./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_36f079e8-ec47-4c82-be4b-2eeb557e83b1/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/bin/utaipan-7li7fVZpFI --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 bf04605b927a140287b1c754ad26365df4778b673325ded7dfdba05deed83fbc --- 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-5e519f3 [2022-11-03 02:15:47,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:15:47,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:15:47,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:15:47,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:15:47,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:15:47,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:15:47,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:15:47,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:15:47,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:15:47,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:15:47,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:15:47,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:15:47,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:15:47,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:15:47,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:15:47,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:15:47,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:15:47,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:15:47,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:15:47,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:15:47,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:15:47,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:15:47,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:15:47,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:15:47,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:15:47,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:15:47,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:15:47,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:15:47,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:15:47,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:15:47,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:15:47,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:15:47,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:15:47,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:15:47,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:15:47,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:15:47,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:15:47,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:15:47,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:15:47,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:15:47,664 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:15:47,686 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:15:47,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:15:47,687 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:15:47,687 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:15:47,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:15:47,688 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:15:47,688 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:15:47,688 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:15:47,688 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:15:47,689 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:15:47,689 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:15:47,689 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:15:47,689 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:15:47,689 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:15:47,690 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:15:47,690 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:15:47,690 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:15:47,690 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:15:47,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:15:47,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:15:47,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:15:47,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:15:47,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:15:47,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:15:47,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:15:47,692 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:15:47,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:15:47,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:15:47,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:15:47,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:15:47,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:15:47,694 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:15:47,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:15:47,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:15:47,694 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:15:47,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:15:47,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:15:47,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:15:47,700 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_36f079e8-ec47-4c82-be4b-2eeb557e83b1/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf04605b927a140287b1c754ad26365df4778b673325ded7dfdba05deed83fbc [2022-11-03 02:15:48,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:15:48,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:15:48,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:15:48,037 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:15:48,038 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:15:48,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2022-11-03 02:15:48,125 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/bin/utaipan-7li7fVZpFI/data/6fa34aa3b/dabb4b25b1f64c678381a1d5cc166835/FLAGf2cfe31b2 [2022-11-03 02:15:49,146 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:15:49,148 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2022-11-03 02:15:49,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/bin/utaipan-7li7fVZpFI/data/6fa34aa3b/dabb4b25b1f64c678381a1d5cc166835/FLAGf2cfe31b2 [2022-11-03 02:15:49,615 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/bin/utaipan-7li7fVZpFI/data/6fa34aa3b/dabb4b25b1f64c678381a1d5cc166835 [2022-11-03 02:15:49,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:15:49,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:15:49,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:15:49,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:15:49,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:15:49,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:15:49" (1/1) ... [2022-11-03 02:15:49,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d3f123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:49, skipping insertion in model container [2022-11-03 02:15:49,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:15:49" (1/1) ... [2022-11-03 02:15:49,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:15:49,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:15:54,234 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422318,422331] [2022-11-03 02:15:54,237 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422487,422500] [2022-11-03 02:15:54,238 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422654,422667] [2022-11-03 02:15:54,238 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422822,422835] [2022-11-03 02:15:54,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:15:54,319 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:15:54,933 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422318,422331] [2022-11-03 02:15:54,934 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422487,422500] [2022-11-03 02:15:54,934 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422654,422667] [2022-11-03 02:15:54,935 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422822,422835] [2022-11-03 02:15:54,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:15:55,349 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:15:55,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:55 WrapperNode [2022-11-03 02:15:55,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:15:55,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:15:55,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:15:55,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:15:55,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:55" (1/1) ... [2022-11-03 02:15:55,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:55" (1/1) ... [2022-11-03 02:15:55,879 INFO L138 Inliner]: procedures = 559, calls = 2867, calls flagged for inlining = 295, calls inlined = 261, statements flattened = 7372 [2022-11-03 02:15:55,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:15:55,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:15:55,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:15:55,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:15:55,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:55" (1/1) ... [2022-11-03 02:15:55,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:55" (1/1) ... [2022-11-03 02:15:55,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:55" (1/1) ... [2022-11-03 02:15:55,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:55" (1/1) ... [2022-11-03 02:15:56,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:55" (1/1) ... [2022-11-03 02:15:56,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:55" (1/1) ... [2022-11-03 02:15:56,353 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:55" (1/1) ... [2022-11-03 02:15:56,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:55" (1/1) ... [2022-11-03 02:15:56,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:15:56,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:15:56,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:15:56,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:15:56,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:55" (1/1) ... [2022-11-03 02:15:56,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:15:56,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:15:56,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:15:56,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f079e8-ec47-4c82-be4b-2eeb557e83b1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:15:56,560 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-03 02:15:56,560 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-03 02:15:56,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:15:56,561 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:15:56,561 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-03 02:15:56,561 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-03 02:15:56,562 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:15:56,562 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:15:56,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:15:56,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:15:56,562 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 02:15:56,563 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 02:15:56,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:15:56,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:15:56,563 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:15:56,563 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:15:56,564 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:15:56,564 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:15:56,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_63 [2022-11-03 02:15:56,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_63 [2022-11-03 02:15:56,565 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_interrupt [2022-11-03 02:15:56,565 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_interrupt [2022-11-03 02:15:56,565 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 02:15:56,566 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 02:15:56,566 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:15:56,566 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:15:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:15:56,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:15:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:15:56,567 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:15:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:15:56,568 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:15:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:15:56,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:15:56,569 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 02:15:56,569 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 02:15:56,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:15:56,570 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_write_bcr [2022-11-03 02:15:56,570 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_write_bcr [2022-11-03 02:15:56,570 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:15:56,571 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:15:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:15:56,572 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:15:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:15:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pcnet32_cleanup_module_16_2 [2022-11-03 02:15:56,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pcnet32_cleanup_module_16_2 [2022-11-03 02:15:56,574 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:15:56,575 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:15:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-03 02:15:56,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-03 02:15:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:15:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:15:56,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:15:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_purge_tx_ring [2022-11-03 02:15:56,577 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_purge_tx_ring [2022-11-03 02:15:56,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:15:56,578 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:15:56,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:15:56,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:15:56,579 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:15:56,579 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_write_bcr [2022-11-03 02:15:56,579 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_write_bcr [2022-11-03 02:15:56,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 02:15:56,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 02:15:56,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:15:56,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:15:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:15:56,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:15:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 02:15:56,582 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 02:15:56,582 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:15:56,582 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:15:56,582 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_netif_start [2022-11-03 02:15:56,582 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_netif_start [2022-11-03 02:15:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2022-11-03 02:15:56,584 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2022-11-03 02:15:56,584 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~~u16~0 [2022-11-03 02:15:56,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~~u16~0 [2022-11-03 02:15:56,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:15:56,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:15:56,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:15:56,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 02:15:56,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 02:15:56,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:15:56,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:15:56,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-11-03 02:15:56,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-11-03 02:15:56,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-03 02:15:56,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-03 02:15:56,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-03 02:15:56,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-03 02:15:56,590 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_open [2022-11-03 02:15:56,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_open [2022-11-03 02:15:56,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:15:56,591 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-03 02:15:56,591 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-03 02:15:56,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:15:56,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:15:56,592 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:15:56,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:15:56,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:15:56,592 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:15:56,593 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:15:56,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:15:56,594 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_reset [2022-11-03 02:15:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_reset [2022-11-03 02:15:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_pcnet32_private [2022-11-03 02:15:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_pcnet32_private [2022-11-03 02:15:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 02:15:56,599 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 02:15:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_restart [2022-11-03 02:15:56,600 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_restart [2022-11-03 02:15:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 02:15:56,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 02:15:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-03 02:15:56,608 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-03 02:15:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:15:56,608 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:15:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 02:15:56,609 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 02:15:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:15:56,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:15:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_read_csr [2022-11-03 02:15:56,609 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_read_csr [2022-11-03 02:15:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-03 02:15:56,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-03 02:15:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:15:56,610 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:15:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_reset [2022-11-03 02:15:56,610 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_reset [2022-11-03 02:15:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-03 02:15:56,611 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-03 02:15:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:15:56,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:15:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:15:56,612 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:15:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:15:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:15:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:15:56,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:15:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_pm_resume [2022-11-03 02:15:56,613 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_pm_resume [2022-11-03 02:15:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:15:56,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:15:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_check_media [2022-11-03 02:15:56,613 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_check_media [2022-11-03 02:15:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_get_regs_len [2022-11-03 02:15:56,614 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_get_regs_len [2022-11-03 02:15:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 02:15:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 02:15:56,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 02:15:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_poll_controller [2022-11-03 02:15:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_poll_controller [2022-11-03 02:15:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_free_ring [2022-11-03 02:15:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_free_ring [2022-11-03 02:15:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 02:15:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 02:15:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:15:56,616 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:15:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-03 02:15:56,617 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-03 02:15:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:15:56,617 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:15:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-03 02:15:56,617 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-03 02:15:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_gset [2022-11-03 02:15:56,618 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_gset [2022-11-03 02:15:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_purge_rx_ring [2022-11-03 02:15:56,618 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_purge_rx_ring [2022-11-03 02:15:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_write_csr [2022-11-03 02:15:56,619 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_write_csr [2022-11-03 02:15:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_tx_timeout [2022-11-03 02:15:56,619 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_tx_timeout [2022-11-03 02:15:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:15:56,620 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:15:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:15:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_netif_stop [2022-11-03 02:15:56,621 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_netif_stop [2022-11-03 02:15:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:15:56,623 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:15:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:15:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_pcnet32_private [2022-11-03 02:15:56,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_pcnet32_private [2022-11-03 02:15:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:15:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_read_csr [2022-11-03 02:15:56,624 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_read_csr [2022-11-03 02:15:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_set_multicast_list [2022-11-03 02:15:56,624 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_set_multicast_list [2022-11-03 02:15:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-03 02:15:56,624 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-03 02:15:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:15:56,625 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:15:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure mii_link_ok [2022-11-03 02:15:56,625 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_link_ok [2022-11-03 02:15:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:15:56,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:15:56,626 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_probe1 [2022-11-03 02:15:56,626 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_probe1 [2022-11-03 02:15:56,626 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-03 02:15:56,626 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-03 02:15:56,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 02:15:56,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 02:15:56,627 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_remove_one [2022-11-03 02:15:56,627 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_remove_one [2022-11-03 02:15:56,627 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_sset [2022-11-03 02:15:56,627 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_sset [2022-11-03 02:15:56,627 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~~u16~0~TO~VOID [2022-11-03 02:15:56,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~~u16~0~TO~VOID [2022-11-03 02:15:56,628 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_read_bcr [2022-11-03 02:15:56,628 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_read_bcr [2022-11-03 02:15:56,628 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-03 02:15:56,628 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-03 02:15:56,629 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:15:56,629 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:15:56,629 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:15:56,629 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:15:56,629 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_read_bcr [2022-11-03 02:15:56,629 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_read_bcr [2022-11-03 02:15:56,630 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:15:56,630 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:15:56,630 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_init_ring [2022-11-03 02:15:56,630 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_init_ring [2022-11-03 02:15:56,630 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_close [2022-11-03 02:15:56,631 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_close [2022-11-03 02:15:56,631 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-03 02:15:56,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-03 02:15:56,631 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:15:56,631 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:15:56,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:15:56,632 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_suspend [2022-11-03 02:15:56,632 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_suspend [2022-11-03 02:15:56,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:15:56,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:15:56,638 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 02:15:56,638 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 02:15:56,638 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-03 02:15:56,639 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-03 02:15:56,639 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_write_csr [2022-11-03 02:15:56,639 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_write_csr [2022-11-03 02:15:56,639 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_load_multicast [2022-11-03 02:15:56,639 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_load_multicast [2022-11-03 02:15:56,641 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-03 02:15:56,642 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-03 02:15:56,642 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_nway_reset [2022-11-03 02:15:56,642 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_nway_reset [2022-11-03 02:15:56,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:15:56,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:15:56,643 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 02:15:56,643 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 02:15:56,643 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:15:56,643 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:15:56,644 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-03 02:15:56,644 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-03 02:15:56,644 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-03 02:15:56,644 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-03 02:15:56,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:15:56,644 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-03 02:15:56,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-11-03 02:15:56,645 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-03 02:15:56,645 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-03 02:15:56,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:15:56,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:15:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-03 02:15:56,646 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-03 02:15:57,916 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:15:57,921 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:15:58,163 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:16:09,069 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:16:09,386 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:16:12,123 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:16:12,123 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-03 02:16:12,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:16:12 BoogieIcfgContainer [2022-11-03 02:16:12,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:16:12,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:16:12,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:16:12,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:16:12,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:15:49" (1/3) ... [2022-11-03 02:16:12,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339ec079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:16:12, skipping insertion in model container [2022-11-03 02:16:12,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:15:55" (2/3) ... [2022-11-03 02:16:12,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339ec079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:16:12, skipping insertion in model container [2022-11-03 02:16:12,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:16:12" (3/3) ... [2022-11-03 02:16:12,148 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2022-11-03 02:16:12,174 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:16:12,174 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 02:16:12,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:16:12,320 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;@406a8c75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:16:12,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:16:12,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 1996 states, 1181 states have (on average 1.3158340389500423) internal successors, (1554), 1223 states have internal predecessors, (1554), 692 states have call successors, (692), 123 states have call predecessors, (692), 122 states have return successors, (684), 671 states have call predecessors, (684), 684 states have call successors, (684) [2022-11-03 02:16:12,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-03 02:16:12,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:12,369 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:12,369 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)] === [2022-11-03 02:16:12,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:12,381 INFO L85 PathProgramCache]: Analyzing trace with hash 508439112, now seen corresponding path program 1 times [2022-11-03 02:16:12,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:12,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717410942] [2022-11-03 02:16:12,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:12,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 02:16:13,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:13,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717410942] [2022-11-03 02:16:13,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717410942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:13,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:13,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:13,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332435837] [2022-11-03 02:16:13,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:13,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:13,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:13,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:13,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:13,394 INFO L87 Difference]: Start difference. First operand has 1996 states, 1181 states have (on average 1.3158340389500423) internal successors, (1554), 1223 states have internal predecessors, (1554), 692 states have call successors, (692), 123 states have call predecessors, (692), 122 states have return successors, (684), 671 states have call predecessors, (684), 684 states have call successors, (684) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 02:16:18,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:18,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:18,691 INFO L93 Difference]: Finished difference Result 5715 states and 8555 transitions. [2022-11-03 02:16:18,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:18,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2022-11-03 02:16:18,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:18,769 INFO L225 Difference]: With dead ends: 5715 [2022-11-03 02:16:18,769 INFO L226 Difference]: Without dead ends: 3734 [2022-11-03 02:16:18,800 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 [2022-11-03 02:16:18,804 INFO L413 NwaCegarLoop]: 3116 mSDtfsCounter, 2617 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2619 SdHoareTripleChecker+Valid, 5557 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:18,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2619 Valid, 5557 Invalid, 836 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 828 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 02:16:18,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2022-11-03 02:16:19,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 3730. [2022-11-03 02:16:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 2220 states have (on average 1.3117117117117116) internal successors, (2912), 2295 states have internal predecessors, (2912), 1269 states have call successors, (1269), 239 states have call predecessors, (1269), 238 states have return successors, (1267), 1241 states have call predecessors, (1267), 1265 states have call successors, (1267) [2022-11-03 02:16:19,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 5448 transitions. [2022-11-03 02:16:19,360 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 5448 transitions. Word has length 151 [2022-11-03 02:16:19,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:19,367 INFO L495 AbstractCegarLoop]: Abstraction has 3730 states and 5448 transitions. [2022-11-03 02:16:19,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 02:16:19,368 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 5448 transitions. [2022-11-03 02:16:19,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-03 02:16:19,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:19,380 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:19,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:16:19,381 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)] === [2022-11-03 02:16:19,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:19,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1719991937, now seen corresponding path program 1 times [2022-11-03 02:16:19,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:19,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051761885] [2022-11-03 02:16:19,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:19,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 02:16:19,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:19,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051761885] [2022-11-03 02:16:19,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051761885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:19,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:19,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:19,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361408139] [2022-11-03 02:16:19,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:19,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:19,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:19,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:19,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:19,808 INFO L87 Difference]: Start difference. First operand 3730 states and 5448 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 02:16:22,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:24,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:24,787 INFO L93 Difference]: Finished difference Result 10027 states and 14534 transitions. [2022-11-03 02:16:24,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:24,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 153 [2022-11-03 02:16:24,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:24,840 INFO L225 Difference]: With dead ends: 10027 [2022-11-03 02:16:24,840 INFO L226 Difference]: Without dead ends: 6324 [2022-11-03 02:16:24,865 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 [2022-11-03 02:16:24,866 INFO L413 NwaCegarLoop]: 2967 mSDtfsCounter, 1937 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1937 SdHoareTripleChecker+Valid, 5374 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:24,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1937 Valid, 5374 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 863 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-03 02:16:24,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6324 states. [2022-11-03 02:16:25,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6324 to 6296. [2022-11-03 02:16:25,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6296 states, 3737 states have (on average 1.302113995183302) internal successors, (4866), 3860 states have internal predecessors, (4866), 2102 states have call successors, (2102), 457 states have call predecessors, (2102), 454 states have return successors, (2111), 2045 states have call predecessors, (2111), 2098 states have call successors, (2111) [2022-11-03 02:16:25,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6296 states to 6296 states and 9079 transitions. [2022-11-03 02:16:25,429 INFO L78 Accepts]: Start accepts. Automaton has 6296 states and 9079 transitions. Word has length 153 [2022-11-03 02:16:25,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:25,431 INFO L495 AbstractCegarLoop]: Abstraction has 6296 states and 9079 transitions. [2022-11-03 02:16:25,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 02:16:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand 6296 states and 9079 transitions. [2022-11-03 02:16:25,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-03 02:16:25,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:25,437 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:25,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:16:25,438 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)] === [2022-11-03 02:16:25,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:25,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1116395931, now seen corresponding path program 1 times [2022-11-03 02:16:25,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:25,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191401807] [2022-11-03 02:16:25,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:25,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:25,845 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 02:16:25,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:25,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191401807] [2022-11-03 02:16:25,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191401807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:25,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:25,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:25,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550181700] [2022-11-03 02:16:25,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:25,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:25,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:25,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:25,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:25,848 INFO L87 Difference]: Start difference. First operand 6296 states and 9079 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 02:16:29,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:31,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:31,626 INFO L93 Difference]: Finished difference Result 18568 states and 26830 transitions. [2022-11-03 02:16:31,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:31,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 155 [2022-11-03 02:16:31,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:31,727 INFO L225 Difference]: With dead ends: 18568 [2022-11-03 02:16:31,727 INFO L226 Difference]: Without dead ends: 12299 [2022-11-03 02:16:31,769 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 [2022-11-03 02:16:31,774 INFO L413 NwaCegarLoop]: 3736 mSDtfsCounter, 2744 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2744 SdHoareTripleChecker+Valid, 6160 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:31,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2744 Valid, 6160 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 952 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-03 02:16:31,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12299 states. [2022-11-03 02:16:32,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12299 to 12265. [2022-11-03 02:16:32,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12265 states, 7307 states have (on average 1.3046393868892843) internal successors, (9533), 7564 states have internal predecessors, (9533), 4064 states have call successors, (4064), 906 states have call predecessors, (4064), 891 states have return successors, (4139), 3924 states have call predecessors, (4139), 4060 states have call successors, (4139) [2022-11-03 02:16:32,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12265 states to 12265 states and 17736 transitions. [2022-11-03 02:16:32,834 INFO L78 Accepts]: Start accepts. Automaton has 12265 states and 17736 transitions. Word has length 155 [2022-11-03 02:16:32,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:32,835 INFO L495 AbstractCegarLoop]: Abstraction has 12265 states and 17736 transitions. [2022-11-03 02:16:32,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 02:16:32,836 INFO L276 IsEmpty]: Start isEmpty. Operand 12265 states and 17736 transitions. [2022-11-03 02:16:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-03 02:16:32,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:32,839 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:32,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:16:32,839 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)] === [2022-11-03 02:16:32,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:32,840 INFO L85 PathProgramCache]: Analyzing trace with hash 359729318, now seen corresponding path program 1 times [2022-11-03 02:16:32,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:32,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068514263] [2022-11-03 02:16:32,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:32,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:33,258 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 02:16:33,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:33,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068514263] [2022-11-03 02:16:33,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068514263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:33,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:33,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:16:33,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183242077] [2022-11-03 02:16:33,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:33,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:33,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:33,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:33,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:16:33,261 INFO L87 Difference]: Start difference. First operand 12265 states and 17736 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 02:16:36,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:38,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:38,706 INFO L93 Difference]: Finished difference Result 24448 states and 35141 transitions. [2022-11-03 02:16:38,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:38,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 156 [2022-11-03 02:16:38,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:38,817 INFO L225 Difference]: With dead ends: 24448 [2022-11-03 02:16:38,817 INFO L226 Difference]: Without dead ends: 12210 [2022-11-03 02:16:38,894 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 [2022-11-03 02:16:38,900 INFO L413 NwaCegarLoop]: 3911 mSDtfsCounter, 2129 mSDsluCounter, 2838 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 6357 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:38,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 6357 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1089 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 02:16:38,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12210 states. [2022-11-03 02:16:39,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12210 to 12176. [2022-11-03 02:16:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12176 states, 7205 states have (on average 1.303678001387925) internal successors, (9393), 7470 states have internal predecessors, (9393), 3932 states have call successors, (3932), 1051 states have call predecessors, (3932), 1036 states have return successors, (4002), 3769 states have call predecessors, (4002), 3928 states have call successors, (4002) [2022-11-03 02:16:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12176 states to 12176 states and 17327 transitions. [2022-11-03 02:16:39,925 INFO L78 Accepts]: Start accepts. Automaton has 12176 states and 17327 transitions. Word has length 156 [2022-11-03 02:16:39,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:39,926 INFO L495 AbstractCegarLoop]: Abstraction has 12176 states and 17327 transitions. [2022-11-03 02:16:39,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 02:16:39,928 INFO L276 IsEmpty]: Start isEmpty. Operand 12176 states and 17327 transitions. [2022-11-03 02:16:39,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-03 02:16:39,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:39,935 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:39,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:16:39,936 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)] === [2022-11-03 02:16:39,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:39,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1449197250, now seen corresponding path program 1 times [2022-11-03 02:16:39,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:39,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612436833] [2022-11-03 02:16:39,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:39,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:40,727 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-03 02:16:40,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:40,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612436833] [2022-11-03 02:16:40,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612436833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:40,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:40,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:16:40,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806859512] [2022-11-03 02:16:40,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:40,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:16:40,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:40,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:16:40,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:16:40,731 INFO L87 Difference]: Start difference. First operand 12176 states and 17327 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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) [2022-11-03 02:16:43,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:46,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:46,253 INFO L93 Difference]: Finished difference Result 12908 states and 18218 transitions. [2022-11-03 02:16:46,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:16:46,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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 195 [2022-11-03 02:16:46,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:46,326 INFO L225 Difference]: With dead ends: 12908 [2022-11-03 02:16:46,326 INFO L226 Difference]: Without dead ends: 12906 [2022-11-03 02:16:46,334 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 [2022-11-03 02:16:46,335 INFO L413 NwaCegarLoop]: 2678 mSDtfsCounter, 2676 mSDsluCounter, 7021 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 8757 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:46,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2690 Valid, 8757 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1376 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 02:16:46,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12906 states. [2022-11-03 02:16:47,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12906 to 12902. [2022-11-03 02:16:47,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12902 states, 7605 states have (on average 1.2973044049967126) internal successors, (9866), 7892 states have internal predecessors, (9866), 4138 states have call successors, (4138), 1168 states have call predecessors, (4138), 1156 states have return successors, (4210), 3967 states have call predecessors, (4210), 4134 states have call successors, (4210) [2022-11-03 02:16:47,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12902 states to 12902 states and 18214 transitions. [2022-11-03 02:16:47,248 INFO L78 Accepts]: Start accepts. Automaton has 12902 states and 18214 transitions. Word has length 195 [2022-11-03 02:16:47,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:47,249 INFO L495 AbstractCegarLoop]: Abstraction has 12902 states and 18214 transitions. [2022-11-03 02:16:47,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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) [2022-11-03 02:16:47,250 INFO L276 IsEmpty]: Start isEmpty. Operand 12902 states and 18214 transitions. [2022-11-03 02:16:47,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-03 02:16:47,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:47,256 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:47,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:16:47,256 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)] === [2022-11-03 02:16:47,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:47,257 INFO L85 PathProgramCache]: Analyzing trace with hash -786789772, now seen corresponding path program 1 times [2022-11-03 02:16:47,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:47,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586010791] [2022-11-03 02:16:47,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:47,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:48,055 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2022-11-03 02:16:48,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:48,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586010791] [2022-11-03 02:16:48,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586010791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:48,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:48,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:16:48,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410577706] [2022-11-03 02:16:48,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:48,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:16:48,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:48,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:16:48,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:16:48,059 INFO L87 Difference]: Start difference. First operand 12902 states and 18214 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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) [2022-11-03 02:16:51,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:53,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:53,796 INFO L93 Difference]: Finished difference Result 12930 states and 18233 transitions. [2022-11-03 02:16:53,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:16:53,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 201 [2022-11-03 02:16:53,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:53,867 INFO L225 Difference]: With dead ends: 12930 [2022-11-03 02:16:53,867 INFO L226 Difference]: Without dead ends: 12928 [2022-11-03 02:16:53,877 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 [2022-11-03 02:16:53,877 INFO L413 NwaCegarLoop]: 2677 mSDtfsCounter, 2682 mSDsluCounter, 6985 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2695 SdHoareTripleChecker+Valid, 8723 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:53,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2695 Valid, 8723 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1372 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-03 02:16:53,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12928 states. [2022-11-03 02:16:54,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12928 to 12924. [2022-11-03 02:16:54,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12924 states, 7619 states have (on average 1.2968893555584722) internal successors, (9881), 7906 states have internal predecessors, (9881), 4138 states have call successors, (4138), 1176 states have call predecessors, (4138), 1164 states have return successors, (4210), 3967 states have call predecessors, (4210), 4134 states have call successors, (4210) [2022-11-03 02:16:54,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12924 states to 12924 states and 18229 transitions. [2022-11-03 02:16:54,848 INFO L78 Accepts]: Start accepts. Automaton has 12924 states and 18229 transitions. Word has length 201 [2022-11-03 02:16:54,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:54,849 INFO L495 AbstractCegarLoop]: Abstraction has 12924 states and 18229 transitions. [2022-11-03 02:16:54,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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) [2022-11-03 02:16:54,850 INFO L276 IsEmpty]: Start isEmpty. Operand 12924 states and 18229 transitions. [2022-11-03 02:16:54,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-03 02:16:54,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:54,855 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:16:54,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:16:54,856 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)] === [2022-11-03 02:16:54,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash 897615034, now seen corresponding path program 1 times [2022-11-03 02:16:54,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:54,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081277475] [2022-11-03 02:16:54,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:54,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-03 02:16:55,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:55,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081277475] [2022-11-03 02:16:55,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081277475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:55,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:55,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:16:55,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748645121] [2022-11-03 02:16:55,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:55,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:16:55,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:55,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:16:55,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:16:55,419 INFO L87 Difference]: Start difference. First operand 12924 states and 18229 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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) [2022-11-03 02:16:58,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:00,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:00,261 INFO L93 Difference]: Finished difference Result 12934 states and 18236 transitions. [2022-11-03 02:17:00,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:17:00,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 207 [2022-11-03 02:17:00,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:00,335 INFO L225 Difference]: With dead ends: 12934 [2022-11-03 02:17:00,335 INFO L226 Difference]: Without dead ends: 12932 [2022-11-03 02:17:00,345 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 [2022-11-03 02:17:00,346 INFO L413 NwaCegarLoop]: 2677 mSDtfsCounter, 2682 mSDsluCounter, 6985 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 8723 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:00,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2694 Valid, 8723 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1372 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 02:17:00,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12932 states. [2022-11-03 02:17:01,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12932 to 12928. [2022-11-03 02:17:01,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12928 states, 7622 states have (on average 1.2967725006559958) internal successors, (9884), 7909 states have internal predecessors, (9884), 4138 states have call successors, (4138), 1177 states have call predecessors, (4138), 1165 states have return successors, (4210), 3967 states have call predecessors, (4210), 4134 states have call successors, (4210) [2022-11-03 02:17:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12928 states to 12928 states and 18232 transitions. [2022-11-03 02:17:01,450 INFO L78 Accepts]: Start accepts. Automaton has 12928 states and 18232 transitions. Word has length 207 [2022-11-03 02:17:01,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:01,451 INFO L495 AbstractCegarLoop]: Abstraction has 12928 states and 18232 transitions. [2022-11-03 02:17:01,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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) [2022-11-03 02:17:01,451 INFO L276 IsEmpty]: Start isEmpty. Operand 12928 states and 18232 transitions. [2022-11-03 02:17:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-03 02:17:01,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:01,458 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 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] [2022-11-03 02:17:01,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:17:01,459 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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)] === [2022-11-03 02:17:01,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:01,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1947622207, now seen corresponding path program 1 times [2022-11-03 02:17:01,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:01,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876201690] [2022-11-03 02:17:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:01,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:01,797 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2022-11-03 02:17:01,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:01,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876201690] [2022-11-03 02:17:01,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876201690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:01,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:01,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:17:01,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702369192] [2022-11-03 02:17:01,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:01,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:17:01,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:01,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:17:01,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:17:01,801 INFO L87 Difference]: Start difference. First operand 12928 states and 18232 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-03 02:17:04,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:06,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:06,703 INFO L93 Difference]: Finished difference Result 30353 states and 42788 transitions. [2022-11-03 02:17:06,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:17:06,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 205 [2022-11-03 02:17:06,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:06,786 INFO L225 Difference]: With dead ends: 30353 [2022-11-03 02:17:06,787 INFO L226 Difference]: Without dead ends: 17655 [2022-11-03 02:17:06,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:17:06,839 INFO L413 NwaCegarLoop]: 3675 mSDtfsCounter, 2126 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2127 SdHoareTripleChecker+Valid, 6115 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:06,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2127 Valid, 6115 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1032 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-11-03 02:17:06,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17655 states. [2022-11-03 02:17:07,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17655 to 17609. [2022-11-03 02:17:07,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17609 states, 10381 states have (on average 1.298429823716405) internal successors, (13479), 10782 states have internal predecessors, (13479), 5606 states have call successors, (5606), 1638 states have call predecessors, (5606), 1619 states have return successors, (5706), 5365 states have call predecessors, (5706), 5602 states have call successors, (5706) [2022-11-03 02:17:08,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17609 states to 17609 states and 24791 transitions. [2022-11-03 02:17:08,066 INFO L78 Accepts]: Start accepts. Automaton has 17609 states and 24791 transitions. Word has length 205 [2022-11-03 02:17:08,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:08,066 INFO L495 AbstractCegarLoop]: Abstraction has 17609 states and 24791 transitions. [2022-11-03 02:17:08,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-03 02:17:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 17609 states and 24791 transitions. [2022-11-03 02:17:08,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-03 02:17:08,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:08,073 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 3, 3, 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] [2022-11-03 02:17:08,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:17:08,073 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)] === [2022-11-03 02:17:08,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:08,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1465462489, now seen corresponding path program 1 times [2022-11-03 02:17:08,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:08,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197945272] [2022-11-03 02:17:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:08,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 779 trivial. 0 not checked. [2022-11-03 02:17:08,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:08,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197945272] [2022-11-03 02:17:08,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197945272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:08,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:08,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:17:08,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879179534] [2022-11-03 02:17:08,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:08,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:17:08,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:08,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:17:08,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:17:08,591 INFO L87 Difference]: Start difference. First operand 17609 states and 24791 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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) [2022-11-03 02:17:11,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:14,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:14,676 INFO L93 Difference]: Finished difference Result 17619 states and 24798 transitions. [2022-11-03 02:17:14,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:17:14,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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 210 [2022-11-03 02:17:14,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:14,769 INFO L225 Difference]: With dead ends: 17619 [2022-11-03 02:17:14,769 INFO L226 Difference]: Without dead ends: 17617 [2022-11-03 02:17:14,784 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 [2022-11-03 02:17:14,785 INFO L413 NwaCegarLoop]: 2677 mSDtfsCounter, 2683 mSDsluCounter, 6987 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 8723 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:14,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2694 Valid, 8723 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1375 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-11-03 02:17:14,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17617 states. [2022-11-03 02:17:15,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17617 to 17613. [2022-11-03 02:17:15,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17613 states, 10384 states have (on average 1.2983436055469955) internal successors, (13482), 10785 states have internal predecessors, (13482), 5606 states have call successors, (5606), 1639 states have call predecessors, (5606), 1620 states have return successors, (5706), 5365 states have call predecessors, (5706), 5602 states have call successors, (5706) [2022-11-03 02:17:15,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17613 states to 17613 states and 24794 transitions. [2022-11-03 02:17:15,954 INFO L78 Accepts]: Start accepts. Automaton has 17613 states and 24794 transitions. Word has length 210 [2022-11-03 02:17:15,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:15,955 INFO L495 AbstractCegarLoop]: Abstraction has 17613 states and 24794 transitions. [2022-11-03 02:17:15,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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) [2022-11-03 02:17:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 17613 states and 24794 transitions. [2022-11-03 02:17:15,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-03 02:17:15,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:15,963 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:15,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:17:15,963 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)] === [2022-11-03 02:17:15,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:15,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1761096945, now seen corresponding path program 1 times [2022-11-03 02:17:15,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:15,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997281832] [2022-11-03 02:17:15,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:15,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2022-11-03 02:17:16,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:16,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997281832] [2022-11-03 02:17:16,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997281832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:16,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:16,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:17:16,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789430588] [2022-11-03 02:17:16,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:16,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:17:16,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:16,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:17:16,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:17:16,711 INFO L87 Difference]: Start difference. First operand 17613 states and 24794 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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) [2022-11-03 02:17:19,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:21,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:21,877 INFO L93 Difference]: Finished difference Result 17623 states and 24801 transitions. [2022-11-03 02:17:21,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:17:21,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 216 [2022-11-03 02:17:21,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:21,963 INFO L225 Difference]: With dead ends: 17623 [2022-11-03 02:17:21,964 INFO L226 Difference]: Without dead ends: 17621 [2022-11-03 02:17:21,977 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 [2022-11-03 02:17:21,978 INFO L413 NwaCegarLoop]: 2677 mSDtfsCounter, 2682 mSDsluCounter, 6985 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2692 SdHoareTripleChecker+Valid, 8723 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:21,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2692 Valid, 8723 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1372 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 02:17:21,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17621 states. [2022-11-03 02:17:22,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17621 to 17617. [2022-11-03 02:17:22,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17617 states, 10387 states have (on average 1.2982574371810918) internal successors, (13485), 10788 states have internal predecessors, (13485), 5606 states have call successors, (5606), 1640 states have call predecessors, (5606), 1621 states have return successors, (5706), 5365 states have call predecessors, (5706), 5602 states have call successors, (5706) [2022-11-03 02:17:23,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17617 states to 17617 states and 24797 transitions. [2022-11-03 02:17:23,012 INFO L78 Accepts]: Start accepts. Automaton has 17617 states and 24797 transitions. Word has length 216 [2022-11-03 02:17:23,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:23,013 INFO L495 AbstractCegarLoop]: Abstraction has 17617 states and 24797 transitions. [2022-11-03 02:17:23,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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) [2022-11-03 02:17:23,013 INFO L276 IsEmpty]: Start isEmpty. Operand 17617 states and 24797 transitions. [2022-11-03 02:17:23,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-03 02:17:23,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:23,021 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:23,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:17:23,021 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)] === [2022-11-03 02:17:23,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:23,022 INFO L85 PathProgramCache]: Analyzing trace with hash 219649588, now seen corresponding path program 1 times [2022-11-03 02:17:23,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:23,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828328291] [2022-11-03 02:17:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:23,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:23,573 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2022-11-03 02:17:23,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:23,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828328291] [2022-11-03 02:17:23,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828328291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:23,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:23,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:17:23,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197938036] [2022-11-03 02:17:23,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:23,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:17:23,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:23,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:17:23,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:17:23,576 INFO L87 Difference]: Start difference. First operand 17617 states and 24797 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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) [2022-11-03 02:17:26,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:28,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:28,796 INFO L93 Difference]: Finished difference Result 17627 states and 24804 transitions. [2022-11-03 02:17:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:17:28,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 221 [2022-11-03 02:17:28,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:28,873 INFO L225 Difference]: With dead ends: 17627 [2022-11-03 02:17:28,874 INFO L226 Difference]: Without dead ends: 17625 [2022-11-03 02:17:28,887 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 [2022-11-03 02:17:28,888 INFO L413 NwaCegarLoop]: 2677 mSDtfsCounter, 2682 mSDsluCounter, 6987 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2691 SdHoareTripleChecker+Valid, 8723 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:28,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2691 Valid, 8723 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1375 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 02:17:28,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17625 states. [2022-11-03 02:17:29,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17625 to 17621. [2022-11-03 02:17:29,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17621 states, 10390 states have (on average 1.2981713185755535) internal successors, (13488), 10791 states have internal predecessors, (13488), 5606 states have call successors, (5606), 1641 states have call predecessors, (5606), 1622 states have return successors, (5706), 5365 states have call predecessors, (5706), 5602 states have call successors, (5706) [2022-11-03 02:17:30,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17621 states to 17621 states and 24800 transitions. [2022-11-03 02:17:30,027 INFO L78 Accepts]: Start accepts. Automaton has 17621 states and 24800 transitions. Word has length 221 [2022-11-03 02:17:30,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:30,028 INFO L495 AbstractCegarLoop]: Abstraction has 17621 states and 24800 transitions. [2022-11-03 02:17:30,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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) [2022-11-03 02:17:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 17621 states and 24800 transitions. [2022-11-03 02:17:30,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-03 02:17:30,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:30,036 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:30,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:17:30,036 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)] === [2022-11-03 02:17:30,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:30,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1259613858, now seen corresponding path program 1 times [2022-11-03 02:17:30,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:30,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195895811] [2022-11-03 02:17:30,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:30,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 827 trivial. 0 not checked. [2022-11-03 02:17:30,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:30,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195895811] [2022-11-03 02:17:30,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195895811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:30,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:30,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:17:30,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726791155] [2022-11-03 02:17:30,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:30,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:17:30,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:30,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:17:30,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:17:30,540 INFO L87 Difference]: Start difference. First operand 17621 states and 24800 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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) [2022-11-03 02:17:33,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:36,122 INFO L93 Difference]: Finished difference Result 17631 states and 24807 transitions. [2022-11-03 02:17:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:17:36,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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 225 [2022-11-03 02:17:36,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:36,185 INFO L225 Difference]: With dead ends: 17631 [2022-11-03 02:17:36,185 INFO L226 Difference]: Without dead ends: 17629 [2022-11-03 02:17:36,193 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 [2022-11-03 02:17:36,194 INFO L413 NwaCegarLoop]: 2677 mSDtfsCounter, 2683 mSDsluCounter, 6987 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2691 SdHoareTripleChecker+Valid, 8723 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:36,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2691 Valid, 8723 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1375 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-11-03 02:17:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17629 states. [2022-11-03 02:17:37,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17629 to 17625. [2022-11-03 02:17:37,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17625 states, 10393 states have (on average 1.2980852496872894) internal successors, (13491), 10794 states have internal predecessors, (13491), 5606 states have call successors, (5606), 1642 states have call predecessors, (5606), 1623 states have return successors, (5706), 5365 states have call predecessors, (5706), 5602 states have call successors, (5706) [2022-11-03 02:17:37,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17625 states to 17625 states and 24803 transitions. [2022-11-03 02:17:37,540 INFO L78 Accepts]: Start accepts. Automaton has 17625 states and 24803 transitions. Word has length 225 [2022-11-03 02:17:37,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:37,541 INFO L495 AbstractCegarLoop]: Abstraction has 17625 states and 24803 transitions. [2022-11-03 02:17:37,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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) [2022-11-03 02:17:37,541 INFO L276 IsEmpty]: Start isEmpty. Operand 17625 states and 24803 transitions. [2022-11-03 02:17:37,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-03 02:17:37,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:37,547 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:37,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:17:37,548 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:17:37,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:37,549 INFO L85 PathProgramCache]: Analyzing trace with hash 792716647, now seen corresponding path program 1 times [2022-11-03 02:17:37,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:37,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528786654] [2022-11-03 02:17:37,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:37,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-11-03 02:17:38,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:38,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528786654] [2022-11-03 02:17:38,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528786654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:38,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:38,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:17:38,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057802752] [2022-11-03 02:17:38,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:38,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:17:38,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:38,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:17:38,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:17:38,120 INFO L87 Difference]: Start difference. First operand 17625 states and 24803 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:17:41,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:44,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:44,680 INFO L93 Difference]: Finished difference Result 28529 states and 40166 transitions. [2022-11-03 02:17:44,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:17:44,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 230 [2022-11-03 02:17:44,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:44,767 INFO L225 Difference]: With dead ends: 28529 [2022-11-03 02:17:44,768 INFO L226 Difference]: Without dead ends: 28527 [2022-11-03 02:17:44,777 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 [2022-11-03 02:17:44,778 INFO L413 NwaCegarLoop]: 3079 mSDtfsCounter, 1660 mSDsluCounter, 9846 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 11560 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:44,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 11560 Invalid, 1882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1878 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 02:17:44,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28527 states. [2022-11-03 02:17:46,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28527 to 28509. [2022-11-03 02:17:46,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28509 states, 16834 states have (on average 1.3101461328264228) internal successors, (22055), 17591 states have internal predecessors, (22055), 8906 states have call successors, (8906), 2854 states have call predecessors, (8906), 2766 states have return successors, (9188), 8306 states have call predecessors, (9188), 8898 states have call successors, (9188) [2022-11-03 02:17:46,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28509 states to 28509 states and 40149 transitions. [2022-11-03 02:17:46,667 INFO L78 Accepts]: Start accepts. Automaton has 28509 states and 40149 transitions. Word has length 230 [2022-11-03 02:17:46,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:46,667 INFO L495 AbstractCegarLoop]: Abstraction has 28509 states and 40149 transitions. [2022-11-03 02:17:46,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:17:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 28509 states and 40149 transitions. [2022-11-03 02:17:46,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-03 02:17:46,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:46,674 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 9, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:46,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:17:46,675 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)] === [2022-11-03 02:17:46,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:46,675 INFO L85 PathProgramCache]: Analyzing trace with hash 970000062, now seen corresponding path program 1 times [2022-11-03 02:17:46,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:46,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384016937] [2022-11-03 02:17:46,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:46,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:47,173 INFO L134 CoverageAnalysis]: Checked inductivity of 895 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2022-11-03 02:17:47,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:47,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384016937] [2022-11-03 02:17:47,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384016937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:47,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:47,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:17:47,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211474731] [2022-11-03 02:17:47,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:47,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:17:47,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:47,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:17:47,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:17:47,176 INFO L87 Difference]: Start difference. First operand 28509 states and 40149 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:17:50,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:53,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:53,977 INFO L93 Difference]: Finished difference Result 28523 states and 40160 transitions. [2022-11-03 02:17:53,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:17:53,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 235 [2022-11-03 02:17:53,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:54,077 INFO L225 Difference]: With dead ends: 28523 [2022-11-03 02:17:54,077 INFO L226 Difference]: Without dead ends: 28521 [2022-11-03 02:17:54,094 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 [2022-11-03 02:17:54,095 INFO L413 NwaCegarLoop]: 2677 mSDtfsCounter, 2683 mSDsluCounter, 6985 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2689 SdHoareTripleChecker+Valid, 8723 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:54,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2689 Valid, 8723 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1372 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 02:17:54,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28521 states. [2022-11-03 02:17:56,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28521 to 28517. [2022-11-03 02:17:56,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28517 states, 16840 states have (on average 1.3100356294536817) internal successors, (22061), 17597 states have internal predecessors, (22061), 8906 states have call successors, (8906), 2856 states have call predecessors, (8906), 2768 states have return successors, (9188), 8306 states have call predecessors, (9188), 8898 states have call successors, (9188) [2022-11-03 02:17:56,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28517 states to 28517 states and 40155 transitions. [2022-11-03 02:17:56,729 INFO L78 Accepts]: Start accepts. Automaton has 28517 states and 40155 transitions. Word has length 235 [2022-11-03 02:17:56,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:56,730 INFO L495 AbstractCegarLoop]: Abstraction has 28517 states and 40155 transitions. [2022-11-03 02:17:56,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:17:56,730 INFO L276 IsEmpty]: Start isEmpty. Operand 28517 states and 40155 transitions. [2022-11-03 02:17:56,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-03 02:17:56,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:56,738 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 10, 9, 9, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:56,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:17:56,738 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)] === [2022-11-03 02:17:56,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:56,739 INFO L85 PathProgramCache]: Analyzing trace with hash 988283380, now seen corresponding path program 1 times [2022-11-03 02:17:56,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:56,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536301288] [2022-11-03 02:17:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:56,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:57,253 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2022-11-03 02:17:57,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:57,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536301288] [2022-11-03 02:17:57,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536301288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:57,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:57,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:17:57,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43115857] [2022-11-03 02:17:57,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:57,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:17:57,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:57,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:17:57,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:17:57,256 INFO L87 Difference]: Start difference. First operand 28517 states and 40155 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 02:18:00,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:03,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:03,860 INFO L93 Difference]: Finished difference Result 28531 states and 40166 transitions. [2022-11-03 02:18:03,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:18:03,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 241 [2022-11-03 02:18:03,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:03,940 INFO L225 Difference]: With dead ends: 28531 [2022-11-03 02:18:03,941 INFO L226 Difference]: Without dead ends: 28529 [2022-11-03 02:18:03,950 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 [2022-11-03 02:18:03,951 INFO L413 NwaCegarLoop]: 2677 mSDtfsCounter, 2682 mSDsluCounter, 6985 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 8723 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:03,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2687 Valid, 8723 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1372 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-03 02:18:03,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28529 states. [2022-11-03 02:18:06,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28529 to 28525. [2022-11-03 02:18:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28525 states, 16846 states have (on average 1.3099252047963907) internal successors, (22067), 17603 states have internal predecessors, (22067), 8906 states have call successors, (8906), 2858 states have call predecessors, (8906), 2770 states have return successors, (9188), 8306 states have call predecessors, (9188), 8898 states have call successors, (9188) [2022-11-03 02:18:06,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28525 states to 28525 states and 40161 transitions. [2022-11-03 02:18:06,161 INFO L78 Accepts]: Start accepts. Automaton has 28525 states and 40161 transitions. Word has length 241 [2022-11-03 02:18:06,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:06,162 INFO L495 AbstractCegarLoop]: Abstraction has 28525 states and 40161 transitions. [2022-11-03 02:18:06,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 02:18:06,162 INFO L276 IsEmpty]: Start isEmpty. Operand 28525 states and 40161 transitions. [2022-11-03 02:18:06,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-03 02:18:06,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:06,167 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 11, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:06,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:18:06,168 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)] === [2022-11-03 02:18:06,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:06,168 INFO L85 PathProgramCache]: Analyzing trace with hash -173231074, now seen corresponding path program 1 times [2022-11-03 02:18:06,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:06,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941175666] [2022-11-03 02:18:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:06,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:06,761 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 947 trivial. 0 not checked. [2022-11-03 02:18:06,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:06,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941175666] [2022-11-03 02:18:06,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941175666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:06,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:06,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:18:06,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198121711] [2022-11-03 02:18:06,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:06,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:18:06,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:06,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:18:06,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:06,767 INFO L87 Difference]: Start difference. First operand 28525 states and 40161 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 02:18:10,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:14,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:14,919 INFO L93 Difference]: Finished difference Result 28539 states and 40172 transitions. [2022-11-03 02:18:14,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:18:14,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 245 [2022-11-03 02:18:14,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:15,025 INFO L225 Difference]: With dead ends: 28539 [2022-11-03 02:18:15,025 INFO L226 Difference]: Without dead ends: 28537 [2022-11-03 02:18:15,035 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 [2022-11-03 02:18:15,040 INFO L413 NwaCegarLoop]: 2677 mSDtfsCounter, 2683 mSDsluCounter, 6985 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 8723 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:15,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2687 Valid, 8723 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1372 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-11-03 02:18:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28537 states. [2022-11-03 02:18:17,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28537 to 28533. [2022-11-03 02:18:17,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28533 states, 16852 states have (on average 1.3098148587704723) internal successors, (22073), 17609 states have internal predecessors, (22073), 8906 states have call successors, (8906), 2860 states have call predecessors, (8906), 2772 states have return successors, (9188), 8306 states have call predecessors, (9188), 8898 states have call successors, (9188) [2022-11-03 02:18:17,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28533 states to 28533 states and 40167 transitions. [2022-11-03 02:18:17,725 INFO L78 Accepts]: Start accepts. Automaton has 28533 states and 40167 transitions. Word has length 245 [2022-11-03 02:18:17,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:17,726 INFO L495 AbstractCegarLoop]: Abstraction has 28533 states and 40167 transitions. [2022-11-03 02:18:17,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 02:18:17,726 INFO L276 IsEmpty]: Start isEmpty. Operand 28533 states and 40167 transitions. [2022-11-03 02:18:17,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-03 02:18:17,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:17,734 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 12, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:17,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 02:18:17,734 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)] === [2022-11-03 02:18:17,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:17,735 INFO L85 PathProgramCache]: Analyzing trace with hash -313351925, now seen corresponding path program 1 times [2022-11-03 02:18:17,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:17,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817829587] [2022-11-03 02:18:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:17,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:18,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 983 trivial. 0 not checked. [2022-11-03 02:18:18,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:18,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817829587] [2022-11-03 02:18:18,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817829587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:18,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:18,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:18:18,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857834081] [2022-11-03 02:18:18,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:18,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:18:18,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:18,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:18:18,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:18,318 INFO L87 Difference]: Start difference. First operand 28533 states and 40167 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 02:18:21,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:26,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:26,143 INFO L93 Difference]: Finished difference Result 28547 states and 40178 transitions. [2022-11-03 02:18:26,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:18:26,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 252 [2022-11-03 02:18:26,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:26,225 INFO L225 Difference]: With dead ends: 28547 [2022-11-03 02:18:26,226 INFO L226 Difference]: Without dead ends: 28543 [2022-11-03 02:18:26,235 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 [2022-11-03 02:18:26,236 INFO L413 NwaCegarLoop]: 2677 mSDtfsCounter, 2682 mSDsluCounter, 6985 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2685 SdHoareTripleChecker+Valid, 8723 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:26,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2685 Valid, 8723 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1372 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-03 02:18:26,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28543 states. [2022-11-03 02:18:28,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28543 to 28539. [2022-11-03 02:18:28,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28539 states, 16857 states have (on average 1.3096636412172984) internal successors, (22077), 17613 states have internal predecessors, (22077), 8906 states have call successors, (8906), 2862 states have call predecessors, (8906), 2773 states have return successors, (9188), 8306 states have call predecessors, (9188), 8898 states have call successors, (9188) [2022-11-03 02:18:29,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28539 states to 28539 states and 40171 transitions. [2022-11-03 02:18:29,118 INFO L78 Accepts]: Start accepts. Automaton has 28539 states and 40171 transitions. Word has length 252 [2022-11-03 02:18:29,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:29,119 INFO L495 AbstractCegarLoop]: Abstraction has 28539 states and 40171 transitions. [2022-11-03 02:18:29,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 02:18:29,119 INFO L276 IsEmpty]: Start isEmpty. Operand 28539 states and 40171 transitions. [2022-11-03 02:18:29,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-03 02:18:29,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:29,126 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 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] [2022-11-03 02:18:29,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 02:18:29,126 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:18:29,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:29,127 INFO L85 PathProgramCache]: Analyzing trace with hash 71989401, now seen corresponding path program 1 times [2022-11-03 02:18:29,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:29,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113136805] [2022-11-03 02:18:29,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:29,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2022-11-03 02:18:29,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:29,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113136805] [2022-11-03 02:18:29,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113136805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:29,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:29,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:18:29,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225213177] [2022-11-03 02:18:29,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:29,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:18:29,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:29,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:18:29,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:18:29,959 INFO L87 Difference]: Start difference. First operand 28539 states and 40171 transitions. Second operand has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-03 02:18:33,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:40,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:40,114 INFO L93 Difference]: Finished difference Result 57136 states and 80657 transitions. [2022-11-03 02:18:40,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:18:40,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 256 [2022-11-03 02:18:40,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:40,241 INFO L225 Difference]: With dead ends: 57136 [2022-11-03 02:18:40,241 INFO L226 Difference]: Without dead ends: 28827 [2022-11-03 02:18:40,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:18:40,342 INFO L413 NwaCegarLoop]: 2475 mSDtfsCounter, 9 mSDsluCounter, 17240 mSDsCounter, 0 mSdLazyCounter, 2960 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 17280 SdHoareTripleChecker+Invalid, 2970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2960 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:40,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 17280 Invalid, 2970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2960 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-03 02:18:40,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28827 states. [2022-11-03 02:18:43,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28827 to 28647. [2022-11-03 02:18:43,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28647 states, 16929 states have (on average 1.308346624136098) internal successors, (22149), 17649 states have internal predecessors, (22149), 8942 states have call successors, (8942), 2862 states have call predecessors, (8942), 2773 states have return successors, (9224), 8342 states have call predecessors, (9224), 8934 states have call successors, (9224) [2022-11-03 02:18:43,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28647 states to 28647 states and 40315 transitions. [2022-11-03 02:18:43,288 INFO L78 Accepts]: Start accepts. Automaton has 28647 states and 40315 transitions. Word has length 256 [2022-11-03 02:18:43,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:43,288 INFO L495 AbstractCegarLoop]: Abstraction has 28647 states and 40315 transitions. [2022-11-03 02:18:43,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-03 02:18:43,289 INFO L276 IsEmpty]: Start isEmpty. Operand 28647 states and 40315 transitions. [2022-11-03 02:18:43,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-11-03 02:18:43,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:43,295 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 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] [2022-11-03 02:18:43,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 02:18:43,295 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)] === [2022-11-03 02:18:43,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:43,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1216984386, now seen corresponding path program 1 times [2022-11-03 02:18:43,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:43,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756983882] [2022-11-03 02:18:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:43,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2022-11-03 02:18:44,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:44,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756983882] [2022-11-03 02:18:44,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756983882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:44,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:44,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:18:44,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74652007] [2022-11-03 02:18:44,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:44,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:18:44,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:44,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:18:44,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:44,271 INFO L87 Difference]: Start difference. First operand 28647 states and 40315 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-03 02:18:47,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:52,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:52,404 INFO L93 Difference]: Finished difference Result 28691 states and 40355 transitions. [2022-11-03 02:18:52,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:18:52,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 259 [2022-11-03 02:18:52,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:52,532 INFO L225 Difference]: With dead ends: 28691 [2022-11-03 02:18:52,533 INFO L226 Difference]: Without dead ends: 28689 [2022-11-03 02:18:52,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:18:52,551 INFO L413 NwaCegarLoop]: 3078 mSDtfsCounter, 1655 mSDsluCounter, 9861 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1657 SdHoareTripleChecker+Valid, 11574 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:52,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1657 Valid, 11574 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1871 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-11-03 02:18:52,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28689 states. [2022-11-03 02:18:55,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28689 to 28671. [2022-11-03 02:18:55,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28671 states, 16947 states have (on average 1.30766507346433) internal successors, (22161), 17667 states have internal predecessors, (22161), 8942 states have call successors, (8942), 2868 states have call predecessors, (8942), 2779 states have return successors, (9224), 8342 states have call predecessors, (9224), 8934 states have call successors, (9224) [2022-11-03 02:18:55,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28671 states to 28671 states and 40327 transitions. [2022-11-03 02:18:55,253 INFO L78 Accepts]: Start accepts. Automaton has 28671 states and 40327 transitions. Word has length 259 [2022-11-03 02:18:55,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:55,254 INFO L495 AbstractCegarLoop]: Abstraction has 28671 states and 40327 transitions. [2022-11-03 02:18:55,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-03 02:18:55,254 INFO L276 IsEmpty]: Start isEmpty. Operand 28671 states and 40327 transitions. [2022-11-03 02:18:55,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-11-03 02:18:55,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:55,261 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 13, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:55,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 02:18:55,261 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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)] === [2022-11-03 02:18:55,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:55,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1623775614, now seen corresponding path program 1 times [2022-11-03 02:18:55,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:55,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538753932] [2022-11-03 02:18:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:55,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat