./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-ethernet-qlogic-qla3xxx.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_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/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_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/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-ethernet-qlogic-qla3xxx.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/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_ffc523b4-7763-4cb8-a944-f4e440b809f6/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 5663310b82fa3e5d48c5bcacd13ac8ac886029c41a2f8f3bd2b8442c496a9447 --- 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 02:43:14,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:43:14,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:43:14,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:43:14,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:43:14,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:43:14,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:43:14,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:43:14,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:43:14,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:43:14,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:43:14,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:43:14,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:43:14,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:43:14,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:43:14,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:43:14,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:43:14,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:43:14,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:43:14,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:43:14,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:43:14,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:43:14,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:43:14,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:43:14,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:43:14,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:43:14,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:43:14,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:43:14,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:43:14,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:43:14,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:43:14,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:43:14,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:43:14,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:43:14,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:43:14,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:43:14,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:43:14,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:43:14,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:43:14,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:43:14,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:43:14,278 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:43:14,323 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:43:14,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:43:14,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:43:14,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:43:14,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:43:14,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:43:14,325 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:43:14,325 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:43:14,326 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:43:14,326 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:43:14,327 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:43:14,327 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:43:14,327 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:43:14,327 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:43:14,328 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:43:14,328 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:43:14,328 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:43:14,328 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:43:14,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:43:14,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:43:14,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:43:14,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:43:14,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:43:14,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:43:14,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:43:14,330 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:43:14,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:43:14,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:43:14,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:43:14,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:43:14,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:43:14,332 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:43:14,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:43:14,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:43:14,333 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:43:14,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:43:14,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:43:14,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:43:14,333 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_ffc523b4-7763-4cb8-a944-f4e440b809f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5663310b82fa3e5d48c5bcacd13ac8ac886029c41a2f8f3bd2b8442c496a9447 [2022-11-22 02:43:14,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:43:14,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:43:14,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:43:14,708 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:43:14,708 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:43:14,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i [2022-11-22 02:43:17,778 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:43:18,473 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:43:18,474 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i [2022-11-22 02:43:18,538 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/data/dbae7c27d/0051ca7ef089497c9ca96ce95b3c8f62/FLAG05ce9d64b [2022-11-22 02:43:18,558 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/data/dbae7c27d/0051ca7ef089497c9ca96ce95b3c8f62 [2022-11-22 02:43:18,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:43:18,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:43:18,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:43:18,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:43:18,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:43:18,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:43:18" (1/1) ... [2022-11-22 02:43:18,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c76589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:43:18, skipping insertion in model container [2022-11-22 02:43:18,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:43:18" (1/1) ... [2022-11-22 02:43:18,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:43:18,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:43:22,624 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_ffc523b4-7763-4cb8-a944-f4e440b809f6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[408897,408910] [2022-11-22 02:43:22,631 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_ffc523b4-7763-4cb8-a944-f4e440b809f6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409066,409079] [2022-11-22 02:43:22,637 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_ffc523b4-7763-4cb8-a944-f4e440b809f6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409233,409246] [2022-11-22 02:43:22,644 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409401,409414] [2022-11-22 02:43:22,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:43:22,715 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:43:23,126 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_ffc523b4-7763-4cb8-a944-f4e440b809f6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[408897,408910] [2022-11-22 02:43:23,127 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_ffc523b4-7763-4cb8-a944-f4e440b809f6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409066,409079] [2022-11-22 02:43:23,127 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_ffc523b4-7763-4cb8-a944-f4e440b809f6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409233,409246] [2022-11-22 02:43:23,128 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_ffc523b4-7763-4cb8-a944-f4e440b809f6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i[409401,409414] [2022-11-22 02:43:23,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:43:23,314 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:43:23,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:43:23 WrapperNode [2022-11-22 02:43:23,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:43:23,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:43:23,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:43:23,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:43:23,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:43:23" (1/1) ... [2022-11-22 02:43:23,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:43:23" (1/1) ... [2022-11-22 02:43:23,634 INFO L138 Inliner]: procedures = 572, calls = 2987, calls flagged for inlining = 287, calls inlined = 255, statements flattened = 6576 [2022-11-22 02:43:23,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:43:23,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:43:23,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:43:23,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:43:23,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:43:23" (1/1) ... [2022-11-22 02:43:23,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:43:23" (1/1) ... [2022-11-22 02:43:23,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:43:23" (1/1) ... [2022-11-22 02:43:23,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:43:23" (1/1) ... [2022-11-22 02:43:23,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:43:23" (1/1) ... [2022-11-22 02:43:23,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:43:23" (1/1) ... [2022-11-22 02:43:23,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:43:23" (1/1) ... [2022-11-22 02:43:23,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:43:23" (1/1) ... [2022-11-22 02:43:23,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:43:23,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:43:23,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:43:23,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:43:23,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:43:23" (1/1) ... [2022-11-22 02:43:23,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:43:23,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:43:24,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:43:24,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:43:24,050 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_link_speed [2022-11-22 02:43:24,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_link_speed [2022-11-22 02:43:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_hw_lock_of_ql3_adapter [2022-11-22 02:43:24,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_hw_lock_of_ql3_adapter [2022-11-22 02:43:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 02:43:24,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 02:43:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 02:43:24,052 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 02:43:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-22 02:43:24,052 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-22 02:43:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2022-11-22 02:43:24,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2022-11-22 02:43:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_close [2022-11-22 02:43:24,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_close [2022-11-22 02:43:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 02:43:24,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 02:43:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-22 02:43:24,053 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-22 02:43:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2022-11-22 02:43:24,054 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2022-11-22 02:43:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:43:24,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:43:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure ql_this_adapter_controls_port [2022-11-22 02:43:24,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_this_adapter_controls_port [2022-11-22 02:43:24,056 INFO L130 BoogieDeclarations]: Found specification of procedure ql_enable_interrupts [2022-11-22 02:43:24,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_enable_interrupts [2022-11-22 02:43:24,056 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 02:43:24,056 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 02:43:24,056 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 02:43:24,057 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 02:43:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-11-22 02:43:24,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-11-22 02:43:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_common_reg_l [2022-11-22 02:43:24,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_common_reg_l [2022-11-22 02:43:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_send_free_list [2022-11-22 02:43:24,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_send_free_list [2022-11-22 02:43:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 02:43:24,058 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 02:43:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 02:43:24,058 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 02:43:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure ssleep [2022-11-22 02:43:24,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ssleep [2022-11-22 02:43:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cycle_adapter [2022-11-22 02:43:24,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cycle_adapter [2022-11-22 02:43:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 02:43:24,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 02:43:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mac_cfg_soft_reset [2022-11-22 02:43:24,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mac_cfg_soft_reset [2022-11-22 02:43:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 02:43:24,061 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 02:43:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-22 02:43:24,062 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-22 02:43:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_disable_scan_mode [2022-11-22 02:43:24,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_disable_scan_mode [2022-11-22 02:43:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 02:43:24,062 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 02:43:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 02:43:24,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 02:43:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 02:43:24,063 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 02:43:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:43:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-22 02:43:24,064 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-22 02:43:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_page0_reg_l [2022-11-22 02:43:24,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_page0_reg_l [2022-11-22 02:43:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_up [2022-11-22 02:43:24,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_up [2022-11-22 02:43:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 02:43:24,065 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 02:43:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-11-22 02:43:24,066 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-11-22 02:43:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 02:43:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 02:43:24,066 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 02:43:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 02:43:24,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 02:43:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 02:43:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 02:43:24,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 02:43:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page1_reg [2022-11-22 02:43:24,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page1_reg [2022-11-22 02:43:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:43:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 02:43:24,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 02:43:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 02:43:24,069 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 02:43:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 02:43:24,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 02:43:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 02:43:24,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 02:43:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 02:43:24,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 02:43:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2022-11-22 02:43:24,071 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2022-11-22 02:43:24,071 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-22 02:43:24,071 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-22 02:43:24,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_hw_lock_of_ql3_adapter [2022-11-22 02:43:24,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_hw_lock_of_ql3_adapter [2022-11-22 02:43:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_register_page [2022-11-22 02:43:24,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_register_page [2022-11-22 02:43:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 02:43:24,072 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 02:43:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_read_reg_ex [2022-11-22 02:43:24,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_read_reg_ex [2022-11-22 02:43:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure ql_phy_init_ex [2022-11-22 02:43:24,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_phy_init_ex [2022-11-22 02:43:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:43:24,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:43:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_common_reg_l [2022-11-22 02:43:24,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_common_reg_l [2022-11-22 02:43:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:43:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_common_reg [2022-11-22 02:43:24,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_common_reg [2022-11-22 02:43:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 02:43:24,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 02:43:24,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 02:43:24,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 02:43:24,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-22 02:43:24,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-22 02:43:24,084 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_spinlock [2022-11-22 02:43:24,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_spinlock [2022-11-22 02:43:24,085 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page2_reg [2022-11-22 02:43:24,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page2_reg [2022-11-22 02:43:24,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:43:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_common_reg [2022-11-22 02:43:24,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_common_reg [2022-11-22 02:43:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 02:43:24,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 02:43:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 02:43:24,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 02:43:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:43:24,087 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_read_reg [2022-11-22 02:43:24,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_read_reg [2022-11-22 02:43:24,087 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:43:24,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:43:24,087 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_unlock [2022-11-22 02:43:24,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_unlock [2022-11-22 02:43:24,087 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:43:24,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:43:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 02:43:24,088 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 02:43:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_nvram_reg [2022-11-22 02:43:24,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_nvram_reg [2022-11-22 02:43:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 02:43:24,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 02:43:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-22 02:43:24,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-22 02:43:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-22 02:43:24,090 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-22 02:43:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 02:43:24,090 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 02:43:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_for_drvr_lock [2022-11-22 02:43:24,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_for_drvr_lock [2022-11-22 02:43:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 02:43:24,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 02:43:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-22 02:43:24,091 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-22 02:43:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_enable_scan_mode [2022-11-22 02:43:24,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_enable_scan_mode [2022-11-22 02:43:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2022-11-22 02:43:24,092 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2022-11-22 02:43:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-22 02:43:24,092 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-22 02:43:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 02:43:24,092 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 02:43:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:43:24,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:43:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_for_mii_ready [2022-11-22 02:43:24,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_for_mii_ready [2022-11-22 02:43:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-22 02:43:24,093 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-22 02:43:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_large_buffers [2022-11-22 02:43:24,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_large_buffers [2022-11-22 02:43:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 02:43:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 02:43:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 02:43:24,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 02:43:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-22 02:43:24,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-22 02:43:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:43:24,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:43:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-22 02:43:24,097 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-22 02:43:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_interrupts [2022-11-22 02:43:24,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_interrupts [2022-11-22 02:43:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-22 02:43:24,097 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-22 02:43:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-22 02:43:24,097 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-22 02:43:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 02:43:24,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 02:43:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_page0_reg [2022-11-22 02:43:24,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_page0_reg [2022-11-22 02:43:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 02:43:24,098 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 02:43:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure PHY_Setup [2022-11-22 02:43:24,098 INFO L138 BoogieDeclarations]: Found implementation of procedure PHY_Setup [2022-11-22 02:43:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 02:43:24,099 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 02:43:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_buffer_queues [2022-11-22 02:43:24,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_buffer_queues [2022-11-22 02:43:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 02:43:24,099 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 02:43:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-22 02:43:24,100 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-22 02:43:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-22 02:43:24,100 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-22 02:43:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_remove [2022-11-22 02:43:24,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_remove [2022-11-22 02:43:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 02:43:24,100 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 02:43:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-22 02:43:24,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-22 02:43:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:43:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 02:43:24,101 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 02:43:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:43:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:43:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 02:43:24,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 02:43:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-22 02:43:24,102 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-22 02:43:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 02:43:24,102 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 02:43:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 02:43:24,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 02:43:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-22 02:43:24,103 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-22 02:43:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page0_reg [2022-11-22 02:43:24,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page0_reg [2022-11-22 02:43:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-22 02:43:24,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-22 02:43:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-22 02:43:24,108 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-22 02:43:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure ql_is_link_full_dup [2022-11-22 02:43:24,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_is_link_full_dup [2022-11-22 02:43:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_open [2022-11-22 02:43:24,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_open [2022-11-22 02:43:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 02:43:24,109 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 02:43:24,109 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_tx_timeout [2022-11-22 02:43:24,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_tx_timeout [2022-11-22 02:43:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure ql_supported_modes [2022-11-22 02:43:24,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_supported_modes [2022-11-22 02:43:24,111 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-22 02:43:24,111 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-22 02:43:24,111 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 02:43:24,111 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 02:43:24,111 INFO L130 BoogieDeclarations]: Found specification of procedure ql_is_fiber [2022-11-22 02:43:24,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_is_fiber [2022-11-22 02:43:24,111 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-22 02:43:24,112 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-22 02:43:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 02:43:24,112 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 02:43:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_net_req_rsp_queues [2022-11-22 02:43:24,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_net_req_rsp_queues [2022-11-22 02:43:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:43:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 02:43:24,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 02:43:24,113 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_write_reg_ex [2022-11-22 02:43:24,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_write_reg_ex [2022-11-22 02:43:24,113 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_down [2022-11-22 02:43:24,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_down [2022-11-22 02:43:24,113 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 02:43:24,113 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 02:43:24,113 INFO L130 BoogieDeclarations]: Found specification of procedure ql_port_start [2022-11-22 02:43:24,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_port_start [2022-11-22 02:43:24,114 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-22 02:43:24,114 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-22 02:43:24,114 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_auto_cfg_status [2022-11-22 02:43:24,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_auto_cfg_status [2022-11-22 02:43:24,114 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_write_reg [2022-11-22 02:43:24,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_write_reg [2022-11-22 02:43:24,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 02:43:24,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 02:43:24,115 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-22 02:43:24,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-22 02:43:24,115 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-22 02:43:24,115 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-22 02:43:24,115 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-22 02:43:24,115 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-22 02:43:24,115 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-22 02:43:24,116 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-22 02:43:24,116 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-22 02:43:24,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:43:24,116 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr [2022-11-22 02:43:24,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr [2022-11-22 02:43:24,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 02:43:24,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 02:43:25,270 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:43:25,279 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:43:25,601 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 02:43:30,464 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 02:43:30,663 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:43:32,470 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:43:32,470 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 02:43:32,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:43:32 BoogieIcfgContainer [2022-11-22 02:43:32,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:43:32,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:43:32,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:43:32,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:43:32,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:43:18" (1/3) ... [2022-11-22 02:43:32,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3bdb6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:43:32, skipping insertion in model container [2022-11-22 02:43:32,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:43:23" (2/3) ... [2022-11-22 02:43:32,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3bdb6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:43:32, skipping insertion in model container [2022-11-22 02:43:32,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:43:32" (3/3) ... [2022-11-22 02:43:32,488 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-qlogic-qla3xxx.cil.i [2022-11-22 02:43:32,507 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:43:32,507 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 02:43:32,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:43:32,596 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;@6a64e3a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:43:32,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 02:43:32,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 1940 states, 1088 states have (on average 1.255514705882353) internal successors, (1366), 1139 states have internal predecessors, (1366), 714 states have call successors, (714), 136 states have call predecessors, (714), 135 states have return successors, (709), 694 states have call predecessors, (709), 709 states have call successors, (709) [2022-11-22 02:43:32,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 02:43:32,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:32,620 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:43:32,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:43:32,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:32,626 INFO L85 PathProgramCache]: Analyzing trace with hash 641487453, now seen corresponding path program 1 times [2022-11-22 02:43:32,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:32,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933886158] [2022-11-22 02:43:32,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:32,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-22 02:43:33,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:33,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933886158] [2022-11-22 02:43:33,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933886158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:33,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:33,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:43:33,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109878377] [2022-11-22 02:43:33,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:33,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:43:33,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:33,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:43:33,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:43:33,374 INFO L87 Difference]: Start difference. First operand has 1940 states, 1088 states have (on average 1.255514705882353) internal successors, (1366), 1139 states have internal predecessors, (1366), 714 states have call successors, (714), 136 states have call predecessors, (714), 135 states have return successors, (709), 694 states have call predecessors, (709), 709 states have call successors, (709) Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-22 02:43:36,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:36,446 INFO L93 Difference]: Finished difference Result 5726 states and 8386 transitions. [2022-11-22 02:43:36,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:43:36,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-11-22 02:43:36,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:36,484 INFO L225 Difference]: With dead ends: 5726 [2022-11-22 02:43:36,484 INFO L226 Difference]: Without dead ends: 3793 [2022-11-22 02:43:36,500 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 02:43:36,503 INFO L413 NwaCegarLoop]: 3154 mSDtfsCounter, 2700 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2700 SdHoareTripleChecker+Valid, 5597 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:36,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2700 Valid, 5597 Invalid, 637 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-22 02:43:36,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2022-11-22 02:43:36,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3789. [2022-11-22 02:43:36,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3789 states, 2135 states have (on average 1.2515222482435597) internal successors, (2672), 2235 states have internal predecessors, (2672), 1384 states have call successors, (1384), 268 states have call predecessors, (1384), 267 states have return successors, (1381), 1351 states have call predecessors, (1381), 1381 states have call successors, (1381) [2022-11-22 02:43:36,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3789 states to 3789 states and 5437 transitions. [2022-11-22 02:43:36,792 INFO L78 Accepts]: Start accepts. Automaton has 3789 states and 5437 transitions. Word has length 97 [2022-11-22 02:43:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:36,793 INFO L495 AbstractCegarLoop]: Abstraction has 3789 states and 5437 transitions. [2022-11-22 02:43:36,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-22 02:43:36,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3789 states and 5437 transitions. [2022-11-22 02:43:36,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-22 02:43:36,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:36,799 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:43:36,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:43:36,799 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:43:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:36,800 INFO L85 PathProgramCache]: Analyzing trace with hash -260210707, now seen corresponding path program 1 times [2022-11-22 02:43:36,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:36,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896275202] [2022-11-22 02:43:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:36,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:37,805 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-22 02:43:37,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:37,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896275202] [2022-11-22 02:43:37,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896275202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:37,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:37,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:43:37,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154688096] [2022-11-22 02:43:37,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:37,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:43:37,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:37,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:43:37,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:43:37,814 INFO L87 Difference]: Start difference. First operand 3789 states and 5437 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 02:43:45,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:45,967 INFO L93 Difference]: Finished difference Result 8368 states and 11879 transitions. [2022-11-22 02:43:45,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:43:45,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2022-11-22 02:43:45,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:45,995 INFO L225 Difference]: With dead ends: 8368 [2022-11-22 02:43:45,995 INFO L226 Difference]: Without dead ends: 4596 [2022-11-22 02:43:46,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:43:46,014 INFO L413 NwaCegarLoop]: 3433 mSDtfsCounter, 4658 mSDsluCounter, 5520 mSDsCounter, 0 mSdLazyCounter, 3104 mSolverCounterSat, 1297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4766 SdHoareTripleChecker+Valid, 8953 SdHoareTripleChecker+Invalid, 4401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1297 IncrementalHoareTripleChecker+Valid, 3104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:46,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4766 Valid, 8953 Invalid, 4401 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1297 Valid, 3104 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-22 02:43:46,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4596 states. [2022-11-22 02:43:46,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4596 to 4542. [2022-11-22 02:43:46,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4542 states, 2578 states have (on average 1.2428238944918542) internal successors, (3204), 2678 states have internal predecessors, (3204), 1581 states have call successors, (1581), 381 states have call predecessors, (1581), 380 states have return successors, (1578), 1554 states have call predecessors, (1578), 1578 states have call successors, (1578) [2022-11-22 02:43:46,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4542 states to 4542 states and 6363 transitions. [2022-11-22 02:43:46,258 INFO L78 Accepts]: Start accepts. Automaton has 4542 states and 6363 transitions. Word has length 102 [2022-11-22 02:43:46,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:46,258 INFO L495 AbstractCegarLoop]: Abstraction has 4542 states and 6363 transitions. [2022-11-22 02:43:46,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 02:43:46,259 INFO L276 IsEmpty]: Start isEmpty. Operand 4542 states and 6363 transitions. [2022-11-22 02:43:46,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-22 02:43:46,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:46,266 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:43:46,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:43:46,266 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 02:43:46,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:46,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1501622619, now seen corresponding path program 1 times [2022-11-22 02:43:46,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:46,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122539709] [2022-11-22 02:43:46,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:46,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:46,577 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-22 02:43:46,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:46,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122539709] [2022-11-22 02:43:46,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122539709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:46,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:46,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:43:46,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339591141] [2022-11-22 02:43:46,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:46,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:43:46,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:46,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:43:46,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:43:46,586 INFO L87 Difference]: Start difference. First operand 4542 states and 6363 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 02:43:49,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:49,867 INFO L93 Difference]: Finished difference Result 12310 states and 17263 transitions. [2022-11-22 02:43:49,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:43:49,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2022-11-22 02:43:49,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:49,926 INFO L225 Difference]: With dead ends: 12310 [2022-11-22 02:43:49,926 INFO L226 Difference]: Without dead ends: 7785 [2022-11-22 02:43:49,951 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 02:43:49,955 INFO L413 NwaCegarLoop]: 3367 mSDtfsCounter, 2672 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2672 SdHoareTripleChecker+Valid, 5663 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:49,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2672 Valid, 5663 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-22 02:43:49,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7785 states. [2022-11-22 02:43:50,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7785 to 7756. [2022-11-22 02:43:50,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7756 states, 4408 states have (on average 1.243421052631579) internal successors, (5481), 4587 states have internal predecessors, (5481), 2689 states have call successors, (2689), 664 states have call predecessors, (2689), 656 states have return successors, (2705), 2625 states have call predecessors, (2705), 2686 states have call successors, (2705) [2022-11-22 02:43:50,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7756 states to 7756 states and 10875 transitions. [2022-11-22 02:43:50,556 INFO L78 Accepts]: Start accepts. Automaton has 7756 states and 10875 transitions. Word has length 105 [2022-11-22 02:43:50,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:50,558 INFO L495 AbstractCegarLoop]: Abstraction has 7756 states and 10875 transitions. [2022-11-22 02:43:50,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 02:43:50,559 INFO L276 IsEmpty]: Start isEmpty. Operand 7756 states and 10875 transitions. [2022-11-22 02:43:50,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-22 02:43:50,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:50,569 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:43:50,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:43:50,569 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:43:50,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:50,574 INFO L85 PathProgramCache]: Analyzing trace with hash -298117230, now seen corresponding path program 1 times [2022-11-22 02:43:50,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:50,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189516169] [2022-11-22 02:43:50,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:50,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-22 02:43:50,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:50,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189516169] [2022-11-22 02:43:50,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189516169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:50,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:50,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:43:50,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863106064] [2022-11-22 02:43:50,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:50,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:43:50,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:50,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:43:50,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:43:50,783 INFO L87 Difference]: Start difference. First operand 7756 states and 10875 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-22 02:43:53,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:53,902 INFO L93 Difference]: Finished difference Result 20270 states and 28479 transitions. [2022-11-22 02:43:53,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:43:53,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2022-11-22 02:43:53,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:54,000 INFO L225 Difference]: With dead ends: 20270 [2022-11-22 02:43:54,000 INFO L226 Difference]: Without dead ends: 12531 [2022-11-22 02:43:54,045 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 02:43:54,046 INFO L413 NwaCegarLoop]: 3073 mSDtfsCounter, 2399 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2399 SdHoareTripleChecker+Valid, 5480 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:54,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2399 Valid, 5480 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-22 02:43:54,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12531 states. [2022-11-22 02:43:54,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12531 to 12501. [2022-11-22 02:43:54,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12501 states, 7075 states have (on average 1.2364664310954063) internal successors, (8748), 7418 states have internal predecessors, (8748), 4385 states have call successors, (4385), 1055 states have call predecessors, (4385), 1038 states have return successors, (4422), 4253 states have call predecessors, (4422), 4382 states have call successors, (4422) [2022-11-22 02:43:54,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12501 states to 12501 states and 17555 transitions. [2022-11-22 02:43:54,951 INFO L78 Accepts]: Start accepts. Automaton has 12501 states and 17555 transitions. Word has length 117 [2022-11-22 02:43:54,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:54,952 INFO L495 AbstractCegarLoop]: Abstraction has 12501 states and 17555 transitions. [2022-11-22 02:43:54,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-22 02:43:54,952 INFO L276 IsEmpty]: Start isEmpty. Operand 12501 states and 17555 transitions. [2022-11-22 02:43:54,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-22 02:43:54,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:54,954 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 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] [2022-11-22 02:43:54,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:43:54,955 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 02:43:54,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:54,956 INFO L85 PathProgramCache]: Analyzing trace with hash 678363291, now seen corresponding path program 1 times [2022-11-22 02:43:54,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:54,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739022034] [2022-11-22 02:43:54,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:54,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:43:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-11-22 02:43:55,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:43:55,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739022034] [2022-11-22 02:43:55,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739022034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:43:55,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:43:55,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:43:55,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7752] [2022-11-22 02:43:55,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:43:55,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:43:55,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:55,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:43:55,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:43:55,424 INFO L87 Difference]: Start difference. First operand 12501 states and 17555 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 02:43:58,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:43:58,783 INFO L93 Difference]: Finished difference Result 12507 states and 17560 transitions. [2022-11-22 02:43:58,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:43:58,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 135 [2022-11-22 02:43:58,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:43:58,865 INFO L225 Difference]: With dead ends: 12507 [2022-11-22 02:43:58,866 INFO L226 Difference]: Without dead ends: 12505 [2022-11-22 02:43:58,875 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 02:43:58,876 INFO L413 NwaCegarLoop]: 2450 mSDtfsCounter, 2725 mSDsluCounter, 4886 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2737 SdHoareTripleChecker+Valid, 7336 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:43:58,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2737 Valid, 7336 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-22 02:43:58,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12505 states. [2022-11-22 02:43:59,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12505 to 12505. [2022-11-22 02:43:59,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12505 states, 7078 states have (on average 1.2363662051426956) internal successors, (8751), 7421 states have internal predecessors, (8751), 4385 states have call successors, (4385), 1056 states have call predecessors, (4385), 1039 states have return successors, (4422), 4253 states have call predecessors, (4422), 4382 states have call successors, (4422) [2022-11-22 02:43:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12505 states to 12505 states and 17558 transitions. [2022-11-22 02:43:59,787 INFO L78 Accepts]: Start accepts. Automaton has 12505 states and 17558 transitions. Word has length 135 [2022-11-22 02:43:59,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:43:59,788 INFO L495 AbstractCegarLoop]: Abstraction has 12505 states and 17558 transitions. [2022-11-22 02:43:59,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 02:43:59,789 INFO L276 IsEmpty]: Start isEmpty. Operand 12505 states and 17558 transitions. [2022-11-22 02:43:59,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-22 02:43:59,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:43:59,792 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 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 02:43:59,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:43:59,793 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 02:43:59,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:43:59,793 INFO L85 PathProgramCache]: Analyzing trace with hash -491414898, now seen corresponding path program 1 times [2022-11-22 02:43:59,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:43:59,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879678823] [2022-11-22 02:43:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:43:59,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:43:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:00,237 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-11-22 02:44:00,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:00,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879678823] [2022-11-22 02:44:00,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879678823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:00,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:00,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:44:00,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880585112] [2022-11-22 02:44:00,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:00,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:44:00,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:00,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:44:00,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:44:00,240 INFO L87 Difference]: Start difference. First operand 12505 states and 17558 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 02:44:04,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:04,058 INFO L93 Difference]: Finished difference Result 12947 states and 18023 transitions. [2022-11-22 02:44:04,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:04,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 140 [2022-11-22 02:44:04,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:04,122 INFO L225 Difference]: With dead ends: 12947 [2022-11-22 02:44:04,122 INFO L226 Difference]: Without dead ends: 12945 [2022-11-22 02:44:04,129 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 02:44:04,130 INFO L413 NwaCegarLoop]: 2486 mSDtfsCounter, 2689 mSDsluCounter, 5059 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2700 SdHoareTripleChecker+Valid, 7545 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:04,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2700 Valid, 7545 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-22 02:44:04,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12945 states. [2022-11-22 02:44:04,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12945 to 12941. [2022-11-22 02:44:04,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12941 states, 7293 states have (on average 1.2326888797477034) internal successors, (8990), 7648 states have internal predecessors, (8990), 4496 states have call successors, (4496), 1166 states have call predecessors, (4496), 1149 states have return successors, (4533), 4364 states have call predecessors, (4533), 4493 states have call successors, (4533) [2022-11-22 02:44:05,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12941 states to 12941 states and 18019 transitions. [2022-11-22 02:44:05,119 INFO L78 Accepts]: Start accepts. Automaton has 12941 states and 18019 transitions. Word has length 140 [2022-11-22 02:44:05,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:05,120 INFO L495 AbstractCegarLoop]: Abstraction has 12941 states and 18019 transitions. [2022-11-22 02:44:05,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 02:44:05,121 INFO L276 IsEmpty]: Start isEmpty. Operand 12941 states and 18019 transitions. [2022-11-22 02:44:05,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-22 02:44:05,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:05,124 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 6, 6, 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] [2022-11-22 02:44:05,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:44:05,124 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 02:44:05,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:05,125 INFO L85 PathProgramCache]: Analyzing trace with hash -205480488, now seen corresponding path program 1 times [2022-11-22 02:44:05,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:05,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085954314] [2022-11-22 02:44:05,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:05,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2022-11-22 02:44:05,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:05,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085954314] [2022-11-22 02:44:05,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085954314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:05,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:05,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:44:05,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58556979] [2022-11-22 02:44:05,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:05,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:44:05,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:05,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:44:05,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:44:05,664 INFO L87 Difference]: Start difference. First operand 12941 states and 18019 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:44:09,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:09,835 INFO L93 Difference]: Finished difference Result 12947 states and 18024 transitions. [2022-11-22 02:44:09,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:09,836 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 154 [2022-11-22 02:44:09,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:09,894 INFO L225 Difference]: With dead ends: 12947 [2022-11-22 02:44:09,894 INFO L226 Difference]: Without dead ends: 12945 [2022-11-22 02:44:09,899 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 02:44:09,901 INFO L413 NwaCegarLoop]: 2453 mSDtfsCounter, 2716 mSDsluCounter, 4886 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2726 SdHoareTripleChecker+Valid, 7339 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:09,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2726 Valid, 7339 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-22 02:44:09,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12945 states. [2022-11-22 02:44:10,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12945 to 12945. [2022-11-22 02:44:10,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12945 states, 7296 states have (on average 1.232593201754386) internal successors, (8993), 7651 states have internal predecessors, (8993), 4496 states have call successors, (4496), 1167 states have call predecessors, (4496), 1150 states have return successors, (4533), 4364 states have call predecessors, (4533), 4493 states have call successors, (4533) [2022-11-22 02:44:10,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12945 states to 12945 states and 18022 transitions. [2022-11-22 02:44:10,676 INFO L78 Accepts]: Start accepts. Automaton has 12945 states and 18022 transitions. Word has length 154 [2022-11-22 02:44:10,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:10,677 INFO L495 AbstractCegarLoop]: Abstraction has 12945 states and 18022 transitions. [2022-11-22 02:44:10,677 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, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:44:10,678 INFO L276 IsEmpty]: Start isEmpty. Operand 12945 states and 18022 transitions. [2022-11-22 02:44:10,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-22 02:44:10,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:10,680 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 6, 6, 4, 3, 3, 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] [2022-11-22 02:44:10,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:44:10,681 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 02:44:10,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:10,682 INFO L85 PathProgramCache]: Analyzing trace with hash -751834383, now seen corresponding path program 1 times [2022-11-22 02:44:10,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:10,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326761259] [2022-11-22 02:44:10,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:10,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2022-11-22 02:44:11,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:11,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326761259] [2022-11-22 02:44:11,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326761259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:11,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:11,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:44:11,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778078360] [2022-11-22 02:44:11,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:11,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:44:11,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:11,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:44:11,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:44:11,118 INFO L87 Difference]: Start difference. First operand 12945 states and 18022 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:44:14,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:14,817 INFO L93 Difference]: Finished difference Result 12951 states and 18027 transitions. [2022-11-22 02:44:14,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:14,818 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 159 [2022-11-22 02:44:14,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:14,879 INFO L225 Difference]: With dead ends: 12951 [2022-11-22 02:44:14,879 INFO L226 Difference]: Without dead ends: 12949 [2022-11-22 02:44:14,890 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 02:44:14,890 INFO L413 NwaCegarLoop]: 2453 mSDtfsCounter, 2716 mSDsluCounter, 4886 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2725 SdHoareTripleChecker+Valid, 7339 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:14,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2725 Valid, 7339 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-22 02:44:14,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12949 states. [2022-11-22 02:44:15,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12949 to 12949. [2022-11-22 02:44:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12949 states, 7299 states have (on average 1.2324976024112893) internal successors, (8996), 7654 states have internal predecessors, (8996), 4496 states have call successors, (4496), 1168 states have call predecessors, (4496), 1151 states have return successors, (4533), 4364 states have call predecessors, (4533), 4493 states have call successors, (4533) [2022-11-22 02:44:15,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12949 states to 12949 states and 18025 transitions. [2022-11-22 02:44:15,892 INFO L78 Accepts]: Start accepts. Automaton has 12949 states and 18025 transitions. Word has length 159 [2022-11-22 02:44:15,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:15,893 INFO L495 AbstractCegarLoop]: Abstraction has 12949 states and 18025 transitions. [2022-11-22 02:44:15,893 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, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:44:15,893 INFO L276 IsEmpty]: Start isEmpty. Operand 12949 states and 18025 transitions. [2022-11-22 02:44:15,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-22 02:44:15,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:15,896 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 5, 4, 4, 4, 4, 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 02:44:15,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:44:15,896 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 02:44:15,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:15,897 INFO L85 PathProgramCache]: Analyzing trace with hash 218912731, now seen corresponding path program 1 times [2022-11-22 02:44:15,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:15,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422672696] [2022-11-22 02:44:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:15,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-11-22 02:44:16,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:16,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422672696] [2022-11-22 02:44:16,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422672696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:16,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:16,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:44:16,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831023573] [2022-11-22 02:44:16,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:16,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:44:16,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:16,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:44:16,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:44:16,275 INFO L87 Difference]: Start difference. First operand 12949 states and 18025 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:44:19,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:44:21,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:21,410 INFO L93 Difference]: Finished difference Result 13256 states and 18277 transitions. [2022-11-22 02:44:21,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:21,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 155 [2022-11-22 02:44:21,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:21,470 INFO L225 Difference]: With dead ends: 13256 [2022-11-22 02:44:21,470 INFO L226 Difference]: Without dead ends: 13254 [2022-11-22 02:44:21,479 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 02:44:21,481 INFO L413 NwaCegarLoop]: 2474 mSDtfsCounter, 1612 mSDsluCounter, 5981 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 8455 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:21,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 8455 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-22 02:44:21,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13254 states. [2022-11-22 02:44:22,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13254 to 13252. [2022-11-22 02:44:22,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13252 states, 7462 states have (on average 1.2292950951487538) internal successors, (9173), 7825 states have internal predecessors, (9173), 4532 states have call successors, (4532), 1272 states have call predecessors, (4532), 1255 states have return successors, (4569), 4400 states have call predecessors, (4569), 4529 states have call successors, (4569) [2022-11-22 02:44:22,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13252 states to 13252 states and 18274 transitions. [2022-11-22 02:44:22,430 INFO L78 Accepts]: Start accepts. Automaton has 13252 states and 18274 transitions. Word has length 155 [2022-11-22 02:44:22,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:22,431 INFO L495 AbstractCegarLoop]: Abstraction has 13252 states and 18274 transitions. [2022-11-22 02:44:22,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:44:22,432 INFO L276 IsEmpty]: Start isEmpty. Operand 13252 states and 18274 transitions. [2022-11-22 02:44:22,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-22 02:44:22,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:22,435 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 6, 5, 5, 4, 4, 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 02:44:22,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:44:22,435 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 02:44:22,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:22,436 INFO L85 PathProgramCache]: Analyzing trace with hash 998320718, now seen corresponding path program 1 times [2022-11-22 02:44:22,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:22,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309981635] [2022-11-22 02:44:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:22,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-11-22 02:44:22,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:22,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309981635] [2022-11-22 02:44:22,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309981635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:22,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:22,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:44:22,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640944387] [2022-11-22 02:44:22,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:22,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:44:22,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:22,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:44:22,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:44:22,823 INFO L87 Difference]: Start difference. First operand 13252 states and 18274 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:44:26,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:26,890 INFO L93 Difference]: Finished difference Result 13258 states and 18279 transitions. [2022-11-22 02:44:26,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:26,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 160 [2022-11-22 02:44:26,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:26,924 INFO L225 Difference]: With dead ends: 13258 [2022-11-22 02:44:26,924 INFO L226 Difference]: Without dead ends: 13256 [2022-11-22 02:44:26,929 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 02:44:26,929 INFO L413 NwaCegarLoop]: 2453 mSDtfsCounter, 2720 mSDsluCounter, 4886 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2727 SdHoareTripleChecker+Valid, 7339 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:26,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2727 Valid, 7339 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-22 02:44:26,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13256 states. [2022-11-22 02:44:27,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13256 to 13256. [2022-11-22 02:44:27,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13256 states, 7465 states have (on average 1.2292029470864032) internal successors, (9176), 7828 states have internal predecessors, (9176), 4532 states have call successors, (4532), 1273 states have call predecessors, (4532), 1256 states have return successors, (4569), 4400 states have call predecessors, (4569), 4529 states have call successors, (4569) [2022-11-22 02:44:27,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13256 states to 13256 states and 18277 transitions. [2022-11-22 02:44:27,785 INFO L78 Accepts]: Start accepts. Automaton has 13256 states and 18277 transitions. Word has length 160 [2022-11-22 02:44:27,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:27,785 INFO L495 AbstractCegarLoop]: Abstraction has 13256 states and 18277 transitions. [2022-11-22 02:44:27,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:44:27,786 INFO L276 IsEmpty]: Start isEmpty. Operand 13256 states and 18277 transitions. [2022-11-22 02:44:27,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-22 02:44:27,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:27,790 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 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 02:44:27,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:44:27,790 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 02:44:27,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:27,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1150856040, now seen corresponding path program 1 times [2022-11-22 02:44:27,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:27,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278607552] [2022-11-22 02:44:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:27,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:28,252 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-11-22 02:44:28,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:28,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278607552] [2022-11-22 02:44:28,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278607552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:28,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:28,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:44:28,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763459386] [2022-11-22 02:44:28,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:28,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:44:28,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:28,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:44:28,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:44:28,255 INFO L87 Difference]: Start difference. First operand 13256 states and 18277 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, (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 02:44:32,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:32,622 INFO L93 Difference]: Finished difference Result 13262 states and 18282 transitions. [2022-11-22 02:44:32,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:32,623 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, (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 174 [2022-11-22 02:44:32,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:32,675 INFO L225 Difference]: With dead ends: 13262 [2022-11-22 02:44:32,675 INFO L226 Difference]: Without dead ends: 13260 [2022-11-22 02:44:32,683 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 02:44:32,684 INFO L413 NwaCegarLoop]: 2453 mSDtfsCounter, 2716 mSDsluCounter, 4886 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 7339 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:32,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2722 Valid, 7339 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-22 02:44:32,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13260 states. [2022-11-22 02:44:33,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13260 to 13260. [2022-11-22 02:44:33,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13260 states, 7468 states have (on average 1.2291108730583824) internal successors, (9179), 7831 states have internal predecessors, (9179), 4532 states have call successors, (4532), 1274 states have call predecessors, (4532), 1257 states have return successors, (4569), 4400 states have call predecessors, (4569), 4529 states have call successors, (4569) [2022-11-22 02:44:33,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13260 states to 13260 states and 18280 transitions. [2022-11-22 02:44:33,806 INFO L78 Accepts]: Start accepts. Automaton has 13260 states and 18280 transitions. Word has length 174 [2022-11-22 02:44:33,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:33,807 INFO L495 AbstractCegarLoop]: Abstraction has 13260 states and 18280 transitions. [2022-11-22 02:44:33,807 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, (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 02:44:33,807 INFO L276 IsEmpty]: Start isEmpty. Operand 13260 states and 18280 transitions. [2022-11-22 02:44:33,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-22 02:44:33,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:33,811 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 4, 4, 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] [2022-11-22 02:44:33,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 02:44:33,811 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 02:44:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:33,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1336243758, now seen corresponding path program 1 times [2022-11-22 02:44:33,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:33,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562449936] [2022-11-22 02:44:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:33,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2022-11-22 02:44:34,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:34,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562449936] [2022-11-22 02:44:34,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562449936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:34,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:34,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:44:34,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247626530] [2022-11-22 02:44:34,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:34,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:44:34,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:34,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:44:34,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:44:34,199 INFO L87 Difference]: Start difference. First operand 13260 states and 18280 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 02:44:37,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:37,587 INFO L93 Difference]: Finished difference Result 13266 states and 18285 transitions. [2022-11-22 02:44:37,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:37,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 170 [2022-11-22 02:44:37,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:37,641 INFO L225 Difference]: With dead ends: 13266 [2022-11-22 02:44:37,641 INFO L226 Difference]: Without dead ends: 13264 [2022-11-22 02:44:37,651 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 02:44:37,652 INFO L413 NwaCegarLoop]: 2453 mSDtfsCounter, 2720 mSDsluCounter, 4886 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2725 SdHoareTripleChecker+Valid, 7339 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:37,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2725 Valid, 7339 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-22 02:44:37,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13264 states. [2022-11-22 02:44:38,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13264 to 13264. [2022-11-22 02:44:38,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13264 states, 7471 states have (on average 1.2290188729755054) internal successors, (9182), 7834 states have internal predecessors, (9182), 4532 states have call successors, (4532), 1275 states have call predecessors, (4532), 1258 states have return successors, (4569), 4400 states have call predecessors, (4569), 4529 states have call successors, (4569) [2022-11-22 02:44:38,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13264 states to 13264 states and 18283 transitions. [2022-11-22 02:44:38,554 INFO L78 Accepts]: Start accepts. Automaton has 13264 states and 18283 transitions. Word has length 170 [2022-11-22 02:44:38,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:38,554 INFO L495 AbstractCegarLoop]: Abstraction has 13264 states and 18283 transitions. [2022-11-22 02:44:38,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 02:44:38,554 INFO L276 IsEmpty]: Start isEmpty. Operand 13264 states and 18283 transitions. [2022-11-22 02:44:38,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-22 02:44:38,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:38,558 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 4, 4, 3, 3, 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] [2022-11-22 02:44:38,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 02:44:38,559 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 02:44:38,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:38,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1837318563, now seen corresponding path program 1 times [2022-11-22 02:44:38,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:38,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277036000] [2022-11-22 02:44:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:38,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2022-11-22 02:44:38,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:38,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277036000] [2022-11-22 02:44:38,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277036000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:38,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:38,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:44:38,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843226718] [2022-11-22 02:44:38,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:38,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:44:38,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:38,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:44:38,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:44:38,793 INFO L87 Difference]: Start difference. First operand 13264 states and 18283 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-22 02:44:42,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:42,960 INFO L93 Difference]: Finished difference Result 28248 states and 38812 transitions. [2022-11-22 02:44:42,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:44:42,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 168 [2022-11-22 02:44:42,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:43,004 INFO L225 Difference]: With dead ends: 28248 [2022-11-22 02:44:43,004 INFO L226 Difference]: Without dead ends: 15054 [2022-11-22 02:44:43,057 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 02:44:43,057 INFO L413 NwaCegarLoop]: 3167 mSDtfsCounter, 893 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 5579 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:43,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 5579 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-22 02:44:43,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15054 states. [2022-11-22 02:44:44,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15054 to 14993. [2022-11-22 02:44:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14993 states, 8473 states have (on average 1.2264841260474448) internal successors, (10392), 8866 states have internal predecessors, (10392), 5034 states have call successors, (5034), 1500 states have call predecessors, (5034), 1483 states have return successors, (5071), 4890 states have call predecessors, (5071), 5031 states have call successors, (5071) [2022-11-22 02:44:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14993 states to 14993 states and 20497 transitions. [2022-11-22 02:44:44,157 INFO L78 Accepts]: Start accepts. Automaton has 14993 states and 20497 transitions. Word has length 168 [2022-11-22 02:44:44,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:44,158 INFO L495 AbstractCegarLoop]: Abstraction has 14993 states and 20497 transitions. [2022-11-22 02:44:44,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-22 02:44:44,158 INFO L276 IsEmpty]: Start isEmpty. Operand 14993 states and 20497 transitions. [2022-11-22 02:44:44,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-22 02:44:44,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:44,162 INFO L195 NwaCegarLoop]: trace histogram [12, 9, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 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] [2022-11-22 02:44:44,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 02:44:44,162 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 02:44:44,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:44,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1219732472, now seen corresponding path program 1 times [2022-11-22 02:44:44,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:44,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164213365] [2022-11-22 02:44:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:44,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2022-11-22 02:44:44,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:44,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164213365] [2022-11-22 02:44:44,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164213365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:44,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:44,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:44:44,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124573981] [2022-11-22 02:44:44,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:44,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:44:44,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:44,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:44:44,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:44:44,561 INFO L87 Difference]: Start difference. First operand 14993 states and 20497 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, (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 02:44:48,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:48,334 INFO L93 Difference]: Finished difference Result 14999 states and 20502 transitions. [2022-11-22 02:44:48,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:48,334 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, (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 184 [2022-11-22 02:44:48,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:48,392 INFO L225 Difference]: With dead ends: 14999 [2022-11-22 02:44:48,392 INFO L226 Difference]: Without dead ends: 14997 [2022-11-22 02:44:48,399 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 02:44:48,399 INFO L413 NwaCegarLoop]: 2453 mSDtfsCounter, 2716 mSDsluCounter, 4886 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2720 SdHoareTripleChecker+Valid, 7339 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:48,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2720 Valid, 7339 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-22 02:44:48,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14997 states. [2022-11-22 02:44:49,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14997 to 14997. [2022-11-22 02:44:49,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14997 states, 8476 states have (on average 1.2264039641340254) internal successors, (10395), 8869 states have internal predecessors, (10395), 5034 states have call successors, (5034), 1501 states have call predecessors, (5034), 1484 states have return successors, (5071), 4890 states have call predecessors, (5071), 5031 states have call successors, (5071) [2022-11-22 02:44:49,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14997 states to 14997 states and 20500 transitions. [2022-11-22 02:44:49,439 INFO L78 Accepts]: Start accepts. Automaton has 14997 states and 20500 transitions. Word has length 184 [2022-11-22 02:44:49,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:49,440 INFO L495 AbstractCegarLoop]: Abstraction has 14997 states and 20500 transitions. [2022-11-22 02:44:49,440 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, (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 02:44:49,440 INFO L276 IsEmpty]: Start isEmpty. Operand 14997 states and 20500 transitions. [2022-11-22 02:44:49,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-22 02:44:49,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:49,444 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 9, 9, 8, 8, 8, 8, 8, 8, 6, 6, 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] [2022-11-22 02:44:49,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 02:44:49,444 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 02:44:49,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:49,445 INFO L85 PathProgramCache]: Analyzing trace with hash 310003537, now seen corresponding path program 1 times [2022-11-22 02:44:49,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:49,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788552405] [2022-11-22 02:44:49,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:49,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:49,863 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2022-11-22 02:44:49,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:49,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788552405] [2022-11-22 02:44:49,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788552405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:49,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:49,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:44:49,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517083182] [2022-11-22 02:44:49,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:49,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:44:49,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:49,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:44:49,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:44:49,866 INFO L87 Difference]: Start difference. First operand 14997 states and 20500 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, (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 02:44:53,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:53,696 INFO L93 Difference]: Finished difference Result 15003 states and 20505 transitions. [2022-11-22 02:44:53,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:53,696 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, (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 189 [2022-11-22 02:44:53,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:53,734 INFO L225 Difference]: With dead ends: 15003 [2022-11-22 02:44:53,734 INFO L226 Difference]: Without dead ends: 15001 [2022-11-22 02:44:53,739 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 02:44:53,740 INFO L413 NwaCegarLoop]: 2453 mSDtfsCounter, 2716 mSDsluCounter, 4886 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2719 SdHoareTripleChecker+Valid, 7339 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:53,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2719 Valid, 7339 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-22 02:44:53,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15001 states. [2022-11-22 02:44:54,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15001 to 15001. [2022-11-22 02:44:54,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15001 states, 8479 states have (on average 1.2263238589456305) internal successors, (10398), 8872 states have internal predecessors, (10398), 5034 states have call successors, (5034), 1502 states have call predecessors, (5034), 1485 states have return successors, (5071), 4890 states have call predecessors, (5071), 5031 states have call successors, (5071) [2022-11-22 02:44:54,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15001 states to 15001 states and 20503 transitions. [2022-11-22 02:44:54,667 INFO L78 Accepts]: Start accepts. Automaton has 15001 states and 20503 transitions. Word has length 189 [2022-11-22 02:44:54,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:54,667 INFO L495 AbstractCegarLoop]: Abstraction has 15001 states and 20503 transitions. [2022-11-22 02:44:54,667 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, (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 02:44:54,667 INFO L276 IsEmpty]: Start isEmpty. Operand 15001 states and 20503 transitions. [2022-11-22 02:44:54,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-22 02:44:54,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:54,670 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 10, 10, 8, 8, 8, 8, 8, 8, 4, 4, 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 02:44:54,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 02:44:54,670 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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 02:44:54,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:54,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1010386619, now seen corresponding path program 1 times [2022-11-22 02:44:54,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:54,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172700049] [2022-11-22 02:44:54,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:54,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:55,122 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2022-11-22 02:44:55,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:55,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172700049] [2022-11-22 02:44:55,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172700049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:55,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:55,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:44:55,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252211074] [2022-11-22 02:44:55,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:55,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:44:55,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:55,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:44:55,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:44:55,127 INFO L87 Difference]: Start difference. First operand 15001 states and 20503 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 02:44:58,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:58,830 INFO L93 Difference]: Finished difference Result 15007 states and 20508 transitions. [2022-11-22 02:44:58,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:44:58,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 185 [2022-11-22 02:44:58,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:58,889 INFO L225 Difference]: With dead ends: 15007 [2022-11-22 02:44:58,889 INFO L226 Difference]: Without dead ends: 15005 [2022-11-22 02:44:58,898 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 02:44:58,898 INFO L413 NwaCegarLoop]: 2453 mSDtfsCounter, 2720 mSDsluCounter, 4886 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 7339 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:58,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2722 Valid, 7339 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-22 02:44:58,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15005 states. [2022-11-22 02:45:00,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15005 to 15005. [2022-11-22 02:45:00,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15005 states, 8482 states have (on average 1.2262438104220703) internal successors, (10401), 8875 states have internal predecessors, (10401), 5034 states have call successors, (5034), 1503 states have call predecessors, (5034), 1486 states have return successors, (5071), 4890 states have call predecessors, (5071), 5031 states have call successors, (5071) [2022-11-22 02:45:00,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15005 states to 15005 states and 20506 transitions. [2022-11-22 02:45:00,267 INFO L78 Accepts]: Start accepts. Automaton has 15005 states and 20506 transitions. Word has length 185 [2022-11-22 02:45:00,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:00,268 INFO L495 AbstractCegarLoop]: Abstraction has 15005 states and 20506 transitions. [2022-11-22 02:45:00,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 02:45:00,268 INFO L276 IsEmpty]: Start isEmpty. Operand 15005 states and 20506 transitions. [2022-11-22 02:45:00,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-22 02:45:00,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:00,271 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 8, 8, 8, 8, 8, 8, 4, 4, 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] [2022-11-22 02:45:00,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 02:45:00,271 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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 02:45:00,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:00,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1210389998, now seen corresponding path program 1 times [2022-11-22 02:45:00,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:00,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094034455] [2022-11-22 02:45:00,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:00,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2022-11-22 02:45:00,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:00,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094034455] [2022-11-22 02:45:00,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094034455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:00,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:00,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:45:00,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564009376] [2022-11-22 02:45:00,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:00,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:45:00,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:00,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:45:00,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:45:00,650 INFO L87 Difference]: Start difference. First operand 15005 states and 20506 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 02:45:05,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:05,068 INFO L93 Difference]: Finished difference Result 15011 states and 20511 transitions. [2022-11-22 02:45:05,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:45:05,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 190 [2022-11-22 02:45:05,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:05,117 INFO L225 Difference]: With dead ends: 15011 [2022-11-22 02:45:05,118 INFO L226 Difference]: Without dead ends: 15007 [2022-11-22 02:45:05,126 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 02:45:05,127 INFO L413 NwaCegarLoop]: 2453 mSDtfsCounter, 2720 mSDsluCounter, 4886 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2721 SdHoareTripleChecker+Valid, 7339 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:05,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2721 Valid, 7339 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-22 02:45:05,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15007 states. [2022-11-22 02:45:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15007 to 15007. [2022-11-22 02:45:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15007 states, 8484 states have (on average 1.226072607260726) internal successors, (10402), 8876 states have internal predecessors, (10402), 5034 states have call successors, (5034), 1504 states have call predecessors, (5034), 1486 states have return successors, (5071), 4890 states have call predecessors, (5071), 5031 states have call successors, (5071) [2022-11-22 02:45:06,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15007 states to 15007 states and 20507 transitions. [2022-11-22 02:45:06,282 INFO L78 Accepts]: Start accepts. Automaton has 15007 states and 20507 transitions. Word has length 190 [2022-11-22 02:45:06,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:06,282 INFO L495 AbstractCegarLoop]: Abstraction has 15007 states and 20507 transitions. [2022-11-22 02:45:06,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 02:45:06,283 INFO L276 IsEmpty]: Start isEmpty. Operand 15007 states and 20507 transitions. [2022-11-22 02:45:06,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-22 02:45:06,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:06,285 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 8, 8, 8, 8, 8, 8, 6, 6, 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] [2022-11-22 02:45:06,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 02:45:06,285 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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 02:45:06,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:06,286 INFO L85 PathProgramCache]: Analyzing trace with hash -179295560, now seen corresponding path program 1 times [2022-11-22 02:45:06,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:06,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321737529] [2022-11-22 02:45:06,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:06,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:06,656 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2022-11-22 02:45:06,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:06,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321737529] [2022-11-22 02:45:06,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321737529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:06,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:06,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:45:06,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128904741] [2022-11-22 02:45:06,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:06,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:45:06,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:06,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:45:06,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:45:06,660 INFO L87 Difference]: Start difference. First operand 15007 states and 20507 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, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 02:45:10,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:10,955 INFO L93 Difference]: Finished difference Result 15007 states and 20507 transitions. [2022-11-22 02:45:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:45:10,955 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, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 204 [2022-11-22 02:45:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:10,995 INFO L225 Difference]: With dead ends: 15007 [2022-11-22 02:45:10,995 INFO L226 Difference]: Without dead ends: 14856 [2022-11-22 02:45:11,002 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 02:45:11,003 INFO L413 NwaCegarLoop]: 2451 mSDtfsCounter, 2712 mSDsluCounter, 4885 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2712 SdHoareTripleChecker+Valid, 7336 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:11,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2712 Valid, 7336 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-22 02:45:11,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14856 states. [2022-11-22 02:45:12,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14856 to 14856. [2022-11-22 02:45:12,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14856 states, 8426 states have (on average 1.2238309992879184) internal successors, (10312), 8786 states have internal predecessors, (10312), 4955 states have call successors, (4955), 1489 states have call predecessors, (4955), 1473 states have return successors, (4995), 4844 states have call predecessors, (4995), 4955 states have call successors, (4995) [2022-11-22 02:45:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14856 states to 14856 states and 20262 transitions. [2022-11-22 02:45:12,222 INFO L78 Accepts]: Start accepts. Automaton has 14856 states and 20262 transitions. Word has length 204 [2022-11-22 02:45:12,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:12,223 INFO L495 AbstractCegarLoop]: Abstraction has 14856 states and 20262 transitions. [2022-11-22 02:45:12,223 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, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 02:45:12,223 INFO L276 IsEmpty]: Start isEmpty. Operand 14856 states and 20262 transitions. [2022-11-22 02:45:12,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-22 02:45:12,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:12,226 INFO L195 NwaCegarLoop]: trace histogram [16, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 02:45:12,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 02:45:12,227 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 02:45:12,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:12,227 INFO L85 PathProgramCache]: Analyzing trace with hash -832367508, now seen corresponding path program 1 times [2022-11-22 02:45:12,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:12,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084203305] [2022-11-22 02:45:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:12,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:12,921 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2022-11-22 02:45:12,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:12,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084203305] [2022-11-22 02:45:12,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084203305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:12,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:12,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:45:12,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328499630] [2022-11-22 02:45:12,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:12,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:45:12,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:12,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:45:12,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:45:12,925 INFO L87 Difference]: Start difference. First operand 14856 states and 20262 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 02:45:17,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:17,966 INFO L93 Difference]: Finished difference Result 14892 states and 20296 transitions. [2022-11-22 02:45:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:45:17,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 230 [2022-11-22 02:45:17,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:18,003 INFO L225 Difference]: With dead ends: 14892 [2022-11-22 02:45:18,003 INFO L226 Difference]: Without dead ends: 14890 [2022-11-22 02:45:18,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 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 02:45:18,009 INFO L413 NwaCegarLoop]: 2429 mSDtfsCounter, 1548 mSDsluCounter, 5908 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 8337 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:18,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 8337 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-22 02:45:18,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14890 states. [2022-11-22 02:45:19,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14890 to 14888. [2022-11-22 02:45:19,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14888 states, 8450 states have (on average 1.2215384615384615) internal successors, (10322), 8810 states have internal predecessors, (10322), 4955 states have call successors, (4955), 1497 states have call predecessors, (4955), 1481 states have return successors, (4995), 4844 states have call predecessors, (4995), 4955 states have call successors, (4995) [2022-11-22 02:45:19,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14888 states to 14888 states and 20272 transitions. [2022-11-22 02:45:19,179 INFO L78 Accepts]: Start accepts. Automaton has 14888 states and 20272 transitions. Word has length 230 [2022-11-22 02:45:19,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:19,180 INFO L495 AbstractCegarLoop]: Abstraction has 14888 states and 20272 transitions. [2022-11-22 02:45:19,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 02:45:19,180 INFO L276 IsEmpty]: Start isEmpty. Operand 14888 states and 20272 transitions. [2022-11-22 02:45:19,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-11-22 02:45:19,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:19,185 INFO L195 NwaCegarLoop]: trace histogram [15, 10, 10, 8, 8, 8, 8, 8, 8, 3, 3, 3, 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] [2022-11-22 02:45:19,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 02:45:19,185 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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 02:45:19,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:19,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1706550882, now seen corresponding path program 1 times [2022-11-22 02:45:19,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:19,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721971273] [2022-11-22 02:45:19,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:19,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:19,467 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2022-11-22 02:45:19,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:19,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721971273] [2022-11-22 02:45:19,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721971273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:19,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:19,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:45:19,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320170] [2022-11-22 02:45:19,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:19,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:45:19,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:19,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:45:19,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:45:19,470 INFO L87 Difference]: Start difference. First operand 14888 states and 20272 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 02:45:23,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:23,441 INFO L93 Difference]: Finished difference Result 29730 states and 40564 transitions. [2022-11-22 02:45:23,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:45:23,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 260 [2022-11-22 02:45:23,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:23,506 INFO L225 Difference]: With dead ends: 29730 [2022-11-22 02:45:23,506 INFO L226 Difference]: Without dead ends: 14912 [2022-11-22 02:45:23,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:45:23,686 INFO L413 NwaCegarLoop]: 2409 mSDtfsCounter, 5 mSDsluCounter, 4812 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7221 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:23,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7221 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-22 02:45:23,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14912 states. [2022-11-22 02:45:25,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14912 to 14908. [2022-11-22 02:45:25,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14908 states, 8466 states have (on average 1.221119773210489) internal successors, (10338), 8830 states have internal predecessors, (10338), 4955 states have call successors, (4955), 1497 states have call predecessors, (4955), 1485 states have return successors, (4999), 4844 states have call predecessors, (4999), 4955 states have call successors, (4999) [2022-11-22 02:45:25,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14908 states to 14908 states and 20292 transitions. [2022-11-22 02:45:25,282 INFO L78 Accepts]: Start accepts. Automaton has 14908 states and 20292 transitions. Word has length 260 [2022-11-22 02:45:25,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:25,282 INFO L495 AbstractCegarLoop]: Abstraction has 14908 states and 20292 transitions. [2022-11-22 02:45:25,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 02:45:25,283 INFO L276 IsEmpty]: Start isEmpty. Operand 14908 states and 20292 transitions. [2022-11-22 02:45:25,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-22 02:45:25,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:25,288 INFO L195 NwaCegarLoop]: trace histogram [16, 9, 9, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 02:45:25,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 02:45:25,288 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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 02:45:25,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:25,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2000671655, now seen corresponding path program 1 times [2022-11-22 02:45:25,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:25,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843793473] [2022-11-22 02:45:25,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:25,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2022-11-22 02:45:25,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:25,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843793473] [2022-11-22 02:45:25,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843793473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:25,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:25,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:45:25,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587687942] [2022-11-22 02:45:25,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:25,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:45:25,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:25,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:45:25,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:45:25,903 INFO L87 Difference]: Start difference. First operand 14908 states and 20292 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-22 02:45:30,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:30,965 INFO L93 Difference]: Finished difference Result 14910 states and 20293 transitions. [2022-11-22 02:45:30,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:45:30,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 262 [2022-11-22 02:45:30,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:31,024 INFO L225 Difference]: With dead ends: 14910 [2022-11-22 02:45:31,024 INFO L226 Difference]: Without dead ends: 14908 [2022-11-22 02:45:31,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:45:31,037 INFO L413 NwaCegarLoop]: 2414 mSDtfsCounter, 1131 mSDsluCounter, 6205 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 8619 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:31,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 8619 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-22 02:45:31,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14908 states. [2022-11-22 02:45:32,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14908 to 14908. [2022-11-22 02:45:32,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14908 states, 8466 states have (on average 1.218521143397118) internal successors, (10316), 8830 states have internal predecessors, (10316), 4955 states have call successors, (4955), 1497 states have call predecessors, (4955), 1485 states have return successors, (4999), 4844 states have call predecessors, (4999), 4955 states have call successors, (4999) [2022-11-22 02:45:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14908 states to 14908 states and 20270 transitions. [2022-11-22 02:45:32,339 INFO L78 Accepts]: Start accepts. Automaton has 14908 states and 20270 transitions. Word has length 262 [2022-11-22 02:45:32,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:32,339 INFO L495 AbstractCegarLoop]: Abstraction has 14908 states and 20270 transitions. [2022-11-22 02:45:32,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-22 02:45:32,340 INFO L276 IsEmpty]: Start isEmpty. Operand 14908 states and 20270 transitions. [2022-11-22 02:45:32,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-11-22 02:45:32,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:32,349 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-11-22 02:45:32,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-22 02:45:32,350 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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 02:45:32,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:32,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1313085353, now seen corresponding path program 1 times [2022-11-22 02:45:32,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:32,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115387769] [2022-11-22 02:45:32,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:32,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:32,514 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:45:32,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853779691] [2022-11-22 02:45:32,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:32,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:45:32,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:45:32,522 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:45:32,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:45:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:34,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 4382 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:45:34,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:45:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-11-22 02:45:34,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:45:34,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:34,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115387769] [2022-11-22 02:45:34,227 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:45:34,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853779691] [2022-11-22 02:45:34,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853779691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:34,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:34,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:45:34,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808691000] [2022-11-22 02:45:34,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:34,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:45:34,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:34,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:45:34,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:45:34,231 INFO L87 Difference]: Start difference. First operand 14908 states and 20270 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-22 02:45:38,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:38,038 INFO L93 Difference]: Finished difference Result 31688 states and 43582 transitions. [2022-11-22 02:45:38,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:45:38,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 369 [2022-11-22 02:45:38,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:38,105 INFO L225 Difference]: With dead ends: 31688 [2022-11-22 02:45:38,105 INFO L226 Difference]: Without dead ends: 16850 [2022-11-22 02:45:38,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 367 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 02:45:38,160 INFO L413 NwaCegarLoop]: 2690 mSDtfsCounter, 163 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 5167 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:38,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 5167 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-22 02:45:38,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16850 states. [2022-11-22 02:45:39,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16850 to 14914. [2022-11-22 02:45:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14914 states, 8472 states have (on average 1.2183663833805476) internal successors, (10322), 8836 states have internal predecessors, (10322), 4955 states have call successors, (4955), 1497 states have call predecessors, (4955), 1485 states have return successors, (4999), 4844 states have call predecessors, (4999), 4955 states have call successors, (4999) [2022-11-22 02:45:39,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14914 states to 14914 states and 20276 transitions. [2022-11-22 02:45:39,561 INFO L78 Accepts]: Start accepts. Automaton has 14914 states and 20276 transitions. Word has length 369 [2022-11-22 02:45:39,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:39,561 INFO L495 AbstractCegarLoop]: Abstraction has 14914 states and 20276 transitions. [2022-11-22 02:45:39,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-22 02:45:39,562 INFO L276 IsEmpty]: Start isEmpty. Operand 14914 states and 20276 transitions. [2022-11-22 02:45:39,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-11-22 02:45:39,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:39,572 INFO L195 NwaCegarLoop]: trace histogram [17, 12, 12, 9, 9, 9, 9, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-11-22 02:45:39,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:45:39,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-22 02:45:39,787 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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 02:45:39,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:39,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2095185150, now seen corresponding path program 1 times [2022-11-22 02:45:39,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:39,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929157570] [2022-11-22 02:45:39,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:39,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:39,962 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:45:39,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853673349] [2022-11-22 02:45:39,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:39,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:45:39,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:45:39,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:45:39,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:45:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:41,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 4502 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:45:41,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:45:41,790 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2022-11-22 02:45:41,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:45:41,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:41,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929157570] [2022-11-22 02:45:41,790 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:45:41,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853673349] [2022-11-22 02:45:41,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853673349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:41,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:41,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:45:41,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848327923] [2022-11-22 02:45:41,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:41,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:45:41,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:41,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:45:41,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:45:41,793 INFO L87 Difference]: Start difference. First operand 14914 states and 20276 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-22 02:45:47,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:47,101 INFO L93 Difference]: Finished difference Result 29812 states and 40612 transitions. [2022-11-22 02:45:47,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:45:47,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 384 [2022-11-22 02:45:47,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:47,142 INFO L225 Difference]: With dead ends: 29812 [2022-11-22 02:45:47,142 INFO L226 Difference]: Without dead ends: 14968 [2022-11-22 02:45:47,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:45:47,180 INFO L413 NwaCegarLoop]: 2415 mSDtfsCounter, 13 mSDsluCounter, 4819 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 7234 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:47,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 7234 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-22 02:45:47,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14968 states. [2022-11-22 02:45:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14968 to 14926. [2022-11-22 02:45:48,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14926 states, 8484 states have (on average 1.2180575200377182) internal successors, (10334), 8848 states have internal predecessors, (10334), 4955 states have call successors, (4955), 1497 states have call predecessors, (4955), 1485 states have return successors, (4999), 4844 states have call predecessors, (4999), 4955 states have call successors, (4999) [2022-11-22 02:45:48,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14926 states to 14926 states and 20288 transitions. [2022-11-22 02:45:48,325 INFO L78 Accepts]: Start accepts. Automaton has 14926 states and 20288 transitions. Word has length 384 [2022-11-22 02:45:48,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:48,326 INFO L495 AbstractCegarLoop]: Abstraction has 14926 states and 20288 transitions. [2022-11-22 02:45:48,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-22 02:45:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 14926 states and 20288 transitions. [2022-11-22 02:45:48,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2022-11-22 02:45:48,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:48,333 INFO L195 NwaCegarLoop]: trace histogram [17, 12, 12, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 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 02:45:48,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:45:48,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:45:48,547 INFO L420 AbstractCegarLoop]: === Iteration 24 === 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 02:45:48,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:48,547 INFO L85 PathProgramCache]: Analyzing trace with hash -797402376, now seen corresponding path program 1 times [2022-11-22 02:45:48,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:48,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052719192] [2022-11-22 02:45:48,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:48,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:48,703 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:45:48,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444462524] [2022-11-22 02:45:48,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:48,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:45:48,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:45:48,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:45:48,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:45:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:50,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 4674 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:45:50,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:45:50,417 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-11-22 02:45:50,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:45:50,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:50,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052719192] [2022-11-22 02:45:50,418 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:45:50,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444462524] [2022-11-22 02:45:50,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444462524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:50,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:50,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:45:50,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416070298] [2022-11-22 02:45:50,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:50,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:45:50,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:50,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:45:50,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:45:50,421 INFO L87 Difference]: Start difference. First operand 14926 states and 20288 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-22 02:45:54,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:54,824 INFO L93 Difference]: Finished difference Result 29842 states and 40648 transitions. [2022-11-22 02:45:54,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:45:54,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 400 [2022-11-22 02:45:54,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:54,879 INFO L225 Difference]: With dead ends: 29842 [2022-11-22 02:45:54,879 INFO L226 Difference]: Without dead ends: 14986 [2022-11-22 02:45:54,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:45:54,925 INFO L413 NwaCegarLoop]: 2419 mSDtfsCounter, 13 mSDsluCounter, 4819 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 7238 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:54,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 7238 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-22 02:45:54,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14986 states. [2022-11-22 02:45:56,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14986 to 14938. [2022-11-22 02:45:56,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14938 states, 8496 states have (on average 1.2177495291902072) internal successors, (10346), 8860 states have internal predecessors, (10346), 4955 states have call successors, (4955), 1497 states have call predecessors, (4955), 1485 states have return successors, (4999), 4844 states have call predecessors, (4999), 4955 states have call successors, (4999) [2022-11-22 02:45:56,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14938 states to 14938 states and 20300 transitions. [2022-11-22 02:45:56,484 INFO L78 Accepts]: Start accepts. Automaton has 14938 states and 20300 transitions. Word has length 400 [2022-11-22 02:45:56,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:56,485 INFO L495 AbstractCegarLoop]: Abstraction has 14938 states and 20300 transitions. [2022-11-22 02:45:56,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-22 02:45:56,485 INFO L276 IsEmpty]: Start isEmpty. Operand 14938 states and 20300 transitions. [2022-11-22 02:45:56,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-22 02:45:56,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:56,493 INFO L195 NwaCegarLoop]: trace histogram [17, 12, 12, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:45:56,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:45:56,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:45:56,709 INFO L420 AbstractCegarLoop]: === Iteration 25 === 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 02:45:56,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:56,710 INFO L85 PathProgramCache]: Analyzing trace with hash -467985871, now seen corresponding path program 1 times [2022-11-22 02:45:56,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:56,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761450091] [2022-11-22 02:45:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:56,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:56,901 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:45:56,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737387110] [2022-11-22 02:45:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:56,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:45:56,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:45:56,903 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:45:56,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:45:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:58,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 5052 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:45:58,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:45:58,867 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2022-11-22 02:45:58,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:45:58,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:58,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761450091] [2022-11-22 02:45:58,868 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:45:58,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737387110] [2022-11-22 02:45:58,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737387110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:58,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:58,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:45:58,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291978231] [2022-11-22 02:45:58,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:58,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:45:58,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:58,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:45:58,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:45:58,871 INFO L87 Difference]: Start difference. First operand 14938 states and 20300 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-22 02:46:03,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:03,207 INFO L93 Difference]: Finished difference Result 29872 states and 40684 transitions. [2022-11-22 02:46:03,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:46:03,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 430 [2022-11-22 02:46:03,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:03,264 INFO L225 Difference]: With dead ends: 29872 [2022-11-22 02:46:03,265 INFO L226 Difference]: Without dead ends: 15004 [2022-11-22 02:46:03,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:46:03,303 INFO L413 NwaCegarLoop]: 2421 mSDtfsCounter, 13 mSDsluCounter, 4822 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 7243 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:03,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 7243 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-22 02:46:03,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15004 states. [2022-11-22 02:46:04,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15004 to 14950. [2022-11-22 02:46:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14950 states, 8508 states have (on average 1.2174424071462153) internal successors, (10358), 8872 states have internal predecessors, (10358), 4955 states have call successors, (4955), 1497 states have call predecessors, (4955), 1485 states have return successors, (4999), 4844 states have call predecessors, (4999), 4955 states have call successors, (4999) [2022-11-22 02:46:04,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14950 states to 14950 states and 20312 transitions. [2022-11-22 02:46:04,644 INFO L78 Accepts]: Start accepts. Automaton has 14950 states and 20312 transitions. Word has length 430 [2022-11-22 02:46:04,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:04,645 INFO L495 AbstractCegarLoop]: Abstraction has 14950 states and 20312 transitions. [2022-11-22 02:46:04,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-22 02:46:04,645 INFO L276 IsEmpty]: Start isEmpty. Operand 14950 states and 20312 transitions. [2022-11-22 02:46:04,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2022-11-22 02:46:04,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:04,658 INFO L195 NwaCegarLoop]: trace histogram [17, 12, 12, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:04,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:46:04,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-22 02:46:04,875 INFO L420 AbstractCegarLoop]: === Iteration 26 === 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 02:46:04,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:04,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2115762109, now seen corresponding path program 1 times [2022-11-22 02:46:04,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:04,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875690210] [2022-11-22 02:46:04,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:04,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:05,044 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:46:05,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501557968] [2022-11-22 02:46:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:05,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:46:05,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:46:05,047 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:46:05,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:46:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:06,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 5107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:46:06,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:46:06,982 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2022-11-22 02:46:06,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:46:06,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:06,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875690210] [2022-11-22 02:46:06,983 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:46:06,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501557968] [2022-11-22 02:46:06,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501557968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:06,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:06,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:46:06,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908678962] [2022-11-22 02:46:06,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:06,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:46:06,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:06,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:46:06,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:46:06,986 INFO L87 Difference]: Start difference. First operand 14950 states and 20312 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-22 02:46:12,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:12,486 INFO L93 Difference]: Finished difference Result 29902 states and 40716 transitions. [2022-11-22 02:46:12,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:46:12,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 435 [2022-11-22 02:46:12,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:12,536 INFO L225 Difference]: With dead ends: 29902 [2022-11-22 02:46:12,536 INFO L226 Difference]: Without dead ends: 15022 [2022-11-22 02:46:12,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:46:12,576 INFO L413 NwaCegarLoop]: 2423 mSDtfsCounter, 13 mSDsluCounter, 4825 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 7248 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:12,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 7248 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-22 02:46:12,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15022 states. [2022-11-22 02:46:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15022 to 14962. [2022-11-22 02:46:13,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14962 states, 8520 states have (on average 1.2171361502347418) internal successors, (10370), 8884 states have internal predecessors, (10370), 4955 states have call successors, (4955), 1497 states have call predecessors, (4955), 1485 states have return successors, (4999), 4844 states have call predecessors, (4999), 4955 states have call successors, (4999) [2022-11-22 02:46:13,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14962 states to 14962 states and 20324 transitions. [2022-11-22 02:46:13,902 INFO L78 Accepts]: Start accepts. Automaton has 14962 states and 20324 transitions. Word has length 435 [2022-11-22 02:46:13,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:13,902 INFO L495 AbstractCegarLoop]: Abstraction has 14962 states and 20324 transitions. [2022-11-22 02:46:13,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-22 02:46:13,903 INFO L276 IsEmpty]: Start isEmpty. Operand 14962 states and 20324 transitions. [2022-11-22 02:46:13,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-11-22 02:46:13,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:13,915 INFO L195 NwaCegarLoop]: trace histogram [17, 12, 12, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:13,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:46:14,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-22 02:46:14,132 INFO L420 AbstractCegarLoop]: === Iteration 27 === 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 02:46:14,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:14,133 INFO L85 PathProgramCache]: Analyzing trace with hash -383748211, now seen corresponding path program 1 times [2022-11-22 02:46:14,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:14,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885707967] [2022-11-22 02:46:14,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:14,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:14,311 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:46:14,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515731562] [2022-11-22 02:46:14,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:14,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:46:14,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:46:14,313 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:46:14,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc523b4-7763-4cb8-a944-f4e440b809f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:46:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:16,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 5110 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:46:16,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:46:16,371 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 170 proven. 1 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-11-22 02:46:16,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:46:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2022-11-22 02:46:17,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:17,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885707967] [2022-11-22 02:46:17,048 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:46:17,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515731562] [2022-11-22 02:46:17,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515731562] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:46:17,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2007614910] [2022-11-22 02:46:17,085 INFO L159 IcfgInterpreter]: Started Sifa with 237 locations of interest [2022-11-22 02:46:17,085 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:46:17,091 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:46:17,096 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:46:17,097 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:54:27,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-22 02:54:27,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 02:54:27,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:54:28,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:54:28,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:54:28,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:54:57,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:54:57,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:54:57,787 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 02:54:57,791 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 02:54:58,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:54:58,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:54:58,871 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 02:54:58,880 WARN L207 Elim1Store]: Array PQE input equivalent to false