./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 03e2d0e28997af6c53edeab79acb28db60116030b3545ebb50af81c3e69fe889 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:19:02,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:19:02,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:19:02,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:19:02,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:19:02,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:19:02,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:19:02,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:19:02,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:19:02,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:19:02,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:19:02,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:19:02,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:19:02,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:19:02,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:19:02,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:19:02,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:19:02,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:19:02,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:19:02,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:19:02,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:19:02,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:19:02,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:19:02,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:19:02,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:19:02,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:19:02,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:19:02,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:19:02,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:19:02,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:19:02,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:19:02,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:19:02,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:19:02,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:19:02,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:19:02,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:19:02,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:19:02,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:19:02,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:19:02,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:19:02,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:19:02,421 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:19:02,463 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:19:02,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:19:02,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:19:02,464 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:19:02,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:19:02,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:19:02,466 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:19:02,466 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:19:02,466 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:19:02,466 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:19:02,467 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:19:02,468 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:19:02,468 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:19:02,468 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:19:02,469 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:19:02,469 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:19:02,469 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:19:02,469 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:19:02,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:19:02,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:19:02,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:19:02,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:19:02,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:19:02,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:19:02,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:19:02,472 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:19:02,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:19:02,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:19:02,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:19:02,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:19:02,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:19:02,474 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:19:02,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:19:02,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:19:02,475 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:19:02,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:19:02,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:19:02,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:19:02,476 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03e2d0e28997af6c53edeab79acb28db60116030b3545ebb50af81c3e69fe889 [2022-11-23 15:19:02,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:19:02,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:19:02,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:19:02,815 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:19:02,816 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:19:02,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i [2022-11-23 15:19:05,858 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:19:06,605 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:19:06,606 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i [2022-11-23 15:19:06,666 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/data/1095467c6/7331bbd7e2694c2daab0c3e73c1b9423/FLAGb77ca3b0d [2022-11-23 15:19:06,686 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/data/1095467c6/7331bbd7e2694c2daab0c3e73c1b9423 [2022-11-23 15:19:06,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:19:06,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:19:06,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:19:06,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:19:06,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:19:06,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:19:06" (1/1) ... [2022-11-23 15:19:06,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760d251d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:06, skipping insertion in model container [2022-11-23 15:19:06,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:19:06" (1/1) ... [2022-11-23 15:19:06,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:19:06,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:19:11,640 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482333,482346] [2022-11-23 15:19:11,644 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482502,482515] [2022-11-23 15:19:11,645 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482669,482682] [2022-11-23 15:19:11,646 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482837,482850] [2022-11-23 15:19:11,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:19:11,770 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:19:12,446 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482333,482346] [2022-11-23 15:19:12,447 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482502,482515] [2022-11-23 15:19:12,447 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482669,482682] [2022-11-23 15:19:12,448 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482837,482850] [2022-11-23 15:19:12,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:19:12,748 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:19:12,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:12 WrapperNode [2022-11-23 15:19:12,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:19:12,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:19:12,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:19:12,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:19:12,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:12" (1/1) ... [2022-11-23 15:19:12,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:12" (1/1) ... [2022-11-23 15:19:13,351 INFO L138 Inliner]: procedures = 578, calls = 6434, calls flagged for inlining = 254, calls inlined = 233, statements flattened = 8805 [2022-11-23 15:19:13,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:19:13,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:19:13,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:19:13,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:19:13,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:12" (1/1) ... [2022-11-23 15:19:13,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:12" (1/1) ... [2022-11-23 15:19:13,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:12" (1/1) ... [2022-11-23 15:19:13,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:12" (1/1) ... [2022-11-23 15:19:13,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:12" (1/1) ... [2022-11-23 15:19:13,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:12" (1/1) ... [2022-11-23 15:19:14,026 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:12" (1/1) ... [2022-11-23 15:19:14,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:12" (1/1) ... [2022-11-23 15:19:14,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:19:14,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:19:14,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:19:14,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:19:14,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:12" (1/1) ... [2022-11-23 15:19:14,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:19:14,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:19:14,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:19:14,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:19:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2022-11-23 15:19:14,185 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2022-11-23 15:19:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_eth_tx_timeout [2022-11-23 15:19:14,186 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_eth_tx_timeout [2022-11-23 15:19:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-23 15:19:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 15:19:14,186 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 15:19:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 15:19:14,186 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 15:19:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_trigger [2022-11-23 15:19:14,187 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_trigger [2022-11-23 15:19:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 15:19:14,187 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 15:19:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:19:14,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:19:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_slock_of_NOT_ARG_SIGN [2022-11-23 15:19:14,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_slock_of_NOT_ARG_SIGN [2022-11-23 15:19:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_mib_mode_helper [2022-11-23 15:19:14,188 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_mib_mode_helper [2022-11-23 15:19:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 15:19:14,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 15:19:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 15:19:14,190 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 15:19:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-23 15:19:14,191 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-23 15:19:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-11-23 15:19:14,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-11-23 15:19:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_slock_of_NOT_ARG_SIGN [2022-11-23 15:19:14,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_slock_of_NOT_ARG_SIGN [2022-11-23 15:19:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set_request [2022-11-23 15:19:14,191 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set_request [2022-11-23 15:19:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2022-11-23 15:19:14,192 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2022-11-23 15:19:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 15:19:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_get_state [2022-11-23 15:19:14,192 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_get_state [2022-11-23 15:19:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 15:19:14,193 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 15:19:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 15:19:14,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 15:19:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 15:19:14,193 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 15:19:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 15:19:14,194 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 15:19:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_release [2022-11-23 15:19:14,195 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_release [2022-11-23 15:19:14,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 15:19:14,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 15:19:14,195 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-23 15:19:14,195 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-23 15:19:14,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:19:14,195 INFO L130 BoogieDeclarations]: Found specification of procedure send_simple_event [2022-11-23 15:19:14,196 INFO L138 BoogieDeclarations]: Found implementation of procedure send_simple_event [2022-11-23 15:19:14,196 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-23 15:19:14,196 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-23 15:19:14,196 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 15:19:14,196 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 15:19:14,196 INFO L130 BoogieDeclarations]: Found specification of procedure send_formatted_event [2022-11-23 15:19:14,196 INFO L138 BoogieDeclarations]: Found implementation of procedure send_formatted_event [2022-11-23 15:19:14,197 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set [2022-11-23 15:19:14,197 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set [2022-11-23 15:19:14,197 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 15:19:14,197 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 15:19:14,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 15:19:14,197 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_reset [2022-11-23 15:19:14,197 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_reset [2022-11-23 15:19:14,198 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 15:19:14,198 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 15:19:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-23 15:19:14,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-23 15:19:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2022-11-23 15:19:14,199 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2022-11-23 15:19:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:19:14,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 15:19:14,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 15:19:14,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:19:14,201 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 15:19:14,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 15:19:14,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 15:19:14,201 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 15:19:14,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 15:19:14,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 15:19:14,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 15:19:14,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 15:19:14,202 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_open [2022-11-23 15:19:14,202 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_open [2022-11-23 15:19:14,203 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_resume [2022-11-23 15:19:14,203 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_resume [2022-11-23 15:19:14,203 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 15:19:14,204 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 15:19:14,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 15:19:14,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 15:19:14,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:19:14,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 15:19:14,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 15:19:14,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 15:19:14,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 15:19:14,205 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2022-11-23 15:19:14,205 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2022-11-23 15:19:14,205 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-23 15:19:14,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-23 15:19:14,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:19:14,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 15:19:14,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 15:19:14,208 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 15:19:14,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 15:19:14,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:19:14,211 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 15:19:14,211 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:19:14,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:19:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-23 15:19:14,213 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-23 15:19:14,213 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-23 15:19:14,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-23 15:19:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 15:19:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 15:19:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 15:19:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 15:19:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-23 15:19:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-23 15:19:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 15:19:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 15:19:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2022-11-23 15:19:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2022-11-23 15:19:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-23 15:19:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-23 15:19:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-23 15:19:14,221 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-23 15:19:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_prism54_module_exit_12_2 [2022-11-23 15:19:14,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_prism54_module_exit_12_2 [2022-11-23 15:19:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2022-11-23 15:19:14,221 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2022-11-23 15:19:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-23 15:19:14,221 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-23 15:19:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:19:14,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:19:14,222 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2022-11-23 15:19:14,222 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2022-11-23 15:19:14,222 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-23 15:19:14,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-23 15:19:14,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-23 15:19:14,222 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-23 15:19:14,222 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_clear_mac [2022-11-23 15:19:14,223 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_clear_mac [2022-11-23 15:19:14,223 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_wpa_bss_ie_get [2022-11-23 15:19:14,223 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_wpa_bss_ie_get [2022-11-23 15:19:14,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 15:19:14,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 15:19:14,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:19:14,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:19:14,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 15:19:14,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 15:19:14,224 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-23 15:19:14,224 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-23 15:19:14,224 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 15:19:14,224 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 15:19:14,224 INFO L130 BoogieDeclarations]: Found specification of procedure handle_request [2022-11-23 15:19:14,224 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_request [2022-11-23 15:19:14,224 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_bring_down [2022-11-23 15:19:14,225 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_bring_down [2022-11-23 15:19:14,225 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2022-11-23 15:19:14,225 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2022-11-23 15:19:14,225 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 15:19:14,225 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 15:19:14,225 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-23 15:19:14,225 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-23 15:19:14,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 15:19:14,226 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 15:19:14,226 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 15:19:14,226 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 15:19:14,226 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-23 15:19:14,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-23 15:19:14,226 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 15:19:14,226 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 15:19:14,227 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-23 15:19:14,227 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-23 15:19:14,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:19:14,227 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 15:19:14,227 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 15:19:14,227 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_set_state [2022-11-23 15:19:14,227 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_set_state [2022-11-23 15:19:14,227 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2022-11-23 15:19:14,228 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2022-11-23 15:19:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:19:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set_varlen [2022-11-23 15:19:14,228 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set_varlen [2022-11-23 15:19:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2022-11-23 15:19:14,228 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2022-11-23 15:19:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2022-11-23 15:19:14,229 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2022-11-23 15:19:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:19:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_close [2022-11-23 15:19:14,229 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_close [2022-11-23 15:19:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-23 15:19:14,229 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-23 15:19:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_get_request [2022-11-23 15:19:14,229 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_get_request [2022-11-23 15:19:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-23 15:19:14,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-23 15:19:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 15:19:14,230 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 15:19:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-23 15:19:14,230 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-23 15:19:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 15:19:14,230 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 15:19:14,231 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_remove [2022-11-23 15:19:14,231 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_remove [2022-11-23 15:19:14,231 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_w32_flush [2022-11-23 15:19:14,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_w32_flush [2022-11-23 15:19:14,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 15:19:14,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 15:19:14,231 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 15:19:14,231 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 15:19:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-23 15:19:14,232 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-23 15:19:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-23 15:19:14,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-23 15:19:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-23 15:19:14,232 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-23 15:19:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit_list [2022-11-23 15:19:14,232 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit_list [2022-11-23 15:19:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-23 15:19:14,233 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-23 15:19:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-23 15:19:14,233 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-23 15:19:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 15:19:14,233 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 15:19:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgmt_rx_fill [2022-11-23 15:19:14,233 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgmt_rx_fill [2022-11-23 15:19:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_transaction [2022-11-23 15:19:14,234 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_transaction [2022-11-23 15:19:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_61 [2022-11-23 15:19:14,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_61 [2022-11-23 15:19:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 15:19:14,234 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 15:19:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure channel_of_freq [2022-11-23 15:19:14,234 INFO L138 BoogieDeclarations]: Found implementation of procedure channel_of_freq [2022-11-23 15:19:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:19:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-23 15:19:14,235 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-23 15:19:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-23 15:19:14,235 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-23 15:19:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:19:14,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:19:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_free_memory [2022-11-23 15:19:14,235 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_free_memory [2022-11-23 15:19:14,236 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit [2022-11-23 15:19:14,236 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit [2022-11-23 15:19:14,236 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-23 15:19:14,236 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-23 15:19:14,236 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32s [2022-11-23 15:19:14,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32s [2022-11-23 15:19:14,236 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-23 15:19:14,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-23 15:19:14,237 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-23 15:19:14,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-23 15:19:14,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 15:19:14,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 15:19:14,237 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-23 15:19:14,237 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-23 15:19:14,237 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-23 15:19:14,237 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-23 15:19:14,238 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_in_queue [2022-11-23 15:19:14,238 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_in_queue [2022-11-23 15:19:14,238 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-23 15:19:14,238 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-23 15:19:14,238 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-23 15:19:14,238 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-23 15:19:14,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:19:14,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 15:19:14,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 15:19:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-23 15:19:14,239 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-23 15:19:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_disable_interrupts [2022-11-23 15:19:14,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_disable_interrupts [2022-11-23 15:19:15,549 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:19:15,553 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:19:15,980 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:19:24,759 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 15:19:25,168 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:19:27,007 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:19:27,007 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 15:19:27,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:19:27 BoogieIcfgContainer [2022-11-23 15:19:27,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:19:27,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:19:27,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:19:27,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:19:27,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:19:06" (1/3) ... [2022-11-23 15:19:27,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a20cf43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:19:27, skipping insertion in model container [2022-11-23 15:19:27,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:12" (2/3) ... [2022-11-23 15:19:27,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a20cf43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:19:27, skipping insertion in model container [2022-11-23 15:19:27,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:19:27" (3/3) ... [2022-11-23 15:19:27,021 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i [2022-11-23 15:19:27,041 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:19:27,041 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-23 15:19:27,131 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:19:27,140 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6057efd3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:19:27,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 15:19:27,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 1825 states, 1075 states have (on average 1.3144186046511628) internal successors, (1413), 1126 states have internal predecessors, (1413), 620 states have call successors, (620), 128 states have call predecessors, (620), 127 states have return successors, (614), 594 states have call predecessors, (614), 614 states have call successors, (614) [2022-11-23 15:19:27,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 15:19:27,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:27,180 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:27,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:19:27,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:27,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1436494310, now seen corresponding path program 1 times [2022-11-23 15:19:27,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:27,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641034377] [2022-11-23 15:19:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:27,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-23 15:19:28,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:28,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641034377] [2022-11-23 15:19:28,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641034377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:28,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:28,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:19:28,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186140318] [2022-11-23 15:19:28,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:28,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:19:28,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:28,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:19:28,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:28,811 INFO L87 Difference]: Start difference. First operand has 1825 states, 1075 states have (on average 1.3144186046511628) internal successors, (1413), 1126 states have internal predecessors, (1413), 620 states have call successors, (620), 128 states have call predecessors, (620), 127 states have return successors, (614), 594 states have call predecessors, (614), 614 states have call successors, (614) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 15:19:34,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:34,125 INFO L93 Difference]: Finished difference Result 5172 states and 7638 transitions. [2022-11-23 15:19:34,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:19:34,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-11-23 15:19:34,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:34,185 INFO L225 Difference]: With dead ends: 5172 [2022-11-23 15:19:34,185 INFO L226 Difference]: Without dead ends: 3345 [2022-11-23 15:19:34,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:34,211 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2230 mSDsluCounter, 2276 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2230 SdHoareTripleChecker+Valid, 5103 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:34,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2230 Valid, 5103 Invalid, 688 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-23 15:19:34,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2022-11-23 15:19:34,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 3318. [2022-11-23 15:19:34,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3318 states, 1959 states have (on average 1.3088310362429811) internal successors, (2564), 2059 states have internal predecessors, (2564), 1113 states have call successors, (1113), 245 states have call predecessors, (1113), 243 states have return successors, (1111), 1063 states have call predecessors, (1111), 1109 states have call successors, (1111) [2022-11-23 15:19:34,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3318 states to 3318 states and 4788 transitions. [2022-11-23 15:19:34,540 INFO L78 Accepts]: Start accepts. Automaton has 3318 states and 4788 transitions. Word has length 75 [2022-11-23 15:19:34,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:34,542 INFO L495 AbstractCegarLoop]: Abstraction has 3318 states and 4788 transitions. [2022-11-23 15:19:34,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 15:19:34,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3318 states and 4788 transitions. [2022-11-23 15:19:34,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-23 15:19:34,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:34,554 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:34,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:19:34,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:19:34,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:34,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1463730524, now seen corresponding path program 1 times [2022-11-23 15:19:34,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:34,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113322610] [2022-11-23 15:19:34,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:34,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-23 15:19:35,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:35,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113322610] [2022-11-23 15:19:35,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113322610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:35,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:35,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:19:35,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299985806] [2022-11-23 15:19:35,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:35,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:19:35,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:35,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:19:35,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:35,393 INFO L87 Difference]: Start difference. First operand 3318 states and 4788 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:19:41,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:41,131 INFO L93 Difference]: Finished difference Result 9841 states and 14195 transitions. [2022-11-23 15:19:41,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:19:41,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 81 [2022-11-23 15:19:41,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:41,187 INFO L225 Difference]: With dead ends: 9841 [2022-11-23 15:19:41,187 INFO L226 Difference]: Without dead ends: 6536 [2022-11-23 15:19:41,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:41,211 INFO L413 NwaCegarLoop]: 2863 mSDtfsCounter, 2528 mSDsluCounter, 2249 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2528 SdHoareTripleChecker+Valid, 5112 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:41,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2528 Valid, 5112 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-23 15:19:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6536 states. [2022-11-23 15:19:41,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6536 to 6532. [2022-11-23 15:19:41,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6532 states, 3875 states have (on average 1.3078709677419356) internal successors, (5068), 4067 states have internal predecessors, (5068), 2171 states have call successors, (2171), 486 states have call predecessors, (2171), 483 states have return successors, (2171), 2078 states have call predecessors, (2171), 2167 states have call successors, (2171) [2022-11-23 15:19:41,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 9410 transitions. [2022-11-23 15:19:41,695 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 9410 transitions. Word has length 81 [2022-11-23 15:19:41,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:41,698 INFO L495 AbstractCegarLoop]: Abstraction has 6532 states and 9410 transitions. [2022-11-23 15:19:41,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:19:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 9410 transitions. [2022-11-23 15:19:41,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 15:19:41,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:41,701 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:41,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:19:41,702 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:19:41,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:41,702 INFO L85 PathProgramCache]: Analyzing trace with hash 411773234, now seen corresponding path program 1 times [2022-11-23 15:19:41,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:41,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330504349] [2022-11-23 15:19:41,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:41,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:42,543 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-23 15:19:42,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:42,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330504349] [2022-11-23 15:19:42,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330504349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:42,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:42,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:19:42,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52761313] [2022-11-23 15:19:42,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:42,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:19:42,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:42,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:19:42,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:42,547 INFO L87 Difference]: Start difference. First operand 6532 states and 9410 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:19:45,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:48,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:48,314 INFO L93 Difference]: Finished difference Result 19058 states and 27420 transitions. [2022-11-23 15:19:48,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:19:48,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 85 [2022-11-23 15:19:48,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:48,405 INFO L225 Difference]: With dead ends: 19058 [2022-11-23 15:19:48,405 INFO L226 Difference]: Without dead ends: 12539 [2022-11-23 15:19:48,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:48,451 INFO L413 NwaCegarLoop]: 2851 mSDtfsCounter, 2433 mSDsluCounter, 2219 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 5070 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:48,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2433 Valid, 5070 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-23 15:19:48,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12539 states. [2022-11-23 15:19:49,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12539 to 12502. [2022-11-23 15:19:49,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12502 states, 7407 states have (on average 1.304711759146753) internal successors, (9664), 7787 states have internal predecessors, (9664), 4147 states have call successors, (4147), 956 states have call predecessors, (4147), 945 states have return successors, (4153), 3946 states have call predecessors, (4153), 4143 states have call successors, (4153) [2022-11-23 15:19:49,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12502 states to 12502 states and 17964 transitions. [2022-11-23 15:19:49,358 INFO L78 Accepts]: Start accepts. Automaton has 12502 states and 17964 transitions. Word has length 85 [2022-11-23 15:19:49,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:49,359 INFO L495 AbstractCegarLoop]: Abstraction has 12502 states and 17964 transitions. [2022-11-23 15:19:49,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:19:49,360 INFO L276 IsEmpty]: Start isEmpty. Operand 12502 states and 17964 transitions. [2022-11-23 15:19:49,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-23 15:19:49,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:49,373 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2022-11-23 15:19:49,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:19:49,373 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:19:49,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:49,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1600838985, now seen corresponding path program 1 times [2022-11-23 15:19:49,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:49,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333890182] [2022-11-23 15:19:49,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:49,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-23 15:19:50,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:50,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333890182] [2022-11-23 15:19:50,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333890182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:50,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:50,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:19:50,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014289875] [2022-11-23 15:19:50,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:50,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:19:50,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:50,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:19:50,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:19:50,803 INFO L87 Difference]: Start difference. First operand 12502 states and 17964 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 15:19:56,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:56,087 INFO L93 Difference]: Finished difference Result 12508 states and 17969 transitions. [2022-11-23 15:19:56,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:19:56,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 123 [2022-11-23 15:19:56,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:56,180 INFO L225 Difference]: With dead ends: 12508 [2022-11-23 15:19:56,180 INFO L226 Difference]: Without dead ends: 12506 [2022-11-23 15:19:56,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:19:56,193 INFO L413 NwaCegarLoop]: 2279 mSDtfsCounter, 2579 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2590 SdHoareTripleChecker+Valid, 6824 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:56,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2590 Valid, 6824 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-23 15:19:56,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12506 states. [2022-11-23 15:19:57,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12506 to 12506. [2022-11-23 15:19:57,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12506 states, 7410 states have (on average 1.3045883940620784) internal successors, (9667), 7790 states have internal predecessors, (9667), 4147 states have call successors, (4147), 957 states have call predecessors, (4147), 946 states have return successors, (4153), 3946 states have call predecessors, (4153), 4143 states have call successors, (4153) [2022-11-23 15:19:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12506 states to 12506 states and 17967 transitions. [2022-11-23 15:19:57,128 INFO L78 Accepts]: Start accepts. Automaton has 12506 states and 17967 transitions. Word has length 123 [2022-11-23 15:19:57,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:57,129 INFO L495 AbstractCegarLoop]: Abstraction has 12506 states and 17967 transitions. [2022-11-23 15:19:57,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 15:19:57,129 INFO L276 IsEmpty]: Start isEmpty. Operand 12506 states and 17967 transitions. [2022-11-23 15:19:57,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-23 15:19:57,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:57,136 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2022-11-23 15:19:57,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:19:57,137 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:19:57,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:57,137 INFO L85 PathProgramCache]: Analyzing trace with hash -976664988, now seen corresponding path program 1 times [2022-11-23 15:19:57,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:57,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128829464] [2022-11-23 15:19:57,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:57,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:58,887 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-23 15:19:58,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:58,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128829464] [2022-11-23 15:19:58,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128829464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:58,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:58,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:19:58,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630603748] [2022-11-23 15:19:58,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:58,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:19:58,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:58,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:19:58,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:19:58,891 INFO L87 Difference]: Start difference. First operand 12506 states and 17967 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:20:04,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:04,096 INFO L93 Difference]: Finished difference Result 12512 states and 17972 transitions. [2022-11-23 15:20:04,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:20:04,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2022-11-23 15:20:04,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:04,152 INFO L225 Difference]: With dead ends: 12512 [2022-11-23 15:20:04,152 INFO L226 Difference]: Without dead ends: 12510 [2022-11-23 15:20:04,158 INFO L412 NwaCegarLoop]: 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 [2022-11-23 15:20:04,159 INFO L413 NwaCegarLoop]: 2282 mSDtfsCounter, 2574 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2584 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:04,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2584 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-23 15:20:04,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12510 states. [2022-11-23 15:20:04,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12510 to 12510. [2022-11-23 15:20:04,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12510 states, 7413 states have (on average 1.3044651288277351) internal successors, (9670), 7793 states have internal predecessors, (9670), 4147 states have call successors, (4147), 958 states have call predecessors, (4147), 947 states have return successors, (4153), 3946 states have call predecessors, (4153), 4143 states have call successors, (4153) [2022-11-23 15:20:04,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12510 states to 12510 states and 17970 transitions. [2022-11-23 15:20:04,900 INFO L78 Accepts]: Start accepts. Automaton has 12510 states and 17970 transitions. Word has length 128 [2022-11-23 15:20:04,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:04,900 INFO L495 AbstractCegarLoop]: Abstraction has 12510 states and 17970 transitions. [2022-11-23 15:20:04,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:20:04,901 INFO L276 IsEmpty]: Start isEmpty. Operand 12510 states and 17970 transitions. [2022-11-23 15:20:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-23 15:20:04,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:04,906 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:20:04,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:20:04,907 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:20:04,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:04,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1395097350, now seen corresponding path program 1 times [2022-11-23 15:20:04,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:04,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081485097] [2022-11-23 15:20:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:04,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-11-23 15:20:06,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:06,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081485097] [2022-11-23 15:20:06,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081485097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:06,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:06,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:20:06,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727317202] [2022-11-23 15:20:06,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:06,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:20:06,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:20:06,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:20:06,261 INFO L87 Difference]: Start difference. First operand 12510 states and 17970 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-23 15:20:10,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:11,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:13,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:13,545 INFO L93 Difference]: Finished difference Result 12516 states and 17975 transitions. [2022-11-23 15:20:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:20:13,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 137 [2022-11-23 15:20:13,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:13,614 INFO L225 Difference]: With dead ends: 12516 [2022-11-23 15:20:13,615 INFO L226 Difference]: Without dead ends: 12514 [2022-11-23 15:20:13,625 INFO L412 NwaCegarLoop]: 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 [2022-11-23 15:20:13,626 INFO L413 NwaCegarLoop]: 2282 mSDtfsCounter, 2573 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:13,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2582 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-23 15:20:13,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12514 states. [2022-11-23 15:20:14,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12514 to 12514. [2022-11-23 