./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/bin/utaipan-eEHZpOm5b7/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_0af0a111-f3e2-4337-bbbc-6e0794ee1575/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6a79b35c65887feb0e3310d99b98c096a3638844b86132f83b5aa5c0d07bcad8 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:39:51,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:39:51,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:39:51,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:39:51,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:39:51,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:39:51,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:39:51,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:39:51,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:39:51,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:39:51,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:39:51,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:39:51,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:39:51,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:39:51,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:39:51,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:39:51,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:39:51,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:39:51,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:39:51,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:39:51,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:39:51,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:39:51,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:39:51,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:39:51,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:39:51,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:39:51,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:39:51,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:39:51,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:39:51,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:39:51,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:39:51,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:39:51,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:39:51,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:39:51,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:39:51,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:39:51,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:39:51,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:39:51,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:39:51,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:39:51,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:39:51,599 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:39:51,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:39:51,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:39:51,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:39:51,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:39:51,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:39:51,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:39:51,626 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:39:51,627 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:39:51,627 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:39:51,627 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:39:51,628 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:39:51,628 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:39:51,629 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:39:51,629 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:39:51,629 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:39:51,630 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:39:51,630 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:39:51,630 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:39:51,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:39:51,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:39:51,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:39:51,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:39:51,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:39:51,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:39:51,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:39:51,634 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:39:51,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:39:51,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:39:51,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:39:51,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:39:51,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:39:51,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:39:51,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:39:51,637 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:39:51,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:39:51,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:39:51,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:39:51,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:39:51,638 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a79b35c65887feb0e3310d99b98c096a3638844b86132f83b5aa5c0d07bcad8 [2021-11-25 19:39:51,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:39:51,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:39:51,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:39:51,901 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:39:51,902 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:39:51,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2021-11-25 19:39:51,993 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/bin/utaipan-eEHZpOm5b7/data/5ceb7f149/5cd694cb6d5f4a2f984e2e9ee99f3676/FLAG3f71c0511 [2021-11-25 19:39:53,097 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:39:53,097 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2021-11-25 19:39:53,164 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/bin/utaipan-eEHZpOm5b7/data/5ceb7f149/5cd694cb6d5f4a2f984e2e9ee99f3676/FLAG3f71c0511 [2021-11-25 19:39:53,322 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/bin/utaipan-eEHZpOm5b7/data/5ceb7f149/5cd694cb6d5f4a2f984e2e9ee99f3676 [2021-11-25 19:39:53,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:39:53,326 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:39:53,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:39:53,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:39:53,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:39:53,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:39:53" (1/1) ... [2021-11-25 19:39:53,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9bc664a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:39:53, skipping insertion in model container [2021-11-25 19:39:53,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:39:53" (1/1) ... [2021-11-25 19:39:53,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:39:53,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:39:57,562 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490366,490379] [2021-11-25 19:39:57,566 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490535,490548] [2021-11-25 19:39:57,567 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490702,490715] [2021-11-25 19:39:57,567 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490870,490883] [2021-11-25 19:39:57,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:39:57,707 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:39:58,194 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490366,490379] [2021-11-25 19:39:58,194 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490535,490548] [2021-11-25 19:39:58,195 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490702,490715] [2021-11-25 19:39:58,195 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490870,490883] [2021-11-25 19:39:58,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:39:58,503 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:39:58,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:39:58 WrapperNode [2021-11-25 19:39:58,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:39:58,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:39:58,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:39:58,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:39:58,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:39:58" (1/1) ... [2021-11-25 19:39:58,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:39:58" (1/1) ... [2021-11-25 19:39:58,928 INFO L137 Inliner]: procedures = 473, calls = 4636, calls flagged for inlining = 228, calls inlined = 198, statements flattened = 8920 [2021-11-25 19:39:58,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:39:58,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:39:58,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:39:58,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:39:58,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:39:58" (1/1) ... [2021-11-25 19:39:58,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:39:58" (1/1) ... [2021-11-25 19:39:59,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:39:58" (1/1) ... [2021-11-25 19:39:59,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:39:58" (1/1) ... [2021-11-25 19:39:59,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:39:58" (1/1) ... [2021-11-25 19:39:59,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:39:58" (1/1) ... [2021-11-25 19:39:59,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:39:58" (1/1) ... [2021-11-25 19:39:59,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:39:59,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:39:59,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:39:59,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:39:59,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:39:58" (1/1) ... [2021-11-25 