./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 b5237d83 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_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/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_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba --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-b5237d8 [2022-11-22 02:15:31,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:15:31,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:15:31,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:15:31,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:15:31,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:15:31,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:15:31,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:15:31,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:15:31,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:15:31,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:15:31,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:15:31,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:15:31,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:15:31,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:15:31,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:15:31,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:15:31,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:15:31,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:15:31,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:15:31,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:15:31,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:15:31,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:15:31,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:15:31,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:15:31,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:15:31,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:15:31,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:15:31,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:15:31,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:15:31,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:15:31,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:15:31,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:15:31,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:15:31,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:15:31,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:15:31,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:15:31,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:15:31,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:15:31,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:15:31,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:15:31,479 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:15:31,499 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:15:31,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:15:31,500 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:15:31,500 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:15:31,501 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:15:31,501 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:15:31,502 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:15:31,502 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:15:31,502 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:15:31,502 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:15:31,503 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:15:31,503 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:15:31,503 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:15:31,503 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:15:31,503 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:15:31,504 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:15:31,504 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:15:31,504 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:15:31,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:15:31,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:15:31,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:15:31,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:15:31,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:15:31,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:15:31,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:15:31,506 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:15:31,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:15:31,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:15:31,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:15:31,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:15:31,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:15:31,508 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:15:31,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:15:31,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:15:31,509 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:15:31,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:15:31,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:15:31,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:15:31,510 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_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03e2d0e28997af6c53edeab79acb28db60116030b3545ebb50af81c3e69fe889 [2022-11-22 02:15:31,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:15:31,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:15:31,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:15:31,855 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:15:31,855 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:15:31,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i [2022-11-22 02:15:35,153 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:15:36,004 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:15:36,005 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i [2022-11-22 02:15:36,069 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/data/98ebb18c3/dafafe4707ad4d668bc0481641faa256/FLAG103c4c5ca [2022-11-22 02:15:36,094 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/data/98ebb18c3/dafafe4707ad4d668bc0481641faa256 [2022-11-22 02:15:36,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:15:36,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:15:36,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:15:36,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:15:36,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:15:36,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:15:36" (1/1) ... [2022-11-22 02:15:36,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@471546b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:36, skipping insertion in model container [2022-11-22 02:15:36,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:15:36" (1/1) ... [2022-11-22 02:15:36,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:15:36,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:15:41,178 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_166b32e4-a030-4442-aef9-1a292bdc9e53/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] [2022-11-22 02:15:41,185 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_166b32e4-a030-4442-aef9-1a292bdc9e53/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] [2022-11-22 02:15:41,186 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_166b32e4-a030-4442-aef9-1a292bdc9e53/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] [2022-11-22 02:15:41,187 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_166b32e4-a030-4442-aef9-1a292bdc9e53/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] [2022-11-22 02:15:41,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:15:41,382 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:15:42,107 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_166b32e4-a030-4442-aef9-1a292bdc9e53/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] [2022-11-22 02:15:42,108 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_166b32e4-a030-4442-aef9-1a292bdc9e53/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] [2022-11-22 02:15:42,109 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_166b32e4-a030-4442-aef9-1a292bdc9e53/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] [2022-11-22 02:15:42,110 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_166b32e4-a030-4442-aef9-1a292bdc9e53/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] [2022-11-22 02:15:42,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:15:42,481 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:15:42,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:42 WrapperNode [2022-11-22 02:15:42,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:15:42,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:15:42,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:15:42,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:15:42,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:42" (1/1) ... [2022-11-22 02:15:42,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:42" (1/1) ... [2022-11-22 02:15:43,050 INFO L138 Inliner]: procedures = 578, calls = 6434, calls flagged for inlining = 254, calls inlined = 233, statements flattened = 8805 [2022-11-22 02:15:43,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:15:43,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:15:43,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:15:43,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:15:43,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:42" (1/1) ... [2022-11-22 02:15:43,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:42" (1/1) ... [2022-11-22 02:15:43,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:42" (1/1) ... [2022-11-22 02:15:43,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:42" (1/1) ... [2022-11-22 02:15:43,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:42" (1/1) ... [2022-11-22 02:15:43,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:42" (1/1) ... [2022-11-22 02:15:43,482 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:42" (1/1) ... [2022-11-22 02:15:43,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:42" (1/1) ... [2022-11-22 02:15:43,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:15:43,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:15:43,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:15:43,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:15:43,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:42" (1/1) ... [2022-11-22 02:15:43,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:15:43,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:15:43,682 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:15:43,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:15:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2022-11-22 02:15:43,727 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2022-11-22 02:15:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_eth_tx_timeout [2022-11-22 02:15:43,727 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_eth_tx_timeout [2022-11-22 02:15:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-22 02:15:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 02:15:43,728 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 02:15:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 02:15:43,728 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 02:15:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_trigger [2022-11-22 02:15:43,729 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_trigger [2022-11-22 02:15:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 02:15:43,729 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 02:15:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 02:15:43,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 02:15:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_slock_of_NOT_ARG_SIGN [2022-11-22 02:15:43,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_slock_of_NOT_ARG_SIGN [2022-11-22 02:15:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_mib_mode_helper [2022-11-22 02:15:43,731 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_mib_mode_helper [2022-11-22 02:15:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:15:43,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:15:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 02:15:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 02:15:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-22 02:15:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-22 02:15:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-11-22 02:15:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-11-22 02:15:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_slock_of_NOT_ARG_SIGN [2022-11-22 02:15:43,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_slock_of_NOT_ARG_SIGN [2022-11-22 02:15:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set_request [2022-11-22 02:15:43,736 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set_request [2022-11-22 02:15:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2022-11-22 02:15:43,737 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2022-11-22 02:15:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-22 02:15:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_get_state [2022-11-22 02:15:43,738 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_get_state [2022-11-22 02:15:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 02:15:43,738 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 02:15:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 02:15:43,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 02:15:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 02:15:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 02:15:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 02:15:43,740 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 02:15:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_release [2022-11-22 02:15:43,740 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_release [2022-11-22 02:15:43,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 02:15:43,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 02:15:43,741 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 02:15:43,741 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 02:15:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:15:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure send_simple_event [2022-11-22 02:15:43,742 INFO L138 BoogieDeclarations]: Found implementation of procedure send_simple_event [2022-11-22 02:15:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-22 02:15:43,743 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-22 02:15:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-22 02:15:43,743 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-22 02:15:43,743 INFO L130 BoogieDeclarations]: Found specification of procedure send_formatted_event [2022-11-22 02:15:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure send_formatted_event [2022-11-22 02:15:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set [2022-11-22 02:15:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set [2022-11-22 02:15:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 02:15:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 02:15:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 02:15:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_reset [2022-11-22 02:15:43,745 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_reset [2022-11-22 02:15:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 02:15:43,745 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 02:15:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-22 02:15:43,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-22 02:15:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2022-11-22 02:15:43,747 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2022-11-22 02:15:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 02:15:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 02:15:43,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 02:15:43,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:15:43,749 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 02:15:43,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 02:15:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 02:15:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 02:15:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 02:15:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 02:15:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 02:15:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 02:15:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_open [2022-11-22 02:15:43,752 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_open [2022-11-22 02:15:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_resume [2022-11-22 02:15:43,752 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_resume [2022-11-22 02:15:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 02:15:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 02:15:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:15:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:15:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:15:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 02:15:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 02:15:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 02:15:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 02:15:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2022-11-22 02:15:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2022-11-22 02:15:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-22 02:15:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-22 02:15:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:15:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 02:15:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 02:15:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 02:15:43,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 02:15:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:15:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 02:15:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:15:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:15:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-22 02:15:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-22 02:15:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 02:15:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 02:15:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-22 02:15:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-22 02:15:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 02:15:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 02:15:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-22 02:15:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-22 02:15:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 02:15:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 02:15:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2022-11-22 02:15:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2022-11-22 02:15:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-22 02:15:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-22 02:15:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-22 02:15:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-22 02:15:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_prism54_module_exit_12_2 [2022-11-22 02:15:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_prism54_module_exit_12_2 [2022-11-22 02:15:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2022-11-22 02:15:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2022-11-22 02:15:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-22 02:15:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-22 02:15:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:15:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:15:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2022-11-22 02:15:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2022-11-22 02:15:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-22 02:15:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-22 02:15:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-22 02:15:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-22 02:15:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_clear_mac [2022-11-22 02:15:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_clear_mac [2022-11-22 02:15:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_wpa_bss_ie_get [2022-11-22 02:15:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_wpa_bss_ie_get [2022-11-22 02:15:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 02:15:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 02:15:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 02:15:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 02:15:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:15:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:15:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-22 02:15:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-22 02:15:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-22 02:15:43,781 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-22 02:15:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure handle_request [2022-11-22 02:15:43,781 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_request [2022-11-22 02:15:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_bring_down [2022-11-22 02:15:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_bring_down [2022-11-22 02:15:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2022-11-22 02:15:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2022-11-22 02:15:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-22 02:15:43,783 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-22 02:15:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 02:15:43,783 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 02:15:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 02:15:43,783 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 02:15:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 02:15:43,784 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 02:15:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-22 02:15:43,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-22 02:15:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 02:15:43,784 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 02:15:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-22 02:15:43,785 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-22 02:15:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:15:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 02:15:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 02:15:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_set_state [2022-11-22 02:15:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_set_state [2022-11-22 02:15:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2022-11-22 02:15:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2022-11-22 02:15:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:15:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set_varlen [2022-11-22 02:15:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set_varlen [2022-11-22 02:15:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2022-11-22 02:15:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2022-11-22 02:15:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2022-11-22 02:15:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2022-11-22 02:15:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:15:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_close [2022-11-22 02:15:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_close [2022-11-22 02:15:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-22 02:15:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-22 02:15:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_get_request [2022-11-22 02:15:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_get_request [2022-11-22 02:15:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-22 02:15:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-22 02:15:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-22 02:15:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-22 02:15:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-22 02:15:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-22 02:15:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 02:15:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 02:15:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_remove [2022-11-22 02:15:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_remove [2022-11-22 02:15:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_w32_flush [2022-11-22 02:15:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_w32_flush [2022-11-22 02:15:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 02:15:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 02:15:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-22 02:15:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-22 02:15:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-22 02:15:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-22 02:15:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-22 02:15:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-22 02:15:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-22 02:15:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-22 02:15:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit_list [2022-11-22 02:15:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit_list [2022-11-22 02:15:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-22 02:15:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-22 02:15:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 02:15:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 02:15:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 02:15:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 02:15:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgmt_rx_fill [2022-11-22 02:15:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgmt_rx_fill [2022-11-22 02:15:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_transaction [2022-11-22 02:15:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_transaction [2022-11-22 02:15:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_61 [2022-11-22 02:15:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_61 [2022-11-22 02:15:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 02:15:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 02:15:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure channel_of_freq [2022-11-22 02:15:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure channel_of_freq [2022-11-22 02:15:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:15:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-22 02:15:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-22 02:15:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-22 02:15:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-22 02:15:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 02:15:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 02:15:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_free_memory [2022-11-22 02:15:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_free_memory [2022-11-22 02:15:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit [2022-11-22 02:15:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit [2022-11-22 02:15:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-22 02:15:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-22 02:15:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32s [2022-11-22 02:15:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32s [2022-11-22 02:15:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-22 02:15:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-22 02:15:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-22 02:15:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-22 02:15:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 02:15:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 02:15:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-22 02:15:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-22 02:15:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-22 02:15:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-22 02:15:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_in_queue [2022-11-22 02:15:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_in_queue [2022-11-22 02:15:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-22 02:15:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-22 02:15:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-22 02:15:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-22 02:15:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:15:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 02:15:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 02:15:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-22 02:15:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-22 02:15:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_disable_interrupts [2022-11-22 02:15:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_disable_interrupts [2022-11-22 02:15:45,122 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:15:45,126 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:15:45,750 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 02:15:55,798 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 02:15:56,229 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:15:58,441 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:15:58,441 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-22 02:15:58,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:15:58 BoogieIcfgContainer [2022-11-22 02:15:58,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:15:58,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:15:58,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:15:58,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:15:58,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:15:36" (1/3) ... [2022-11-22 02:15:58,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8e596a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:15:58, skipping insertion in model container [2022-11-22 02:15:58,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:42" (2/3) ... [2022-11-22 02:15:58,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8e596a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:15:58, skipping insertion in model container [2022-11-22 02:15:58,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:15:58" (3/3) ... [2022-11-22 02:15:58,460 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i [2022-11-22 02:15:58,487 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:15:58,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 02:15:58,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:15:58,654 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;@5cd60d91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:15:58,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 02:15:58,673 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) [2022-11-22 02:15:58,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-22 02:15:58,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:15:58,700 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] [2022-11-22 02:15:58,701 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)] === [2022-11-22 02:15:58,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:15:58,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1436494310, now seen corresponding path program 1 times [2022-11-22 02:15:58,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:15:58,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230981528] [2022-11-22 02:15:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:15:58,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:15:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:00,599 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-22 02:16:00,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:16:00,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230981528] [2022-11-22 02:16:00,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230981528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:16:00,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:16:00,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:16:00,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902040909] [2022-11-22 02:16:00,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:16:00,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:16:00,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:16:00,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:16:00,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:16:00,655 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) [2022-11-22 02:16:06,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:16:06,415 INFO L93 Difference]: Finished difference Result 5172 states and 7638 transitions. [2022-11-22 02:16:06,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:16:06,418 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 [2022-11-22 02:16:06,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:16:06,463 INFO L225 Difference]: With dead ends: 5172 [2022-11-22 02:16:06,463 INFO L226 Difference]: Without dead ends: 3345 [2022-11-22 02:16:06,482 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 [2022-11-22 02:16:06,486 INFO L413 NwaCegarLoop]: 2827 mSDtfsCounter, 2230 mSDsluCounter, 2276 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s 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, 5.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:16:06,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2230 Valid, 5103 Invalid, 688 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-22 02:16:06,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2022-11-22 02:16:06,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 3318. [2022-11-22 02:16:06,930 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) [2022-11-22 02:16:06,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3318 states to 3318 states and 4788 transitions. [2022-11-22 02:16:06,971 INFO L78 Accepts]: Start accepts. Automaton has 3318 states and 4788 transitions. Word has length 75 [2022-11-22 02:16:06,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:16:06,974 INFO L495 AbstractCegarLoop]: Abstraction has 3318 states and 4788 transitions. [2022-11-22 02:16:06,974 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) [2022-11-22 02:16:06,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3318 states and 4788 transitions. [2022-11-22 02:16:06,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 02:16:06,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:16:06,990 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] [2022-11-22 02:16:06,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:16:06,991 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)] === [2022-11-22 02:16:06,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:16:06,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1463730524, now seen corresponding path program 1 times [2022-11-22 02:16:06,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:16:06,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195852542] [2022-11-22 02:16:06,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:06,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:16:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-22 02:16:08,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:16:08,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195852542] [2022-11-22 02:16:08,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195852542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:16:08,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:16:08,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:16:08,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431294582] [2022-11-22 02:16:08,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:16:08,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:16:08,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:16:08,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:16:08,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:16:08,086 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) [2022-11-22 02:16:14,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:16:14,791 INFO L93 Difference]: Finished difference Result 9841 states and 14195 transitions. [2022-11-22 02:16:14,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:16:14,792 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 [2022-11-22 02:16:14,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:16:14,974 INFO L225 Difference]: With dead ends: 9841 [2022-11-22 02:16:14,981 INFO L226 Difference]: Without dead ends: 6536 [2022-11-22 02:16:14,999 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 [2022-11-22 02:16:15,000 INFO L413 NwaCegarLoop]: 2863 mSDtfsCounter, 2528 mSDsluCounter, 2249 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s 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, 6.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:16:15,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2528 Valid, 5112 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-22 02:16:15,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6536 states. [2022-11-22 02:16:15,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6536 to 6532. [2022-11-22 02:16:15,403 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) [2022-11-22 02:16:15,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 9410 transitions. [2022-11-22 02:16:15,456 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 9410 transitions. Word has length 81 [2022-11-22 02:16:15,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:16:15,459 INFO L495 AbstractCegarLoop]: Abstraction has 6532 states and 9410 transitions. [2022-11-22 02:16:15,459 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) [2022-11-22 02:16:15,460 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 9410 transitions. [2022-11-22 02:16:15,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-22 02:16:15,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:16:15,463 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] [2022-11-22 02:16:15,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:16:15,464 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)] === [2022-11-22 02:16:15,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:16:15,476 INFO L85 PathProgramCache]: Analyzing trace with hash 411773234, now seen corresponding path program 1 times [2022-11-22 02:16:15,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:16:15,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188753490] [2022-11-22 02:16:15,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:15,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:16:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-22 02:16:16,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:16:16,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188753490] [2022-11-22 02:16:16,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188753490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:16:16,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:16:16,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:16:16,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209257897] [2022-11-22 02:16:16,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:16:16,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:16:16,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:16:16,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:16:16,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:16:16,296 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) [2022-11-22 02:16:19,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:16:22,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:16:22,673 INFO L93 Difference]: Finished difference Result 19058 states and 27420 transitions. [2022-11-22 02:16:22,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:16:22,675 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 [2022-11-22 02:16:22,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:16:22,789 INFO L225 Difference]: With dead ends: 19058 [2022-11-22 02:16:22,790 INFO L226 Difference]: Without dead ends: 12539 [2022-11-22 02:16:22,838 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 [2022-11-22 02:16:22,844 INFO L413 NwaCegarLoop]: 2851 mSDtfsCounter, 2433 mSDsluCounter, 2219 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s 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, 5.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:16:22,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2433 Valid, 5070 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-22 02:16:22,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12539 states. [2022-11-22 02:16:23,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12539 to 12502. [2022-11-22 02:16:23,621 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) [2022-11-22 02:16:23,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12502 states to 12502 states and 17964 transitions. [2022-11-22 02:16:23,901 INFO L78 Accepts]: Start accepts. Automaton has 12502 states and 17964 transitions. Word has length 85 [2022-11-22 02:16:23,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:16:23,901 INFO L495 AbstractCegarLoop]: Abstraction has 12502 states and 17964 transitions. [2022-11-22 02:16:23,902 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) [2022-11-22 02:16:23,903 INFO L276 IsEmpty]: Start isEmpty. Operand 12502 states and 17964 transitions. [2022-11-22 02:16:23,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-22 02:16:23,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:16:23,916 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] [2022-11-22 02:16:23,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:16:23,917 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)] === [2022-11-22 02:16:23,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:16:23,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1600838985, now seen corresponding path program 1 times [2022-11-22 02:16:23,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:16:23,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46715029] [2022-11-22 02:16:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:23,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:16:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:25,488 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-22 02:16:25,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:16:25,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46715029] [2022-11-22 02:16:25,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46715029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:16:25,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:16:25,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:16:25,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129789408] [2022-11-22 02:16:25,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:16:25,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:16:25,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:16:25,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:16:25,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:16:25,498 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) [2022-11-22 02:16:31,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:16:31,534 INFO L93 Difference]: Finished difference Result 12508 states and 17969 transitions. [2022-11-22 02:16:31,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:16:31,535 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 [2022-11-22 02:16:31,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:16:31,639 INFO L225 Difference]: With dead ends: 12508 [2022-11-22 02:16:31,639 INFO L226 Difference]: Without dead ends: 12506 [2022-11-22 02:16:31,651 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 [2022-11-22 02:16:31,653 INFO L413 NwaCegarLoop]: 2279 mSDtfsCounter, 2579 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2590 SdHoareTripleChecker+Valid, 6824 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:16:31,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2590 Valid, 6824 Invalid, 1034 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-22 02:16:31,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12506 states. [2022-11-22 02:16:32,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12506 to 12506. [2022-11-22 02:16:32,657 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) [2022-11-22 02:16:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12506 states to 12506 states and 17967 transitions. [2022-11-22 02:16:32,726 INFO L78 Accepts]: Start accepts. Automaton has 12506 states and 17967 transitions. Word has length 123 [2022-11-22 02:16:32,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:16:32,727 INFO L495 AbstractCegarLoop]: Abstraction has 12506 states and 17967 transitions. [2022-11-22 02:16:32,727 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) [2022-11-22 02:16:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 12506 states and 17967 transitions. [2022-11-22 02:16:32,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-22 02:16:32,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:16:32,733 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] [2022-11-22 02:16:32,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:16:32,734 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)] === [2022-11-22 02:16:32,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:16:32,735 INFO L85 PathProgramCache]: Analyzing trace with hash -976664988, now seen corresponding path program 1 times [2022-11-22 02:16:32,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:16:32,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030353082] [2022-11-22 02:16:32,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:32,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:16:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-22 02:16:34,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:16:34,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030353082] [2022-11-22 02:16:34,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030353082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:16:34,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:16:34,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:16:34,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334079217] [2022-11-22 02:16:34,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:16:34,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:16:34,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:16:34,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:16:34,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:16:34,228 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) [2022-11-22 02:16:39,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:16:39,852 INFO L93 Difference]: Finished difference Result 12512 states and 17972 transitions. [2022-11-22 02:16:39,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:16:39,853 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 [2022-11-22 02:16:39,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:16:39,923 INFO L225 Difference]: With dead ends: 12512 [2022-11-22 02:16:39,924 INFO L226 Difference]: Without dead ends: 12510 [2022-11-22 02:16:39,933 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 [2022-11-22 02:16:39,934 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, 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, 5.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:16:39,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2584 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-22 02:16:39,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12510 states. [2022-11-22 02:16:40,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12510 to 12510. [2022-11-22 02:16:40,680 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) [2022-11-22 02:16:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12510 states to 12510 states and 17970 transitions. [2022-11-22 02:16:40,756 INFO L78 Accepts]: Start accepts. Automaton has 12510 states and 17970 transitions. Word has length 128 [2022-11-22 02:16:40,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:16:40,757 INFO L495 AbstractCegarLoop]: Abstraction has 12510 states and 17970 transitions. [2022-11-22 02:16:40,757 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) [2022-11-22 02:16:40,757 INFO L276 IsEmpty]: Start isEmpty. Operand 12510 states and 17970 transitions. [2022-11-22 02:16:40,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 02:16:40,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:16:40,765 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] [2022-11-22 02:16:40,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:16:40,765 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)] === [2022-11-22 02:16:40,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:16:40,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1395097350, now seen corresponding path program 1 times [2022-11-22 02:16:40,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:16:40,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269413118] [2022-11-22 02:16:40,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:40,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:16:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-11-22 02:16:42,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:16:42,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269413118] [2022-11-22 02:16:42,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269413118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:16:42,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:16:42,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:16:42,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889391015] [2022-11-22 02:16:42,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:16:42,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:16:42,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:16:42,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:16:42,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:16:42,225 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) [2022-11-22 02:16:47,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:16:49,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:16:51,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:16:51,105 INFO L93 Difference]: Finished difference Result 12516 states and 17975 transitions. [2022-11-22 02:16:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:16:51,106 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 [2022-11-22 02:16:51,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:16:51,187 INFO L225 Difference]: With dead ends: 12516 [2022-11-22 02:16:51,188 INFO L226 Difference]: Without dead ends: 12514 [2022-11-22 02:16:51,200 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 [2022-11-22 02:16:51,201 INFO L413 NwaCegarLoop]: 2282 mSDtfsCounter, 2573 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s 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, 8.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:16:51,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2582 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-22 02:16:51,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12514 states. [2022-11-22 02:16:52,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12514 to 12514. [2022-11-22 02:16:52,561 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) [2022-11-22 02:16:52,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12514 states to 12514 states and 17973 transitions. [2022-11-22 02:16:52,669 INFO L78 Accepts]: Start accepts. Automaton has 12514 states and 17973 transitions. Word has length 137 [2022-11-22 02:16:52,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:16:52,670 INFO L495 AbstractCegarLoop]: Abstraction has 12514 states and 17973 transitions. [2022-11-22 02:16:52,670 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) [2022-11-22 02:16:52,671 INFO L276 IsEmpty]: Start isEmpty. Operand 12514 states and 17973 transitions. [2022-11-22 02:16:52,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-22 02:16:52,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:16:52,683 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] [2022-11-22 02:16:52,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:16:52,684 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)] === [2022-11-22 02:16:52,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:16:52,685 INFO L85 PathProgramCache]: Analyzing trace with hash -981497471, now seen corresponding path program 1 times [2022-11-22 02:16:52,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:16:52,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514783142] [2022-11-22 02:16:52,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:52,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:16:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:54,139 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-11-22 02:16:54,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:16:54,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514783142] [2022-11-22 02:16:54,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514783142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:16:54,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:16:54,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:16:54,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17055829] [2022-11-22 02:16:54,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:16:54,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:16:54,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:16:54,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:16:54,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:16:54,143 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) [2022-11-22 02:17:01,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:17:01,231 INFO L93 Difference]: Finished difference Result 12520 states and 17978 transitions. [2022-11-22 02:17:01,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:17:01,236 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 [2022-11-22 02:17:01,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:17:01,313 INFO L225 Difference]: With dead ends: 12520 [2022-11-22 02:17:01,313 INFO L226 Difference]: Without dead ends: 12518 [2022-11-22 02:17:01,324 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 [2022-11-22 02:17:01,325 INFO L413 NwaCegarLoop]: 2282 mSDtfsCounter, 2573 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s 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, 6.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:17:01,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2581 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-22 02:17:01,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12518 states. [2022-11-22 02:17:02,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12518 to 12518. [2022-11-22 02:17:02,083 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) [2022-11-22 02:17:02,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12518 states to 12518 states and 17976 transitions. [2022-11-22 02:17:02,163 INFO L78 Accepts]: Start accepts. Automaton has 12518 states and 17976 transitions. Word has length 142 [2022-11-22 02:17:02,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:17:02,164 INFO L495 AbstractCegarLoop]: Abstraction has 12518 states and 17976 transitions. [2022-11-22 02:17:02,164 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) [2022-11-22 02:17:02,164 INFO L276 IsEmpty]: Start isEmpty. Operand 12518 states and 17976 transitions. [2022-11-22 02:17:02,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-22 02:17:02,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:02,173 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] [2022-11-22 02:17:02,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:17:02,174 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)] === [2022-11-22 02:17:02,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:02,175 INFO L85 PathProgramCache]: Analyzing trace with hash 5255799, now seen corresponding path program 1 times [2022-11-22 02:17:02,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:02,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500734089] [2022-11-22 02:17:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:02,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-22 02:17:03,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:03,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500734089] [2022-11-22 02:17:03,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500734089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:17:03,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:17:03,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:17:03,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258615172] [2022-11-22 02:17:03,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:17:03,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:17:03,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:17:03,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:17:03,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:17:03,613 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) [2022-11-22 02:17:08,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:17:10,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:17:10,853 INFO L93 Difference]: Finished difference Result 12524 states and 17981 transitions. [2022-11-22 02:17:10,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:17:10,854 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 [2022-11-22 02:17:10,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:17:10,927 INFO L225 Difference]: With dead ends: 12524 [2022-11-22 02:17:10,927 INFO L226 Difference]: Without dead ends: 12522 [2022-11-22 02:17:10,939 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 [2022-11-22 02:17:10,939 INFO L413 NwaCegarLoop]: 2282 mSDtfsCounter, 2574 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s 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, 6.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:17:10,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2581 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-22 02:17:10,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12522 states. [2022-11-22 02:17:11,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12522 to 12522. [2022-11-22 02:17:11,959 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) [2022-11-22 02:17:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12522 states to 12522 states and 17979 transitions. [2022-11-22 02:17:12,029 INFO L78 Accepts]: Start accepts. Automaton has 12522 states and 17979 transitions. Word has length 143 [2022-11-22 02:17:12,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:17:12,029 INFO L495 AbstractCegarLoop]: Abstraction has 12522 states and 17979 transitions. [2022-11-22 02:17:12,030 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) [2022-11-22 02:17:12,030 INFO L276 IsEmpty]: Start isEmpty. Operand 12522 states and 17979 transitions. [2022-11-22 02:17:12,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-22 02:17:12,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:12,039 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] [2022-11-22 02:17:12,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:17:12,039 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)] === [2022-11-22 02:17:12,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:12,040 INFO L85 PathProgramCache]: Analyzing trace with hash -474583644, now seen corresponding path program 1 times [2022-11-22 02:17:12,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:12,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550487211] [2022-11-22 02:17:12,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:12,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-11-22 02:17:13,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:13,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550487211] [2022-11-22 02:17:13,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550487211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:17:13,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:17:13,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:17:13,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369668821] [2022-11-22 02:17:13,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:17:13,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:17:13,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:17:13,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:17:13,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:17:13,391 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) [2022-11-22 02:17:19,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:17:19,226 INFO L93 Difference]: Finished difference Result 12528 states and 17984 transitions. [2022-11-22 02:17:19,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:17:19,226 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 [2022-11-22 02:17:19,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:17:19,306 INFO L225 Difference]: With dead ends: 12528 [2022-11-22 02:17:19,307 INFO L226 Difference]: Without dead ends: 12526 [2022-11-22 02:17:19,318 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 [2022-11-22 02:17:19,319 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, 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, 5.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:17:19,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2580 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-22 02:17:19,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12526 states. [2022-11-22 02:17:20,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12526 to 12526. [2022-11-22 02:17:20,549 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) [2022-11-22 02:17:20,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12526 states to 12526 states and 17982 transitions. [2022-11-22 02:17:20,623 INFO L78 Accepts]: Start accepts. Automaton has 12526 states and 17982 transitions. Word has length 148 [2022-11-22 02:17:20,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:17:20,624 INFO L495 AbstractCegarLoop]: Abstraction has 12526 states and 17982 transitions. [2022-11-22 02:17:20,624 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) [2022-11-22 02:17:20,624 INFO L276 IsEmpty]: Start isEmpty. Operand 12526 states and 17982 transitions. [2022-11-22 02:17:20,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-22 02:17:20,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:20,635 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] [2022-11-22 02:17:20,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:17:20,635 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)] === [2022-11-22 02:17:20,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:20,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1446497990, now seen corresponding path program 1 times [2022-11-22 02:17:20,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:20,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132103978] [2022-11-22 02:17:20,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:20,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:21,909 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-22 02:17:21,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:21,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132103978] [2022-11-22 02:17:21,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132103978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:17:21,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:17:21,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:17:21,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111743211] [2022-11-22 02:17:21,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:17:21,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:17:21,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:17:21,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:17:21,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:17:21,911 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) [2022-11-22 02:17:25,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:17:27,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:17:27,927 INFO L93 Difference]: Finished difference Result 12532 states and 17987 transitions. [2022-11-22 02:17:27,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:17:27,928 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 [2022-11-22 02:17:27,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:17:27,989 INFO L225 Difference]: With dead ends: 12532 [2022-11-22 02:17:27,989 INFO L226 Difference]: Without dead ends: 12530 [2022-11-22 02:17:28,001 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 [2022-11-22 02:17:28,002 INFO L413 NwaCegarLoop]: 2282 mSDtfsCounter, 2573 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s 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, 5.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:17:28,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2578 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-22 02:17:28,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12530 states. [2022-11-22 02:17:28,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12530 to 12530. [2022-11-22 02:17:28,921 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) [2022-11-22 02:17:28,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12530 states to 12530 states and 17985 transitions. [2022-11-22 02:17:28,971 INFO L78 Accepts]: Start accepts. Automaton has 12530 states and 17985 transitions. Word has length 157 [2022-11-22 02:17:28,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:17:28,971 INFO L495 AbstractCegarLoop]: Abstraction has 12530 states and 17985 transitions. [2022-11-22 02:17:28,971 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) [2022-11-22 02:17:28,972 INFO L276 IsEmpty]: Start isEmpty. Operand 12530 states and 17985 transitions. [2022-11-22 02:17:28,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-22 02:17:28,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:28,982 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] [2022-11-22 02:17:28,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:17:28,983 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)] === [2022-11-22 02:17:28,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:28,984 INFO L85 PathProgramCache]: Analyzing trace with hash -182478490, now seen corresponding path program 1 times [2022-11-22 02:17:28,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:28,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080159430] [2022-11-22 02:17:28,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:28,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:29,963 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-11-22 02:17:29,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:29,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080159430] [2022-11-22 02:17:29,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080159430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:17:29,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:17:29,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:17:29,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933316208] [2022-11-22 02:17:29,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:17:29,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:17:29,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:17:29,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:17:29,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:17:29,966 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) [2022-11-22 02:17:35,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:17:35,713 INFO L93 Difference]: Finished difference Result 12536 states and 17990 transitions. [2022-11-22 02:17:35,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:17:35,714 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 [2022-11-22 02:17:35,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:17:35,763 INFO L225 Difference]: With dead ends: 12536 [2022-11-22 02:17:35,763 INFO L226 Difference]: Without dead ends: 12534 [2022-11-22 02:17:35,773 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 [2022-11-22 02:17:35,773 INFO L413 NwaCegarLoop]: 2282 mSDtfsCounter, 2573 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s 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, 4.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:17:35,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2577 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-22 02:17:35,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12534 states. [2022-11-22 02:17:36,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12534 to 12534. [2022-11-22 02:17:36,721 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) [2022-11-22 02:17:36,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12534 states to 12534 states and 17988 transitions. [2022-11-22 02:17:36,768 INFO L78 Accepts]: Start accepts. Automaton has 12534 states and 17988 transitions. Word has length 161 [2022-11-22 02:17:36,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:17:36,770 INFO L495 AbstractCegarLoop]: Abstraction has 12534 states and 17988 transitions. [2022-11-22 02:17:36,770 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) [2022-11-22 02:17:36,770 INFO L276 IsEmpty]: Start isEmpty. Operand 12534 states and 17988 transitions. [2022-11-22 02:17:36,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-22 02:17:36,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:36,782 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] [2022-11-22 02:17:36,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 02:17:36,783 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)] === [2022-11-22 02:17:36,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:36,784 INFO L85 PathProgramCache]: Analyzing trace with hash 563909978, now seen corresponding path program 1 times [2022-11-22 02:17:36,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:36,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614993487] [2022-11-22 02:17:36,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:36,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-22 02:17:37,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:37,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614993487] [2022-11-22 02:17:37,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614993487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:17:37,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:17:37,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:17:37,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424120798] [2022-11-22 02:17:37,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:17:37,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:17:37,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:17:37,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:17:37,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:17:37,864 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) [2022-11-22 02:17:45,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:17:45,837 INFO L93 Difference]: Finished difference Result 12540 states and 17993 transitions. [2022-11-22 02:17:45,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:17:45,838 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 [2022-11-22 02:17:45,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:17:45,887 INFO L225 Difference]: With dead ends: 12540 [2022-11-22 02:17:45,887 INFO L226 Difference]: Without dead ends: 12538 [2022-11-22 02:17:45,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:17:45,892 INFO L413 NwaCegarLoop]: 2282 mSDtfsCounter, 2573 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s 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, 6.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:17:45,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2576 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-22 02:17:45,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12538 states. [2022-11-22 02:17:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12538 to 12538. [2022-11-22 02:17:46,830 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) [2022-11-22 02:17:46,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12538 states to 12538 states and 17991 transitions. [2022-11-22 02:17:46,930 INFO L78 Accepts]: Start accepts. Automaton has 12538 states and 17991 transitions. Word has length 167 [2022-11-22 02:17:46,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:17:46,931 INFO L495 AbstractCegarLoop]: Abstraction has 12538 states and 17991 transitions. [2022-11-22 02:17:46,932 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) [2022-11-22 02:17:46,932 INFO L276 IsEmpty]: Start isEmpty. Operand 12538 states and 17991 transitions. [2022-11-22 02:17:46,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-22 02:17:46,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:46,944 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] [2022-11-22 02:17:46,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 02:17:46,945 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)] === [2022-11-22 02:17:46,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:46,945 INFO L85 PathProgramCache]: Analyzing trace with hash 165033188, now seen corresponding path program 1 times [2022-11-22 02:17:46,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:46,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830945830] [2022-11-22 02:17:46,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:46,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-11-22 02:17:48,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:48,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830945830] [2022-11-22 02:17:48,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830945830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:17:48,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:17:48,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:17:48,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804271539] [2022-11-22 02:17:48,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:17:48,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:17:48,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:17:48,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:17:48,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:17:48,078 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) [2022-11-22 02:17:53,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:17:55,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:17:55,653 INFO L93 Difference]: Finished difference Result 12544 states and 17996 transitions. [2022-11-22 02:17:55,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:17:55,654 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 [2022-11-22 02:17:55,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:17:55,703 INFO L225 Difference]: With dead ends: 12544 [2022-11-22 02:17:55,703 INFO L226 Difference]: Without dead ends: 12542 [2022-11-22 02:17:55,712 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 [2022-11-22 02:17:55,713 INFO L413 NwaCegarLoop]: 2282 mSDtfsCounter, 2574 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s 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, 6.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:17:55,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2576 Valid, 6827 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-22 02:17:55,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12542 states. [2022-11-22 02:17:56,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12542 to 12542. [2022-11-22 02:17:56,717 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) [2022-11-22 02:17:56,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12542 states to 12542 states and 17994 transitions. [2022-11-22 02:17:56,772 INFO L78 Accepts]: Start accepts. Automaton has 12542 states and 17994 transitions. Word has length 168 [2022-11-22 02:17:56,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:17:56,773 INFO L495 AbstractCegarLoop]: Abstraction has 12542 states and 17994 transitions. [2022-11-22 02:17:56,773 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) [2022-11-22 02:17:56,773 INFO L276 IsEmpty]: Start isEmpty. Operand 12542 states and 17994 transitions. [2022-11-22 02:17:56,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-22 02:17:56,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:56,786 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] [2022-11-22 02:17:56,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 02:17:56,786 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)] === [2022-11-22 02:17:56,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:56,787 INFO L85 PathProgramCache]: Analyzing trace with hash -179568262, now seen corresponding path program 1 times [2022-11-22 02:17:56,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:56,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88287752] [2022-11-22 02:17:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:56,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2022-11-22 02:17:57,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:57,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88287752] [2022-11-22 02:17:57,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88287752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:17:57,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:17:57,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:17:57,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087647236] [2022-11-22 02:17:57,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:17:57,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:17:57,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:17:57,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:17:57,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:17:57,784 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) [2022-11-22 02:18:02,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:18:05,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:05,705 INFO L93 Difference]: Finished difference Result 13394 states and 18939 transitions. [2022-11-22 02:18:05,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:18:05,706 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 [2022-11-22 02:18:05,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:05,752 INFO L225 Difference]: With dead ends: 13394 [2022-11-22 02:18:05,752 INFO L226 Difference]: Without dead ends: 13390 [2022-11-22 02:18:05,761 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 [2022-11-22 02:18:05,762 INFO L413 NwaCegarLoop]: 2326 mSDtfsCounter, 2107 mSDsluCounter, 5194 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s 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, 6.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:05,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 7520 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-22 02:18:05,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13390 states. [2022-11-22 02:18:06,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13390 to 13390. [2022-11-22 02:18:06,880 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) [2022-11-22 02:18:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13390 states to 13390 states and 18935 transitions. [2022-11-22 02:18:06,948 INFO L78 Accepts]: Start accepts. Automaton has 13390 states and 18935 transitions. Word has length 177 [2022-11-22 02:18:06,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:06,950 INFO L495 AbstractCegarLoop]: Abstraction has 13390 states and 18935 transitions. [2022-11-22 02:18:06,950 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) [2022-11-22 02:18:06,950 INFO L276 IsEmpty]: Start isEmpty. Operand 13390 states and 18935 transitions. [2022-11-22 02:18:06,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-22 02:18:06,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:06,963 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] [2022-11-22 02:18:06,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 02:18:06,963 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)] === [2022-11-22 02:18:06,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:06,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1886210982, now seen corresponding path program 1 times [2022-11-22 02:18:06,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:06,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509856179] [2022-11-22 02:18:06,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:06,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2022-11-22 02:18:08,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:08,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509856179] [2022-11-22 02:18:08,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509856179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:08,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:08,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:18:08,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294941639] [2022-11-22 02:18:08,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:08,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:18:08,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:08,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:18:08,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:18:08,017 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) [2022-11-22 02:18:14,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:14,087 INFO L93 Difference]: Finished difference Result 13390 states and 18935 transitions. [2022-11-22 02:18:14,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:18:14,088 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 [2022-11-22 02:18:14,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:14,140 INFO L225 Difference]: With dead ends: 13390 [2022-11-22 02:18:14,140 INFO L226 Difference]: Without dead ends: 13291 [2022-11-22 02:18:14,148 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 [2022-11-22 02:18:14,149 INFO L413 NwaCegarLoop]: 2280 mSDtfsCounter, 2569 mSDsluCounter, 4544 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s 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, 4.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:14,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2569 Valid, 6824 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-22 02:18:14,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13291 states. [2022-11-22 02:18:16,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13291 to 13291. [2022-11-22 02:18:16,031 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) [2022-11-22 02:18:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13291 states to 13291 states and 18805 transitions. [2022-11-22 02:18:16,090 INFO L78 Accepts]: Start accepts. Automaton has 13291 states and 18805 transitions. Word has length 181 [2022-11-22 02:18:16,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:16,091 INFO L495 AbstractCegarLoop]: Abstraction has 13291 states and 18805 transitions. [2022-11-22 02:18:16,092 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) [2022-11-22 02:18:16,092 INFO L276 IsEmpty]: Start isEmpty. Operand 13291 states and 18805 transitions. [2022-11-22 02:18:16,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-22 02:18:16,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:16,104 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] [2022-11-22 02:18:16,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 02:18:16,104 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)] === [2022-11-22 02:18:16,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:16,105 INFO L85 PathProgramCache]: Analyzing trace with hash 988497171, now seen corresponding path program 1 times [2022-11-22 02:18:16,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:16,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111456635] [2022-11-22 02:18:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:16,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:16,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:16,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111456635] [2022-11-22 02:18:16,600 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-22 02:18:16,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701867062] [2022-11-22 02:18:16,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:16,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:18:16,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:18:16,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:18:16,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:18:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:19,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 8919 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:18:19,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-22 02:18:19,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:18:19,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701867062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:19,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:19,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:18:19,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553452808] [2022-11-22 02:18:19,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:19,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:18:19,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:19,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:18:19,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:18:19,450 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) [2022-11-22 02:18:22,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:18:27,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:27,836 INFO L93 Difference]: Finished difference Result 23543 states and 33183 transitions. [2022-11-22 02:18:27,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:18:27,837 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 [2022-11-22 02:18:27,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:27,872 INFO L225 Difference]: With dead ends: 23543 [2022-11-22 02:18:27,873 INFO L226 Difference]: Without dead ends: 10265 [2022-11-22 02:18:27,948 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 [2022-11-22 02:18:27,949 INFO L413 NwaCegarLoop]: 3905 mSDtfsCounter, 2015 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s 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, 7.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:27,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2015 Valid, 6109 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-22 02:18:27,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10265 states. [2022-11-22 02:18:28,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10265 to 10257. [2022-11-22 02:18:28,866 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) [2022-11-22 02:18:28,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10257 states to 10257 states and 14316 transitions. [2022-11-22 02:18:28,905 INFO L78 Accepts]: Start accepts. Automaton has 10257 states and 14316 transitions. Word has length 232 [2022-11-22 02:18:28,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:28,905 INFO L495 AbstractCegarLoop]: Abstraction has 10257 states and 14316 transitions. [2022-11-22 02:18:28,906 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) [2022-11-22 02:18:28,906 INFO L276 IsEmpty]: Start isEmpty. Operand 10257 states and 14316 transitions. [2022-11-22 02:18:28,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-22 02:18:28,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:28,914 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] [2022-11-22 02:18:28,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 02:18:29,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-22 02:18:29,115 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)] === [2022-11-22 02:18:29,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:29,115 INFO L85 PathProgramCache]: Analyzing trace with hash 991731167, now seen corresponding path program 1 times [2022-11-22 02:18:29,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:29,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658126488] [2022-11-22 02:18:29,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:29,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:29,396 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:18:29,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106854083] [2022-11-22 02:18:29,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:29,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:18:29,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:18:29,398 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:18:29,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:18:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:31,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 9191 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:18:31,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:31,939 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-22 02:18:31,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:18:31,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:31,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658126488] [2022-11-22 02:18:31,940 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:18:31,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106854083] [2022-11-22 02:18:31,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106854083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:31,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:31,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:18:31,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872728431] [2022-11-22 02:18:31,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:31,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:18:31,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:31,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:18:31,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:18:31,942 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) [2022-11-22 02:18:35,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:18:38,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:38,831 INFO L93 Difference]: Finished difference Result 23920 states and 33342 transitions. [2022-11-22 02:18:38,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:18:38,832 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 [2022-11-22 02:18:38,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:38,881 INFO L225 Difference]: With dead ends: 23920 [2022-11-22 02:18:38,881 INFO L226 Difference]: Without dead ends: 13746 [2022-11-22 02:18:38,918 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 [2022-11-22 02:18:38,919 INFO L413 NwaCegarLoop]: 3898 mSDtfsCounter, 2019 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s 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, 5.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:38,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 6094 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-22 02:18:38,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13746 states. [2022-11-22 02:18:40,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13746 to 13738. [2022-11-22 02:18:40,125 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) [2022-11-22 02:18:40,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13738 states to 13738 states and 19068 transitions. [2022-11-22 02:18:40,177 INFO L78 Accepts]: Start accepts. Automaton has 13738 states and 19068 transitions. Word has length 279 [2022-11-22 02:18:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:40,177 INFO L495 AbstractCegarLoop]: Abstraction has 13738 states and 19068 transitions. [2022-11-22 02:18:40,177 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) [2022-11-22 02:18:40,177 INFO L276 IsEmpty]: Start isEmpty. Operand 13738 states and 19068 transitions. [2022-11-22 02:18:40,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-11-22 02:18:40,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:40,183 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] [2022-11-22 02:18:40,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:18:40,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-22 02:18:40,384 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)] === [2022-11-22 02:18:40,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:40,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1935138664, now seen corresponding path program 1 times [2022-11-22 02:18:40,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:40,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20916864] [2022-11-22 02:18:40,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:40,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:40,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:40,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20916864] [2022-11-22 02:18:40,866 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-22 02:18:40,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099188097] [2022-11-22 02:18:40,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:40,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:18:40,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:18:40,868 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:18:40,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:18:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:43,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 9398 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:18:43,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-22 02:18:43,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:18:43,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099188097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:43,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:43,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:18:43,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64204249] [2022-11-22 02:18:43,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:43,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:18:43,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:43,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:18:43,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:18:43,441 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) [2022-11-22 02:18:48,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:48,807 INFO L93 Difference]: Finished difference Result 28577 states and 40060 transitions. [2022-11-22 02:18:48,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:18:48,808 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 [2022-11-22 02:18:48,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:48,883 INFO L225 Difference]: With dead ends: 28577 [2022-11-22 02:18:48,883 INFO L226 Difference]: Without dead ends: 14922 [2022-11-22 02:18:48,936 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 [2022-11-22 02:18:48,937 INFO L413 NwaCegarLoop]: 2343 mSDtfsCounter, 125 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s 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, 4.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:48,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 4595 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-22 02:18:48,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14922 states. [2022-11-22 02:18:50,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14922 to 13893. [2022-11-22 02:18:50,414 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) [2022-11-22 02:18:50,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13893 states to 13893 states and 19326 transitions. [2022-11-22 02:18:50,471 INFO L78 Accepts]: Start accepts. Automaton has 13893 states and 19326 transitions. Word has length 339 [2022-11-22 02:18:50,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:50,471 INFO L495 AbstractCegarLoop]: Abstraction has 13893 states and 19326 transitions. [2022-11-22 02:18:50,472 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) [2022-11-22 02:18:50,472 INFO L276 IsEmpty]: Start isEmpty. Operand 13893 states and 19326 transitions. [2022-11-22 02:18:50,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-11-22 02:18:50,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:50,478 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] [2022-11-22 02:18:50,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:18:50,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-22 02:18:50,684 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)] === [2022-11-22 02:18:50,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:50,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1671608232, now seen corresponding path program 1 times [2022-11-22 02:18:50,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:50,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464477503] [2022-11-22 02:18:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:50,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:50,987 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:18:50,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206962586] [2022-11-22 02:18:50,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:50,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:18:50,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:18:50,990 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:18:51,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_166b32e4-a030-4442-aef9-1a292bdc9e53/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:18:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:53,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 9404 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:18:53,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:53,829 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-22 02:18:53,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:18:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-11-22 02:18:54,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:54,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464477503] [2022-11-22 02:18:54,141 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:18:54,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206962586] [2022-11-22 02:18:54,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206962586] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:18:54,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [409215036] [2022-11-22 02:18:54,200 INFO L159 IcfgInterpreter]: Started Sifa with 223 locations of interest [2022-11-22 02:18:54,200 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:18:54,205 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:18:54,212 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:18:54,213 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:24:37,738 WARN L233 SmtUtils]: Spent 8.19s 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) [2022-11-22 02:24:45,941 WARN L233 SmtUtils]: Spent 8.16s 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) [2022-11-22 02:24:55,244 WARN L233 SmtUtils]: Spent 9.17s 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) [2022-11-22 02:25:03,547 WARN L233 SmtUtils]: Spent 8.15s 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) [2022-11-22 02:25:11,675 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) [2022-11-22 02:25:20,765 WARN L233 SmtUtils]: Spent 9.04s 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) [2022-11-22 02:28:36,408 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) [2022-11-22 02:28:44,546 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) [2022-11-22 02:28:53,829 WARN L233 SmtUtils]: Spent 9.16s 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) [2022-11-22 02:29:02,043 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) [2022-11-22 02:29:10,620 WARN L233 SmtUtils]: Spent 8.55s 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) [2022-11-22 02:29:20,797 WARN L233 SmtUtils]: Spent 10.11s 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)