15:20:14,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12514 states, 7416 states have (on average 1.304341963322546) internal successors, (9673), 7796 states have internal predecessors, (9673), 4147 states have call successors, (4147), 959 states have call predecessors, (4147), 948 states have return successors, (4153), 3946 states have call predecessors, (4153), 4143 states have call successors, (4153) [2022-11-23 15:20:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12514 states to 12514 states and 17973 transitions. [2022-11-23 15:20:14,571 INFO L78 Accepts]: Start accepts. Automaton has 12514 states and 17973 transitions. Word has length 137 [2022-11-23 15:20:14,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:14,572 INFO L495 AbstractCegarLoop]: Abstraction has 12514 states and 17973 transitions. [2022-11-23 15:20:14,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-23 15:20:14,572 INFO L276 IsEmpty]: Start isEmpty. Operand 12514 states and 17973 transitions. [2022-11-23 15:20:14,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-23 15:20:14,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:14,580 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:20:14,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:20:14,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:20:14,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:14,581 INFO L85 PathProgramCache]: Analyzing trace with hash -981497471, now seen corresponding path program 1 times [2022-11-23 15:20:14,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:14,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321156112] [2022-11-23 15:20:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:14,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:15,753 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-11-23 15:20:15,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:15,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321156112] [2022-11-23 15:20:15,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321156112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:15,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:15,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:20:15,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799980721] [2022-11-23 15:20:15,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:15,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:20:15,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:15,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:20:15,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:20:15,756 INFO L87 Difference]: Start difference. First operand 12514 states and 17973 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 15:20:22,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:22,062 INFO L93 Difference]: Finished difference Result 12520 states and 17978 transitions. [2022-11-23 15:20:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:20:22,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 142 [2022-11-23 15:20:22,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:22,126 INFO L225 Difference]: With dead ends: 12520 [2022-11-23 15:20:22,127 INFO L226 Difference]: Without dead ends: 12518 [2022-11-23 15:20:22,136 INFO L412 NwaCegarLoop]: 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 [2022-11-23 15:20:22,137 INFO L413 NwaCegarLoop]: 2282 mSDtfsCounter, 2573 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:22,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2581 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-23 15:20:22,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12518 states. [2022-11-23 15:20:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12518 to 12518. [2022-11-23 15:20:22,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12518 states, 7419 states have (on average 1.304218897425529) internal successors, (9676), 7799 states have internal predecessors, (9676), 4147 states have call successors, (4147), 960 states have call predecessors, (4147), 949 states have return successors, (4153), 3946 states have call predecessors, (4153), 4143 states have call successors, (4153) [2022-11-23 15:20:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12518 states to 12518 states and 17976 transitions. [2022-11-23 15:20:23,113 INFO L78 Accepts]: Start accepts. Automaton has 12518 states and 17976 transitions. Word has length 142 [2022-11-23 15:20:23,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:23,114 INFO L495 AbstractCegarLoop]: Abstraction has 12518 states and 17976 transitions. [2022-11-23 15:20:23,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 15:20:23,114 INFO L276 IsEmpty]: Start isEmpty. Operand 12518 states and 17976 transitions. [2022-11-23 15:20:23,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-23 15:20:23,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:23,121 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 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] [2022-11-23 15:20:23,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:20:23,121 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:20:23,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:23,122 INFO L85 PathProgramCache]: Analyzing trace with hash 5255799, now seen corresponding path program 1 times [2022-11-23 15:20:23,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:23,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192502104] [2022-11-23 15:20:23,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:23,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-23 15:20:24,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:24,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192502104] [2022-11-23 15:20:24,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192502104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:24,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:24,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:20:24,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906239023] [2022-11-23 15:20:24,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:24,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:20:24,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:24,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:20:24,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:20:24,253 INFO L87 Difference]: Start difference. First operand 12518 states and 17976 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-23 15:20:29,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:29,931 INFO L93 Difference]: Finished difference Result 12524 states and 17981 transitions. [2022-11-23 15:20:29,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:20:29,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 143 [2022-11-23 15:20:29,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:29,985 INFO L225 Difference]: With dead ends: 12524 [2022-11-23 15:20:29,986 INFO L226 Difference]: Without dead ends: 12522 [2022-11-23 15:20:29,992 INFO L412 NwaCegarLoop]: 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 [2022-11-23 15:20:29,992 INFO L413 NwaCegarLoop]: 2282 mSDtfsCounter, 2574 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:29,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2581 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-23 15:20:30,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12522 states. [2022-11-23 15:20:30,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12522 to 12522. [2022-11-23 15:20:30,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12522 states, 7422 states have (on average 1.3040959310158986) internal successors, (9679), 7802 states have internal predecessors, (9679), 4147 states have call successors, (4147), 961 states have call predecessors, (4147), 950 states have return successors, (4153), 3946 states have call predecessors, (4153), 4143 states have call successors, (4153) [2022-11-23 15:20:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12522 states to 12522 states and 17979 transitions. [2022-11-23 15:20:30,831 INFO L78 Accepts]: Start accepts. Automaton has 12522 states and 17979 transitions. Word has length 143 [2022-11-23 15:20:30,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:30,832 INFO L495 AbstractCegarLoop]: Abstraction has 12522 states and 17979 transitions. [2022-11-23 15:20:30,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-23 15:20:30,832 INFO L276 IsEmpty]: Start isEmpty. Operand 12522 states and 17979 transitions. [2022-11-23 15:20:30,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-23 15:20:30,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:30,839 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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] [2022-11-23 15:20:30,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:20:30,840 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:20:30,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:30,840 INFO L85 PathProgramCache]: Analyzing trace with hash -474583644, now seen corresponding path program 1 times [2022-11-23 15:20:30,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:30,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501840075] [2022-11-23 15:20:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:30,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-11-23 15:20:31,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:31,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501840075] [2022-11-23 15:20:31,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501840075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:31,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:31,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:20:31,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901076430] [2022-11-23 15:20:31,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:31,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:20:31,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:31,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:20:31,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:20:31,971 INFO L87 Difference]: Start difference. First operand 12522 states and 17979 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 15:20:37,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:37,435 INFO L93 Difference]: Finished difference Result 12528 states and 17984 transitions. [2022-11-23 15:20:37,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:20:37,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 148 [2022-11-23 15:20:37,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:37,501 INFO L225 Difference]: With dead ends: 12528 [2022-11-23 15:20:37,501 INFO L226 Difference]: Without dead ends: 12526 [2022-11-23 15:20:37,512 INFO L412 NwaCegarLoop]: 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 [2022-11-23 15:20:37,513 INFO L413 NwaCegarLoop]: 2282 mSDtfsCounter, 2574 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2580 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:37,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2580 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-23 15:20:37,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12526 states. [2022-11-23 15:20:38,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12526 to 12526. [2022-11-23 15:20:38,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12526 states, 7425 states have (on average 1.303973063973064) internal successors, (9682), 7805 states have internal predecessors, (9682), 4147 states have call successors, (4147), 962 states have call predecessors, (4147), 951 states have return successors, (4153), 3946 states have call predecessors, (4153), 4143 states have call successors, (4153) [2022-11-23 15:20:38,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12526 states to 12526 states and 17982 transitions. [2022-11-23 15:20:38,378 INFO L78 Accepts]: Start accepts. Automaton has 12526 states and 17982 transitions. Word has length 148 [2022-11-23 15:20:38,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:38,379 INFO L495 AbstractCegarLoop]: Abstraction has 12526 states and 17982 transitions. [2022-11-23 15:20:38,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 15:20:38,379 INFO L276 IsEmpty]: Start isEmpty. Operand 12526 states and 17982 transitions. [2022-11-23 15:20:38,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 15:20:38,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:38,389 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:20:38,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:20:38,389 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:20:38,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:38,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1446497990, now seen corresponding path program 1 times [2022-11-23 15:20:38,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:38,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149400896] [2022-11-23 15:20:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:38,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-23 15:20:39,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:39,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149400896] [2022-11-23 15:20:39,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149400896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:39,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:39,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:20:39,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969246425] [2022-11-23 15:20:39,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:39,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:20:39,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:39,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:20:39,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:20:39,577 INFO L87 Difference]: Start difference. First operand 12526 states and 17982 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-23 15:20:45,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:45,456 INFO L93 Difference]: Finished difference Result 12532 states and 17987 transitions. [2022-11-23 15:20:45,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:20:45,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 157 [2022-11-23 15:20:45,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:45,509 INFO L225 Difference]: With dead ends: 12532 [2022-11-23 15:20:45,510 INFO L226 Difference]: Without dead ends: 12530 [2022-11-23 15:20:45,518 INFO L412 NwaCegarLoop]: 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 [2022-11-23 15:20:45,519 INFO L413 NwaCegarLoop]: 2282 mSDtfsCounter, 2573 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2578 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:45,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2578 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-23 15:20:45,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12530 states. [2022-11-23 15:20:46,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12530 to 12530. [2022-11-23 15:20:46,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12530 states, 7428 states have (on average 1.303850296176629) internal successors, (9685), 7808 states have internal predecessors, (9685), 4147 states have call successors, (4147), 963 states have call predecessors, (4147), 952 states have return successors, (4153), 3946 states have call predecessors, (4153), 4143 states have call successors, (4153) [2022-11-23 15:20:46,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12530 states to 12530 states and 17985 transitions. [2022-11-23 15:20:46,515 INFO L78 Accepts]: Start accepts. Automaton has 12530 states and 17985 transitions. Word has length 157 [2022-11-23 15:20:46,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:46,516 INFO L495 AbstractCegarLoop]: Abstraction has 12530 states and 17985 transitions. [2022-11-23 15:20:46,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-23 15:20:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 12530 states and 17985 transitions. [2022-11-23 15:20:46,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-23 15:20:46,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:46,525 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 7, 7, 6, 6, 6, 6, 6, 6, 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] [2022-11-23 15:20:46,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:20:46,525 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:20:46,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:46,526 INFO L85 PathProgramCache]: Analyzing trace with hash -182478490, now seen corresponding path program 1 times [2022-11-23 15:20:46,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:46,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683415856] [2022-11-23 15:20:46,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:46,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-11-23 15:20:47,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:47,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683415856] [2022-11-23 15:20:47,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683415856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:47,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:47,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:20:47,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179715934] [2022-11-23 15:20:47,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:47,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:20:47,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:47,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:20:47,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:20:47,568 INFO L87 Difference]: Start difference. First operand 12530 states and 17985 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 15:20:52,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:52,779 INFO L93 Difference]: Finished difference Result 12536 states and 17990 transitions. [2022-11-23 15:20:52,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:20:52,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 161 [2022-11-23 15:20:52,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:52,821 INFO L225 Difference]: With dead ends: 12536 [2022-11-23 15:20:52,821 INFO L226 Difference]: Without dead ends: 12534 [2022-11-23 15:20:52,828 INFO L412 NwaCegarLoop]: 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 [2022-11-23 15:20:52,828 INFO L413 NwaCegarLoop]: 2282 mSDtfsCounter, 2573 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2577 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:52,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2577 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-23 15:20:52,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12534 states. [2022-11-23 15:20:53,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12534 to 12534. [2022-11-23 15:20:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12534 states, 7431 states have (on average 1.303727627506392) internal successors, (9688), 7811 states have internal predecessors, (9688), 4147 states have call successors, (4147), 964 states have call predecessors, (4147), 953 states have return successors, (4153), 3946 states have call predecessors, (4153), 4143 states have call successors, (4153) [2022-11-23 15:20:53,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12534 states to 12534 states and 17988 transitions. [2022-11-23 15:20:53,645 INFO L78 Accepts]: Start accepts. Automaton has 12534 states and 17988 transitions. Word has length 161 [2022-11-23 15:20:53,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:53,645 INFO L495 AbstractCegarLoop]: Abstraction has 12534 states and 17988 transitions. [2022-11-23 15:20:53,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 15:20:53,646 INFO L276 IsEmpty]: Start isEmpty. Operand 12534 states and 17988 transitions. [2022-11-23 15:20:53,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-23 15:20:53,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:53,656 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 8, 8, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:20:53,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 15:20:53,657 INFO L420 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)] === [2022-11-23 15:20:53,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:53,657 INFO L85 PathProgramCache]: Analyzing trace with hash 563909978, now seen corresponding path program 1 times [2022-11-23 15:20:53,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:53,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291076480] [2022-11-23 15:20:53,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:53,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-23 15:20:54,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:54,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291076480] [2022-11-23 15:20:54,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291076480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:54,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:54,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:20:54,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215481590] [2022-11-23 15:20:54,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:54,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:20:54,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:54,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:20:54,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:20:54,774 INFO L87 Difference]: Start difference. First operand 12534 states and 17988 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 15:21:01,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:01,310 INFO L93 Difference]: Finished difference Result 12540 states and 17993 transitions. [2022-11-23 15:21:01,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:21:01,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 167 [2022-11-23 15:21:01,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:01,366 INFO L225 Difference]: With dead ends: 12540 [2022-11-23 15:21:01,366 INFO L226 Difference]: Without dead ends: 12538 [2022-11-23 15:21:01,372 INFO L412 NwaCegarLoop]: 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 [2022-11-23 15:21:01,373 INFO L413 NwaCegarLoop]: 2282 mSDtfsCounter, 2573 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2576 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:01,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2576 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-23 15:21:01,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12538 states. [2022-11-23 15:21:02,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12538 to 12538. [2022-11-23 15:21:02,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12538 states, 7434 states have (on average 1.303605057842346) internal successors, (9691), 7814 states have internal predecessors, (9691), 4147 states have call successors, (4147), 965 states have call predecessors, (4147), 954 states have return successors, (4153), 3946 states have call predecessors, (4153), 4143 states have call successors, (4153) [2022-11-23 15:21:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12538 states to 12538 states and 17991 transitions. [2022-11-23 15:21:02,495 INFO L78 Accepts]: Start accepts. Automaton has 12538 states and 17991 transitions. Word has length 167 [2022-11-23 15:21:02,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:02,495 INFO L495 AbstractCegarLoop]: Abstraction has 12538 states and 17991 transitions. [2022-11-23 15:21:02,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 15:21:02,496 INFO L276 IsEmpty]: Start isEmpty. Operand 12538 states and 17991 transitions. [2022-11-23 15:21:02,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-23 15:21:02,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:02,506 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2022-11-23 15:21:02,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 15:21:02,506 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:21:02,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:02,507 INFO L85 PathProgramCache]: Analyzing trace with hash 165033188, now seen corresponding path program 1 times [2022-11-23 15:21:02,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:02,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649100352] [2022-11-23 15:21:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:02,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-11-23 15:21:03,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:03,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649100352] [2022-11-23 15:21:03,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649100352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:21:03,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:21:03,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:21:03,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645784260] [2022-11-23 15:21:03,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:21:03,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:21:03,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:03,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:21:03,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:21:03,674 INFO L87 Difference]: Start difference. First operand 12538 states and 17991 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 15:21:09,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:09,950 INFO L93 Difference]: Finished difference Result 12544 states and 17996 transitions. [2022-11-23 15:21:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:21:09,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 168 [2022-11-23 15:21:09,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:09,995 INFO L225 Difference]: With dead ends: 12544 [2022-11-23 15:21:09,995 INFO L226 Difference]: Without dead ends: 12542 [2022-11-23 15:21:10,003 INFO L412 NwaCegarLoop]: 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 [2022-11-23 15:21:10,003 INFO L413 NwaCegarLoop]: 2282 mSDtfsCounter, 2574 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2576 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:10,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2576 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-23 15:21:10,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12542 states. [2022-11-23 15:21:10,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12542 to 12542. [2022-11-23 15:21:10,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12542 states, 7437 states have (on average 1.3034825870646767) internal successors, (9694), 7817 states have internal predecessors, (9694), 4147 states have call successors, (4147), 966 states have call predecessors, (4147), 955 states have return successors, (4153), 3946 states have call predecessors, (4153), 4143 states have call successors, (4153) [2022-11-23 15:21:10,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12542 states to 12542 states and 17994 transitions. [2022-11-23 15:21:10,950 INFO L78 Accepts]: Start accepts. Automaton has 12542 states and 17994 transitions. Word has length 168 [2022-11-23 15:21:10,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:10,951 INFO L495 AbstractCegarLoop]: Abstraction has 12542 states and 17994 transitions. [2022-11-23 15:21:10,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 15:21:10,951 INFO L276 IsEmpty]: Start isEmpty. Operand 12542 states and 17994 transitions. [2022-11-23 15:21:10,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-23 15:21:10,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:10,959 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:21:10,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 15:21:10,959 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:21:10,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:10,960 INFO L85 PathProgramCache]: Analyzing trace with hash -179568262, now seen corresponding path program 1 times [2022-11-23 15:21:10,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:10,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597706594] [2022-11-23 15:21:10,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:10,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:11,984 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2022-11-23 15:21:11,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:11,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597706594] [2022-11-23 15:21:11,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597706594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:21:11,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:21:11,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:21:11,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914479621] [2022-11-23 15:21:11,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:21:11,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:21:11,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:11,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:21:11,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:21:11,987 INFO L87 Difference]: Start difference. First operand 12542 states and 17994 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-23 15:21:18,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:18,679 INFO L93 Difference]: Finished difference Result 13394 states and 18939 transitions. [2022-11-23 15:21:18,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:21:18,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2022-11-23 15:21:18,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:18,739 INFO L225 Difference]: With dead ends: 13394 [2022-11-23 15:21:18,740 INFO L226 Difference]: Without dead ends: 13390 [2022-11-23 15:21:18,750 INFO L412 NwaCegarLoop]: 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 [2022-11-23 15:21:18,750 INFO L413 NwaCegarLoop]: 2326 mSDtfsCounter, 2107 mSDsluCounter, 5194 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 7520 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:18,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 7520 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-23 15:21:18,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13390 states. [2022-11-23 15:21:19,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13390 to 13390. [2022-11-23 15:21:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13390 states, 7913 states have (on average 1.2954631618855048) internal successors, (10251), 8312 states have internal predecessors, (10251), 4339 states have call successors, (4339), 1147 states have call predecessors, (4339), 1135 states have return successors, (4345), 4132 states have call predecessors, (4345), 4335 states have call successors, (4345) [2022-11-23 15:21:19,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13390 states to 13390 states and 18935 transitions. [2022-11-23 15:21:19,788 INFO L78 Accepts]: Start accepts. Automaton has 13390 states and 18935 transitions. Word has length 177 [2022-11-23 15:21:19,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:19,789 INFO L495 AbstractCegarLoop]: Abstraction has 13390 states and 18935 transitions. [2022-11-23 15:21:19,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-23 15:21:19,789 INFO L276 IsEmpty]: Start isEmpty. Operand 13390 states and 18935 transitions. [2022-11-23 15:21:19,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-23 15:21:19,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:19,796 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 6, 6, 6, 6, 6, 6, 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] [2022-11-23 15:21:19,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 15:21:19,796 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:21:19,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:19,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1886210982, now seen corresponding path program 1 times [2022-11-23 15:21:19,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:19,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15461672] [2022-11-23 15:21:19,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:19,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2022-11-23 15:21:20,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:20,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15461672] [2022-11-23 15:21:20,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15461672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:21:20,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:21:20,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:21:20,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670721964] [2022-11-23 15:21:20,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:21:20,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:21:20,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:20,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:21:20,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:21:20,642 INFO L87 Difference]: Start difference. First operand 13390 states and 18935 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 15:21:25,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:25,485 INFO L93 Difference]: Finished difference Result 13390 states and 18935 transitions. [2022-11-23 15:21:25,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:21:25,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 181 [2022-11-23 15:21:25,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:25,539 INFO L225 Difference]: With dead ends: 13390 [2022-11-23 15:21:25,539 INFO L226 Difference]: Without dead ends: 13291 [2022-11-23 15:21:25,547 INFO L412 NwaCegarLoop]: 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 [2022-11-23 15:21:25,548 INFO L413 NwaCegarLoop]: 2280 mSDtfsCounter, 2569 mSDsluCounter, 4544 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2569 SdHoareTripleChecker+Valid, 6824 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:25,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2569 Valid, 6824 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-23 15:21:25,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13291 states. [2022-11-23 15:21:26,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13291 to 13291. [2022-11-23 15:21:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13291 states, 7869 states have (on average 1.2955902910153767) internal successors, (10195), 8256 states have internal predecessors, (10195), 4300 states have call successors, (4300), 1130 states have call predecessors, (4300), 1120 states have return successors, (4310), 4106 states have call predecessors, (4310), 4300 states have call successors, (4310) [2022-11-23 15:21:26,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13291 states to 13291 states and 18805 transitions. [2022-11-23 15:21:26,627 INFO L78 Accepts]: Start accepts. Automaton has 13291 states and 18805 transitions. Word has length 181 [2022-11-23 15:21:26,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:26,628 INFO L495 AbstractCegarLoop]: Abstraction has 13291 states and 18805 transitions. [2022-11-23 15:21:26,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 15:21:26,628 INFO L276 IsEmpty]: Start isEmpty. Operand 13291 states and 18805 transitions. [2022-11-23 15:21:26,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-23 15:21:26,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:26,638 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 4, 3, 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] [2022-11-23 15:21:26,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 15:21:26,639 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:21:26,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:26,639 INFO L85 PathProgramCache]: Analyzing trace with hash 988497171, now seen corresponding path program 1 times [2022-11-23 15:21:26,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:26,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955257950] [2022-11-23 15:21:26,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:26,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:27,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:27,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955257950] [2022-11-23 15:21:27,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 15:21:27,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421640950] [2022-11-23 15:21:27,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:27,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:21:27,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:21:27,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:21:27,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:21:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:29,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 8919 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:21:29,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:21:29,535 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-23 15:21:29,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:21:29,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421640950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:21:29,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:21:29,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:21:29,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596432732] [2022-11-23 15:21:29,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:21:29,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:21:29,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:29,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:21:29,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:21:29,541 INFO L87 Difference]: Start difference. First operand 13291 states and 18805 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-23 15:21:36,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:36,631 INFO L93 Difference]: Finished difference Result 23543 states and 33183 transitions. [2022-11-23 15:21:36,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:21:36,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 232 [2022-11-23 15:21:36,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:36,661 INFO L225 Difference]: With dead ends: 23543 [2022-11-23 15:21:36,661 INFO L226 Difference]: Without dead ends: 10265 [2022-11-23 15:21:36,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:21:36,720 INFO L413 NwaCegarLoop]: 3905 mSDtfsCounter, 2015 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 6109 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:36,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2015 Valid, 6109 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-23 15:21:36,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10265 states. [2022-11-23 15:21:37,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10265 to 10257. [2022-11-23 15:21:37,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10257 states, 6133 states have (on average 1.2882765367683027) internal successors, (7901), 6428 states have internal predecessors, (7901), 3204 states have call successors, (3204), 923 states have call predecessors, (3204), 918 states have return successors, (3211), 3065 states have call predecessors, (3211), 3204 states have call successors, (3211) [2022-11-23 15:21:37,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10257 states to 10257 states and 14316 transitions. [2022-11-23 15:21:37,891 INFO L78 Accepts]: Start accepts. Automaton has 10257 states and 14316 transitions. Word has length 232 [2022-11-23 15:21:37,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:37,892 INFO L495 AbstractCegarLoop]: Abstraction has 10257 states and 14316 transitions. [2022-11-23 15:21:37,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-23 15:21:37,892 INFO L276 IsEmpty]: Start isEmpty. Operand 10257 states and 14316 transitions. [2022-11-23 15:21:37,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-23 15:21:37,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:37,899 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:21:37,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:21:38,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 15:21:38,115 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:21:38,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:38,116 INFO L85 PathProgramCache]: Analyzing trace with hash 991731167, now seen corresponding path program 1 times [2022-11-23 15:21:38,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:38,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151098848] [2022-11-23 15:21:38,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:38,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:38,367 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:21:38,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507535008] [2022-11-23 15:21:38,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:38,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:21:38,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:21:38,370 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:21:38,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:21:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:40,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 9191 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:21:40,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:21:40,840 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-23 15:21:40,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:21:40,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:40,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151098848] [2022-11-23 15:21:40,841 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:21:40,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507535008] [2022-11-23 15:21:40,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507535008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:21:40,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:21:40,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:21:40,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846580000] [2022-11-23 15:21:40,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:21:40,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:21:40,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:40,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:21:40,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:21:40,843 INFO L87 Difference]: Start difference. First operand 10257 states and 14316 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-23 15:21:47,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:47,003 INFO L93 Difference]: Finished difference Result 23920 states and 33342 transitions. [2022-11-23 15:21:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:21:47,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 279 [2022-11-23 15:21:47,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:47,047 INFO L225 Difference]: With dead ends: 23920 [2022-11-23 15:21:47,048 INFO L226 Difference]: Without dead ends: 13746 [2022-11-23 15:21:47,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:21:47,076 INFO L413 NwaCegarLoop]: 3898 mSDtfsCounter, 2019 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 6094 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:47,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 6094 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-23 15:21:47,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13746 states. [2022-11-23 15:21:48,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13746 to 13738. [2022-11-23 15:21:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13738 states, 8236 states have (on average 1.285939776590578) internal successors, (10591), 8631 states have internal predecessors, (10591), 4234 states have call successors, (4234), 1271 states have call predecessors, (4234), 1266 states have return successors, (4243), 4053 states have call predecessors, (4243), 4234 states have call successors, (4243) [2022-11-23 15:21:48,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13738 states to 13738 states and 19068 transitions. [2022-11-23 15:21:48,112 INFO L78 Accepts]: Start accepts. Automaton has 13738 states and 19068 transitions. Word has length 279 [2022-11-23 15:21:48,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:48,112 INFO L495 AbstractCegarLoop]: Abstraction has 13738 states and 19068 transitions. [2022-11-23 15:21:48,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-23 15:21:48,113 INFO L276 IsEmpty]: Start isEmpty. Operand 13738 states and 19068 transitions. [2022-11-23 15:21:48,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-11-23 15:21:48,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:48,118 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:21:48,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:21:48,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 15:21:48,319 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:21:48,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:48,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1935138664, now seen corresponding path program 1 times [2022-11-23 15:21:48,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:48,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942026334] [2022-11-23 15:21:48,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:48,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:48,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:48,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942026334] [2022-11-23 15:21:48,694 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 15:21:48,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990284249] [2022-11-23 15:21:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:48,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:21:48,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:21:48,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:21:48,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:21:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:51,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 9398 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:21:51,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:21:51,211 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-23 15:21:51,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:21:51,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990284249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:21:51,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:21:51,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:21:51,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244319288] [2022-11-23 15:21:51,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:21:51,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:21:51,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:21:51,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:21:51,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:21:51,214 INFO L87 Difference]: Start difference. First operand 13738 states and 19068 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-23 15:21:56,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:56,226 INFO L93 Difference]: Finished difference Result 28577 states and 40060 transitions. [2022-11-23 15:21:56,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:21:56,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 339 [2022-11-23 15:21:56,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:56,295 INFO L225 Difference]: With dead ends: 28577 [2022-11-23 15:21:56,295 INFO L226 Difference]: Without dead ends: 14922 [2022-11-23 15:21:56,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:21:56,345 INFO L413 NwaCegarLoop]: 2343 mSDtfsCounter, 125 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 4595 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:56,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 4595 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-23 15:21:56,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14922 states. [2022-11-23 15:21:58,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14922 to 13893. [2022-11-23 15:21:58,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13893 states, 8328 states have (on average 1.2877041306436119) internal successors, (10724), 8743 states have internal predecessors, (10724), 4296 states have call successors, (4296), 1271 states have call predecessors, (4296), 1267 states have return successors, (4306), 4100 states have call predecessors, (4306), 4296 states have call successors, (4306) [2022-11-23 15:21:58,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13893 states to 13893 states and 19326 transitions. [2022-11-23 15:21:58,335 INFO L78 Accepts]: Start accepts. Automaton has 13893 states and 19326 transitions. Word has length 339 [2022-11-23 15:21:58,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:58,335 INFO L495 AbstractCegarLoop]: Abstraction has 13893 states and 19326 transitions. [2022-11-23 15:21:58,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-23 15:21:58,336 INFO L276 IsEmpty]: Start isEmpty. Operand 13893 states and 19326 transitions. [2022-11-23 15:21:58,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-11-23 15:21:58,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:58,342 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:21:58,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:21:58,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 15:21:58,543 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:21:58,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:58,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1671608232, now seen corresponding path program 1 times [2022-11-23 15:21:58,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:58,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054143884] [2022-11-23 15:21:58,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:58,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:58,807 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:21:58,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761213360] [2022-11-23 15:21:58,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:58,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:21:58,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:21:58,827 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:21:58,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20dcc66-3e61-43e8-8404-b9942f7dd5fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:22:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:22:01,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 9404 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:22:01,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:22:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-23 15:22:01,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:22:01,762 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-11-23 15:22:01,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:22:01,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054143884] [2022-11-23 15:22:01,763 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:22:01,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761213360] [2022-11-23 15:22:01,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761213360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:22:01,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [844046322] [2022-11-23 15:22:01,794 INFO L159 IcfgInterpreter]: Started Sifa with 223 locations of interest [2022-11-23 15:22:01,794 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:22:01,799 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:22:01,804 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:22:01,805 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:27:45,215 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 11800 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 15:27:53,499 WARN L233 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 11800 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 15:28:03,103 WARN L233 SmtUtils]: Spent 9.47s on a formula simplification. DAG size of input: 11981 DAG size of output: 11800 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 15:28:11,692 WARN L233 SmtUtils]: Spent 8.41s on a formula simplification that was a NOOP. DAG size: 11800 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 15:28:20,169 WARN L233 SmtUtils]: Spent 8.42s on a formula simplification that was a NOOP. DAG size: 11800 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 15:28:29,725 WARN L233 SmtUtils]: Spent 9.50s on a formula simplification. DAG size of input: 11981 DAG size of output: 11800 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 15:31:50,119 WARN L233 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 11800 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 15:31:58,268 WARN L233 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 11800 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 15:32:07,459 WARN L233 SmtUtils]: Spent 9.09s on a formula simplification. DAG size of input: 11981 DAG size of output: 11800 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 15:32:15,617 WARN L233 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 11800 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 15:32:23,734 WARN L233 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 11800 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 15:32:32,833 WARN L233 SmtUtils]: Spent 9.03s on a formula simplification. DAG size of input: 11981 DAG size of output: 11800 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)