19:39:59,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:39:59,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:39:59,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:39:59,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af0a111-f3e2-4337-bbbc-6e0794ee1575/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:39:59,461 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_reset [2021-11-25 19:39:59,461 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_reset [2021-11-25 19:39:59,462 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-11-25 19:39:59,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-11-25 19:39:59,462 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_stop [2021-11-25 19:39:59,462 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_stop [2021-11-25 19:39:59,462 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_config_parameter_str [2021-11-25 19:39:59,462 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_config_parameter_str [2021-11-25 19:39:59,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 19:39:59,462 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 19:39:59,463 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_inform_bss [2021-11-25 19:39:59,463 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_inform_bss [2021-11-25 19:39:59,463 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_pause_rx [2021-11-25 19:39:59,463 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_pause_rx [2021-11-25 19:39:59,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:39:59,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:39:59,463 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_tx_fixup [2021-11-25 19:39:59,464 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_tx_fixup [2021-11-25 19:39:59,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:39:59,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:39:59,464 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_bind [2021-11-25 19:39:59,464 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_bind [2021-11-25 19:39:59,464 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_set_multicast_list [2021-11-25 19:39:59,464 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_set_multicast_list [2021-11-25 19:39:59,464 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_purge_paused_rxq [2021-11-25 19:39:59,465 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_purge_paused_rxq [2021-11-25 19:39:59,465 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_unbind [2021-11-25 19:39:59,465 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_unbind [2021-11-25 19:39:59,465 INFO L130 BoogieDeclarations]: Found specification of procedure set_encr_mode [2021-11-25 19:39:59,465 INFO L138 BoogieDeclarations]: Found implementation of procedure set_encr_mode [2021-11-25 19:39:59,465 INFO L130 BoogieDeclarations]: Found specification of procedure get_rndis_wlan_priv [2021-11-25 19:39:59,465 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rndis_wlan_priv [2021-11-25 19:39:59,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 19:39:59,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 19:39:59,466 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2021-11-25 19:39:59,466 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2021-11-25 19:39:59,466 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 19:39:59,466 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 19:39:59,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 19:39:59,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 19:39:59,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:39:59,467 INFO L130 BoogieDeclarations]: Found specification of procedure set_infra_mode [2021-11-25 19:39:59,467 INFO L138 BoogieDeclarations]: Found implementation of procedure set_infra_mode [2021-11-25 19:39:59,467 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_command [2021-11-25 19:39:59,467 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_command [2021-11-25 19:39:59,467 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_scan_done [2021-11-25 19:39:59,467 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_scan_done [2021-11-25 19:39:59,467 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-25 19:39:59,468 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-25 19:39:59,468 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 19:39:59,468 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 19:39:59,468 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_fill_station_info [2021-11-25 19:39:59,468 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_fill_station_info [2021-11-25 19:39:59,468 INFO L130 BoogieDeclarations]: Found specification of procedure unknown_early_init [2021-11-25 19:39:59,468 INFO L138 BoogieDeclarations]: Found implementation of procedure unknown_early_init [2021-11-25 19:39:59,468 INFO L130 BoogieDeclarations]: Found specification of procedure disassociate [2021-11-25 19:39:59,469 INFO L138 BoogieDeclarations]: Found implementation of procedure disassociate [2021-11-25 19:39:59,469 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-25 19:39:59,469 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-25 19:39:59,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:39:59,469 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_query_oid [2021-11-25 19:39:59,469 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_query_oid [2021-11-25 19:39:59,469 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2021-11-25 19:39:59,469 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2021-11-25 19:39:59,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:39:59,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 19:39:59,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 19:39:59,470 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2021-11-25 19:39:59,470 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2021-11-25 19:39:59,470 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_free [2021-11-25 19:39:59,470 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_free [2021-11-25 19:39:59,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:39:59,470 INFO L130 BoogieDeclarations]: Found specification of procedure is_wpa_key [2021-11-25 19:39:59,471 INFO L138 BoogieDeclarations]: Found implementation of procedure is_wpa_key [2021-11-25 19:39:59,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:39:59,471 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:39:59,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 19:39:59,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 19:39:59,471 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_priv [2021-11-25 19:39:59,471 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_priv [2021-11-25 19:39:59,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 19:39:59,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 19:39:59,472 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_check_bssid_list [2021-11-25 19:39:59,472 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_check_bssid_list [2021-11-25 19:39:59,472 INFO L130 BoogieDeclarations]: Found specification of procedure __toupper [2021-11-25 19:39:59,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __toupper [2021-11-25 19:39:59,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:39:59,472 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320b_early_init [2021-11-25 19:39:59,472 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320b_early_init [2021-11-25 19:39:59,473 INFO L130 BoogieDeclarations]: Found specification of procedure set_channel [2021-11-25 19:39:59,473 INFO L138 BoogieDeclarations]: Found implementation of procedure set_channel [2021-11-25 19:39:59,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 19:39:59,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 19:39:59,473 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_status [2021-11-25 19:39:59,473 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_status [2021-11-25 19:39:59,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 19:39:59,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 19:39:59,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:39:59,474 INFO L130 BoogieDeclarations]: Found specification of procedure level_to_qual [2021-11-25 19:39:59,474 INFO L138 BoogieDeclarations]: Found implementation of procedure level_to_qual [2021-11-25 19:39:59,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 19:39:59,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 19:39:59,474 INFO L130 BoogieDeclarations]: Found specification of procedure set_essid [2021-11-25 19:39:59,474 INFO L138 BoogieDeclarations]: Found implementation of procedure set_essid [2021-11-25 19:39:59,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:39:59,475 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_put_bss [2021-11-25 19:39:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_put_bss [2021-11-25 19:39:59,475 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_start_bssid_list_scan [2021-11-25 19:39:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_start_bssid_list_scan [2021-11-25 19:39:59,475 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:39:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:39:59,475 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2021-11-25 19:39:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2021-11-25 19:39:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_copy_module_params [2021-11-25 19:39:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_copy_module_params [2021-11-25 19:39:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 19:39:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 19:39:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure set_auth_mode [2021-11-25 19:39:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure set_auth_mode [2021-11-25 19:39:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-25 19:39:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-25 19:39:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 19:39:59,477 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 19:39:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:39:59,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:39:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 19:39:59,477 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 19:39:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-25 19:39:59,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-25 19:39:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:39:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:39:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:39:59,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:39:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-25 19:39:59,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-25 19:39:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-25 19:39:59,478 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-25 19:39:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_cipher_to_alg [2021-11-25 19:39:59,478 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_cipher_to_alg [2021-11-25 19:39:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:39:59,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:39:59,479 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 19:39:59,479 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 19:39:59,479 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_channel [2021-11-25 19:39:59,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_channel [2021-11-25 19:39:59,479 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-25 19:39:59,479 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-25 19:39:59,479 INFO L130 BoogieDeclarations]: Found specification of procedure add_wep_key [2021-11-25 19:39:59,479 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wep_key [2021-11-25 19:39:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2021-11-25 19:39:59,480 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2021-11-25 19:39:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure is_broadcast_ether_addr [2021-11-25 19:39:59,480 INFO L138 BoogieDeclarations]: Found implementation of procedure is_broadcast_ether_addr [2021-11-25 19:39:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 19:39:59,480 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 19:39:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure set_bssid [2021-11-25 19:39:59,480 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bssid [2021-11-25 19:39:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:39:59,481 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:39:59,481 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-25 19:39:59,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-25 19:39:59,481 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-25 19:39:59,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-25 19:39:59,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:39:59,481 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 19:39:59,481 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 19:39:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bssid [2021-11-25 19:39:59,482 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bssid [2021-11-25 19:39:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:39:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure set_device_pmkids [2021-11-25 19:39:59,482 INFO L138 BoogieDeclarations]: Found implementation of procedure set_device_pmkids [2021-11-25 19:39:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure get_device_pmkids [2021-11-25 19:39:59,482 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device_pmkids [2021-11-25 19:39:59,482 INFO L130 BoogieDeclarations]: Found specification of procedure netif_addr_unlock_bh [2021-11-25 19:39:59,482 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_addr_unlock_bh [2021-11-25 19:39:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-25 19:39:59,483 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-25 19:39:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:39:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure next_bssid_list_item [2021-11-25 19:39:59,483 INFO L138 BoogieDeclarations]: Found implementation of procedure next_bssid_list_item [2021-11-25 19:39:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 19:39:59,483 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 19:39:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure set_priv_filter [2021-11-25 19:39:59,483 INFO L138 BoogieDeclarations]: Found implementation of procedure set_priv_filter [2021-11-25 19:39:59,484 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 19:39:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 19:39:59,484 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 19:39:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 19:39:59,484 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_wiphy_params [2021-11-25 19:39:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_wiphy_params [2021-11-25 19:39:59,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 19:39:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 19:39:59,484 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 19:39:59,485 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 19:39:59,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_7_4 [2021-11-25 19:39:59,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_7_4 [2021-11-25 19:39:59,485 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-25 19:39:59,485 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-25 19:39:59,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 19:39:59,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 19:39:59,485 INFO L130 BoogieDeclarations]: Found specification of procedure oid_to_string [2021-11-25 19:39:59,486 INFO L138 BoogieDeclarations]: Found implementation of procedure oid_to_string [2021-11-25 19:39:59,486 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2021-11-25 19:39:59,486 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2021-11-25 19:39:59,486 INFO L130 BoogieDeclarations]: Found specification of procedure deauthenticate [2021-11-25 19:39:59,486 INFO L138 BoogieDeclarations]: Found implementation of procedure deauthenticate [2021-11-25 19:39:59,486 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 19:39:59,486 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 19:39:59,486 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320a_early_init [2021-11-25 19:39:59,486 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320a_early_init [2021-11-25 19:39:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_michael_mic_failure [2021-11-25 19:39:59,487 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_michael_mic_failure [2021-11-25 19:39:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure set_default_iw_params [2021-11-25 19:39:59,487 INFO L138 BoogieDeclarations]: Found implementation of procedure set_default_iw_params [2021-11-25 19:39:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:39:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_error_status [2021-11-25 19:39:59,487 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_error_status [2021-11-25 19:39:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:39:59,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:39:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume_rx [2021-11-25 19:39:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume_rx [2021-11-25 19:39:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2021-11-25 19:39:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2021-11-25 19:39:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-25 19:39:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-25 19:39:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcm4320_power_dbm [2021-11-25 19:39:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcm4320_power_dbm [2021-11-25 19:39:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 19:39:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 19:39:59,489 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 19:39:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 19:39:59,489 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_rx_fixup [2021-11-25 19:39:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_rx_fixup [2021-11-25 19:39:59,489 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_oid [2021-11-25 19:39:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_oid [2021-11-25 19:39:59,489 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_indication [2021-11-25 19:39:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_indication [2021-11-25 19:39:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure get_bssid [2021-11-25 19:39:59,490 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bssid [2021-11-25 19:39:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure is_associated [2021-11-25 19:39:59,490 INFO L138 BoogieDeclarations]: Found implementation of procedure is_associated [2021-11-25 19:39:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-25 19:39:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:39:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-25 19:39:59,490 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-25 19:39:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure debug_print_pmkids [2021-11-25 19:39:59,491 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_print_pmkids [2021-11-25 19:39:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 19:39:59,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 19:40:00,515 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:40:00,523 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:40:01,083 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:40:19,994 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 19:40:20,261 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:40:21,624 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:40:21,624 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:40:21,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:40:21 BoogieIcfgContainer [2021-11-25 19:40:21,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:40:21,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:40:21,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:40:21,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:40:21,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:39:53" (1/3) ... [2021-11-25 19:40:21,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f32ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:40:21, skipping insertion in model container [2021-11-25 19:40:21,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:39:58" (2/3) ... [2021-11-25 19:40:21,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f32ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:40:21, skipping insertion in model container [2021-11-25 19:40:21,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:40:21" (3/3) ... [2021-11-25 19:40:21,642 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2021-11-25 19:40:21,653 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:40:21,653 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 19:40:21,736 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:40:21,750 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:40:21,760 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 19:40:21,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 2039 states, 1232 states have (on average 1.3133116883116882) internal successors, (1618), 1236 states have internal predecessors, (1618), 689 states have call successors, (689), 116 states have call predecessors, (689), 115 states have return successors, (681), 681 states have call predecessors, (681), 681 states have call successors, (681) [2021-11-25 19:40:21,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2021-11-25 19:40:21,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:40:21,884 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:40:21,884 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:40:21,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:40:21,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1193229731, now seen corresponding path program 1 times [2021-11-25 19:40:21,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:40:21,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481539037] [2021-11-25 19:40:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:40:21,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:40:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:40:23,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5115 trivial. 0 not checked. [2021-11-25 19:40:23,152 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:40:23,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481539037] [2021-11-25 19:40:23,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481539037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:40:23,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:40:23,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:40:23,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033420634] [2021-11-25 19:40:23,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:40:23,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:40:23,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:40:23,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:40:23,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:40:23,202 INFO L87 Difference]: Start difference. First operand has 2039 states, 1232 states have (on average 1.3133116883116882) internal successors, (1618), 1236 states have internal predecessors, (1618), 689 states have call successors, (689), 116 states have call predecessors, (689), 115 states have return successors, (681), 681 states have call predecessors, (681), 681 states have call successors, (681) Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-25 19:40:26,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:29,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:31,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:32,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:40:32,934 INFO L93 Difference]: Finished difference Result 5880 states and 8680 transitions. [2021-11-25 19:40:32,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:40:32,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 385 [2021-11-25 19:40:32,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:40:32,994 INFO L225 Difference]: With dead ends: 5880 [2021-11-25 19:40:32,994 INFO L226 Difference]: Without dead ends: 3902 [2021-11-25 19:40:33,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:40:33,024 INFO L933 BasicCegarLoop]: 3209 mSDtfsCounter, 2766 mSDsluCounter, 2913 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2773 SdHoareTripleChecker+Valid, 5705 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:40:33,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2773 Valid, 5705 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 909 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2021-11-25 19:40:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2021-11-25 19:40:33,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3898. [2021-11-25 19:40:33,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3898 states, 2380 states have (on average 1.3096638655462185) internal successors, (3117), 2387 states have internal predecessors, (3117), 1289 states have call successors, (1289), 227 states have call predecessors, (1289), 226 states have return successors, (1292), 1285 states have call predecessors, (1292), 1285 states have call successors, (1292) [2021-11-25 19:40:33,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 5698 transitions. [2021-11-25 19:40:33,457 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 5698 transitions. Word has length 385 [2021-11-25 19:40:33,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:40:33,463 INFO L470 AbstractCegarLoop]: Abstraction has 3898 states and 5698 transitions. [2021-11-25 19:40:33,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-25 19:40:33,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 5698 transitions. [2021-11-25 19:40:33,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2021-11-25 19:40:33,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:40:33,496 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:40:33,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:40:33,497 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:40:33,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:40:33,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1790696617, now seen corresponding path program 1 times [2021-11-25 19:40:33,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:40:33,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477131697] [2021-11-25 19:40:33,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:40:33,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:40:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:40:34,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-25 19:40:34,132 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:40:34,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477131697] [2021-11-25 19:40:34,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477131697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:40:34,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:40:34,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:40:34,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030860882] [2021-11-25 19:40:34,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:40:34,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:40:34,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:40:34,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:40:34,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:40:34,139 INFO L87 Difference]: Start difference. First operand 3898 states and 5698 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-25 19:40:37,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:39,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:42,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:44,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:40:44,027 INFO L93 Difference]: Finished difference Result 9573 states and 13978 transitions. [2021-11-25 19:40:44,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:40:44,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 423 [2021-11-25 19:40:44,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:40:44,098 INFO L225 Difference]: With dead ends: 9573 [2021-11-25 19:40:44,098 INFO L226 Difference]: Without dead ends: 5748 [2021-11-25 19:40:44,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:40:44,133 INFO L933 BasicCegarLoop]: 3196 mSDtfsCounter, 2732 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2739 SdHoareTripleChecker+Valid, 5687 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:40:44,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2739 Valid, 5687 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 911 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2021-11-25 19:40:44,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5748 states. [2021-11-25 19:40:44,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5748 to 5722. [2021-11-25 19:40:44,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5722 states, 3508 states have (on average 1.3078677309007982) internal successors, (4588), 3521 states have internal predecessors, (4588), 1869 states have call successors, (1869), 343 states have call predecessors, (1869), 342 states have return successors, (1879), 1860 states have call predecessors, (1879), 1865 states have call successors, (1879) [2021-11-25 19:40:44,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5722 states to 5722 states and 8336 transitions. [2021-11-25 19:40:44,696 INFO L78 Accepts]: Start accepts. Automaton has 5722 states and 8336 transitions. Word has length 423 [2021-11-25 19:40:44,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:40:44,700 INFO L470 AbstractCegarLoop]: Abstraction has 5722 states and 8336 transitions. [2021-11-25 19:40:44,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-25 19:40:44,701 INFO L276 IsEmpty]: Start isEmpty. Operand 5722 states and 8336 transitions. [2021-11-25 19:40:44,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-11-25 19:40:44,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:40:44,723 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:40:44,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:40:44,724 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:40:44,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:40:44,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1404737944, now seen corresponding path program 1 times [2021-11-25 19:40:44,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:40:44,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527482739] [2021-11-25 19:40:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:40:44,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:40:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:40:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-25 19:40:45,340 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:40:45,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527482739] [2021-11-25 19:40:45,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527482739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:40:45,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:40:45,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:40:45,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711781673] [2021-11-25 19:40:45,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:40:45,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:40:45,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:40:45,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:40:45,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:40:45,345 INFO L87 Difference]: Start difference. First operand 5722 states and 8336 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-25 19:40:49,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:51,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:53,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:40:55,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:40:55,047 INFO L93 Difference]: Finished difference Result 16754 states and 24405 transitions. [2021-11-25 19:40:55,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:40:55,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 431 [2021-11-25 19:40:55,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:40:55,165 INFO L225 Difference]: With dead ends: 16754 [2021-11-25 19:40:55,166 INFO L226 Difference]: Without dead ends: 11105 [2021-11-25 19:40:55,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:40:55,212 INFO L933 BasicCegarLoop]: 3231 mSDtfsCounter, 2687 mSDsluCounter, 2916 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 5726 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:40:55,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2694 Valid, 5726 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 920 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2021-11-25 19:40:55,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11105 states. [2021-11-25 19:40:55,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11105 to 11075. [2021-11-25 19:40:55,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11075 states, 6813 states have (on average 1.3058858065463086) internal successors, (8897), 6843 states have internal predecessors, (8897), 3590 states have call successors, (3590), 670 states have call predecessors, (3590), 669 states have return successors, (3621), 3567 states have call predecessors, (3621), 3586 states have call successors, (3621) [2021-11-25 19:40:55,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11075 states to 11075 states and 16108 transitions. [2021-11-25 19:40:55,975 INFO L78 Accepts]: Start accepts. Automaton has 11075 states and 16108 transitions. Word has length 431 [2021-11-25 19:40:55,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:40:55,977 INFO L470 AbstractCegarLoop]: Abstraction has 11075 states and 16108 transitions. [2021-11-25 19:40:55,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-25 19:40:55,978 INFO L276 IsEmpty]: Start isEmpty. Operand 11075 states and 16108 transitions. [2021-11-25 19:40:56,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2021-11-25 19:40:56,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:40:56,005 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:40:56,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:40:56,005 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:40:56,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:40:56,006 INFO L85 PathProgramCache]: Analyzing trace with hash -507529628, now seen corresponding path program 1 times [2021-11-25 19:40:56,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:40:56,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266998000] [2021-11-25 19:40:56,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:40:56,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:40:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:40:56,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-25 19:40:56,750 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:40:56,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266998000] [2021-11-25 19:40:56,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266998000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:40:56,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:40:56,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:40:56,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940731162] [2021-11-25 19:40:56,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:40:56,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:40:56,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:40:56,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:40:56,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:40:56,753 INFO L87 Difference]: Start difference. First operand 11075 states and 16108 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-25 19:41:00,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:02,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:05,002 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:06,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:41:06,665 INFO L93 Difference]: Finished difference Result 29089 states and 42252 transitions. [2021-11-25 19:41:06,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:41:06,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 424 [2021-11-25 19:41:06,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:41:06,826 INFO L225 Difference]: With dead ends: 29089 [2021-11-25 19:41:06,827 INFO L226 Difference]: Without dead ends: 18087 [2021-11-25 19:41:06,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:41:06,911 INFO L933 BasicCegarLoop]: 3232 mSDtfsCounter, 2731 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2738 SdHoareTripleChecker+Valid, 5723 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:41:06,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2738 Valid, 5723 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 925 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2021-11-25 19:41:06,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18087 states. [2021-11-25 19:41:08,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18087 to 18059. [2021-11-25 19:41:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18059 states, 11138 states have (on average 1.3036451786676244) internal successors, (14520), 11196 states have internal predecessors, (14520), 5800 states have call successors, (5800), 1119 states have call predecessors, (5800), 1118 states have return successors, (5838), 5753 states have call predecessors, (5838), 5796 states have call successors, (5838) [2021-11-25 19:41:08,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18059 states to 18059 states and 26158 transitions. [2021-11-25 19:41:08,228 INFO L78 Accepts]: Start accepts. Automaton has 18059 states and 26158 transitions. Word has length 424 [2021-11-25 19:41:08,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:41:08,229 INFO L470 AbstractCegarLoop]: Abstraction has 18059 states and 26158 transitions. [2021-11-25 19:41:08,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-25 19:41:08,230 INFO L276 IsEmpty]: Start isEmpty. Operand 18059 states and 26158 transitions. [2021-11-25 19:41:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2021-11-25 19:41:08,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:41:08,251 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:41:08,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:41:08,252 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:41:08,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:41:08,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1098935364, now seen corresponding path program 1 times [2021-11-25 19:41:08,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:41:08,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081245003] [2021-11-25 19:41:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:41:08,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:41:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:41:08,817 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-25 19:41:08,818 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:41:08,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081245003] [2021-11-25 19:41:08,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081245003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:41:08,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:41:08,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:41:08,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515262359] [2021-11-25 19:41:08,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:41:08,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:41:08,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:41:08,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:41:08,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:41:08,822 INFO L87 Difference]: Start difference. First operand 18059 states and 26158 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-25 19:41:12,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:15,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:17,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:19,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:41:19,192 INFO L93 Difference]: Finished difference Result 49131 states and 71202 transitions. [2021-11-25 19:41:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:41:19,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 425 [2021-11-25 19:41:19,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:41:19,404 INFO L225 Difference]: With dead ends: 49131 [2021-11-25 19:41:19,404 INFO L226 Difference]: Without dead ends: 31145 [2021-11-25 19:41:19,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:41:19,504 INFO L933 BasicCegarLoop]: 3435 mSDtfsCounter, 2730 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2737 SdHoareTripleChecker+Valid, 5926 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:41:19,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2737 Valid, 5926 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 987 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2021-11-25 19:41:19,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31145 states. [2021-11-25 19:41:21,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31145 to 31117. [2021-11-25 19:41:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31117 states, 19244 states have (on average 1.302431926834338) internal successors, (25064), 19358 states have internal predecessors, (25064), 9937 states have call successors, (9937), 1934 states have call predecessors, (9937), 1933 states have return successors, (10017), 9842 states have call predecessors, (10017), 9933 states have call successors, (10017) [2021-11-25 19:41:21,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31117 states to 31117 states and 45018 transitions. [2021-11-25 19:41:21,751 INFO L78 Accepts]: Start accepts. Automaton has 31117 states and 45018 transitions. Word has length 425 [2021-11-25 19:41:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:41:21,752 INFO L470 AbstractCegarLoop]: Abstraction has 31117 states and 45018 transitions. [2021-11-25 19:41:21,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-25 19:41:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 31117 states and 45018 transitions. [2021-11-25 19:41:21,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-25 19:41:21,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:41:21,770 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:41:21,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:41:21,771 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:41:21,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:41:21,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1161040783, now seen corresponding path program 1 times [2021-11-25 19:41:21,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:41:21,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122337186] [2021-11-25 19:41:21,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:41:21,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:41:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:41:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5374 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2021-11-25 19:41:22,454 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:41:22,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122337186] [2021-11-25 19:41:22,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122337186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:41:22,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:41:22,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:41:22,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464534995] [2021-11-25 19:41:22,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:41:22,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:41:22,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:41:22,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:41:22,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:41:22,457 INFO L87 Difference]: Start difference. First operand 31117 states and 45018 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-25 19:41:26,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:31,754 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:33,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:36,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:41:36,537 INFO L93 Difference]: Finished difference Result 59367 states and 85919 transitions. [2021-11-25 19:41:36,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:41:36,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 432 [2021-11-25 19:41:36,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:41:37,023 INFO L225 Difference]: With dead ends: 59367 [2021-11-25 19:41:37,023 INFO L226 Difference]: Without dead ends: 59365 [2021-11-25 19:41:37,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:41:37,062 INFO L933 BasicCegarLoop]: 3568 mSDtfsCounter, 2844 mSDsluCounter, 11067 mSDsCounter, 0 mSdLazyCounter, 2113 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2861 SdHoareTripleChecker+Valid, 13098 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2113 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:41:37,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2861 Valid, 13098 Invalid, 2117 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2113 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2021-11-25 19:41:37,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59365 states. [2021-11-25 19:41:40,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59365 to 59359. [2021-11-25 19:41:40,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59359 states, 36684 states have (on average 1.3032929887689455) internal successors, (47810), 36906 states have internal predecessors, (47810), 18972 states have call successors, (18972), 3702 states have call predecessors, (18972), 3700 states have return successors, (19132), 18784 states have call predecessors, (19132), 18964 states have call successors, (19132) [2021-11-25 19:41:41,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59359 states to 59359 states and 85914 transitions. [2021-11-25 19:41:41,572 INFO L78 Accepts]: Start accepts. Automaton has 59359 states and 85914 transitions. Word has length 432 [2021-11-25 19:41:41,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:41:41,573 INFO L470 AbstractCegarLoop]: Abstraction has 59359 states and 85914 transitions. [2021-11-25 19:41:41,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-25 19:41:41,575 INFO L276 IsEmpty]: Start isEmpty. Operand 59359 states and 85914 transitions. [2021-11-25 19:41:41,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-25 19:41:41,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:41:41,595 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:41:41,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:41:41,595 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:41:41,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:41:41,596 INFO L85 PathProgramCache]: Analyzing trace with hash 4412813, now seen corresponding path program 1 times [2021-11-25 19:41:41,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:41:41,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13346285] [2021-11-25 19:41:41,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:41:41,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:41:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:41:42,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5377 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5375 trivial. 0 not checked. [2021-11-25 19:41:42,535 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:41:42,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13346285] [2021-11-25 19:41:42,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13346285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:41:42,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:41:42,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:41:42,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457021112] [2021-11-25 19:41:42,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:41:42,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:41:42,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:41:42,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:41:42,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:41:42,539 INFO L87 Difference]: Start difference. First operand 59359 states and 85914 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-25 19:41:45,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:50,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:52,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:41:55,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:41:55,454 INFO L93 Difference]: Finished difference Result 87532 states and 126609 transitions. [2021-11-25 19:41:55,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:41:55,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 438 [2021-11-25 19:41:55,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:41:56,288 INFO L225 Difference]: With dead ends: 87532 [2021-11-25 19:41:56,289 INFO L226 Difference]: Without dead ends: 87530 [2021-11-25 19:41:56,334 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:41:56,336 INFO L933 BasicCegarLoop]: 3568 mSDtfsCounter, 2815 mSDsluCounter, 11042 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2831 SdHoareTripleChecker+Valid, 13077 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:41:56,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2831 Valid, 13077 Invalid, 2115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2110 Invalid, 3 Unknown, 0 Unchecked, 10.6s Time] [2021-11-25 19:41:56,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87530 states. [2021-11-25 19:42:00,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87530 to 87511. [2021-11-25 19:42:00,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87511 states, 54022 states have (on average 1.3028395838732367) internal successors, (70382), 54367 states have internal predecessors, (70382), 27952 states have call successors, (27952), 5537 states have call predecessors, (27952), 5534 states have return successors, (28255), 27656 states have call predecessors, (28255), 27940 states have call successors, (28255) [2021-11-25 19:42:01,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87511 states to 87511 states and 126589 transitions. [2021-11-25 19:42:01,390 INFO L78 Accepts]: Start accepts. Automaton has 87511 states and 126589 transitions. Word has length 438 [2021-11-25 19:42:01,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:01,391 INFO L470 AbstractCegarLoop]: Abstraction has 87511 states and 126589 transitions. [2021-11-25 19:42:01,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-25 19:42:01,392 INFO L276 IsEmpty]: Start isEmpty. Operand 87511 states and 126589 transitions. [2021-11-25 19:42:01,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2021-11-25 19:42:01,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:01,415 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:42:01,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:42:01,415 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:42:01,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:01,417 INFO L85 PathProgramCache]: Analyzing trace with hash 2021480452, now seen corresponding path program 1 times [2021-11-25 19:42:01,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:01,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848937510] [2021-11-25 19:42:01,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:01,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5381 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5377 trivial. 0 not checked. [2021-11-25 19:42:02,423 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:02,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848937510] [2021-11-25 19:42:02,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848937510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:02,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:42:02,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:42:02,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324184058] [2021-11-25 19:42:02,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:02,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:42:02,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:02,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:42:02,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:42:02,426 INFO L87 Difference]: Start difference. First operand 87511 states and 126589 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-25 19:42:06,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:42:11,065 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:42:13,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:42:16,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:16,636 INFO L93 Difference]: Finished difference Result 87523 states and 126597 transitions. [2021-11-25 19:42:16,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:42:16,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 445 [2021-11-25 19:42:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:17,035 INFO L225 Difference]: With dead ends: 87523 [2021-11-25 19:42:17,036 INFO L226 Difference]: Without dead ends: 87521 [2021-11-25 19:42:17,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:42:17,071 INFO L933 BasicCegarLoop]: 3572 mSDtfsCounter, 2842 mSDsluCounter, 11073 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2857 SdHoareTripleChecker+Valid, 13104 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:17,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2857 Valid, 13104 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2120 Invalid, 3 Unknown, 0 Unchecked, 11.8s Time] [2021-11-25 19:42:17,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87521 states. [2021-11-25 19:42:21,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87521 to 87515. [2021-11-25 19:42:21,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87515 states, 54025 states have (on average 1.30282276723739) internal successors, (70385), 54370 states have internal predecessors, (70385), 27952 states have call successors, (27952), 5538 states have call predecessors, (27952), 5535 states have return successors, (28255), 27656 states have call predecessors, (28255), 27940 states have call successors, (28255) [2021-11-25 19:42:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87515 states to 87515 states and 126592 transitions. [2021-11-25 19:42:21,500 INFO L78 Accepts]: Start accepts. Automaton has 87515 states and 126592 transitions. Word has length 445 [2021-11-25 19:42:21,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:21,501 INFO L470 AbstractCegarLoop]: Abstraction has 87515 states and 126592 transitions. [2021-11-25 19:42:21,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-25 19:42:21,502 INFO L276 IsEmpty]: Start isEmpty. Operand 87515 states and 126592 transitions. [2021-11-25 19:42:21,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2021-11-25 19:42:21,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:21,523 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:42:21,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:42:21,524 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:42:21,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:21,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1391298391, now seen corresponding path program 1 times [2021-11-25 19:42:21,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:21,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718129086] [2021-11-25 19:42:21,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:21,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:22,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5391 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5385 trivial. 0 not checked. [2021-11-25 19:42:22,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:22,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718129086] [2021-11-25 19:42:22,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718129086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:22,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:42:22,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:42:22,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182512844] [2021-11-25 19:42:22,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:22,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:42:22,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:22,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:42:22,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:42:22,593 INFO L87 Difference]: Start difference. First operand 87515 states and 126592 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-25 19:42:26,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:42:30,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:42:33,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:42:36,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:36,026 INFO L93 Difference]: Finished difference Result 87527 states and 126600 transitions. [2021-11-25 19:42:36,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:42:36,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 450 [2021-11-25 19:42:36,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:36,398 INFO L225 Difference]: With dead ends: 87527 [2021-11-25 19:42:36,398 INFO L226 Difference]: Without dead ends: 87525 [2021-11-25 19:42:36,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:42:36,429 INFO L933 BasicCegarLoop]: 3572 mSDtfsCounter, 2842 mSDsluCounter, 11073 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2856 SdHoareTripleChecker+Valid, 13104 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:36,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2856 Valid, 13104 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2120 Invalid, 3 Unknown, 0 Unchecked, 11.2s Time] [2021-11-25 19:42:36,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87525 states. [2021-11-25 19:42:40,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87525 to 87519. [2021-11-25 19:42:40,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87519 states, 54028 states have (on average 1.30280595246909) internal successors, (70388), 54373 states have internal predecessors, (70388), 27952 states have call successors, (27952), 5539 states have call predecessors, (27952), 5536 states have return successors, (28255), 27656 states have call predecessors, (28255), 27940 states have call successors, (28255) [2021-11-25 19:42:40,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87519 states to 87519 states and 126595 transitions. [2021-11-25 19:42:40,550 INFO L78 Accepts]: Start accepts. Automaton has 87519 states and 126595 transitions. Word has length 450 [2021-11-25 19:42:40,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:40,551 INFO L470 AbstractCegarLoop]: Abstraction has 87519 states and 126595 transitions. [2021-11-25 19:42:40,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-25 19:42:40,552 INFO L276 IsEmpty]: Start isEmpty. Operand 87519 states and 126595 transitions. [2021-11-25 19:42:40,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2021-11-25 19:42:40,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:40,574 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:42:40,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:42:40,575 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:42:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:40,576 INFO L85 PathProgramCache]: Analyzing trace with hash 699865521, now seen corresponding path program 1 times [2021-11-25 19:42:40,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:40,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169646190] [2021-11-25 19:42:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:40,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5398 trivial. 0 not checked. [2021-11-25 19:42:41,535 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:41,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169646190] [2021-11-25 19:42:41,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169646190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:41,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:42:41,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:42:41,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179957106] [2021-11-25 19:42:41,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:41,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:42:41,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:41,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:42:41,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:42:41,538 INFO L87 Difference]: Start difference. First operand 87519 states and 126595 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-25 19:42:44,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:42:49,640 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:42:51,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:42:54,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:54,700 INFO L93 Difference]: Finished difference Result 87531 states and 126603 transitions. [2021-11-25 19:42:54,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:42:54,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 452 [2021-11-25 19:42:54,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:55,343 INFO L225 Difference]: With dead ends: 87531 [2021-11-25 19:42:55,343 INFO L226 Difference]: Without dead ends: 87529 [2021-11-25 19:42:55,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:42:55,377 INFO L933 BasicCegarLoop]: 3572 mSDtfsCounter, 2841 mSDsluCounter, 11073 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2854 SdHoareTripleChecker+Valid, 13104 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:55,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2854 Valid, 13104 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2120 Invalid, 3 Unknown, 0 Unchecked, 10.8s Time] [2021-11-25 19:42:55,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87529 states. [2021-11-25 19:42:58,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87529 to 87523. [2021-11-25 19:42:58,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87523 states, 54031 states have (on average 1.3027891395680258) internal successors, (70391), 54376 states have internal predecessors, (70391), 27952 states have call successors, (27952), 5540 states have call predecessors, (27952), 5537 states have return successors, (28255), 27656 states have call predecessors, (28255), 27940 states have call successors, (28255) [2021-11-25 19:42:59,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87523 states to 87523 states and 126598 transitions. [2021-11-25 19:42:59,777 INFO L78 Accepts]: Start accepts. Automaton has 87523 states and 126598 transitions. Word has length 452 [2021-11-25 19:42:59,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:59,778 INFO L470 AbstractCegarLoop]: Abstraction has 87523 states and 126598 transitions. [2021-11-25 19:42:59,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-25 19:42:59,778 INFO L276 IsEmpty]: Start isEmpty. Operand 87523 states and 126598 transitions. [2021-11-25 19:42:59,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2021-11-25 19:42:59,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:59,800 INFO L514 BasicCegarLoop]: trace histogram [38, 36, 36, 36, 36, 36, 36, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:42:59,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:42:59,800 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:42:59,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:59,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1426447475, now seen corresponding path program 1 times [2021-11-25 19:42:59,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:59,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511719509] [2021-11-25 19:42:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:59,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:43:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5203 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5192 trivial. 0 not checked. [2021-11-25 19:43:00,322 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:43:00,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511719509] [2021-11-25 19:43:00,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511719509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:43:00,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:43:00,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:43:00,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620276995] [2021-11-25 19:43:00,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:43:00,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:43:00,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:43:00,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:43:00,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:00,327 INFO L87 Difference]: Start difference. First operand 87523 states and 126598 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-25 19:43:03,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:43:08,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:43:10,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:43:13,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:43:13,279 INFO L93 Difference]: Finished difference Result 214147 states and 309621 transitions. [2021-11-25 19:43:13,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:43:13,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 453 [2021-11-25 19:43:13,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:43:13,861 INFO L225 Difference]: With dead ends: 214147 [2021-11-25 19:43:13,862 INFO L226 Difference]: Without dead ends: 126697 [2021-11-25 19:43:14,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:43:14,109 INFO L933 BasicCegarLoop]: 3697 mSDtfsCounter, 2684 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2691 SdHoareTripleChecker+Valid, 6210 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:43:14,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2691 Valid, 6210 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1020 Invalid, 3 Unknown, 0 Unchecked, 8.6s Time] [2021-11-25 19:43:14,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126697 states. [2021-11-25 19:43:19,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126697 to 126571. [2021-11-25 19:43:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126571 states, 78188 states have (on average 1.3016063846114494) internal successors, (101770), 78699 states have internal predecessors, (101770), 40383 states have call successors, (40383), 8024 states have call predecessors, (40383), 7997 states have return successors, (40782), 39920 states have call predecessors, (40782), 40371 states have call successors, (40782) [2021-11-25 19:43:20,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126571 states to 126571 states and 182935 transitions. [2021-11-25 19:43:20,369 INFO L78 Accepts]: Start accepts. Automaton has 126571 states and 182935 transitions. Word has length 453 [2021-11-25 19:43:20,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:43:20,371 INFO L470 AbstractCegarLoop]: Abstraction has 126571 states and 182935 transitions. [2021-11-25 19:43:20,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-25 19:43:20,371 INFO L276 IsEmpty]: Start isEmpty. Operand 126571 states and 182935 transitions. [2021-11-25 19:43:20,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2021-11-25 19:43:20,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:43:20,396 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:43:20,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:43:20,396 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:43:20,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:43:20,397 INFO L85 PathProgramCache]: Analyzing trace with hash 509512909, now seen corresponding path program 1 times [2021-11-25 19:43:20,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:43:20,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789740833] [2021-11-25 19:43:20,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:43:20,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:43:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat