Unchecked, 35.6s Time] [2021-11-21 01:11:09,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14820 states. [2021-11-21 01:11:10,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14820 to 14791. [2021-11-21 01:11:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14791 states, 9342 states have (on average 1.3340826375508457) internal successors, (12463), 9477 states have internal predecessors, (12463), 4399 states have call successors, (4399), 1048 states have call predecessors, (4399), 1047 states have return successors, (4448), 4349 states have call predecessors, (4448), 4395 states have call successors, (4448) [2021-11-21 01:11:10,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14791 states to 14791 states and 21310 transitions. [2021-11-21 01:11:10,406 INFO L78 Accepts]: Start accepts. Automaton has 14791 states and 21310 transitions. Word has length 1141 [2021-11-21 01:11:10,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:11:10,409 INFO L470 AbstractCegarLoop]: Abstraction has 14791 states and 21310 transitions. [2021-11-21 01:11:10,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2021-11-21 01:11:10,410 INFO L276 IsEmpty]: Start isEmpty. Operand 14791 states and 21310 transitions. [2021-11-21 01:11:10,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1146 [2021-11-21 01:11:10,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:11:10,431 INFO L514 BasicCegarLoop]: trace histogram [111, 110, 110, 110, 110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:11:10,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:11:10,432 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:11:10,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:11:10,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1529755748, now seen corresponding path program 1 times [2021-11-21 01:11:10,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:11:10,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49472687] [2021-11-21 01:11:10,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:11:10,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:11:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:11:11,264 INFO L134 CoverageAnalysis]: Checked inductivity of 48180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48180 trivial. 0 not checked. [2021-11-21 01:11:11,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:11:11,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49472687] [2021-11-21 01:11:11,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49472687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:11:11,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:11:11,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:11:11,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653292808] [2021-11-21 01:11:11,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:11:11,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:11:11,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:11:11,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:11:11,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:11:11,269 INFO L87 Difference]: Start difference. First operand 14791 states and 21310 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) [2021-11-21 01:11:15,598 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:11:17,525 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:11:19,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:11:21,611 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:11:24,303 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:11:27,880 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:11:30,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:11:32,817 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:11:34,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:11:34,524 INFO L93 Difference]: Finished difference Result 29357 states and 42253 transitions. [2021-11-21 01:11:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:11:34,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) Word has length 1145 [2021-11-21 01:11:34,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:11:34,613 INFO L225 Difference]: With dead ends: 29357 [2021-11-21 01:11:34,613 INFO L226 Difference]: Without dead ends: 14787 [2021-11-21 01:11:34,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:11:34,677 INFO L933 BasicCegarLoop]: 3524 mSDtfsCounter, 3709 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3718 SdHoareTripleChecker+Valid, 3904 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:11:34,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3718 Valid, 3904 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 581 Invalid, 5 Unknown, 0 Unchecked, 22.8s Time] [2021-11-21 01:11:34,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14787 states. [2021-11-21 01:11:35,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14787 to 14787. [2021-11-21 01:11:35,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14787 states, 9348 states have (on average 1.3325845100556268) internal successors, (12457), 9491 states have internal predecessors, (12457), 4368 states have call successors, (4368), 1061 states have call predecessors, (4368), 1068 states have return successors, (4431), 4318 states have call predecessors, (4431), 4364 states have call successors, (4431) [2021-11-21 01:11:35,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14787 states to 14787 states and 21256 transitions. [2021-11-21 01:11:35,570 INFO L78 Accepts]: Start accepts. Automaton has 14787 states and 21256 transitions. Word has length 1145 [2021-11-21 01:11:35,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:11:35,571 INFO L470 AbstractCegarLoop]: Abstraction has 14787 states and 21256 transitions. [2021-11-21 01:11:35,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) [2021-11-21 01:11:35,572 INFO L276 IsEmpty]: Start isEmpty. Operand 14787 states and 21256 transitions. [2021-11-21 01:11:35,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1147 [2021-11-21 01:11:35,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:11:35,592 INFO L514 BasicCegarLoop]: trace histogram [111, 110, 110, 110, 110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:11:35,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:11:35,592 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:11:35,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:11:35,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1044266746, now seen corresponding path program 1 times [2021-11-21 01:11:35,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:11:35,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176065944] [2021-11-21 01:11:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:11:35,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:11:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:11:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 48180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48180 trivial. 0 not checked. [2021-11-21 01:11:36,568 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:11:36,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176065944] [2021-11-21 01:11:36,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176065944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:11:36,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:11:36,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:11:36,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665846588] [2021-11-21 01:11:36,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:11:36,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:11:36,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:11:36,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:11:36,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:11:36,572 INFO L87 Difference]: Start difference. First operand 14787 states and 21256 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) [2021-11-21 01:11:38,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:11:41,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:11:43,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:11:45,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:11:47,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:11:50,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:11:53,150 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:11:56,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:11:58,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:12:00,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-21 01:12:01,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:01,926 INFO L93 Difference]: Finished difference Result 28869 states and 41456 transitions. [2021-11-21 01:12:01,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:12:01,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) Word has length 1146 [2021-11-21 01:12:01,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:02,006 INFO L225 Difference]: With dead ends: 28869 [2021-11-21 01:12:02,006 INFO L226 Difference]: Without dead ends: 14321 [2021-11-21 01:12:02,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:12:02,057 INFO L933 BasicCegarLoop]: 3406 mSDtfsCounter, 3588 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3598 SdHoareTripleChecker+Valid, 3768 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:12:02,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3598 Valid, 3768 Invalid, 572 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 565 Invalid, 5 Unknown, 0 Unchecked, 24.8s Time] [2021-11-21 01:12:02,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14321 states. [2021-11-21 01:12:02,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14321 to 14321. [2021-11-21 01:12:02,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14321 states, 9081 states have (on average 1.33201189296333) internal successors, (12096), 9207 states have internal predecessors, (12096), 4186 states have call successors, (4186), 1043 states have call predecessors, (4186), 1051 states have return successors, (4250), 4136 states have call predecessors, (4250), 4182 states have call successors, (4250) [2021-11-21 01:12:02,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14321 states to 14321 states and 20532 transitions. [2021-11-21 01:12:02,918 INFO L78 Accepts]: Start accepts. Automaton has 14321 states and 20532 transitions. Word has length 1146 [2021-11-21 01:12:02,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:02,919 INFO L470 AbstractCegarLoop]: Abstraction has 14321 states and 20532 transitions. [2021-11-21 01:12:02,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (117), 3 states have call predecessors, (117), 3 states have call successors, (117) [2021-11-21 01:12:02,920 INFO L276 IsEmpty]: Start isEmpty. Operand 14321 states and 20532 transitions. [2021-11-21 01:12:02,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2021-11-21 01:12:02,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:02,943 INFO L514 BasicCegarLoop]: trace histogram [111, 110, 110, 110, 110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:12:02,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:12:02,944 INFO L402 AbstractCegarLoop]: === Iteration 6 === 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)] === [2021-11-21 01:12:02,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:02,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2133925853, now seen corresponding path program 1 times [2021-11-21 01:12:02,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:12:02,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357332035] [2021-11-21 01:12:02,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:02,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:12:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:03,723 INFO L134 CoverageAnalysis]: Checked inductivity of 48180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48180 trivial. 0 not checked. [2021-11-21 01:12:03,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:12:03,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357332035] [2021-11-21 01:12:03,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357332035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:12:03,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:12:03,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:12:03,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792527924] [2021-11-21 01:12:03,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:12:03,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:12:03,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:12:03,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:12:03,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:12:03,728 INFO L87 Difference]: Start difference. First operand 14321 states and 20532 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2021-11-21 01:12:06,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:12:10,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:12:12,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:12:14,638 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:12:17,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:12:20,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:12:23,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:12:25,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:12:27,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:12:29,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:12:34,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:12:37,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:12:39,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:12:41,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-21 01:12:43,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:43,507 INFO L93 Difference]: Finished difference Result 36860 states and 52891 transitions. [2021-11-21 01:12:43,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:12:43,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) Word has length 1157 [2021-11-21 01:12:43,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:43,630 INFO L225 Difference]: With dead ends: 36860 [2021-11-21 01:12:43,631 INFO L226 Difference]: Without dead ends: 22778 [2021-11-21 01:12:43,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:12:43,679 INFO L933 BasicCegarLoop]: 4302 mSDtfsCounter, 3448 mSDsluCounter, 3897 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 7 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3461 SdHoareTripleChecker+Valid, 7670 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:12:43,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3461 Valid, 7670 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1126 Invalid, 9 Unknown, 0 Unchecked, 39.1s Time] [2021-11-21 01:12:43,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22778 states. [2021-11-21 01:12:44,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22778 to 22738. [2021-11-21 01:12:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22738 states, 14455 states have (on average 1.3349014181943963) internal successors, (19296), 14662 states have internal predecessors, (19296), 6619 states have call successors, (6619), 1657 states have call predecessors, (6619), 1661 states have return successors, (6719), 6523 states have call predecessors, (6719), 6615 states have call successors, (6719) [2021-11-21 01:12:45,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22738 states to 22738 states and 32634 transitions. [2021-11-21 01:12:45,063 INFO L78 Accepts]: Start accepts. Automaton has 22738 states and 32634 transitions. Word has length 1157 [2021-11-21 01:12:45,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:45,065 INFO L470 AbstractCegarLoop]: Abstraction has 22738 states and 32634 transitions. [2021-11-21 01:12:45,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2021-11-21 01:12:45,065 INFO L276 IsEmpty]: Start isEmpty. Operand 22738 states and 32634 transitions. [2021-11-21 01:12:45,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1161 [2021-11-21 01:12:45,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:45,094 INFO L514 BasicCegarLoop]: trace histogram [112, 110, 110, 110, 110, 110, 110, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:12:45,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:12:45,094 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:12:45,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:45,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2042920991, now seen corresponding path program 1 times [2021-11-21 01:12:45,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:12:45,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288919407] [2021-11-21 01:12:45,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:45,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:12:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:45,874 INFO L134 CoverageAnalysis]: Checked inductivity of 48408 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 48402 trivial. 0 not checked. [2021-11-21 01:12:45,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:12:45,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288919407] [2021-11-21 01:12:45,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288919407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:12:45,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:12:45,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:12:45,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575852125] [2021-11-21 01:12:45,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:12:45,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:12:45,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:12:45,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:12:45,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:12:45,879 INFO L87 Difference]: Start difference. First operand 22738 states and 32634 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2021-11-21 01:12:48,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:12:52,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:12:54,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:12:56,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:12:57,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:13:00,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:13:05,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:13:07,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:13:19,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:13:22,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:13:22,455 INFO L93 Difference]: Finished difference Result 59594 states and 85570 transitions. [2021-11-21 01:13:22,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:13:22,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) Word has length 1160 [2021-11-21 01:13:22,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:13:22,628 INFO L225 Difference]: With dead ends: 59594 [2021-11-21 01:13:22,628 INFO L226 Difference]: Without dead ends: 37095 [2021-11-21 01:13:22,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:13:22,712 INFO L933 BasicCegarLoop]: 5170 mSDtfsCounter, 3500 mSDsluCounter, 3894 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 12 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 8534 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:13:22,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3511 Valid, 8534 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1354 Invalid, 7 Unknown, 0 Unchecked, 35.3s Time] [2021-11-21 01:13:22,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37095 states. [2021-11-21 01:13:24,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37095 to 37053. [2021-11-21 01:13:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37053 states, 23638 states have (on average 1.337126660461968) internal successors, (31607), 23983 states have internal predecessors, (31607), 10681 states have call successors, (10681), 2741 states have call predecessors, (10681), 2731 states have return successors, (10850), 10499 states have call predecessors, (10850), 10677 states have call successors, (10850) [2021-11-21 01:13:24,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37053 states to 37053 states and 53138 transitions. [2021-11-21 01:13:24,594 INFO L78 Accepts]: Start accepts. Automaton has 37053 states and 53138 transitions. Word has length 1160 [2021-11-21 01:13:24,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:13:24,596 INFO L470 AbstractCegarLoop]: Abstraction has 37053 states and 53138 transitions. [2021-11-21 01:13:24,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2021-11-21 01:13:24,596 INFO L276 IsEmpty]: Start isEmpty. Operand 37053 states and 53138 transitions. [2021-11-21 01:13:24,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1183 [2021-11-21 01:13:24,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:13:24,624 INFO L514 BasicCegarLoop]: trace histogram [114, 110, 110, 110, 110, 110, 110, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:13:24,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:13:24,624 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)] === [2021-11-21 01:13:24,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:13:24,626 INFO L85 PathProgramCache]: Analyzing trace with hash -630310506, now seen corresponding path program 1 times [2021-11-21 01:13:24,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:13:24,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737067972] [2021-11-21 01:13:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:24,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:13:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:13:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 48887 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48887 trivial. 0 not checked. [2021-11-21 01:13:26,991 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:13:26,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737067972] [2021-11-21 01:13:26,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737067972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:13:26,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:13:26,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:13:26,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556430164] [2021-11-21 01:13:26,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:13:26,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:13:26,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:13:26,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:13:26,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:13:26,996 INFO L87 Difference]: Start difference. First operand 37053 states and 53138 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (123), 3 states have call predecessors, (123), 1 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) [2021-11-21 01:13:30,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:13:37,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:13:39,798 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:13:41,846 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:13:43,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:13:45,850 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:13:49,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:13:54,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:13:57,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:13:59,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:01,123 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:03,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:08,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:14:11,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:11,108 INFO L93 Difference]: Finished difference Result 37069 states and 53152 transitions. [2021-11-21 01:14:11,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:14:11,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (123), 3 states have call predecessors, (123), 1 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) Word has length 1182 [2021-11-21 01:14:11,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:11,266 INFO L225 Difference]: With dead ends: 37069 [2021-11-21 01:14:11,266 INFO L226 Difference]: Without dead ends: 37067 [2021-11-21 01:14:11,282 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 [2021-11-21 01:14:11,283 INFO L933 BasicCegarLoop]: 3397 mSDtfsCounter, 3649 mSDsluCounter, 7940 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3665 SdHoareTripleChecker+Valid, 10228 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:11,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3665 Valid, 10228 Invalid, 1679 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1672 Invalid, 6 Unknown, 0 Unchecked, 42.8s Time] [2021-11-21 01:14:11,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37067 states. [2021-11-21 01:14:13,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37067 to 37065. [2021-11-21 01:14:13,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37065 states, 23645 states have (on average 1.3370268555720026) internal successors, (31614), 23991 states have internal predecessors, (31614), 10682 states have call successors, (10682), 2744 states have call predecessors, (10682), 2735 states have return successors, (10852), 10500 states have call predecessors, (10852), 10678 states have call successors, (10852) [2021-11-21 01:14:13,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37065 states to 37065 states and 53148 transitions. [2021-11-21 01:14:13,261 INFO L78 Accepts]: Start accepts. Automaton has 37065 states and 53148 transitions. Word has length 1182 [2021-11-21 01:14:13,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:14:13,262 INFO L470 AbstractCegarLoop]: Abstraction has 37065 states and 53148 transitions. [2021-11-21 01:14:13,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (123), 3 states have call predecessors, (123), 1 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) [2021-11-21 01:14:13,263 INFO L276 IsEmpty]: Start isEmpty. Operand 37065 states and 53148 transitions. [2021-11-21 01:14:13,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1188 [2021-11-21 01:14:13,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:14:13,607 INFO L514 BasicCegarLoop]: trace histogram [114, 110, 110, 110, 110, 110, 110, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:14:13,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:14:13,608 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:14:13,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:14:13,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1957005350, now seen corresponding path program 1 times [2021-11-21 01:14:13,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:14:13,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997641368] [2021-11-21 01:14:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:13,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:14:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:14:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 48889 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 48887 trivial. 0 not checked. [2021-11-21 01:14:15,218 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:14:15,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997641368] [2021-11-21 01:14:15,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997641368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:14:15,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:14:15,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:14:15,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611040674] [2021-11-21 01:14:15,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:14:15,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:14:15,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:14:15,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:14:15,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:14:15,223 INFO L87 Difference]: Start difference. First operand 37065 states and 53148 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (124), 3 states have call predecessors, (124), 1 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2021-11-21 01:14:18,726 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:20,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:27,590 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:29,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:31,673 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:33,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:37,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:39,801 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:41,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:43,445 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:46,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:47,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:49,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:51,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:53,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:14:59,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:59,066 INFO L93 Difference]: Finished difference Result 37073 states and 53155 transitions. [2021-11-21 01:14:59,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:14:59,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (124), 3 states have call predecessors, (124), 1 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) Word has length 1187 [2021-11-21 01:14:59,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:59,298 INFO L225 Difference]: With dead ends: 37073 [2021-11-21 01:14:59,298 INFO L226 Difference]: Without dead ends: 37071 [2021-11-21 01:14:59,309 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 [2021-11-21 01:14:59,310 INFO L933 BasicCegarLoop]: 3397 mSDtfsCounter, 3649 mSDsluCounter, 7920 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3664 SdHoareTripleChecker+Valid, 10213 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:59,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3664 Valid, 10213 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1666 Invalid, 6 Unknown, 0 Unchecked, 42.7s Time] [2021-11-21 01:14:59,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37071 states. [2021-11-21 01:15:00,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37071 to 37069. [2021-11-21 01:15:00,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37069 states, 23648 states have (on average 1.336984100135318) internal successors, (31617), 23994 states have internal predecessors, (31617), 10682 states have call successors, (10682), 2745 states have call predecessors, (10682), 2736 states have return successors, (10852), 10500 states have call predecessors, (10852), 10678 states have call successors, (10852) [2021-11-21 01:15:01,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37069 states to 37069 states and 53151 transitions. [2021-11-21 01:15:01,008 INFO L78 Accepts]: Start accepts. Automaton has 37069 states and 53151 transitions. Word has length 1187 [2021-11-21 01:15:01,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:15:01,009 INFO L470 AbstractCegarLoop]: Abstraction has 37069 states and 53151 transitions. [2021-11-21 01:15:01,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (124), 3 states have call predecessors, (124), 1 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2021-11-21 01:15:01,009 INFO L276 IsEmpty]: Start isEmpty. Operand 37069 states and 53151 transitions. [2021-11-21 01:15:01,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1193 [2021-11-21 01:15:01,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:15:01,040 INFO L514 BasicCegarLoop]: trace histogram [114, 110, 110, 110, 110, 110, 110, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:15:01,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:15:01,040 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:15:01,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:15:01,041 INFO L85 PathProgramCache]: Analyzing trace with hash -829711402, now seen corresponding path program 1 times [2021-11-21 01:15:01,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:15:01,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656366681] [2021-11-21 01:15:01,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:15:01,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:15:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:15:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 48895 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 48891 trivial. 0 not checked. [2021-11-21 01:15:02,681 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:15:02,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656366681] [2021-11-21 01:15:02,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656366681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:15:02,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:15:02,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:15:02,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850727184] [2021-11-21 01:15:02,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:15:02,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:15:02,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:15:02,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:15:02,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:15:02,685 INFO L87 Difference]: Start difference. First operand 37069 states and 53151 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (125), 3 states have call predecessors, (125), 1 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2021-11-21 01:15:07,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:15:13,813 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:15:15,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:15:17,278 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:15:19,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:15:21,368 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:15:23,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:15:28,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:15:30,282 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:15:31,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:15:32,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:15:34,585 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:15:39,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:15:42,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:15:44,958 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:15:47,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:15:49,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:15:54,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:15:54,639 INFO L93 Difference]: Finished difference Result 37670 states and 53838 transitions. [2021-11-21 01:15:54,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:15:54,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (125), 3 states have call predecessors, (125), 1 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) Word has length 1192 [2021-11-21 01:15:54,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:15:54,762 INFO L225 Difference]: With dead ends: 37670 [2021-11-21 01:15:54,762 INFO L226 Difference]: Without dead ends: 37668 [2021-11-21 01:15:54,777 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 [2021-11-21 01:15:54,778 INFO L933 BasicCegarLoop]: 3399 mSDtfsCounter, 3602 mSDsluCounter, 8001 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3619 SdHoareTripleChecker+Valid, 10292 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:15:54,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3619 Valid, 10292 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1669 Invalid, 7 Unknown, 0 Unchecked, 50.6s Time] [2021-11-21 01:15:54,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37668 states. [2021-11-21 01:15:56,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37668 to 37633. [2021-11-21 01:15:56,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37633 states, 24009 states have (on average 1.3348744220917157) internal successors, (32049), 24356 states have internal predecessors, (32049), 10782 states have call successors, (10782), 2847 states have call predecessors, (10782), 2839 states have return successors, (10954), 10600 states have call predecessors, (10954), 10778 states have call successors, (10954) [2021-11-21 01:15:56,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37633 states to 37633 states and 53785 transitions. [2021-11-21 01:15:56,558 INFO L78 Accepts]: Start accepts. Automaton has 37633 states and 53785 transitions. Word has length 1192 [2021-11-21 01:15:56,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:15:56,559 INFO L470 AbstractCegarLoop]: Abstraction has 37633 states and 53785 transitions. [2021-11-21 01:15:56,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (125), 3 states have call predecessors, (125), 1 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2021-11-21 01:15:56,560 INFO L276 IsEmpty]: Start isEmpty. Operand 37633 states and 53785 transitions. [2021-11-21 01:15:56,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1198 [2021-11-21 01:15:56,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:15:56,787 INFO L514 BasicCegarLoop]: trace histogram [114, 110, 110, 110, 110, 110, 110, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:15:56,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:15:56,798 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:15:56,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:15:56,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1236970778, now seen corresponding path program 1 times [2021-11-21 01:15:56,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:15:56,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566478470] [2021-11-21 01:15:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:15:56,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:15:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:15:59,288 INFO L134 CoverageAnalysis]: Checked inductivity of 48905 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 48899 trivial. 0 not checked. [2021-11-21 01:15:59,288 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:15:59,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566478470] [2021-11-21 01:15:59,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566478470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:15:59,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:15:59,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:15:59,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18073248] [2021-11-21 01:15:59,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:15:59,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:15:59,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:15:59,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:15:59,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:15:59,292 INFO L87 Difference]: Start difference. First operand 37633 states and 53785 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (126), 3 states have call predecessors, (126), 1 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) [2021-11-21 01:16:04,563 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:10,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:12,772 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:14,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:17,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:19,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:21,962 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:24,129 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:16:27,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:28,138 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:29,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:32,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:34,539 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:35,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:37,295 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:39,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:41,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:47,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-21 01:16:49,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:49,359 INFO L93 Difference]: Finished difference Result 37744 states and 53854 transitions. [2021-11-21 01:16:49,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:16:49,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (126), 3 states have call predecessors, (126), 1 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) Word has length 1197 [2021-11-21 01:16:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:49,522 INFO L225 Difference]: With dead ends: 37744 [2021-11-21 01:16:49,522 INFO L226 Difference]: Without dead ends: 37742 [2021-11-21 01:16:49,539 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 [2021-11-21 01:16:49,540 INFO L933 BasicCegarLoop]: 3402 mSDtfsCounter, 3622 mSDsluCounter, 7967 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3639 SdHoareTripleChecker+Valid, 10256 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:49,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3639 Valid, 10256 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1677 Invalid, 7 Unknown, 0 Unchecked, 48.6s Time] [2021-11-21 01:16:49,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37742 states. [2021-11-21 01:16:51,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37742 to 37735. [2021-11-21 01:16:51,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37735 states, 24068 states have (on average 1.334053515040718) internal successors, (32108), 24415 states have internal predecessors, (32108), 10782 states have call successors, (10782), 2890 states have call predecessors, (10782), 2882 states have return successors, (10954), 10600 states have call predecessors, (10954), 10778 states have call successors, (10954) [2021-11-21 01:16:51,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37735 states to 37735 states and 53844 transitions. [2021-11-21 01:16:51,390 INFO L78 Accepts]: Start accepts. Automaton has 37735 states and 53844 transitions. Word has length 1197 [2021-11-21 01:16:51,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:51,392 INFO L470 AbstractCegarLoop]: Abstraction has 37735 states and 53844 transitions. [2021-11-21 01:16:51,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (126), 3 states have call predecessors, (126), 1 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) [2021-11-21 01:16:51,392 INFO L276 IsEmpty]: Start isEmpty. Operand 37735 states and 53844 transitions. [2021-11-21 01:16:51,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1203 [2021-11-21 01:16:51,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:51,425 INFO L514 BasicCegarLoop]: trace histogram [114, 110, 110, 110, 110, 110, 110, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:16:51,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:16:51,426 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)] === [2021-11-21 01:16:51,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:51,427 INFO L85 PathProgramCache]: Analyzing trace with hash -361439722, now seen corresponding path program 1 times [2021-11-21 01:16:51,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:16:51,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19485553] [2021-11-21 01:16:51,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:51,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:16:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:52,533 INFO L134 CoverageAnalysis]: Checked inductivity of 48919 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48911 trivial. 0 not checked. [2021-11-21 01:16:52,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:16:52,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19485553] [2021-11-21 01:16:52,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19485553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:52,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:52,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:16:52,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127782353] [2021-11-21 01:16:52,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:52,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:16:52,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:16:52,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:16:52,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:16:52,537 INFO L87 Difference]: Start difference. First operand 37735 states and 53844 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (127), 3 states have call predecessors, (127), 1 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2021-11-21 01:16:57,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:03,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:04,711 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:07,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:09,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:11,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:13,072 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:18,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:21,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:22,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:24,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:25,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:27,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:29,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:31,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:37,709 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:17:39,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:39,806 INFO L93 Difference]: Finished difference Result 37855 states and 53949 transitions. [2021-11-21 01:17:39,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:17:39,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (127), 3 states have call predecessors, (127), 1 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) Word has length 1202 [2021-11-21 01:17:39,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:39,934 INFO L225 Difference]: With dead ends: 37855 [2021-11-21 01:17:39,935 INFO L226 Difference]: Without dead ends: 37853 [2021-11-21 01:17:39,952 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 [2021-11-21 01:17:39,953 INFO L933 BasicCegarLoop]: 3398 mSDtfsCounter, 3630 mSDsluCounter, 7948 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3642 SdHoareTripleChecker+Valid, 10239 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:39,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3642 Valid, 10239 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1669 Invalid, 6 Unknown, 0 Unchecked, 45.8s Time] [2021-11-21 01:17:39,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37853 states. [2021-11-21 01:17:41,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37853 to 37823. [2021-11-21 01:17:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37823 states, 24113 states have (on average 1.333430099946087) internal successors, (32153), 24460 states have internal predecessors, (32153), 10796 states have call successors, (10796), 2919 states have call predecessors, (10796), 2911 states have return successors, (10968), 10614 states have call predecessors, (10968), 10792 states have call successors, (10968) [2021-11-21 01:17:41,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37823 states to 37823 states and 53917 transitions. [2021-11-21 01:17:41,882 INFO L78 Accepts]: Start accepts. Automaton has 37823 states and 53917 transitions. Word has length 1202 [2021-11-21 01:17:41,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:41,884 INFO L470 AbstractCegarLoop]: Abstraction has 37823 states and 53917 transitions. [2021-11-21 01:17:41,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (127), 3 states have call predecessors, (127), 1 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2021-11-21 01:17:41,884 INFO L276 IsEmpty]: Start isEmpty. Operand 37823 states and 53917 transitions. [2021-11-21 01:17:41,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1207 [2021-11-21 01:17:41,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:41,916 INFO L514 BasicCegarLoop]: trace histogram [114, 110, 110, 110, 110, 110, 110, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:41,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:17:41,917 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)] === [2021-11-21 01:17:41,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:41,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1914963661, now seen corresponding path program 1 times [2021-11-21 01:17:41,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:17:41,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623954067] [2021-11-21 01:17:41,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:41,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:17:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 48936 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 48926 trivial. 0 not checked. [2021-11-21 01:17:43,312 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:17:43,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623954067] [2021-11-21 01:17:43,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623954067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:43,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:43,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:17:43,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027604630] [2021-11-21 01:17:43,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:43,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:17:43,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:17:43,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:17:43,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:17:43,316 INFO L87 Difference]: Start difference. First operand 37823 states and 53917 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (128), 3 states have call predecessors, (128), 1 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) [2021-11-21 01:17:46,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:54,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:56,883 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:17:59,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:01,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:03,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:07,877 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:18:09,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:12,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:13,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:15,303 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:16,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:23,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:25,874 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:31,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:18:31,671 INFO L93 Difference]: Finished difference Result 37831 states and 53924 transitions. [2021-11-21 01:18:31,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:18:31,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (128), 3 states have call predecessors, (128), 1 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) Word has length 1206 [2021-11-21 01:18:31,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:18:31,795 INFO L225 Difference]: With dead ends: 37831 [2021-11-21 01:18:31,795 INFO L226 Difference]: Without dead ends: 37829 [2021-11-21 01:18:31,814 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 [2021-11-21 01:18:31,815 INFO L933 BasicCegarLoop]: 3397 mSDtfsCounter, 3651 mSDsluCounter, 7922 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3661 SdHoareTripleChecker+Valid, 10213 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:31,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3661 Valid, 10213 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1667 Invalid, 7 Unknown, 0 Unchecked, 46.8s Time] [2021-11-21 01:18:31,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37829 states. [2021-11-21 01:18:33,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37829 to 37827. [2021-11-21 01:18:33,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37827 states, 24116 states have (on average 1.3333886216619673) internal successors, (32156), 24463 states have internal predecessors, (32156), 10796 states have call successors, (10796), 2920 states have call predecessors, (10796), 2912 states have return successors, (10968), 10614 states have call predecessors, (10968), 10792 states have call successors, (10968) [2021-11-21 01:18:33,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37827 states to 37827 states and 53920 transitions. [2021-11-21 01:18:33,737 INFO L78 Accepts]: Start accepts. Automaton has 37827 states and 53920 transitions. Word has length 1206 [2021-11-21 01:18:33,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:18:33,738 INFO L470 AbstractCegarLoop]: Abstraction has 37827 states and 53920 transitions. [2021-11-21 01:18:33,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (128), 3 states have call predecessors, (128), 1 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) [2021-11-21 01:18:33,739 INFO L276 IsEmpty]: Start isEmpty. Operand 37827 states and 53920 transitions. [2021-11-21 01:18:33,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1213 [2021-11-21 01:18:33,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:33,765 INFO L514 BasicCegarLoop]: trace histogram [114, 110, 110, 110, 110, 110, 110, 7, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:33,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 01:18:33,765 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:18:33,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:33,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1221722198, now seen corresponding path program 1 times [2021-11-21 01:18:33,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:18:33,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458818328] [2021-11-21 01:18:33,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:33,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:18:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 48959 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 48947 trivial. 0 not checked. [2021-11-21 01:18:34,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:18:34,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458818328] [2021-11-21 01:18:34,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458818328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:18:34,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:18:34,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:18:34,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491285827] [2021-11-21 01:18:34,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:18:34,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:18:34,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:18:34,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:18:34,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:18:34,954 INFO L87 Difference]: Start difference. First operand 37827 states and 53920 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (129), 3 states have call predecessors, (129), 1 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) [2021-11-21 01:18:38,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:39,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:40,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:45,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:47,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:48,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:50,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:52,973 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:55,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:59,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:19:04,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:05,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:06,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:08,931 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:10,397 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:11,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:14,563 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:16,597 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:18,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:24,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:19:24,495 INFO L93 Difference]: Finished difference Result 37838 states and 53932 transitions. [2021-11-21 01:19:24,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:19:24,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (129), 3 states have call predecessors, (129), 1 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) Word has length 1212 [2021-11-21 01:19:24,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:19:24,618 INFO L225 Difference]: With dead ends: 37838 [2021-11-21 01:19:24,618 INFO L226 Difference]: Without dead ends: 37836 [2021-11-21 01:19:24,723 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 [2021-11-21 01:19:24,724 INFO L933 BasicCegarLoop]: 3397 mSDtfsCounter, 3650 mSDsluCounter, 7922 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3662 SdHoareTripleChecker+Valid, 10213 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:19:24,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3662 Valid, 10213 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1668 Invalid, 6 Unknown, 0 Unchecked, 47.9s Time] [2021-11-21 01:19:24,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37836 states. [2021-11-21 01:19:26,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37836 to 37831. [2021-11-21 01:19:26,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37831 states, 24119 states have (on average 1.333347153696256) internal successors, (32159), 24466 states have internal predecessors, (32159), 10796 states have call successors, (10796), 2921 states have call predecessors, (10796), 2913 states have return successors, (10968), 10614 states have call predecessors, (10968), 10792 states have call successors, (10968) [2021-11-21 01:19:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37831 states to 37831 states and 53923 transitions. [2021-11-21 01:19:26,617 INFO L78 Accepts]: Start accepts. Automaton has 37831 states and 53923 transitions. Word has length 1212 [2021-11-21 01:19:26,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:19:26,618 INFO L470 AbstractCegarLoop]: Abstraction has 37831 states and 53923 transitions. [2021-11-21 01:19:26,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (129), 3 states have call predecessors, (129), 1 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) [2021-11-21 01:19:26,619 INFO L276 IsEmpty]: Start isEmpty. Operand 37831 states and 53923 transitions. [2021-11-21 01:19:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1229 [2021-11-21 01:19:26,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:19:26,643 INFO L514 BasicCegarLoop]: trace histogram [114, 110, 110, 110, 110, 110, 110, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:19:26,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 01:19:26,643 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:19:26,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:19:26,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1074896204, now seen corresponding path program 1 times [2021-11-21 01:19:26,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:19:26,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980299605] [2021-11-21 01:19:26,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:26,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:19:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 48992 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 48978 trivial. 0 not checked. [2021-11-21 01:19:27,981 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:19:27,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980299605] [2021-11-21 01:19:27,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980299605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:19:27,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:19:27,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:19:27,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766158918] [2021-11-21 01:19:27,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:19:27,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:19:27,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:19:27,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:19:27,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:19:27,984 INFO L87 Difference]: Start difference. First operand 37831 states and 53923 transitions. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (128), 3 states have call predecessors, (128), 1 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) [2021-11-21 01:19:33,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:39,218 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-21 01:19:40,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:44,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:46,267 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:48,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:51,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:53,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:19:55,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:57,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:58,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:20:00,107 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:20:03,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:20:05,115 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:20:06,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:20:08,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:20:10,070 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:20:12,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:20:14,214 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:20:19,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:20:19,966 INFO L93 Difference]: Finished difference Result 37840 states and 53933 transitions. [2021-11-21 01:20:19,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:20:19,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (128), 3 states have call predecessors, (128), 1 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) Word has length 1228 [2021-11-21 01:20:19,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:20:20,084 INFO L225 Difference]: With dead ends: 37840 [2021-11-21 01:20:20,084 INFO L226 Difference]: Without dead ends: 37836 [2021-11-21 01:20:20,096 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 [2021-11-21 01:20:20,097 INFO L933 BasicCegarLoop]: 3392 mSDtfsCounter, 3655 mSDsluCounter, 7889 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3667 SdHoareTripleChecker+Valid, 10181 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:20:20,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3667 Valid, 10181 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1660 Invalid, 7 Unknown, 0 Unchecked, 50.3s Time] [2021-11-21 01:20:20,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37836 states. [2021-11-21 01:20:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37836 to 37833. [2021-11-21 01:20:21,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37833 states, 24121 states have (on average 1.3332780564653206) internal successors, (32160), 24467 states have internal predecessors, (32160), 10796 states have call successors, (10796), 2922 states have call predecessors, (10796), 2913 states have return successors, (10968), 10614 states have call predecessors, (10968), 10792 states have call successors, (10968) [2021-11-21 01:20:22,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37833 states to 37833 states and 53924 transitions. [2021-11-21 01:20:22,086 INFO L78 Accepts]: Start accepts. Automaton has 37833 states and 53924 transitions. Word has length 1228 [2021-11-21 01:20:22,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:20:22,087 INFO L470 AbstractCegarLoop]: Abstraction has 37833 states and 53924 transitions. [2021-11-21 01:20:22,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (128), 3 states have call predecessors, (128), 1 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) [2021-11-21 01:20:22,087 INFO L276 IsEmpty]: Start isEmpty. Operand 37833 states and 53924 transitions. [2021-11-21 01:20:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1223 [2021-11-21 01:20:22,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:20:22,113 INFO L514 BasicCegarLoop]: trace histogram [114, 110, 110, 110, 110, 110, 110, 9, 8, 8, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:20:22,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 01:20:22,113 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:20:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:20:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash -766836074, now seen corresponding path program 1 times [2021-11-21 01:20:22,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:20:22,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851668183] [2021-11-21 01:20:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:20:22,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:20:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:20:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 49015 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 48999 trivial. 0 not checked. [2021-11-21 01:20:23,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:20:23,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851668183] [2021-11-21 01:20:23,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851668183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:20:23,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:20:23,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:20:23,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10809417] [2021-11-21 01:20:23,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:20:23,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:20:23,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:20:23,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:20:23,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:20:23,248 INFO L87 Difference]: Start difference. First operand 37833 states and 53924 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (131), 3 states have call predecessors, (131), 1 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2021-11-21 01:20:27,846 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []