./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 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef2ef09-3b21-429c-915a-75ccf3822721/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef2ef09-3b21-429c-915a-75ccf3822721/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef2ef09-3b21-429c-915a-75ccf3822721/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef2ef09-3b21-429c-915a-75ccf3822721/bin/utaipan-Q6hlc19bkW/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_7ef2ef09-3b21-429c-915a-75ccf3822721/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef2ef09-3b21-429c-915a-75ccf3822721/bin/utaipan-Q6hlc19bkW --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:49:52,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:49:52,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:49:52,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:49:52,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:49:52,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:49:52,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:49:52,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:49:52,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:49:52,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:49:52,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:49:52,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:49:52,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:49:52,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:49:52,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:49:52,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:49:52,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:49:52,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:49:52,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:49:52,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:49:52,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:49:52,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:49:52,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:49:52,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:49:52,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:49:52,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:49:52,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:49:52,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:49:52,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:49:52,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:49:52,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:49:52,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:49:52,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:49:52,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:49:52,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:49:52,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:49:52,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:49:52,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:49:52,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:49:52,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:49:52,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:49:52,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef2ef09-3b21-429c-915a-75ccf3822721/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:49:52,326 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:49:52,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:49:52,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:49:52,327 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:49:52,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:49:52,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:49:52,329 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:49:52,329 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:49:52,330 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:49:52,330 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:49:52,331 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:49:52,331 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:49:52,331 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:49:52,332 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:49:52,332 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:49:52,332 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:49:52,333 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:49:52,333 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:49:52,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:49:52,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:49:52,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:49:52,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:49:52,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:49:52,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:49:52,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:49:52,336 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:49:52,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:49:52,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:49:52,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:49:52,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:49:52,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:49:52,338 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:49:52,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:49:52,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:49:52,339 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:49:52,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:49:52,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:49:52,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:49:52,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef2ef09-3b21-429c-915a-75ccf3822721/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef2ef09-3b21-429c-915a-75ccf3822721/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a79b35c65887feb0e3310d99b98c096a3638844b86132f83b5aa5c0d07bcad8 [2022-11-23 15:49:52,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:49:52,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:49:52,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:49:52,678 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:49:52,679 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:49:52,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef2ef09-3b21-429c-915a-75ccf3822721/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2022-11-23 15:49:56,197 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:49:57,085 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:49:57,086 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef2ef09-3b21-429c-915a-75ccf3822721/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2022-11-23 15:49:57,181 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef2ef09-3b21-429c-915a-75ccf3822721/bin/utaipan-Q6hlc19bkW/data/4bb982da3/02a9db8d536a4cb78a5f96c92991e46d/FLAG8e755fd7d [2022-11-23 15:49:57,206 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef2ef09-3b21-429c-915a-75ccf3822721/bin/utaipan-Q6hlc19bkW/data/4bb982da3/02a9db8d536a4cb78a5f96c92991e46d [2022-11-23 15:49:57,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:49:57,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:49:57,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:49:57,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:49:57,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:49:57,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:49:57" (1/1) ... [2022-11-23 15:49:57,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c4f4c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:49:57, skipping insertion in model container [2022-11-23 15:49:57,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:49:57" (1/1) ... [2022-11-23 15:49:57,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:49:57,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:50:01,922 WARN L237 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_7ef2ef09-3b21-429c-915a-75ccf3822721/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490366,490379] [2022-11-23 15:50:01,926 WARN L237 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_7ef2ef09-3b21-429c-915a-75ccf3822721/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490535,490548] [2022-11-23 15:50:01,927 WARN L237 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_7ef2ef09-3b21-429c-915a-75ccf3822721/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490702,490715] [2022-11-23 15:50:01,927 WARN L237 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_7ef2ef09-3b21-429c-915a-75ccf3822721/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490870,490883] [2022-11-23 15:50:01,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:50:02,026 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:50:02,579 WARN L237 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_7ef2ef09-3b21-429c-915a-75ccf3822721/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490366,490379] [2022-11-23 15:50:02,580 WARN L237 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_7ef2ef09-3b21-429c-915a-75ccf3822721/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490535,490548] [2022-11-23 15:50:02,580 WARN L237 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_7ef2ef09-3b21-429c-915a-75ccf3822721/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490702,490715] [2022-11-23 15:50:02,581 WARN L237 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_7ef2ef09-3b21-429c-915a-75ccf3822721/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490870,490883] [2022-11-23 15:50:02,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:50:02,904 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:50:02,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:02 WrapperNode [2022-11-23 15:50:02,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:50:02,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:50:02,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:50:02,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:50:02,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:02" (1/1) ... [2022-11-23 15:50:03,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:02" (1/1) ... [2022-11-23 15:50:03,329 INFO L138 Inliner]: procedures = 473, calls = 4700, calls flagged for inlining = 228, calls inlined = 198, statements flattened = 8990 [2022-11-23 15:50:03,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:50:03,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:50:03,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:50:03,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:50:03,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:02" (1/1) ... [2022-11-23 15:50:03,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:02" (1/1) ... [2022-11-23 15:50:03,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:02" (1/1) ... [2022-11-23 15:50:03,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:02" (1/1) ... [2022-11-23 15:50:03,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:02" (1/1) ... [2022-11-23 15:50:03,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:02" (1/1) ... [2022-11-23 15:50:03,713 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:02" (1/1) ... [2022-11-23 15:50:03,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:02" (1/1) ... [2022-11-23 15:50:03,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:50:03,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:50:03,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:50:03,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:50:03,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:02" (1/1) ... [2022-11-23 15:50:03,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:50:03,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef2ef09-3b21-429c-915a-75ccf3822721/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:50:03,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef2ef09-3b21-429c-915a-75ccf3822721/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:50:04,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef2ef09-3b21-429c-915a-75ccf3822721/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:50:04,102 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_reset [2022-11-23 15:50:04,103 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_reset [2022-11-23 15:50:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2022-11-23 15:50:04,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2022-11-23 15:50:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_stop [2022-11-23 15:50:04,103 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_stop [2022-11-23 15:50:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_config_parameter_str [2022-11-23 15:50:04,104 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_config_parameter_str [2022-11-23 15:50:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 15:50:04,104 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 15:50:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_inform_bss [2022-11-23 15:50:04,104 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_inform_bss [2022-11-23 15:50:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_pause_rx [2022-11-23 15:50:04,105 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_pause_rx [2022-11-23 15:50:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:50:04,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:50:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_tx_fixup [2022-11-23 15:50:04,106 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_tx_fixup [2022-11-23 15:50:04,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 15:50:04,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 15:50:04,107 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_bind [2022-11-23 15:50:04,107 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_bind [2022-11-23 15:50:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_set_multicast_list [2022-11-23 15:50:04,108 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_set_multicast_list [2022-11-23 15:50:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_purge_paused_rxq [2022-11-23 15:50:04,108 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_purge_paused_rxq [2022-11-23 15:50:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_unbind [2022-11-23 15:50:04,109 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_unbind [2022-11-23 15:50:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure set_encr_mode [2022-11-23 15:50:04,109 INFO L138 BoogieDeclarations]: Found implementation of procedure set_encr_mode [2022-11-23 15:50:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure get_rndis_wlan_priv [2022-11-23 15:50:04,110 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rndis_wlan_priv [2022-11-23 15:50:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 15:50:04,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 15:50:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2022-11-23 15:50:04,110 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2022-11-23 15:50:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 15:50:04,111 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 15:50:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 15:50:04,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 15:50:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:50:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure set_infra_mode [2022-11-23 15:50:04,111 INFO L138 BoogieDeclarations]: Found implementation of procedure set_infra_mode [2022-11-23 15:50:04,112 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_command [2022-11-23 15:50:04,112 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_command [2022-11-23 15:50:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_scan_done [2022-11-23 15:50:04,113 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_scan_done [2022-11-23 15:50:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-23 15:50:04,113 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-23 15:50:04,113 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 15:50:04,114 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 15:50:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_fill_station_info [2022-11-23 15:50:04,114 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_fill_station_info [2022-11-23 15:50:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure unknown_early_init [2022-11-23 15:50:04,115 INFO L138 BoogieDeclarations]: Found implementation of procedure unknown_early_init [2022-11-23 15:50:04,115 INFO L130 BoogieDeclarations]: Found specification of procedure disassociate [2022-11-23 15:50:04,115 INFO L138 BoogieDeclarations]: Found implementation of procedure disassociate [2022-11-23 15:50:04,115 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2022-11-23 15:50:04,115 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2022-11-23 15:50:04,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 15:50:04,115 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_query_oid [2022-11-23 15:50:04,116 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_query_oid [2022-11-23 15:50:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2022-11-23 15:50:04,116 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2022-11-23 15:50:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:50:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 15:50:04,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 15:50:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2022-11-23 15:50:04,118 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2022-11-23 15:50:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_free [2022-11-23 15:50:04,119 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_free [2022-11-23 15:50:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:50:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure is_wpa_key [2022-11-23 15:50:04,119 INFO L138 BoogieDeclarations]: Found implementation of procedure is_wpa_key [2022-11-23 15:50:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 15:50:04,119 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 15:50:04,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 15:50:04,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 15:50:04,121 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_priv [2022-11-23 15:50:04,121 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_priv [2022-11-23 15:50:04,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 15:50:04,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 15:50:04,121 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_check_bssid_list [2022-11-23 15:50:04,121 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_check_bssid_list [2022-11-23 15:50:04,122 INFO L130 BoogieDeclarations]: Found specification of procedure __toupper [2022-11-23 15:50:04,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __toupper [2022-11-23 15:50:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:50:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320b_early_init [2022-11-23 15:50:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320b_early_init [2022-11-23 15:50:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure set_channel [2022-11-23 15:50:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure set_channel [2022-11-23 15:50:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 15:50:04,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 15:50:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_status [2022-11-23 15:50:04,124 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_status [2022-11-23 15:50:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-23 15:50:04,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-23 15:50:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:50:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure level_to_qual [2022-11-23 15:50:04,125 INFO L138 BoogieDeclarations]: Found implementation of procedure level_to_qual [2022-11-23 15:50:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 15:50:04,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 15:50:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure set_essid [2022-11-23 15:50:04,126 INFO L138 BoogieDeclarations]: Found implementation of procedure set_essid [2022-11-23 15:50:04,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:50:04,131 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_put_bss [2022-11-23 15:50:04,131 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_put_bss [2022-11-23 15:50:04,132 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_start_bssid_list_scan [2022-11-23 15:50:04,132 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_start_bssid_list_scan [2022-11-23 15:50:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 15:50:04,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 15:50:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2022-11-23 15:50:04,134 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2022-11-23 15:50:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_copy_module_params [2022-11-23 15:50:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_copy_module_params [2022-11-23 15:50:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 15:50:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 15:50:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure set_auth_mode [2022-11-23 15:50:04,140 INFO L138 BoogieDeclarations]: Found implementation of procedure set_auth_mode [2022-11-23 15:50:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2022-11-23 15:50:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2022-11-23 15:50:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 15:50:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 15:50:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:50:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:50:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 15:50:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 15:50:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-23 15:50:04,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-23 15:50:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 15:50:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 15:50:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:50:04,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:50:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2022-11-23 15:50:04,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2022-11-23 15:50:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-23 15:50:04,143 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-23 15:50:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_cipher_to_alg [2022-11-23 15:50:04,143 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_cipher_to_alg [2022-11-23 15:50:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 15:50:04,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 15:50:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 15:50:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 15:50:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_channel [2022-11-23 15:50:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_channel [2022-11-23 15:50:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-23 15:50:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-23 15:50:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure add_wep_key [2022-11-23 15:50:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wep_key [2022-11-23 15:50:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2022-11-23 15:50:04,145 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2022-11-23 15:50:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure is_broadcast_ether_addr [2022-11-23 15:50:04,145 INFO L138 BoogieDeclarations]: Found implementation of procedure is_broadcast_ether_addr [2022-11-23 15:50:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 15:50:04,145 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 15:50:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure set_bssid [2022-11-23 15:50:04,145 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bssid [2022-11-23 15:50:04,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 15:50:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 15:50:04,146 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-23 15:50:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-23 15:50:04,146 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-23 15:50:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-23 15:50:04,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:50:04,147 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 15:50:04,147 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 15:50:04,147 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bssid [2022-11-23 15:50:04,147 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bssid [2022-11-23 15:50:04,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:50:04,147 INFO L130 BoogieDeclarations]: Found specification of procedure set_device_pmkids [2022-11-23 15:50:04,147 INFO L138 BoogieDeclarations]: Found implementation of procedure set_device_pmkids [2022-11-23 15:50:04,148 INFO L130 BoogieDeclarations]: Found specification of procedure get_device_pmkids [2022-11-23 15:50:04,148 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device_pmkids [2022-11-23 15:50:04,148 INFO L130 BoogieDeclarations]: Found specification of procedure netif_addr_unlock_bh [2022-11-23 15:50:04,148 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_addr_unlock_bh [2022-11-23 15:50:04,148 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-23 15:50:04,148 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-23 15:50:04,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:50:04,148 INFO L130 BoogieDeclarations]: Found specification of procedure next_bssid_list_item [2022-11-23 15:50:04,149 INFO L138 BoogieDeclarations]: Found implementation of procedure next_bssid_list_item [2022-11-23 15:50:04,149 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 15:50:04,168 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 15:50:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure set_priv_filter [2022-11-23 15:50:04,183 INFO L138 BoogieDeclarations]: Found implementation of procedure set_priv_filter [2022-11-23 15:50:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-23 15:50:04,183 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-23 15:50:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 15:50:04,183 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 15:50:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_wiphy_params [2022-11-23 15:50:04,183 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_wiphy_params [2022-11-23 15:50:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 15:50:04,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 15:50:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 15:50:04,184 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 15:50:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_7_4 [2022-11-23 15:50:04,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_7_4 [2022-11-23 15:50:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-23 15:50:04,184 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-23 15:50:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-23 15:50:04,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-23 15:50:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure oid_to_string [2022-11-23 15:50:04,184 INFO L138 BoogieDeclarations]: Found implementation of procedure oid_to_string [2022-11-23 15:50:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-11-23 15:50:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-11-23 15:50:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure deauthenticate [2022-11-23 15:50:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure deauthenticate [2022-11-23 15:50:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 15:50:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 15:50:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320a_early_init [2022-11-23 15:50:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320a_early_init [2022-11-23 15:50:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_michael_mic_failure [2022-11-23 15:50:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_michael_mic_failure [2022-11-23 15:50:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure set_default_iw_params [2022-11-23 15:50:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure set_default_iw_params [2022-11-23 15:50:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:50:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_error_status [2022-11-23 15:50:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_error_status [2022-11-23 15:50:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:50:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:50:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume_rx [2022-11-23 15:50:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume_rx [2022-11-23 15:50:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2022-11-23 15:50:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2022-11-23 15:50:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-23 15:50:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-23 15:50:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcm4320_power_dbm [2022-11-23 15:50:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcm4320_power_dbm [2022-11-23 15:50:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 15:50:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 15:50:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-23 15:50:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-23 15:50:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_rx_fixup [2022-11-23 15:50:04,192 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_rx_fixup [2022-11-23 15:50:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_oid [2022-11-23 15:50:04,192 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_oid [2022-11-23 15:50:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_indication [2022-11-23 15:50:04,192 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_indication [2022-11-23 15:50:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure get_bssid [2022-11-23 15:50:04,193 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bssid [2022-11-23 15:50:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure is_associated [2022-11-23 15:50:04,193 INFO L138 BoogieDeclarations]: Found implementation of procedure is_associated [2022-11-23 15:50:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-23 15:50:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:50:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-23 15:50:04,194 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-23 15:50:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure debug_print_pmkids [2022-11-23 15:50:04,195 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_print_pmkids [2022-11-23 15:50:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 15:50:04,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 15:50:05,568 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:50:05,572 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:50:06,247 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:50:30,873 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 15:50:31,334 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:50:33,843 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:50:33,843 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:50:33,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:50:33 BoogieIcfgContainer [2022-11-23 15:50:33,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:50:33,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:50:33,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:50:33,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:50:33,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:49:57" (1/3) ... [2022-11-23 15:50:33,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b848622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:50:33, skipping insertion in model container [2022-11-23 15:50:33,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:02" (2/3) ... [2022-11-23 15:50:33,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b848622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:50:33, skipping insertion in model container [2022-11-23 15:50:33,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:50:33" (3/3) ... [2022-11-23 15:50:33,866 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2022-11-23 15:50:33,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:50:33,891 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-23 15:50:34,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:50:34,025 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46830901, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:50:34,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 15:50:34,041 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) [2022-11-23 15:50:34,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-11-23 15:50:34,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:50:34,094 INFO L195 NwaCegarLoop]: 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] [2022-11-23 15:50:34,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:50:34,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:50:34,102 INFO L85 PathProgramCache]: Analyzing trace with hash -2063183771, now seen corresponding path program 1 times [2022-11-23 15:50:34,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:50:34,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032756004] [2022-11-23 15:50:34,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:34,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:50:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5115 trivial. 0 not checked. [2022-11-23 15:50:35,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:50:35,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032756004] [2022-11-23 15:50:35,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032756004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:50:35,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:50:35,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:50:35,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519012491] [2022-11-23 15:50:35,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:50:35,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:50:35,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:50:36,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:50:36,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:50:36,018 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) [2022-11-23 15:50:39,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:42,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:50:42,916 INFO L93 Difference]: Finished difference Result 5880 states and 8673 transitions. [2022-11-23 15:50:42,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:50:42,919 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 [2022-11-23 15:50:42,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:50:42,972 INFO L225 Difference]: With dead ends: 5880 [2022-11-23 15:50:42,973 INFO L226 Difference]: Without dead ends: 3902 [2022-11-23 15:50:42,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:50:42,996 INFO L413 NwaCegarLoop]: 3208 mSDtfsCounter, 2768 mSDsluCounter, 2498 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2768 SdHoareTripleChecker+Valid, 5706 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:50:42,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2768 Valid, 5706 Invalid, 923 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 909 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-23 15:50:43,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2022-11-23 15:50:43,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3898. [2022-11-23 15:50:43,405 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, (1285), 1285 states have call predecessors, (1285), 1285 states have call successors, (1285) [2022-11-23 15:50:43,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 5691 transitions. [2022-11-23 15:50:43,454 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 5691 transitions. Word has length 385 [2022-11-23 15:50:43,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:50:43,462 INFO L495 AbstractCegarLoop]: Abstraction has 3898 states and 5691 transitions. [2022-11-23 15:50:43,462 INFO L496 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) [2022-11-23 15:50:43,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 5691 transitions. [2022-11-23 15:50:43,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-11-23 15:50:43,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:50:43,497 INFO L195 NwaCegarLoop]: 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] [2022-11-23 15:50:43,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:50:43,503 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:50:43,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:50:43,504 INFO L85 PathProgramCache]: Analyzing trace with hash -388958198, now seen corresponding path program 1 times [2022-11-23 15:50:43,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:50:43,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404689054] [2022-11-23 15:50:43,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:43,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:50:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2022-11-23 15:50:44,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:50:44,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404689054] [2022-11-23 15:50:44,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404689054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:50:44,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:50:44,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:50:44,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315823849] [2022-11-23 15:50:44,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:50:44,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:50:44,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:50:44,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:50:44,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:50:44,773 INFO L87 Difference]: Start difference. First operand 3898 states and 5691 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) [2022-11-23 15:50:48,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:51,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:50:51,532 INFO L93 Difference]: Finished difference Result 9573 states and 13957 transitions. [2022-11-23 15:50:51,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:50:51,533 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 [2022-11-23 15:50:51,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:50:51,583 INFO L225 Difference]: With dead ends: 9573 [2022-11-23 15:50:51,583 INFO L226 Difference]: Without dead ends: 5748 [2022-11-23 15:50:51,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:50:51,609 INFO L413 NwaCegarLoop]: 3198 mSDtfsCounter, 2734 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2734 SdHoareTripleChecker+Valid, 5691 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:50:51,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2734 Valid, 5691 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 911 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-23 15:50:51,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5748 states. [2022-11-23 15:50:51,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5748 to 5722. [2022-11-23 15:50:51,999 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, (1865), 1860 states have call predecessors, (1865), 1865 states have call successors, (1865) [2022-11-23 15:50:52,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5722 states to 5722 states and 8322 transitions. [2022-11-23 15:50:52,045 INFO L78 Accepts]: Start accepts. Automaton has 5722 states and 8322 transitions. Word has length 423 [2022-11-23 15:50:52,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:50:52,048 INFO L495 AbstractCegarLoop]: Abstraction has 5722 states and 8322 transitions. [2022-11-23 15:50:52,049 INFO L496 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) [2022-11-23 15:50:52,049 INFO L276 IsEmpty]: Start isEmpty. Operand 5722 states and 8322 transitions. [2022-11-23 15:50:52,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2022-11-23 15:50:52,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:50:52,067 INFO L195 NwaCegarLoop]: 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] [2022-11-23 15:50:52,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:50:52,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:50:52,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:50:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash -672632507, now seen corresponding path program 1 times [2022-11-23 15:50:52,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:50:52,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28505383] [2022-11-23 15:50:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:52,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:50:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2022-11-23 15:50:53,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:50:53,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28505383] [2022-11-23 15:50:53,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28505383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:50:53,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:50:53,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:50:53,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645982145] [2022-11-23 15:50:53,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:50:53,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:50:53,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:50:53,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:50:53,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:50:53,093 INFO L87 Difference]: Start difference. First operand 5722 states and 8322 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) [2022-11-23 15:50:56,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:00,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:51:00,461 INFO L93 Difference]: Finished difference Result 15045 states and 21860 transitions. [2022-11-23 15:51:00,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:51:00,462 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 [2022-11-23 15:51:00,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:51:00,564 INFO L225 Difference]: With dead ends: 15045 [2022-11-23 15:51:00,565 INFO L226 Difference]: Without dead ends: 9396 [2022-11-23 15:51:00,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:51:00,617 INFO L413 NwaCegarLoop]: 3234 mSDtfsCounter, 2732 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2732 SdHoareTripleChecker+Valid, 5727 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:51:00,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2732 Valid, 5727 Invalid, 938 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 924 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-23 15:51:00,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9396 states. [2022-11-23 15:51:01,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9396 to 9370. [2022-11-23 15:51:01,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9370 states, 5764 states have (on average 1.306384455239417) internal successors, (7530), 5789 states have internal predecessors, (7530), 3029 states have call successors, (3029), 575 states have call predecessors, (3029), 574 states have return successors, (3025), 3010 states have call predecessors, (3025), 3025 states have call successors, (3025) [2022-11-23 15:51:01,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9370 states to 9370 states and 13584 transitions. [2022-11-23 15:51:01,415 INFO L78 Accepts]: Start accepts. Automaton has 9370 states and 13584 transitions. Word has length 425 [2022-11-23 15:51:01,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:51:01,417 INFO L495 AbstractCegarLoop]: Abstraction has 9370 states and 13584 transitions. [2022-11-23 15:51:01,418 INFO L496 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) [2022-11-23 15:51:01,418 INFO L276 IsEmpty]: Start isEmpty. Operand 9370 states and 13584 transitions. [2022-11-23 15:51:01,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2022-11-23 15:51:01,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:51:01,436 INFO L195 NwaCegarLoop]: 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] [2022-11-23 15:51:01,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:51:01,437 INFO L420 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)] === [2022-11-23 15:51:01,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:51:01,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1175912027, now seen corresponding path program 1 times [2022-11-23 15:51:01,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:51:01,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294536791] [2022-11-23 15:51:01,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:51:01,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:51:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:51:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2022-11-23 15:51:02,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:51:02,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294536791] [2022-11-23 15:51:02,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294536791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:51:02,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:51:02,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:51:02,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394436678] [2022-11-23 15:51:02,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:51:02,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:51:02,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:51:02,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:51:02,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:51:02,345 INFO L87 Difference]: Start difference. First operand 9370 states and 13584 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) [2022-11-23 15:51:07,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:09,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:51:09,235 INFO L93 Difference]: Finished difference Result 27510 states and 39870 transitions. [2022-11-23 15:51:09,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:51:09,236 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 [2022-11-23 15:51:09,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:51:09,396 INFO L225 Difference]: With dead ends: 27510 [2022-11-23 15:51:09,397 INFO L226 Difference]: Without dead ends: 18213 [2022-11-23 15:51:09,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:51:09,692 INFO L413 NwaCegarLoop]: 3296 mSDtfsCounter, 2689 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2689 SdHoareTripleChecker+Valid, 5793 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:51:09,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2689 Valid, 5793 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 944 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-23 15:51:09,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18213 states. [2022-11-23 15:51:11,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18213 to 18179. [2022-11-23 15:51:11,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18179 states, 11213 states have (on average 1.3037545705877107) internal successors, (14619), 11271 states have internal predecessors, (14619), 5842 states have call successors, (5842), 1122 states have call predecessors, (5842), 1121 states have return successors, (5838), 5795 states have call predecessors, (5838), 5838 states have call successors, (5838) [2022-11-23 15:51:11,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18179 states to 18179 states and 26299 transitions. [2022-11-23 15:51:11,257 INFO L78 Accepts]: Start accepts. Automaton has 18179 states and 26299 transitions. Word has length 431 [2022-11-23 15:51:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:51:11,259 INFO L495 AbstractCegarLoop]: Abstraction has 18179 states and 26299 transitions. [2022-11-23 15:51:11,259 INFO L496 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) [2022-11-23 15:51:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 18179 states and 26299 transitions. [2022-11-23 15:51:11,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-11-23 15:51:11,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:51:11,278 INFO L195 NwaCegarLoop]: 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] [2022-11-23 15:51:11,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:51:11,278 INFO L420 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)] === [2022-11-23 15:51:11,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:51:11,279 INFO L85 PathProgramCache]: Analyzing trace with hash 9922834, now seen corresponding path program 1 times [2022-11-23 15:51:11,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:51:11,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952661744] [2022-11-23 15:51:11,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:51:11,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:51:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:51:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2022-11-23 15:51:12,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:51:12,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952661744] [2022-11-23 15:51:12,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952661744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:51:12,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:51:12,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:51:12,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440534732] [2022-11-23 15:51:12,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:51:12,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:51:12,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:51:12,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:51:12,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:51:12,358 INFO L87 Difference]: Start difference. First operand 18179 states and 26299 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) [2022-11-23 15:51:15,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:19,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:51:19,593 INFO L93 Difference]: Finished difference Result 49251 states and 71259 transitions. [2022-11-23 15:51:19,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:51:19,594 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 [2022-11-23 15:51:19,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:51:19,823 INFO L225 Difference]: With dead ends: 49251 [2022-11-23 15:51:19,823 INFO L226 Difference]: Without dead ends: 31145 [2022-11-23 15:51:19,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:51:19,919 INFO L413 NwaCegarLoop]: 3426 mSDtfsCounter, 2733 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2733 SdHoareTripleChecker+Valid, 5919 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:51:19,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2733 Valid, 5919 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 985 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-11-23 15:51:19,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31145 states. [2022-11-23 15:51:22,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31145 to 31117. [2022-11-23 15:51:22,806 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, (9933), 9842 states have call predecessors, (9933), 9933 states have call successors, (9933) [2022-11-23 15:51:23,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31117 states to 31117 states and 44934 transitions. [2022-11-23 15:51:23,185 INFO L78 Accepts]: Start accepts. Automaton has 31117 states and 44934 transitions. Word has length 424 [2022-11-23 15:51:23,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:51:23,186 INFO L495 AbstractCegarLoop]: Abstraction has 31117 states and 44934 transitions. [2022-11-23 15:51:23,186 INFO L496 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) [2022-11-23 15:51:23,187 INFO L276 IsEmpty]: Start isEmpty. Operand 31117 states and 44934 transitions. [2022-11-23 15:51:23,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-11-23 15:51:23,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:51:23,207 INFO L195 NwaCegarLoop]: 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] [2022-11-23 15:51:23,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:51:23,208 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:51:23,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:51:23,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1575766614, now seen corresponding path program 1 times [2022-11-23 15:51:23,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:51:23,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753240973] [2022-11-23 15:51:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:51:23,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:51:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:51:25,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5374 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2022-11-23 15:51:25,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:51:25,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753240973] [2022-11-23 15:51:25,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753240973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:51:25,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:51:25,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:51:25,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336203136] [2022-11-23 15:51:25,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:51:25,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:51:25,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:51:25,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:51:25,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:51:25,463 INFO L87 Difference]: Start difference. First operand 31117 states and 44934 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) [2022-11-23 15:51:29,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:36,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:51:36,696 INFO L93 Difference]: Finished difference Result 59367 states and 85751 transitions. [2022-11-23 15:51:36,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:51:36,697 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 [2022-11-23 15:51:36,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:51:37,364 INFO L225 Difference]: With dead ends: 59367 [2022-11-23 15:51:37,365 INFO L226 Difference]: Without dead ends: 59365 [2022-11-23 15:51:37,395 INFO L412 NwaCegarLoop]: 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 [2022-11-23 15:51:37,397 INFO L413 NwaCegarLoop]: 3564 mSDtfsCounter, 2846 mSDsluCounter, 9524 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2856 SdHoareTripleChecker+Valid, 13088 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:51:37,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2856 Valid, 13088 Invalid, 2112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2110 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-11-23 15:51:37,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59365 states. [2022-11-23 15:51:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59365 to 59359. [2022-11-23 15:51:42,005 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, (18964), 18784 states have call predecessors, (18964), 18964 states have call successors, (18964) [2022-11-23 15:51:42,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59359 states to 59359 states and 85746 transitions. [2022-11-23 15:51:42,787 INFO L78 Accepts]: Start accepts. Automaton has 59359 states and 85746 transitions. Word has length 432 [2022-11-23 15:51:42,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:51:42,789 INFO L495 AbstractCegarLoop]: Abstraction has 59359 states and 85746 transitions. [2022-11-23 15:51:42,789 INFO L496 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) [2022-11-23 15:51:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 59359 states and 85746 transitions. [2022-11-23 15:51:42,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-11-23 15:51:42,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:51:42,807 INFO L195 NwaCegarLoop]: 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] [2022-11-23 15:51:42,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:51:42,808 INFO L420 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)] === [2022-11-23 15:51:42,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:51:42,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1124397153, now seen corresponding path program 1 times [2022-11-23 15:51:42,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:51:42,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462613434] [2022-11-23 15:51:42,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:51:42,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:51:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:51:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5377 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5375 trivial. 0 not checked. [2022-11-23 15:51:44,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:51:44,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462613434] [2022-11-23 15:51:44,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462613434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:51:44,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:51:44,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:51:44,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872534342] [2022-11-23 15:51:44,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:51:44,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:51:44,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:51:44,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:51:44,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:51:44,826 INFO L87 Difference]: Start difference. First operand 59359 states and 85746 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) [2022-11-23 15:51:49,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:58,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:51:58,051 INFO L93 Difference]: Finished difference Result 87532 states and 126357 transitions. [2022-11-23 15:51:58,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:51:58,052 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 [2022-11-23 15:51:58,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:51:58,916 INFO L225 Difference]: With dead ends: 87532 [2022-11-23 15:51:58,917 INFO L226 Difference]: Without dead ends: 87530 [2022-11-23 15:51:58,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:51:58,965 INFO L413 NwaCegarLoop]: 3564 mSDtfsCounter, 2817 mSDsluCounter, 9503 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2826 SdHoareTripleChecker+Valid, 13067 SdHoareTripleChecker+Invalid, 2110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:51:58,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2826 Valid, 13067 Invalid, 2110 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2107 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-11-23 15:51:59,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87530 states. [2022-11-23 15:52:04,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87530 to 87511. [2022-11-23 15:52:04,631 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, (28003), 27656 states have call predecessors, (28003), 27940 states have call successors, (28003) [2022-11-23 15:52:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87511 states to 87511 states and 126337 transitions. [2022-11-23 15:52:05,506 INFO L78 Accepts]: Start accepts. Automaton has 87511 states and 126337 transitions. Word has length 438 [2022-11-23 15:52:05,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:52:05,507 INFO L495 AbstractCegarLoop]: Abstraction has 87511 states and 126337 transitions. [2022-11-23 15:52:05,508 INFO L496 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) [2022-11-23 15:52:05,508 INFO L276 IsEmpty]: Start isEmpty. Operand 87511 states and 126337 transitions. [2022-11-23 15:52:05,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2022-11-23 15:52:05,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:52:05,530 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:52:05,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:52:05,531 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:52:05,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:52:05,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1590644470, now seen corresponding path program 1 times [2022-11-23 15:52:05,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:52:05,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111100499] [2022-11-23 15:52:05,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:52:05,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:52:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:52:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5382 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5378 trivial. 0 not checked. [2022-11-23 15:52:07,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:52:07,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111100499] [2022-11-23 15:52:07,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111100499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:52:07,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:52:07,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:52:07,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6295494] [2022-11-23 15:52:07,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:52:07,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:52:07,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:52:07,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:52:07,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:52:07,470 INFO L87 Difference]: Start difference. First operand 87511 states and 126337 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, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-23 15:52:11,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:20,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:52:20,118 INFO L93 Difference]: Finished difference Result 87523 states and 126345 transitions. [2022-11-23 15:52:20,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:52:20,119 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, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 442 [2022-11-23 15:52:20,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:52:20,963 INFO L225 Difference]: With dead ends: 87523 [2022-11-23 15:52:20,963 INFO L226 Difference]: Without dead ends: 87521 [2022-11-23 15:52:21,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:52:21,026 INFO L413 NwaCegarLoop]: 3568 mSDtfsCounter, 2843 mSDsluCounter, 9526 mSDsCounter, 0 mSdLazyCounter, 2117 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2851 SdHoareTripleChecker+Valid, 13094 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2117 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:52:21,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2851 Valid, 13094 Invalid, 2119 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2117 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2022-11-23 15:52:21,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87521 states. [2022-11-23 15:52:25,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87521 to 87515. [2022-11-23 15:52:26,031 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, (28003), 27656 states have call predecessors, (28003), 27940 states have call successors, (28003) [2022-11-23 15:52:26,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87515 states to 87515 states and 126340 transitions. [2022-11-23 15:52:26,524 INFO L78 Accepts]: Start accepts. Automaton has 87515 states and 126340 transitions. Word has length 442 [2022-11-23 15:52:26,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:52:26,526 INFO L495 AbstractCegarLoop]: Abstraction has 87515 states and 126340 transitions. [2022-11-23 15:52:26,526 INFO L496 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, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-23 15:52:26,526 INFO L276 IsEmpty]: Start isEmpty. Operand 87515 states and 126340 transitions. [2022-11-23 15:52:26,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-11-23 15:52:26,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:52:26,548 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:52:26,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:52:26,549 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:52:26,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:52:26,550 INFO L85 PathProgramCache]: Analyzing trace with hash -636089599, now seen corresponding path program 1 times [2022-11-23 15:52:26,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:52:26,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64364537] [2022-11-23 15:52:26,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:52:26,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:52:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:52:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5393 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5387 trivial. 0 not checked. [2022-11-23 15:52:28,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:52:28,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64364537] [2022-11-23 15:52:28,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64364537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:52:28,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:52:28,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:52:28,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637001921] [2022-11-23 15:52:28,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:52:28,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:52:28,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:52:28,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:52:28,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:52:28,434 INFO L87 Difference]: Start difference. First operand 87515 states and 126340 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, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-23 15:52:32,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:40,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:52:40,901 INFO L93 Difference]: Finished difference Result 87527 states and 126348 transitions. [2022-11-23 15:52:40,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:52:40,902 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, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 448 [2022-11-23 15:52:40,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:52:41,594 INFO L225 Difference]: With dead ends: 87527 [2022-11-23 15:52:41,594 INFO L226 Difference]: Without dead ends: 87525 [2022-11-23 15:52:41,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:52:41,637 INFO L413 NwaCegarLoop]: 3568 mSDtfsCounter, 2843 mSDsluCounter, 9526 mSDsCounter, 0 mSdLazyCounter, 2117 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2850 SdHoareTripleChecker+Valid, 13094 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2117 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:52:41,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2850 Valid, 13094 Invalid, 2119 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2117 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-11-23 15:52:41,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87525 states. [2022-11-23 15:52:45,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87525 to 87519. [2022-11-23 15:52:45,775 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, (28003), 27656 states have call predecessors, (28003), 27940 states have call successors, (28003) [2022-11-23 15:52:46,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87519 states to 87519 states and 126343 transitions. [2022-11-23 15:52:46,152 INFO L78 Accepts]: Start accepts. Automaton has 87519 states and 126343 transitions. Word has length 448 [2022-11-23 15:52:46,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:52:46,153 INFO L495 AbstractCegarLoop]: Abstraction has 87519 states and 126343 transitions. [2022-11-23 15:52:46,153 INFO L496 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, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-23 15:52:46,153 INFO L276 IsEmpty]: Start isEmpty. Operand 87519 states and 126343 transitions. [2022-11-23 15:52:46,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-11-23 15:52:46,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:52:46,173 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:52:46,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:52:46,174 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:52:46,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:52:46,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1070614329, now seen corresponding path program 1 times [2022-11-23 15:52:46,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:52:46,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967887062] [2022-11-23 15:52:46,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:52:46,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:52:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:52:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5405 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5397 trivial. 0 not checked. [2022-11-23 15:52:47,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:52:47,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967887062] [2022-11-23 15:52:47,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967887062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:52:47,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:52:47,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:52:47,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829332970] [2022-11-23 15:52:47,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:52:47,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:52:47,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:52:47,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:52:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:52:47,884 INFO L87 Difference]: Start difference. First operand 87519 states and 126343 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, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-23 15:52:52,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []