./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.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_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/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_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/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_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/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 6a79b35c65887feb0e3310d99b98c096a3638844b86132f83b5aa5c0d07bcad8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:29:52,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:29:52,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:29:52,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:29:52,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:29:52,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:29:52,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:29:52,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:29:52,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:29:52,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:29:52,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:29:52,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:29:52,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:29:52,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:29:52,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:29:52,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:29:52,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:29:52,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:29:52,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:29:52,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:29:52,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:29:52,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:29:52,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:29:52,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:29:52,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:29:52,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:29:52,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:29:52,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:29:52,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:29:52,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:29:52,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:29:52,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:29:52,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:29:52,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:29:52,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:29:52,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:29:52,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:29:52,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:29:52,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:29:52,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:29:52,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:29:52,218 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:29:52,263 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:29:52,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:29:52,264 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:29:52,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:29:52,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:29:52,268 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:29:52,268 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:29:52,268 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:29:52,269 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:29:52,269 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:29:52,269 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:29:52,270 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:29:52,270 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:29:52,270 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:29:52,270 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:29:52,271 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:29:52,271 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:29:52,271 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:29:52,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:29:52,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:29:52,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:29:52,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:29:52,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:29:52,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:29:52,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:29:52,274 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:29:52,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:29:52,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:29:52,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:29:52,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:29:52,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:29:52,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:29:52,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:29:52,276 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:29:52,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:29:52,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:29:52,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:29:52,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:29:52,278 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_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a79b35c65887feb0e3310d99b98c096a3638844b86132f83b5aa5c0d07bcad8 [2021-11-21 01:29:52,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:29:52,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:29:52,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:29:52,566 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:29:52,567 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:29:52,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2021-11-21 01:29:52,683 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/bin/utaipan-TEXQjIfE4P/data/6ec1155cb/0d77637655084504a301b9d883e23fe1/FLAGb7e6a8a4d [2021-11-21 01:29:53,739 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:29:53,739 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2021-11-21 01:29:53,820 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/bin/utaipan-TEXQjIfE4P/data/6ec1155cb/0d77637655084504a301b9d883e23fe1/FLAGb7e6a8a4d [2021-11-21 01:29:54,039 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/bin/utaipan-TEXQjIfE4P/data/6ec1155cb/0d77637655084504a301b9d883e23fe1 [2021-11-21 01:29:54,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:29:54,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:29:54,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:29:54,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:29:54,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:29:54,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:29:54" (1/1) ... [2021-11-21 01:29:54,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f2982e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:54, skipping insertion in model container [2021-11-21 01:29:54,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:29:54" (1/1) ... [2021-11-21 01:29:54,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:29:54,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:29:58,600 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_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490366,490379] [2021-11-21 01:29:58,605 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_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490535,490548] [2021-11-21 01:29:58,605 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_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490702,490715] [2021-11-21 01:29:58,606 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_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490870,490883] [2021-11-21 01:29:58,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:29:58,692 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:29:59,279 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_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490366,490379] [2021-11-21 01:29:59,280 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_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490535,490548] [2021-11-21 01:29:59,280 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_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490702,490715] [2021-11-21 01:29:59,281 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_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490870,490883] [2021-11-21 01:29:59,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:29:59,604 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:29:59,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:59 WrapperNode [2021-11-21 01:29:59,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:29:59,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:29:59,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:29:59,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:29:59,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:59" (1/1) ... [2021-11-21 01:29:59,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:59" (1/1) ... [2021-11-21 01:30:00,150 INFO L137 Inliner]: procedures = 473, calls = 4636, calls flagged for inlining = 228, calls inlined = 198, statements flattened = 8920 [2021-11-21 01:30:00,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:30:00,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:30:00,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:30:00,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:30:00,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:59" (1/1) ... [2021-11-21 01:30:00,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:59" (1/1) ... [2021-11-21 01:30:00,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:59" (1/1) ... [2021-11-21 01:30:00,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:59" (1/1) ... [2021-11-21 01:30:00,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:59" (1/1) ... [2021-11-21 01:30:00,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:59" (1/1) ... [2021-11-21 01:30:00,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:59" (1/1) ... [2021-11-21 01:30:00,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:30:00,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:30:00,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:30:00,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:30:00,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:59" (1/1) ... [2021-11-21 01:30:00,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:30:00,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:00,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:30:00,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a50d68e6-2608-4e33-9ec1-164e24ac6c9f/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:30:00,732 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_reset [2021-11-21 01:30:00,733 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_reset [2021-11-21 01:30:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-11-21 01:30:00,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-11-21 01:30:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_stop [2021-11-21 01:30:00,733 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_stop [2021-11-21 01:30:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_config_parameter_str [2021-11-21 01:30:00,734 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_config_parameter_str [2021-11-21 01:30:00,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:30:00,734 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:30:00,734 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_inform_bss [2021-11-21 01:30:00,734 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_inform_bss [2021-11-21 01:30:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_pause_rx [2021-11-21 01:30:00,735 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_pause_rx [2021-11-21 01:30:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:30:00,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:30:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_tx_fixup [2021-11-21 01:30:00,735 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_tx_fixup [2021-11-21 01:30:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:30:00,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:30:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_bind [2021-11-21 01:30:00,736 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_bind [2021-11-21 01:30:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_set_multicast_list [2021-11-21 01:30:00,736 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_set_multicast_list [2021-11-21 01:30:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_purge_paused_rxq [2021-11-21 01:30:00,737 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_purge_paused_rxq [2021-11-21 01:30:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_unbind [2021-11-21 01:30:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_unbind [2021-11-21 01:30:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure set_encr_mode [2021-11-21 01:30:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure set_encr_mode [2021-11-21 01:30:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure get_rndis_wlan_priv [2021-11-21 01:30:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rndis_wlan_priv [2021-11-21 01:30:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:30:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:30:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2021-11-21 01:30:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2021-11-21 01:30:00,740 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:30:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:30:00,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:30:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:30:00,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:30:00,741 INFO L130 BoogieDeclarations]: Found specification of procedure set_infra_mode [2021-11-21 01:30:00,741 INFO L138 BoogieDeclarations]: Found implementation of procedure set_infra_mode [2021-11-21 01:30:00,742 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_command [2021-11-21 01:30:00,742 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_command [2021-11-21 01:30:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_scan_done [2021-11-21 01:30:00,743 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_scan_done [2021-11-21 01:30:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-21 01:30:00,743 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-21 01:30:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 01:30:00,743 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 01:30:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_fill_station_info [2021-11-21 01:30:00,744 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_fill_station_info [2021-11-21 01:30:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure unknown_early_init [2021-11-21 01:30:00,745 INFO L138 BoogieDeclarations]: Found implementation of procedure unknown_early_init [2021-11-21 01:30:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure disassociate [2021-11-21 01:30:00,745 INFO L138 BoogieDeclarations]: Found implementation of procedure disassociate [2021-11-21 01:30:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-21 01:30:00,745 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-21 01:30:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:30:00,746 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_query_oid [2021-11-21 01:30:00,746 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_query_oid [2021-11-21 01:30:00,746 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2021-11-21 01:30:00,746 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2021-11-21 01:30:00,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:30:00,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:30:00,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:30:00,747 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2021-11-21 01:30:00,747 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2021-11-21 01:30:00,747 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_free [2021-11-21 01:30:00,747 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_free [2021-11-21 01:30:00,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:30:00,748 INFO L130 BoogieDeclarations]: Found specification of procedure is_wpa_key [2021-11-21 01:30:00,749 INFO L138 BoogieDeclarations]: Found implementation of procedure is_wpa_key [2021-11-21 01:30:00,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:30:00,749 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:30:00,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:30:00,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:30:00,750 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_priv [2021-11-21 01:30:00,750 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_priv [2021-11-21 01:30:00,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:30:00,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:30:00,751 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_check_bssid_list [2021-11-21 01:30:00,752 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_check_bssid_list [2021-11-21 01:30:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure __toupper [2021-11-21 01:30:00,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __toupper [2021-11-21 01:30:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:30:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320b_early_init [2021-11-21 01:30:00,755 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320b_early_init [2021-11-21 01:30:00,755 INFO L130 BoogieDeclarations]: Found specification of procedure set_channel [2021-11-21 01:30:00,755 INFO L138 BoogieDeclarations]: Found implementation of procedure set_channel [2021-11-21 01:30:00,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:30:00,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:30:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_status [2021-11-21 01:30:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_status [2021-11-21 01:30:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 01:30:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 01:30:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:30:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure level_to_qual [2021-11-21 01:30:00,757 INFO L138 BoogieDeclarations]: Found implementation of procedure level_to_qual [2021-11-21 01:30:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:30:00,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:30:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure set_essid [2021-11-21 01:30:00,758 INFO L138 BoogieDeclarations]: Found implementation of procedure set_essid [2021-11-21 01:30:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:30:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_put_bss [2021-11-21 01:30:00,761 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_put_bss [2021-11-21 01:30:00,762 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_start_bssid_list_scan [2021-11-21 01:30:00,762 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_start_bssid_list_scan [2021-11-21 01:30:00,762 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:30:00,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:30:00,763 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2021-11-21 01:30:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2021-11-21 01:30:00,764 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_copy_module_params [2021-11-21 01:30:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_copy_module_params [2021-11-21 01:30:00,771 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 01:30:00,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 01:30:00,771 INFO L130 BoogieDeclarations]: Found specification of procedure set_auth_mode [2021-11-21 01:30:00,772 INFO L138 BoogieDeclarations]: Found implementation of procedure set_auth_mode [2021-11-21 01:30:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-21 01:30:00,772 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-21 01:30:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:30:00,772 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:30:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:30:00,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:30:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 01:30:00,773 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 01:30:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-21 01:30:00,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-21 01:30:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:30:00,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:30:00,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:30:00,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:30:00,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-21 01:30:00,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-21 01:30:00,774 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-21 01:30:00,774 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-21 01:30:00,775 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_cipher_to_alg [2021-11-21 01:30:00,775 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_cipher_to_alg [2021-11-21 01:30:00,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:30:00,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:30:00,775 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 01:30:00,775 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 01:30:00,776 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_channel [2021-11-21 01:30:00,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_channel [2021-11-21 01:30:00,776 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-21 01:30:00,776 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-21 01:30:00,776 INFO L130 BoogieDeclarations]: Found specification of procedure add_wep_key [2021-11-21 01:30:00,776 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wep_key [2021-11-21 01:30:00,777 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2021-11-21 01:30:00,777 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2021-11-21 01:30:00,777 INFO L130 BoogieDeclarations]: Found specification of procedure is_broadcast_ether_addr [2021-11-21 01:30:00,777 INFO L138 BoogieDeclarations]: Found implementation of procedure is_broadcast_ether_addr [2021-11-21 01:30:00,777 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 01:30:00,777 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 01:30:00,777 INFO L130 BoogieDeclarations]: Found specification of procedure set_bssid [2021-11-21 01:30:00,778 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bssid [2021-11-21 01:30:00,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:30:00,778 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:30:00,851 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-21 01:30:00,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-21 01:30:00,851 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-21 01:30:00,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-21 01:30:00,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:30:00,851 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:30:00,851 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:30:00,851 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bssid [2021-11-21 01:30:00,851 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bssid [2021-11-21 01:30:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:30:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure set_device_pmkids [2021-11-21 01:30:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure set_device_pmkids [2021-11-21 01:30:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure get_device_pmkids [2021-11-21 01:30:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device_pmkids [2021-11-21 01:30:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure netif_addr_unlock_bh [2021-11-21 01:30:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_addr_unlock_bh [2021-11-21 01:30:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-21 01:30:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-21 01:30:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:30:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure next_bssid_list_item [2021-11-21 01:30:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure next_bssid_list_item [2021-11-21 01:30:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-21 01:30:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-21 01:30:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure set_priv_filter [2021-11-21 01:30:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure set_priv_filter [2021-11-21 01:30:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-21 01:30:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-21 01:30:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:30:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:30:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_wiphy_params [2021-11-21 01:30:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_wiphy_params [2021-11-21 01:30:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:30:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:30:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 01:30:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 01:30:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_7_4 [2021-11-21 01:30:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_7_4 [2021-11-21 01:30:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-21 01:30:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-21 01:30:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 01:30:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 01:30:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure oid_to_string [2021-11-21 01:30:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure oid_to_string [2021-11-21 01:30:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2021-11-21 01:30:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2021-11-21 01:30:00,855 INFO L130 BoogieDeclarations]: Found specification of procedure deauthenticate [2021-11-21 01:30:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure deauthenticate [2021-11-21 01:30:00,855 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:30:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:30:00,855 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320a_early_init [2021-11-21 01:30:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320a_early_init [2021-11-21 01:30:00,855 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_michael_mic_failure [2021-11-21 01:30:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_michael_mic_failure [2021-11-21 01:30:00,855 INFO L130 BoogieDeclarations]: Found specification of procedure set_default_iw_params [2021-11-21 01:30:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure set_default_iw_params [2021-11-21 01:30:00,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:30:00,856 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_error_status [2021-11-21 01:30:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_error_status [2021-11-21 01:30:00,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:30:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:30:00,856 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume_rx [2021-11-21 01:30:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume_rx [2021-11-21 01:30:00,856 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2021-11-21 01:30:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2021-11-21 01:30:00,856 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-21 01:30:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-21 01:30:00,856 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcm4320_power_dbm [2021-11-21 01:30:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcm4320_power_dbm [2021-11-21 01:30:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:30:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:30:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-21 01:30:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-21 01:30:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_rx_fixup [2021-11-21 01:30:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_rx_fixup [2021-11-21 01:30:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_oid [2021-11-21 01:30:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_oid [2021-11-21 01:30:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_indication [2021-11-21 01:30:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_indication [2021-11-21 01:30:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure get_bssid [2021-11-21 01:30:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bssid [2021-11-21 01:30:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure is_associated [2021-11-21 01:30:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure is_associated [2021-11-21 01:30:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-21 01:30:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:30:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-21 01:30:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-21 01:30:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure debug_print_pmkids [2021-11-21 01:30:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_print_pmkids [2021-11-21 01:30:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:30:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:30:01,923 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:30:01,931 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:30:02,373 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:30:21,902 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:30:22,218 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:30:23,775 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:30:23,775 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:30:23,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:30:23 BoogieIcfgContainer [2021-11-21 01:30:23,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:30:23,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:30:23,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:30:23,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:30:23,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:29:54" (1/3) ... [2021-11-21 01:30:23,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a8f3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:30:23, skipping insertion in model container [2021-11-21 01:30:23,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:59" (2/3) ... [2021-11-21 01:30:23,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a8f3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:30:23, skipping insertion in model container [2021-11-21 01:30:23,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:30:23" (3/3) ... [2021-11-21 01:30:23,792 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2021-11-21 01:30:23,799 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:30:23,799 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 01:30:23,881 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:30:23,900 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 01:30:23,901 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 01:30:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 2039 states, 1232 states have (on average 1.3133116883116882) internal successors, (1618), 1236 states have internal predecessors, (1618), 689 states have call successors, (689), 116 states have call predecessors, (689), 115 states have return successors, (681), 681 states have call predecessors, (681), 681 states have call successors, (681) [2021-11-21 01:30:24,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2021-11-21 01:30:24,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:24,022 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 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] [2021-11-21 01:30:24,023 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 01:30:24,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:24,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1193229731, now seen corresponding path program 1 times [2021-11-21 01:30:24,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:24,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508291171] [2021-11-21 01:30:24,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:24,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5115 trivial. 0 not checked. [2021-11-21 01:30:25,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:25,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508291171] [2021-11-21 01:30:25,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508291171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:25,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:25,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:30:25,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664267747] [2021-11-21 01:30:25,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:25,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:30:25,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:25,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:30:25,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:25,256 INFO L87 Difference]: Start difference. First operand has 2039 states, 1232 states have (on average 1.3133116883116882) internal successors, (1618), 1236 states have internal predecessors, (1618), 689 states have call successors, (689), 116 states have call predecessors, (689), 115 states have return successors, (681), 681 states have call predecessors, (681), 681 states have call successors, (681) Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-21 01:30:28,607 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 01:30:31,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:33,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:34,800 INFO L93 Difference]: Finished difference Result 5880 states and 8680 transitions. [2021-11-21 01:30:34,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:30:34,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 385 [2021-11-21 01:30:34,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:34,886 INFO L225 Difference]: With dead ends: 5880 [2021-11-21 01:30:34,887 INFO L226 Difference]: Without dead ends: 3902 [2021-11-21 01:30:34,911 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 01:30:34,919 INFO L933 BasicCegarLoop]: 3209 mSDtfsCounter, 2766 mSDsluCounter, 2913 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2773 SdHoareTripleChecker+Valid, 5705 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:34,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2773 Valid, 5705 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 909 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2021-11-21 01:30:34,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2021-11-21 01:30:35,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3898. [2021-11-21 01:30:35,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3898 states, 2380 states have (on average 1.3096638655462185) internal successors, (3117), 2387 states have internal predecessors, (3117), 1289 states have call successors, (1289), 227 states have call predecessors, (1289), 226 states have return successors, (1292), 1285 states have call predecessors, (1292), 1285 states have call successors, (1292) [2021-11-21 01:30:35,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 5698 transitions. [2021-11-21 01:30:35,499 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 5698 transitions. Word has length 385 [2021-11-21 01:30:35,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:35,504 INFO L470 AbstractCegarLoop]: Abstraction has 3898 states and 5698 transitions. [2021-11-21 01:30:35,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-21 01:30:35,506 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 5698 transitions. [2021-11-21 01:30:35,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2021-11-21 01:30:35,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:35,532 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:35,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:30:35,532 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 01:30:35,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:35,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1790696617, now seen corresponding path program 1 times [2021-11-21 01:30:35,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:35,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833913935] [2021-11-21 01:30:35,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:35,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-21 01:30:36,241 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:36,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833913935] [2021-11-21 01:30:36,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833913935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:36,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:36,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:30:36,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242067868] [2021-11-21 01:30:36,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:36,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:30:36,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:36,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:30:36,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:36,247 INFO L87 Difference]: Start difference. First operand 3898 states and 5698 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 01:30:39,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:41,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:44,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:45,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:45,972 INFO L93 Difference]: Finished difference Result 9573 states and 13978 transitions. [2021-11-21 01:30:45,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:30:45,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 423 [2021-11-21 01:30:45,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:46,041 INFO L225 Difference]: With dead ends: 9573 [2021-11-21 01:30:46,042 INFO L226 Difference]: Without dead ends: 5748 [2021-11-21 01:30:46,070 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 01:30:46,075 INFO L933 BasicCegarLoop]: 3196 mSDtfsCounter, 2732 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2739 SdHoareTripleChecker+Valid, 5687 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:46,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2739 Valid, 5687 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 911 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2021-11-21 01:30:46,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5748 states. [2021-11-21 01:30:46,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5748 to 5722. [2021-11-21 01:30:46,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5722 states, 3508 states have (on average 1.3078677309007982) internal successors, (4588), 3521 states have internal predecessors, (4588), 1869 states have call successors, (1869), 343 states have call predecessors, (1869), 342 states have return successors, (1879), 1860 states have call predecessors, (1879), 1865 states have call successors, (1879) [2021-11-21 01:30:46,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5722 states to 5722 states and 8336 transitions. [2021-11-21 01:30:46,523 INFO L78 Accepts]: Start accepts. Automaton has 5722 states and 8336 transitions. Word has length 423 [2021-11-21 01:30:46,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:46,526 INFO L470 AbstractCegarLoop]: Abstraction has 5722 states and 8336 transitions. [2021-11-21 01:30:46,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 01:30:46,527 INFO L276 IsEmpty]: Start isEmpty. Operand 5722 states and 8336 transitions. [2021-11-21 01:30:46,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-11-21 01:30:46,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:46,549 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:46,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:30:46,551 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 01:30:46,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:46,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1404737944, now seen corresponding path program 1 times [2021-11-21 01:30:46,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:46,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167830165] [2021-11-21 01:30:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:46,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:47,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-21 01:30:47,161 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:47,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167830165] [2021-11-21 01:30:47,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167830165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:47,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:47,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:30:47,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767641187] [2021-11-21 01:30:47,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:47,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:30:47,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:47,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:30:47,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:47,168 INFO L87 Difference]: Start difference. First operand 5722 states and 8336 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 01:30:51,309 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 01:30:53,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:55,829 WARN L515 Checker$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 01:30:57,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:57,046 INFO L93 Difference]: Finished difference Result 16754 states and 24405 transitions. [2021-11-21 01:30:57,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:30:57,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 431 [2021-11-21 01:30:57,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:57,199 INFO L225 Difference]: With dead ends: 16754 [2021-11-21 01:30:57,200 INFO L226 Difference]: Without dead ends: 11105 [2021-11-21 01:30:57,257 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 01:30:57,262 INFO L933 BasicCegarLoop]: 3231 mSDtfsCounter, 2687 mSDsluCounter, 2916 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 5726 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:57,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2694 Valid, 5726 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 920 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2021-11-21 01:30:57,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11105 states. [2021-11-21 01:30:58,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11105 to 11075. [2021-11-21 01:30:58,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11075 states, 6813 states have (on average 1.3058858065463086) internal successors, (8897), 6843 states have internal predecessors, (8897), 3590 states have call successors, (3590), 670 states have call predecessors, (3590), 669 states have return successors, (3621), 3567 states have call predecessors, (3621), 3586 states have call successors, (3621) [2021-11-21 01:30:58,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11075 states to 11075 states and 16108 transitions. [2021-11-21 01:30:58,196 INFO L78 Accepts]: Start accepts. Automaton has 11075 states and 16108 transitions. Word has length 431 [2021-11-21 01:30:58,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:58,201 INFO L470 AbstractCegarLoop]: Abstraction has 11075 states and 16108 transitions. [2021-11-21 01:30:58,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 01:30:58,203 INFO L276 IsEmpty]: Start isEmpty. Operand 11075 states and 16108 transitions. [2021-11-21 01:30:58,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2021-11-21 01:30:58,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:58,229 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:58,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:30:58,230 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 01:30:58,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:58,231 INFO L85 PathProgramCache]: Analyzing trace with hash -507529628, now seen corresponding path program 1 times [2021-11-21 01:30:58,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:58,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658373899] [2021-11-21 01:30:58,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:58,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-21 01:30:58,783 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:58,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658373899] [2021-11-21 01:30:58,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658373899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:58,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:58,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:30:58,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318510961] [2021-11-21 01:30:58,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:58,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:30:58,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:58,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:30:58,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:58,787 INFO L87 Difference]: Start difference. First operand 11075 states and 16108 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 01:31:02,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:05,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:07,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:08,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:08,831 INFO L93 Difference]: Finished difference Result 29089 states and 42252 transitions. [2021-11-21 01:31:08,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:31:08,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 424 [2021-11-21 01:31:08,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:09,002 INFO L225 Difference]: With dead ends: 29089 [2021-11-21 01:31:09,002 INFO L226 Difference]: Without dead ends: 18087 [2021-11-21 01:31:09,091 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 01:31:09,096 INFO L933 BasicCegarLoop]: 3232 mSDtfsCounter, 2731 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2738 SdHoareTripleChecker+Valid, 5723 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:09,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2738 Valid, 5723 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 925 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2021-11-21 01:31:09,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18087 states. [2021-11-21 01:31:10,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18087 to 18059. [2021-11-21 01:31:10,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18059 states, 11138 states have (on average 1.3036451786676244) internal successors, (14520), 11196 states have internal predecessors, (14520), 5800 states have call successors, (5800), 1119 states have call predecessors, (5800), 1118 states have return successors, (5838), 5753 states have call predecessors, (5838), 5796 states have call successors, (5838) [2021-11-21 01:31:10,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18059 states to 18059 states and 26158 transitions. [2021-11-21 01:31:10,217 INFO L78 Accepts]: Start accepts. Automaton has 18059 states and 26158 transitions. Word has length 424 [2021-11-21 01:31:10,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:10,220 INFO L470 AbstractCegarLoop]: Abstraction has 18059 states and 26158 transitions. [2021-11-21 01:31:10,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 01:31:10,220 INFO L276 IsEmpty]: Start isEmpty. Operand 18059 states and 26158 transitions. [2021-11-21 01:31:10,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2021-11-21 01:31:10,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:10,242 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:31:10,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:31:10,243 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 01:31:10,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:10,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1098935364, now seen corresponding path program 1 times [2021-11-21 01:31:10,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:10,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55892965] [2021-11-21 01:31:10,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:10,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-21 01:31:10,841 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:10,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55892965] [2021-11-21 01:31:10,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55892965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:10,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:10,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:31:10,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369417248] [2021-11-21 01:31:10,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:10,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:31:10,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:10,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:31:10,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:31:10,845 INFO L87 Difference]: Start difference. First operand 18059 states and 26158 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 01:31:13,940 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 01:31:17,230 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:19,319 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:20,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:20,759 INFO L93 Difference]: Finished difference Result 49131 states and 71202 transitions. [2021-11-21 01:31:20,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:31:20,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 425 [2021-11-21 01:31:20,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:20,954 INFO L225 Difference]: With dead ends: 49131 [2021-11-21 01:31:20,955 INFO L226 Difference]: Without dead ends: 31145 [2021-11-21 01:31:21,043 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 01:31:21,044 INFO L933 BasicCegarLoop]: 3435 mSDtfsCounter, 2730 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2737 SdHoareTripleChecker+Valid, 5926 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:21,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2737 Valid, 5926 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 987 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2021-11-21 01:31:21,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31145 states. [2021-11-21 01:31:23,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31145 to 31117. [2021-11-21 01:31:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31117 states, 19244 states have (on average 1.302431926834338) internal successors, (25064), 19358 states have internal predecessors, (25064), 9937 states have call successors, (9937), 1934 states have call predecessors, (9937), 1933 states have return successors, (10017), 9842 states have call predecessors, (10017), 9933 states have call successors, (10017) [2021-11-21 01:31:23,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31117 states to 31117 states and 45018 transitions. [2021-11-21 01:31:23,371 INFO L78 Accepts]: Start accepts. Automaton has 31117 states and 45018 transitions. Word has length 425 [2021-11-21 01:31:23,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:23,372 INFO L470 AbstractCegarLoop]: Abstraction has 31117 states and 45018 transitions. [2021-11-21 01:31:23,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 01:31:23,373 INFO L276 IsEmpty]: Start isEmpty. Operand 31117 states and 45018 transitions. [2021-11-21 01:31:23,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-21 01:31:23,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:23,400 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 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] [2021-11-21 01:31:23,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:31:23,401 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:31:23,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:23,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1161040783, now seen corresponding path program 1 times [2021-11-21 01:31:23,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:23,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682950994] [2021-11-21 01:31:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:23,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:24,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5374 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2021-11-21 01:31:24,128 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:24,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682950994] [2021-11-21 01:31:24,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682950994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:24,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:24,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:31:24,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294662082] [2021-11-21 01:31:24,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:24,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:31:24,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:24,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:31:24,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:31:24,131 INFO L87 Difference]: Start difference. First operand 31117 states and 45018 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-21 01:31:27,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:32,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:34,886 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 01:31:37,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:37,826 INFO L93 Difference]: Finished difference Result 59367 states and 85919 transitions. [2021-11-21 01:31:37,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:31:37,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 432 [2021-11-21 01:31:37,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:38,132 INFO L225 Difference]: With dead ends: 59367 [2021-11-21 01:31:38,132 INFO L226 Difference]: Without dead ends: 59365 [2021-11-21 01:31:38,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:31:38,164 INFO L933 BasicCegarLoop]: 3568 mSDtfsCounter, 2844 mSDsluCounter, 11067 mSDsCounter, 0 mSdLazyCounter, 2113 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2861 SdHoareTripleChecker+Valid, 13098 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2113 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:38,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2861 Valid, 13098 Invalid, 2117 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2113 Invalid, 3 Unknown, 0 Unchecked, 11.8s Time] [2021-11-21 01:31:38,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59365 states. [2021-11-21 01:31:40,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59365 to 59359. [2021-11-21 01:31:41,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59359 states, 36684 states have (on average 1.3032929887689455) internal successors, (47810), 36906 states have internal predecessors, (47810), 18972 states have call successors, (18972), 3702 states have call predecessors, (18972), 3700 states have return successors, (19132), 18784 states have call predecessors, (19132), 18964 states have call successors, (19132) [2021-11-21 01:31:41,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59359 states to 59359 states and 85914 transitions. [2021-11-21 01:31:41,855 INFO L78 Accepts]: Start accepts. Automaton has 59359 states and 85914 transitions. Word has length 432 [2021-11-21 01:31:41,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:41,857 INFO L470 AbstractCegarLoop]: Abstraction has 59359 states and 85914 transitions. [2021-11-21 01:31:41,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-21 01:31:41,858 INFO L276 IsEmpty]: Start isEmpty. Operand 59359 states and 85914 transitions. [2021-11-21 01:31:41,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-21 01:31:41,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:41,881 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 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] [2021-11-21 01:31:41,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:31:41,881 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:31:41,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:41,882 INFO L85 PathProgramCache]: Analyzing trace with hash 4412813, now seen corresponding path program 1 times [2021-11-21 01:31:41,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:41,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201673428] [2021-11-21 01:31:41,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:41,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5377 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5375 trivial. 0 not checked. [2021-11-21 01:31:42,737 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:42,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201673428] [2021-11-21 01:31:42,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201673428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:42,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:42,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:31:42,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567524670] [2021-11-21 01:31:42,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:42,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:31:42,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:42,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:31:42,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:31:42,741 INFO L87 Difference]: Start difference. First operand 59359 states and 85914 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-21 01:31:46,395 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 01:31:51,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:53,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:56,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:56,265 INFO L93 Difference]: Finished difference Result 87532 states and 126609 transitions. [2021-11-21 01:31:56,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:31:56,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 438 [2021-11-21 01:31:56,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:56,748 INFO L225 Difference]: With dead ends: 87532 [2021-11-21 01:31:56,748 INFO L226 Difference]: Without dead ends: 87530 [2021-11-21 01:31:56,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:31:56,783 INFO L933 BasicCegarLoop]: 3568 mSDtfsCounter, 2815 mSDsluCounter, 11042 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2831 SdHoareTripleChecker+Valid, 13077 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:56,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2831 Valid, 13077 Invalid, 2115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2110 Invalid, 3 Unknown, 0 Unchecked, 11.3s Time] [2021-11-21 01:31:56,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87530 states. [2021-11-21 01:32:00,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87530 to 87511. [2021-11-21 01:32:00,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87511 states, 54022 states have (on average 1.3028395838732367) internal successors, (70382), 54367 states have internal predecessors, (70382), 27952 states have call successors, (27952), 5537 states have call predecessors, (27952), 5534 states have return successors, (28255), 27656 states have call predecessors, (28255), 27940 states have call successors, (28255) [2021-11-21 01:32:01,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87511 states to 87511 states and 126589 transitions. [2021-11-21 01:32:01,945 INFO L78 Accepts]: Start accepts. Automaton has 87511 states and 126589 transitions. Word has length 438 [2021-11-21 01:32:01,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:32:01,947 INFO L470 AbstractCegarLoop]: Abstraction has 87511 states and 126589 transitions. [2021-11-21 01:32:01,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-21 01:32:01,948 INFO L276 IsEmpty]: Start isEmpty. Operand 87511 states and 126589 transitions. [2021-11-21 01:32:01,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2021-11-21 01:32:01,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:32:01,965 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 4, 4, 3, 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] [2021-11-21 01:32:01,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:32:01,966 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 01:32:01,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:32:01,967 INFO L85 PathProgramCache]: Analyzing trace with hash 2021480452, now seen corresponding path program 1 times [2021-11-21 01:32:01,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:32:01,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411323043] [2021-11-21 01:32:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:32:01,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:32:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:32:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5381 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5377 trivial. 0 not checked. [2021-11-21 01:32:02,798 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:32:02,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411323043] [2021-11-21 01:32:02,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411323043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:32:02,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:32:02,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:32:02,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374759607] [2021-11-21 01:32:02,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:32:02,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:32:02,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:32:02,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:32:02,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:32:02,802 INFO L87 Difference]: Start difference. First operand 87511 states and 126589 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-21 01:32:06,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:11,235 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:13,323 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:15,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:32:15,996 INFO L93 Difference]: Finished difference Result 87523 states and 126597 transitions. [2021-11-21 01:32:15,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:32:15,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 445 [2021-11-21 01:32:15,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:32:16,438 INFO L225 Difference]: With dead ends: 87523 [2021-11-21 01:32:16,438 INFO L226 Difference]: Without dead ends: 87521 [2021-11-21 01:32:16,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:32:16,488 INFO L933 BasicCegarLoop]: 3572 mSDtfsCounter, 2842 mSDsluCounter, 11073 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2857 SdHoareTripleChecker+Valid, 13104 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:32:16,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2857 Valid, 13104 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2120 Invalid, 3 Unknown, 0 Unchecked, 11.0s Time] [2021-11-21 01:32:16,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87521 states. [2021-11-21 01:32:19,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87521 to 87515. [2021-11-21 01:32:19,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87515 states, 54025 states have (on average 1.30282276723739) internal successors, (70385), 54370 states have internal predecessors, (70385), 27952 states have call successors, (27952), 5538 states have call predecessors, (27952), 5535 states have return successors, (28255), 27656 states have call predecessors, (28255), 27940 states have call successors, (28255) [2021-11-21 01:32:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87515 states to 87515 states and 126592 transitions. [2021-11-21 01:32:20,440 INFO L78 Accepts]: Start accepts. Automaton has 87515 states and 126592 transitions. Word has length 445 [2021-11-21 01:32:20,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:32:20,441 INFO L470 AbstractCegarLoop]: Abstraction has 87515 states and 126592 transitions. [2021-11-21 01:32:20,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-21 01:32:20,442 INFO L276 IsEmpty]: Start isEmpty. Operand 87515 states and 126592 transitions. [2021-11-21 01:32:20,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2021-11-21 01:32:20,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:32:20,461 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:32:20,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:32:20,462 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 01:32:20,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:32:20,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1391298391, now seen corresponding path program 1 times [2021-11-21 01:32:20,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:32:20,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196703218] [2021-11-21 01:32:20,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:32:20,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:32:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:32:20,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5391 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5385 trivial. 0 not checked. [2021-11-21 01:32:20,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:32:20,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196703218] [2021-11-21 01:32:20,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196703218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:32:20,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:32:20,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:32:20,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219079135] [2021-11-21 01:32:20,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:32:20,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:32:20,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:32:20,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:32:20,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:32:20,993 INFO L87 Difference]: Start difference. First operand 87515 states and 126592 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-21 01:32:24,649 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 01:32:29,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:31,602 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:34,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:32:34,788 INFO L93 Difference]: Finished difference Result 87527 states and 126600 transitions. [2021-11-21 01:32:34,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:32:34,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 450 [2021-11-21 01:32:34,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:32:35,261 INFO L225 Difference]: With dead ends: 87527 [2021-11-21 01:32:35,261 INFO L226 Difference]: Without dead ends: 87525 [2021-11-21 01:32:35,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:32:35,321 INFO L933 BasicCegarLoop]: 3572 mSDtfsCounter, 2842 mSDsluCounter, 11073 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2856 SdHoareTripleChecker+Valid, 13104 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:32:35,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2856 Valid, 13104 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2120 Invalid, 3 Unknown, 0 Unchecked, 11.2s Time] [2021-11-21 01:32:35,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87525 states. [2021-11-21 01:32:38,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87525 to 87519. [2021-11-21 01:32:38,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87519 states, 54028 states have (on average 1.30280595246909) internal successors, (70388), 54373 states have internal predecessors, (70388), 27952 states have call successors, (27952), 5539 states have call predecessors, (27952), 5536 states have return successors, (28255), 27656 states have call predecessors, (28255), 27940 states have call successors, (28255) [2021-11-21 01:32:39,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87519 states to 87519 states and 126595 transitions. [2021-11-21 01:32:39,199 INFO L78 Accepts]: Start accepts. Automaton has 87519 states and 126595 transitions. Word has length 450 [2021-11-21 01:32:39,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:32:39,201 INFO L470 AbstractCegarLoop]: Abstraction has 87519 states and 126595 transitions. [2021-11-21 01:32:39,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-21 01:32:39,201 INFO L276 IsEmpty]: Start isEmpty. Operand 87519 states and 126595 transitions. [2021-11-21 01:32:39,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2021-11-21 01:32:39,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:32:39,223 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 5, 4, 4, 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] [2021-11-21 01:32:39,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:32:39,224 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 01:32:39,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:32:39,224 INFO L85 PathProgramCache]: Analyzing trace with hash 699865521, now seen corresponding path program 1 times [2021-11-21 01:32:39,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:32:39,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8082348] [2021-11-21 01:32:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:32:39,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:32:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:32:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5398 trivial. 0 not checked. [2021-11-21 01:32:39,716 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:32:39,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8082348] [2021-11-21 01:32:39,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8082348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:32:39,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:32:39,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:32:39,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766414079] [2021-11-21 01:32:39,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:32:39,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:32:39,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:32:39,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:32:39,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:32:39,719 INFO L87 Difference]: Start difference. First operand 87519 states and 126595 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-21 01:32:43,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:47,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:49,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:52,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:32:52,637 INFO L93 Difference]: Finished difference Result 87531 states and 126603 transitions. [2021-11-21 01:32:52,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:32:52,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 452 [2021-11-21 01:32:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:32:53,047 INFO L225 Difference]: With dead ends: 87531 [2021-11-21 01:32:53,047 INFO L226 Difference]: Without dead ends: 87529 [2021-11-21 01:32:53,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:32:53,098 INFO L933 BasicCegarLoop]: 3572 mSDtfsCounter, 2841 mSDsluCounter, 11073 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2854 SdHoareTripleChecker+Valid, 13104 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:32:53,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2854 Valid, 13104 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2120 Invalid, 3 Unknown, 0 Unchecked, 11.0s Time] [2021-11-21 01:32:53,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87529 states. [2021-11-21 01:32:56,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87529 to 87523. [2021-11-21 01:32:56,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87523 states, 54031 states have (on average 1.3027891395680258) internal successors, (70391), 54376 states have internal predecessors, (70391), 27952 states have call successors, (27952), 5540 states have call predecessors, (27952), 5537 states have return successors, (28255), 27656 states have call predecessors, (28255), 27940 states have call successors, (28255) [2021-11-21 01:32:56,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87523 states to 87523 states and 126598 transitions. [2021-11-21 01:32:57,008 INFO L78 Accepts]: Start accepts. Automaton has 87523 states and 126598 transitions. Word has length 452 [2021-11-21 01:32:57,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:32:57,009 INFO L470 AbstractCegarLoop]: Abstraction has 87523 states and 126598 transitions. [2021-11-21 01:32:57,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-21 01:32:57,009 INFO L276 IsEmpty]: Start isEmpty. Operand 87523 states and 126598 transitions. [2021-11-21 01:32:57,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2021-11-21 01:32:57,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:32:57,031 INFO L514 BasicCegarLoop]: trace histogram [38, 36, 36, 36, 36, 36, 36, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:32:57,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:32:57,032 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:32:57,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:32:57,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1426447475, now seen corresponding path program 1 times [2021-11-21 01:32:57,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:32:57,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331934597] [2021-11-21 01:32:57,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:32:57,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:32:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:32:57,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5203 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5192 trivial. 0 not checked. [2021-11-21 01:32:57,425 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:32:57,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331934597] [2021-11-21 01:32:57,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331934597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:32:57,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:32:57,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:32:57,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296127266] [2021-11-21 01:32:57,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:32:57,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:32:57,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:32:57,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:32:57,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:32:57,428 INFO L87 Difference]: Start difference. First operand 87523 states and 126598 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-21 01:33:00,126 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 01:33:05,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:07,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:10,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:10,283 INFO L93 Difference]: Finished difference Result 214147 states and 309621 transitions. [2021-11-21 01:33:10,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:33:10,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 453 [2021-11-21 01:33:10,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:10,819 INFO L225 Difference]: With dead ends: 214147 [2021-11-21 01:33:10,819 INFO L226 Difference]: Without dead ends: 126697 [2021-11-21 01:33:11,097 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 01:33:11,098 INFO L933 BasicCegarLoop]: 3697 mSDtfsCounter, 2684 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2691 SdHoareTripleChecker+Valid, 6210 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:11,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2691 Valid, 6210 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1020 Invalid, 3 Unknown, 0 Unchecked, 8.5s Time] [2021-11-21 01:33:11,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126697 states.